Skip to main content
Powered by ShareScore

Find research datasets worth reusing

Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.

127

datasets available to search

ShareScore release 0.9.0

Reset

Dataset results

127 results for “leaf anatomy”

Learn how ShareScore rates datasets ↗
zenodo40/100

leaf anatomy, vascular traits and nanomechanical cell-wall properties in European beech provenances

<p>The file contains leaf anatomical data (thickness of individual leaf parenchyma layers), vascular traits of leaf midrib (vessel area and density and derived parameters), and nanomechanical properties of xylem cell walls (modulus of elasticity, adhesion, energy dissipation and deformation), which were studied in 15 provenances of European beech, originating from sites distributed across the whole range of the species. The trial plot (locality Tale in central Slovakia) was established in 1998 with 2-years-old seedling within the international provenance experiment with beech coordinated by the Institute of Forest Genetics of Thuenen Institute Grosshansdorf. Leaf anatomy was studied using light microscopy, while fluorescent microscopy was used to acquire vascular traits and atomic-force microscopy for nanomechanical cell-wall traits. Sun leaves were collected from 4 trees per provenances, 1 leaf per tree was analyzed. AFM was done in a subset of 8 provenances. The aim of the study was assessing geographical trends of the studied traits and their association with climate at the sites of origin to reveal potential adaptive variation patterns.</p>

opencc-by-4.0Feb 2020View details →
zenodo40/100

Mind the leaf anatomy while taking ground truth with portable chlorophyll meters.

<p>Measurements of four chlorophyll meters &mdash; three transmittance-based (SPAD-502, Dualex-4 Scientific, and MultispeQ 2.0) and one fluorescence-based (CCM-300), were calibrated against biochemically assessed chlorophyll content (Chl) on three distinctive common leaf types differing in leaf anatomy: laminar (i.e., broadleaved woody species with different anthocyanin content verified by biochemical assay) dorsiventral leaves, narrow grass leaves, and conifer needles. Reflectance in the 400-2500 nm range was measured on the laminar leaf samples using a contact probe.</p> <p><strong>Methods</strong></p> <p>In the present study we investigated three distinctive leaf anatomical types: laminar (i.e., deciduous woody species) leaves, grass leaves, and needles. The three groups are defined as follows: 1) laminar leaves of woody angiosperms dorsiventrally flattened (i.e., bifacial) leaves with differentiated mesophyll to palisade and spongy parenchyma and reticulate anastomosing vasculature (Laminar leaves).&nbsp;<span>We further distinguished three anatomical subtypes of laminar leaves 1a) mesomorphic leaves of deciduous tree species, 1b) scleromorphic leaves of evergreen trees and shrubs, and 1c) scleromorphic leaves with pronounced hypodermis represented by&nbsp;<em>Ficus</em> species</span> 2) The second group included C3 grasses with bifacial strap-like leaves with undifferentiated mesophyll with longitudinally arranged vasculature (Grass leaves), and 3) gymnosperm equilateral needle-like leaves without differentiated mesophyll and vascular bundle in the central cylinder (Needles) represented only by Norway spruce (<em>Picea abies</em>) though with irradiance induced differentiation into sun and shaded ecotypes.</p> <p><strong><em>Collection of leaf samples</em></strong></p> <p>Leaves were collected at four different locations in the Czech Republic during the growing seasons 2019, 2020, and 2021. The dates (as DOY - day of the year are indicated in particular datasets). Woody plants with laminar bifacial leaves with differentiated mesophyll were collected in the Botanical Garden of Charles University in Prague (50.072N, 14.424E). Plants were selected to correspond to one of the following leaf subtypes: 1) mesomorphic leaves of deciduous species, 2) scleromorphic leaves of evergreen trees and shrubs and 3) scleromorphic leaves with pronounced hypodermis represented by indoor grown&nbsp;<em>Ficus</em> species. Usually, shaded leaves were sampled from the ground.</p> <p>For independent verification of the relationship of Chl content to chlorophyll meter reading, leaves were sampled in the floodplain forest at the confluence of the rivers Morava and Dyje, near the town of Lanžhot (48.682N, 16.946E) using deciduous woody plants with laminar bifacial leaves and differentiated mesophyll. Sunlit and shaded branches were cut by a tree climber from mature trees of <em>Acer campestre </em>L., <em>Carpinus betulus </em>L., <em>Fraxinus angustifolia </em>Vahl., <em>Populus alba </em>L., <em>Quercus cerris </em>L., <em>Quercus robur </em>L. and <em>Tilia cordata </em>Mill.&nbsp;</p> <p>Grass leaves were represented by four coexisting wild species from <em>Poaceae</em> family (<em>Calamagrostis villosa </em>(Chaix) J.F.Gmel., <em>Deschampsia cespitosa </em>(<a title="Carl Linnaeus" href="https://en.wikipedia.org/wiki/Carl_Linnaeus">L.</a>)&nbsp;<a title="Ambroise Marie Fran&ccedil;ois Joseph Palisot de Beauvois" href="https://en.wikipedia.org/wiki/Ambroise_Marie_Fran%C3%A7ois_Joseph_Palisot_de_Beauvois">P.Beauv.</a>, <em>Molinia caerulea </em>(<a title="Carl Linnaeus" href="https://en.wikipedia.org/wiki/Carl_Linnaeus">L.</a>)&nbsp;<a title="Conrad Moench" href="https://en.wikipedia.org/wiki/Conrad_Moench">Moench</a> and <em>Nardus stricta </em>L.) and were collected in relict alpine-arctic grass tundra in the Krkono&scaron;e (Giant Mountains) (50.734N, 15.696E). For each species, six plots with homogeneous canopy cover of the species were sampled.&nbsp;</p> <p>Needle leaves were represented by mature trees of Norway spruce (<em>Picea abies </em>(<a title="Carl Linnaeus" href="https://en.wikipedia.org/wiki/Carl_Linnaeus">L.</a>)&nbsp;<a title="Gustav Karl Wilhelm Hermann Karsten" href="https://en.wikipedia.org/wiki/Gustav_Karl_Wilhelm_Hermann_Karsten">H. Karst.</a>) collected at the experimental station B&iacute;l&yacute; Kř&iacute;ž, Beskydy Mountains, Czech Republic (49.503N, 18.539E). Sunlit and shaded branches were cut by a tree climber, and samples were taken from the current year's needles, the previous year's needles, and four-year-old needles.&nbsp;</p> <p><strong><em>Leaf sampling</em></strong></p> <p>Laminar leaves: leaves were measured immediately after being detached from the branch or stored in a refrigerator for no more than 30 minutes before processing. First, the reflectance of the leaves was measured using a spectroradiometer and a contact probe. Second, readings from all portable chlorophyll meters were recorded. Third, one disk (area = 68 mm<sup>2</sup>) was cut from each leaf for Chl and anthocyanin extraction. Finally, a square segment of the leaf was cut out and immersed in fixative solution for anatomical analysis. A second leaf of similar size, colour, position in the canopy, and developmental stage was removed from the branch, weighed, scanned, and later dried and weighed again. This "twin" was used to assess leaf mass per area (LMA), equivalent water thickness (EWT).</p> <p>Grass leaves: chlorophyll meter readings were taken on grass leaves attached to the plant using a chlorophyll meter (CCM<sub>CFR</sub>,) then leaves were collected immediately in the field for Chl extraction. A 2 cm long leaf segment was cut, flattened under a microscope glass, photographed for area assessment, and stored in plastic vials in a refrigerator before freezing. A subsample was weighed fresh, scanned, and dried for calculation of LMA and EWT.</p> <p>Needles: Shoots were separated from the branch, sorted by age, and stored in a refrigerator for no longer than 24 hours before processing. First, CCM<sub>CFR</sub> were taken from the middle part of three needles and the same needles were used for Chl extraction. A second parallel set of needles was immersed in fixative solution for anatomical analysis. The third set of needles was weighed fresh, scanned, and dried for calculation of LMA and EWT.</p> <p><strong><em>Optical assessment of Chl content using portable chlorophyll meters</em></strong></p> <p>Three transmittance-based chlorophyll meters: SPAD-502 SPAD), Dualex-4 Scientific (Dx) and MultispeQ (MSPQ), and one fluorescence chlorophyll meter: CCM-300 (CCM), were used for optical assessment of Chl content in leaves. For laminar leaves, three readings were taken on each leaf with each instrument from the adaxial leaf side. Measurements were taken in the central part of the leaf, avoiding the midrib and main veins. The three measurements were averaged, and the average was used as a representative value for the leaf. Measurements with all four chlorophyll meters (SPAD<sub>values</sub>, Dx<sub>values</sub>, MSPQ<sub>values</sub>, CCM<sub>CFR</sub>) were obtained for laminar leaves. For grass leaves, Chl values were measured at a single location in the apical third of the leaf blade. All four grass species were measured by CCM (CCM<sub>CFR</sub>), and three species with a wide enough lamina to cover the SPAD measurement area (<em>Calamagrostis villosa</em>, <em>Deschampsia cespitosa</em>, and <em>Molinia careulea</em>) were also measured by SPAD and SPAD<sub>values</sub> detected. For the spruce needles, three needles were measured only once with the CCM, always taking a reading in the central part of the needle. The average of these three needle measurements was used to relate to Chl.</p> <p><strong><em>Reflectance measurements and spectral processing</em></strong></p> <p>Reflectance was measured for laminar leaves collected in Botanical Garden of Charles University in Prague and deciduous trees from floodplain forest. Leaf reflectance from the adaxial side of the leaves was measured with an ASD FieldSpec 4 Wide-Res spectroradiometer with attached contact probe (ASD Inc., Boulder, CO, USA). Three measurements per leaf were always taken, when leaf size allowed. Measurements were placed at the same locations where chlorophyll meter readings were taken. Leaf reflectance spectra ranging from 350 to 2500 nm were normalized against a white reference spectrum (99% Spectralon white panel) to obtain relative reflectance spectra. The median of the spectral curve from three measurements was used as a representative value for the leaf.&nbsp;</p>

opencc-by-4.0Feb 2024View details →
zenodo40/100

Dataset for "High photosynthesis rates in Brassiceae species are mediated by leaf anatomy enabling high biochemical capacity, rapid CO2 diffusion and efficient light use"

<p>Dataset used in the paper</p> <p>Retta MA, Van Doorselaer L, Driever SM, Yin X, de Ruijter NCA, Verboven P, Nicola&iuml; BM, Struik PC. High photosynthesis rates in Brassiceae species are mediated by leaf anatomy enabling high biochemical capacity, rapid CO<sub>2</sub> diffusion and efficient light use. New Phytol. 2024 Sep 18. doi: 10.1111/nph.20136. PMID: 39294895.</p> <p>Please cite the paper presenting this datase.</p> <h1><strong>Plant Species and Inbred Lines:</strong></h1> <ul> <li><em>Hirschfeldia incana L. (7th generation inbred line 190003 HIN-NIJ-07-B)&nbsp;</em></li> <li><em>Brassica nigra L. (3rd generation inbred line 210093 BNI-DG1-03-B)</em></li> <li><em>Brassica rapa L. (inbred line &lsquo;R-o-18&rsquo;)</em></li> <li><em>Arabidopsis thaliana (accession Columbia)</em></li> </ul> <h1><strong>Growth Conditions:</strong></h1> <ul> <li><em>Media:</em> Rock-wool blocks (Grodan Plantop, Roermond, Netherlands, 10&times;10&times;7.5 cm)</li> <li><em>Fertigation:</em> Nitrogen-rich nutrient solution via automated dripping system.</li> <li><em>Light Conditions:</em> 12 h day/12 h night, light intensity of 200 &micro;mol m-2 s-1 and 1800 &micro;mol m-2 s-1</li> <li><em>Temperature:</em> Day/Night temperatures of 23 &deg;C and 20 &deg;C, respectively.</li> <li><em>Relative Humidity:</em> 70%</li> </ul> <h1><strong>Codes</strong></h1> <p><strong>Species:</strong></p> <ul> <li><em>Hirschfeldia incana L. - H. incana</em></li> <li><em>Brassica nigra L. - B. nigra</em></li> <li><em>Brassica rapa L. - B. rapa</em></li> <li><em>Arabidopsis thaliana - A. thaliana</em></li> </ul> <p><strong>Light conditions:</strong></p> <ul> <li><em>High light - HL</em></li> <li><em>Low light - LL</em></li> </ul> <p><strong>Replicates:</strong></p> <ul> <li><em>Biological replicates were labeled with numbers, e.g. replicate one from high light grown Hirschfeldia incana is referred to as HiHL1</em></li> </ul> <h1><strong>Measurements</strong></h1> <h2><strong>Leaf Gas Exchange and Chlorophyll Fluorescence Measurements (GasExchangeData.zip):</strong></h2> <ul> <li>Four leaves per species per treatment.</li> <li>Conducted using a LI-6800 (LI-COR, Lincoln, NE, USA) on the mid-position of the youngest fully expanded leaf.</li> <li>The resoponse of photosynthesis to irradiance and external CO2 concentrations augumneted with multi-phase flash fluorescence were made</li> </ul> <h2><strong>Optical Properties Measurement </strong>(<strong>Absorbance &amp; chlorophyll.zip):</strong></h2> <ul> <li><em>Leaves:</em> Four leaves per species per treatment.</li> <li>Leaf transmittance and reflectance measured using a dual channel spectrophotometer (absorptance_reflac_data_355_750.xlsx)</li> <li>Chlorophyll content measured using a spectrophotometer (Chlorophyll.xlsx).</li> </ul> <h2><strong>Stomatal Density and Size Analysis </strong>(<strong>Stomata.zip):</strong></h2> <p><strong>Sampling:</strong></p> <ul> <li><em>Leaves:</em> Four leaves per species per treatment.</li> <li><em>Plants:</em> Samples taken from three different plants.</li> <li><em>Leaf-side:</em> abaxial and adxial leaf side.</li> </ul> <p><strong>Microscopy Setup:</strong></p> <ul> <li>Stomatal imprints made using clear nail polish, imaged using a light microscope at 20x.</li> </ul> <p><strong>Data Output:</strong></p> <ul> <li><em>Imaging Results:</em> .jpg files organised under folders for species e.g. AtHL\R1 T+B.zip contains images ofimprints of top (T) and bottom (B) leaf sides from replicate plant 1 (R1) of A. thaliana grown under high light (AtHL). The images are named as for example, AT_HL_BOTTOM_R1_A_stacked_minimum.jpg, The leters A to E label various imges made from one imprint.</li> </ul> <h2><strong>Light and Electron Microscopy of Leaf Sections (</strong><strong>CellwallChloroplast.zip):</strong></h2> <p><strong>Sampling:</strong></p> <ul> <li><em>Leaves:</em> Four leaves per species per treatment.</li> <li><em>Plants:</em> Samples taken from four different plants.</li> </ul> <p><strong>Sample preparation</strong></p> <ul> <li>Leaf samples fixed, dehydrated, embedded in Araldite, and sectioned for imaging.</li> <li>1 &micro;m think sections were made for light microscopy</li> <li>Sections&nbsp; of 70 nm were double stained for TEM</li> </ul> <p><strong>Microscopy Setup:</strong></p> <ul> <li>Mesophyll cells imaged at 400x and 700x to measure chloroplast coverage.</li> <li>Electron microscopy performed with Zeiss EM900 electron microscope.</li> </ul> <h2><strong>Mesophyll Chlorophyll (ConfocalData.zip):</strong></h2> <p><strong>Sampling:</strong></p> <ul> <li><em>Leaves:</em> Three leaves per species per treatment.</li> <li><em>Plants:</em> Samples taken from three different plants.</li> <li><em>Thickness:</em> 200 &plusmn; 10 &micro;m sections prepared using a sliding microtome</li> </ul> <p><strong>Microscopy Setup:</strong></p> <ul> <li><em>Microscope:</em> Leica DM8 inverted scope equipped with a Stellaris 5 confocal microscope (Leica Microsystems, Wetzlar, Germany).</li> <li><em>Excitation:</em> 490 nm excitation laser line</li> <li><em>Fluorescence Recording:</em> Chlorophyll autofluorescence recorded in a spectral range of 660&minus;700 nm.</li> <li><em>Objective:</em> Leica objective &times;10/0.4 NA.</li> <li><em>Z-Stacks:</em>&nbsp; 85&ndash;112 &micro;m depth, two random positions per sample</li> </ul> <p><strong>Data Output:</strong></p> <ul> <li><em>Imaging Results:</em> Z-stacks of chlorophyll autofluorescence in mesophyll cells.</li> <li><em>Spectral Information:</em> Chlorophyll autofluorescence recorded in the 660&minus;700 nm range.</li> </ul> <p><strong>Analysis:</strong></p> <ul> <li><em>Software:</em> The confocal files are in .lif format and can be viewed using Leica application suite (LASx), ImageJ</li> </ul>

opencc-by-4.0Dec 2022View details →
dryad36/100

Morphology, anatomy and photosynthesis data for two leaf types of Ficus pumila

<p class="MsoNormal"><span>Plants that display heteroblasty possess conspicuous variations in leaf morphology between their juvenile and adult phases, with certain species retaining juvenile-like leaves even in adulthood. Nevertheless, the ecological advantages of maintaining two or more distinct leaf types in heteroblastic plants at the adult stage remain unclear. The aim of this study is to examine the adaptive significance of heteroblastic leaves sampled from branches with divergent functions (sterile and fertile branches) of mature <em>Ficus pumila</em> individuals by comparing their morphological, anatomical, and physiological characteristics. Leaves on sterile branches (LSs) exhibited a significantly larger specific leaf area, thinner palisade and spongy tissues, lower chlorophyll contents, and lower light saturation points than leaves on fertile branches (LFs). These results demonstrate that LSs are better adapted to low light environments, while LFs are well equipped to take advantages of high light conditions. However, both LFs and LSs have a low light compensation point with no significant difference between them, indicating that they start to accumulate photosynthetic products under same light conditions. Interestingly, significant higher net photosynthetic rate was detected in LFs, showing they have higher photosynthetic capacity. Furthermore, LFs produced significant more nutrients compared to LSs, which may associate to their ability of accumulating more photosynthetic products under full light conditions and higher photosynthetic capacity. Overall, we observed a pattern of divergence in morphological features of leaves on two functional branches. Anatomical and physiological features indicate that LFs have an advantage in varied light conditions, providing amounts of photosynthetic products to support the sexual reproduction, while LSs adapt to low light environments. Our findings provide evidence that heteroblasty facilitates <em>F. pumila</em> to utilize varying light environments, likely associated with its growth form as a climbing plant. This strategy allows the plant to allocate resources more effectively and optimize its overall fitness.</span></p>

opencc-zeroSep 2023View details →
dryad36/100

Morphology, anatomy and photosynthesis data for two leaf types of Ficus pumila

Open the record for dataset details and reuse information.

publicSep 2023View details →
dryad32/100

Data from: Gas exchange and leaf anatomy of a C3-CAM hybrid, Yucca gloriosa (Asparagaceae)

While the majority of plants use the typical C3 carbon metabolic pathway, ~6% of angiosperms have adapted to carbon limitation as a result of water stress by employing a modified form of photosynthesis known as Crassulacean acid metabolism (CAM). CAM plants concentrate carbon in the cells by temporally separating atmospheric carbon acquisition from fixation into carbohydrates. CAM has been studied for decades, but the evolutionary progression from C3 to CAM remains obscure. In order to better understand the morphological and physiological characteristics associated with CAM photosynthesis, phenotypic variation was assessed in Yucca aloifolia, a CAM species, Yucca filamentosa, a C3 species, and Yucca gloriosa, a hybrid species derived from these two yuccas exhibiting intermediate C3–CAM characteristics. Gas exchange, titratable leaf acidity, and leaf anatomical traits of all three species were assayed in a common garden under well-watered and drought-stressed conditions. Yucca gloriosa showed intermediate phenotypes for nearly all traits measured, including the ability to acquire carbon at night. Using the variation found among individuals of all three species, correlations between traits were assessed to better understand how leaf anatomy and CAM physiology are related. Yucca gloriosa may be constrained by a number of traits which prevent it from using CAM to as high a degree as Y. aloifolia. The intermediate nature of Y. gloriosa makes it a promising system in which to study the evolution of CAM.

opencc-zeroDec 2015View details →
zenodo32/100

FIGURE 6 in A new Critically Endangered species of stone breaker (Phyllanthus, Phyllanthaceae) from Central Brazil, with notes on its leaf and stem anatomy

FIGURE 6. Cross sections of the internodes of the stem of Phyllantus pterocaulis. A. General aspect; B. Epidermis, cortex and vascular system; C. Non-gladular trichomes (*); D. Hypodermis and ground parenchyma in the cortex. A. Arrow indicates stomata in the epidermis; E. Primary phloem; co—collenchyma, ep—epidermis, hy—hypodermis, me—medula, pa—ground parenchyma, ph—phloem, vb— vascular bundles, t—trichomes, xy - xylem. Asterisk shows sieve tube elements. Scale bars (A = 100 µm, B = 70 µm, C-E = 40 µm).

opennotspecifiedJan 2022View details →
zenodo32/100

FIGURE 5 in A new Critically Endangered species of stone breaker (Phyllanthus, Phyllanthaceae) from Central Brazil, with notes on its leaf and stem anatomy

FIGURE 5. Cross sections of Phyllanthus pterocaulis leaf blade and petiole. A–F. Leaf blade; A, B Mesophyll; C. border; D. Non-gladular trichomes (*); E. Idioblasts containing druses; F. Vascular bundle; G. Midrib; H. General aspect of the petiole; I. Epidermis and cortex in the petiole. co—cortex, d—druses, ep—epidermis, pa—ground parenchyma, pp—palisade parenchyma. sp—spongy parenchyma, vb— vascular bundle. Scale bars (A–G, I = 40 µm, B = 70 µm).

opennotspecifiedJan 2022View details →
zenodo32/100

FIGURE 2. Phyllanthus pterocaulis M.J. Silva. A in A new Critically Endangered species of stone breaker (Phyllanthus, Phyllanthaceae) from Central Brazil, with notes on its leaf and stem anatomy

FIGURE 2. Phyllanthus pterocaulis M.J. Silva. A. Habit; B. Portion of branch showing the cymules and fruit; C. Detail of the cymules; D. Staminate flower in frontal view; E. Pistillate flower in lateral view, the sepals green whitish; F. Pistillate flower in upper view, the sepals reddish; G. Fruit; H. Seeds in dorsal and lateral view. Photographs by M. J. Silva.

opennotspecifiedJan 2022View details →
zenodo32/100

FIGURE 1. Phyllanthus pterocaulis M.J. Silva. A in A new Critically Endangered species of stone breaker (Phyllanthus, Phyllanthaceae) from Central Brazil, with notes on its leaf and stem anatomy

FIGURE 1. Phyllanthus pterocaulis M.J. Silva. A. Habit; B. Portion of branch, note the winged projections and hispidulous trichomes; C. Stipules; D. Leave, note the ciliate margin; E. Detail of lower side of the leaf blade showing trichomes; F. Detail of the bisexual cymules. G. Staminate flower; H. Pistillate flower in frontal view; I. Pistillate flower, note the disk and ovary; J. Fruit; K. Mericarps removed showing the carpophorous; L. Seed, lateral view; M. Seed, dorsal view. (drawings by Cristiano Gualberto, from the holotype)

opennotspecifiedJan 2022View details →
zenodo32/100

FIGURE 4 in A new Critically Endangered species of stone breaker (Phyllanthus, Phyllanthaceae) from Central Brazil, with notes on its leaf and stem anatomy

FIGURE 4. Leaf architecture of Phyllantus pterocaulis. A. Adaxial surface of the leaf blade; B and E. abaxial surface of the leaf blade; C. Border with non-glandular trichomes; D. Non-glandular trichomes on adaxial surface; F. Stomata. Arrows indicate anomocytic (1), and paracytic stomata (2). Scale bars (A, B = 1000 µm, C–E = 200 µm, F = 50 µm).

opennotspecifiedJan 2022View details →
zenodo32/100

FIGURE 2 in Tovomita manauara (Clusiaceae): a new species revealed by fruit morphology and leaf anatomy

FIGURE 2. Transversal sections of the petiole of Tovomita manauara (A–C) and T. caloneura (D–F). A. General overview of vascular system and secretory canals distribution across cortical region, black arrows showing secretory canals. B. Detail of vascular bundles; notes the absence of fibers around the vascular bundles. C. Detail of angular collenchyma (white arrow) and presence of druse. D. General overview of the vascular system and secretory canals distribution across cortical region, black arrows showing secretory canals. E. Detail of vascular bundles. F. Detail of the petiole, arrowheads showing idioblasts. co—cortex, col—collenchyma, vb—vascular bundles, ep— epidermis, xy—xylem, ph—phloem, sc—secretory canals, dr—druse.

opennotspecifiedFeb 2022View details →
zenodo32/100

FIGURE 3 in Tovomita manauara (Clusiaceae): a new species revealed by fruit morphology and leaf anatomy

FIGURE 3. Scanning electron micrographs (SEM) from the leaf blade of Tovomita manauara (A–C) and T. caloneura (D–F). A–B. Abaxial surface view. C. Detail of a stomata. D. Abaxial surface view. E. Detail of a stomata. F. Detail of a druse on the petiole. dr—druse, st—stomata.

opennotspecifiedFeb 2022View details →
zenodo32/100

FIGURE 3 in A new species of Chamaecrista sect. Absus (Leguminosae, Caesalpinioideae) from Minas Gerais, Brazil, with Notes on Leaf Anatomy

FIGURE 3. Distribution of Chamaecrista sempreviva. A. Espinhaço Range in Brazil (highlighted in yellow); B. Espinhaço Meridional in Minas Gerais (highlighted in yellow); C. Geographical location of known populations of Chamaecrista sempreviva in Espinhaço Range (cross hatched area: Rio Preto State Park).

opennotspecifiedFeb 2022View details →
zenodo32/100

FIGURE 4 in A new species of Chamaecrista sect. Absus (Leguminosae, Caesalpinioideae) from Minas Gerais, Brazil, with Notes on Leaf Anatomy

FIGURE 4. Anatomical features in species of Chamaecrista series Unijugae. A. Bulbous trichomes in Chamaecrista sempreviva and B–C. C. catapodia; D. Thick cuticle and stomatal crest in C. petiolata; E. Mucilage detected by toluidine blue staining in epidermal cells of C. sempreviva and F. C. monticola; G. Idioblasts in leaflet midrib of C. catapodia; H. Idioblasts in leaflet midrib of C. petiolata; I. Idioblasts in leaflet mesophyll of C. catapodia; J. Idioblasts in mesophyll of C. petiolata.

opennotspecifiedFeb 2022View details →
zenodo32/100

FIGURE 4 in Tovomita manauara (Clusiaceae): a new species revealed by fruit morphology and leaf anatomy

FIGURE 4. Transversal sections of leaf blade of Tovomita manauara (A–B) and T. caloneura (C–E). A. Transverse section with general view, black arrows point to secretory canals, black arrowheads point to fibers. B. Detail of the vascular system and secretory canals (black arrow). C. Transverse section with general view. D. Vascular bundles in the general view. E. Transversal section of the leaf blade. mv— midvein, ms—mesophyll, ct—cuticle, xy—xylem, ph—phloem, pp—palisade parenchyma, sp—spongy parenchyma, ep—epidermis, vb – vascular bundles.

opennotspecifiedFeb 2022View details →
zenodo32/100

FIGURE 1 in Tovomita manauara (Clusiaceae): a new species revealed by fruit morphology and leaf anatomy

FIGURE 1. General aspect of Tovomita manauara in sicco. A. Branch with closed fruits. B. Detail of the abaxial surface of leaf blade. C. Detail showing a cross section of the closed fruit with an aborted seed. D. Gray shadows show the fruit shape and number of septa in T. caloneura (left) and T. manauara (right). A and C detail from Nee 42991 (NY01417188); B and C from Silva s/n (NY01417091). Image courtesy of the C.V. Starr Virtual Herbarium, New York Botanical Garden (http://bluegum.nybg.org/science/vh/).

opennotspecifiedFeb 2022View details →
zenodo32/100

FIGURE 1. Chamaecrista sempreviva. A in A new species of Chamaecrista sect. Absus (Leguminosae, Caesalpinioideae) from Minas Gerais, Brazil, with Notes on Leaf Anatomy

FIGURE 1. Chamaecrista sempreviva. A. Habit; B. Detail of leaflet (abaxial surface); C. Detail of leaflet (adaxial surface); D. Apex of leaflet showing long mucro; E. Detail of rachis showing single trichome; F. Detail of pedicel showing trichomes; G. Bract; H. Calyx opened out (outer surface); I. Petals: Median petal, the upper lateral petals, and lower lateral petals; J. Androecium with anthers much longer than the filaments; K. Gynoecium; L. Pod; M. Seed. (all from A.P. Fortuna-Perez et al., 1594). Illustrated by Jesiani Rigon.

opennotspecifiedFeb 2022View details →
zenodo32/100

FIGURE 2. Chamaecrista sempreviva. A, B, D in A new species of Chamaecrista sect. Absus (Leguminosae, Caesalpinioideae) from Minas Gerais, Brazil, with Notes on Leaf Anatomy

FIGURE 2. Chamaecrista sempreviva. A, B, D. Stems showing leaves and, inflorescences; C. Habitat: Cerrado ("campo rupestre"); E. Detail of bifoliolate leaves; F. Flowers. Photos by A.P. Fortuna-Perez.

opennotspecifiedFeb 2022View details →
dryad32/100

Data from: Growing at the arid edge: Leaf anatomy variations are more extensive than stems in five Mediterranean species across contrasting moisture regimes-all the raw data of the anatomic measurements

<p>Premise:</p> <p>The Mediterranean region is experiencing increasing aridity, affecting ecosystems and plant life. Plants exhibit various anatomical changes to cope with dry conditions, including anatomical changes. This study focused on five co-occurring Mediterranean plant species namely <em>Quercus calliprinos</em>, <em>Pistacia palaestina</em>, <em>Pistacia lentiscus</em>, <em>Rhamnus lycioides</em>, and <em>Phillyrea latifolia</em> in wet and dry sites, investigating anatomical differences in leaves and xylem.</p> <p>Methods:</p> <p>Leaf analysis involved stomatal density, stomatal length, Leaf Mass Area (LMA), lamina composition, quantification of leaf intercellular air spaces (IAS), and mesophyll cell area exposed to these spaces. Xylem anatomy was assessed through vessel length and area in branches.</p> <p>Results:</p> <p>In the dry site, three species showed increased stomatal density and decreased stomatal length. Four species exhibited increased palisade mesophyll (PM) and reduced air space volume. In contrast, the phenotypic change in the xylem was less pronounced, with vessel length remaining unaffected by the site conditions. Furthermore, vessel diameter decreased in two species. Intercellular air spaces (IAS) proved to be the most dynamic anatomical feature. <em>Quercus calliprinos</em> demonstrated the highest anatomical phenotypic changes, while <em>Rhamnus lycioides</em> exhibited minor changes.</p> <p>Conclusions:</p> <p>This study sheds light on the variation in anatomical responses among co-occurring Mediterranean plant species and identifies the most dynamic traits. Understanding these adaptations provides valuable insights into the ability of plants to thrive under changing climate conditions.</p>

opencc-zeroJun 2024View details →

ScienceDex guides

Understand access before you commit

These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.

Compare curated datasets

Allen Brain Atlas

Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.

allen-brain-atlas
neuroscienceopenDocumentation, web resources, and API references are available online.
Last verified 2026-04-30Open record

Annotated Behaviour and Observability Dataset (ABODe)

ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.

abode-home-cage
behavioral-neuroscienceopenThe DataShare record exposes download links for annotations, documentation, license text, and the zipped per-snippet data directory.
Last verified 2026-04-30Open record

DANDI Archive for NWB datasets

DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.

dandi-nwb
electrophysiologyopenPublished Dandiset metadata and archive endpoints are available through the production DANDI API.
Last verified 2026-04-30Open record

International Brain Laboratory public data

The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.

ibl
behavioral-neuroscienceopenPublic sessions can be searched and loaded from the IBL public data server through ONE.
Last verified 2026-04-29Open record

OpenNeuro

OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.

openneuro
neuroscienceopenPublished datasets are available on demand over the internet.
Last verified 2026-04-29Open record