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6 results for “xylem anatomy”
DART-TOFMS of heartwood and xylem anatomy of Afzelia bipindensis and Afzelia pachyloba
<p>Anatomical and spectral data of heartwood of <em>Afzelia bipindensis</em> and <em>A. pachyloba. </em>The spectra was measured by direct analysis in real-time (DART) time-of-flight mass spectrometry (TOFMS) of 50 trees of <em>Afzelia bipindensis</em> and 39 of <em>A. pachyloba</em>. Specimens from the xylarium collection of the U.S. Fish and Wildlife Service in Ashland, Oregon, USA. Mass spectra of the emitted wood compounds were acquired in positive ion mode over the mass range of m/z 60 to 1100. Poly(ethylene glycol) 600 (Ultra Scientific, Kingstown, Rhode Island, USA) was used as a mass calibration standard after every fifth sample. The DART source parameters settings were the same as described by Espinoza et al. IAWA J 36: 311–325 (2015) and Evans et al. IAWA J 38: 266-281 (2017).</p> <p>Xylem vessel tangential lumen diameter (µm) measured in transverse sections of wood of five trees of <em>Afzelia bipindensis</em> and five of <em>A. pachyloba</em>. Specimens from the xylarium of the Royal Museum for Central Africa in Belgium.</p> <p>Xylem ray height and width (µm) measured in tangential sections of wood of five trees of <em>Afzelia bipindensis</em> and five of <em>A. pachyloba</em>. Specimens from the xylarium of the Royal Museum for Central Africa in Belgium.</p>
Data from: Anatomy of an agricultural antagonist: Feeding complex structure and function of three xylem sap-feeding insects illuminated with synchrotron-based 3D imaging
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Xylem anatomy traits of Quercus species
<p>1. Climate is a major evolutionary force in driving adaptive differentiation and plasticity in plant function. Xylem anatomy and hydraulic architecture are critical to water use, growth, and responses of trees to drought and thus important in delimiting their ecological niches. How wood properties have been shaped through evolution by their climatic origins and the importance of plasticity for species persistence remain open questions critical to understanding plant responses to changing climate.</p> <p>2. We measured 11 wood anatomical traits for 18 Quercus (oak) species in arboreta that span contrasting climates (California-US, southwestern France, and central England). We investigated coordinate evolution of xylem anatomical properties with climatic niche and intraspecific variation in relation to growth environment.</p> <p>3. Species originating from climates with drier summers had traits associated with higher resistance to drought– higher density of vasicentric tracheids (VT), lower vessel hydraulic diameter (Dmh), and lower hydraulic conductivity. Species that evolved in climates with drier, hotter summers or colder winters had higher numbers of VT than those from mesic climates, supporting hypotheses that VT are critical for water-transport during drought. We found limited intraspecific variation in xylem traits associated with growth environment– only four traits (pit fraction, VT, vessel density, and Dmh)– differed among gardens.</p> <p>4. Xylem traits showed high lability across the phylogeny, consistent with evidence for parallel sympatric adaptive radiation and global diversification of the oaks. Our results provide evidence for the physiological mechanisms that underlie adaptation to changing environments and responses to climate change.</p>
Developmental and water deficit-induced changes in hydraulic properties and xylem anatomy of tomato fruit and pedicel
<p><span>Xylem water transport from the parent plant into the fruit plays a crucial role in fruit growth, development, and quality formation. Current research on fruit hydraulics has attempted to partition the hydraulic resistance of the pathway over development. However, no consensus has been reached and this question has not been addressed in the context of changing plant and fruit water status under water deficit. We rigorously investigated the developmental changes of hydraulic property of the fruit and pedicel under well-irrigated condition and water deficit based on hydraulic measurements, fruit rehydration, dye tracing, light and electron microscopy, and flow modeling. A decline in water transport capacity did not occur in the pathway prior to the fruit, but within the fruit itself, which might lie in the xylem and/or outside-xylem pathway. The developmental pattern of pathway hydraulic resistance was not significantly influenced by water deficit. The changed xylemic water flow between the fruit and the parent plant due to a reduced driving force under water deficit could explain the reduced fruit water accumulation. This work provides new insights into the understanding of xylem water transport in fleshy fruits and its sensitivity to water deficit from a hydraulics perspective.</span></p>
Xylem anatomy traits of Quercus species
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Developmental and water deficit-induced changes in hydraulic properties and xylem anatomy of tomato fruit and pedicel
Open the record for dataset details and reuse information.
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