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34 results for “Marchantia polymorpha”
Stiffness transitions in new walls post-cell division differ between Marchantia polymorpha gemmae and Arabidopsis thaliana leaves
<p>Plant morphogenesis is governed by the mechanics of the cell wall–a stiff and thin polymeric box that encloses the cells. The cell wall is a highly dynamic composite material. New cell walls are added during cell division. As the cells continue to grow, the properties of cell walls are modulated to undergo significant changes in shape and size without breakage. Spatial and temporal variations in cell wall mechanical properties have been observed. However, how they<br> relate to cell division remains an outstanding question. Here we combine time-lapse imaging with local mechanical measurements via atomic force microscopy to systematically map the cell wall’s age and growth, with their stiffness. We make use of two systems, <em>M. polymorpha</em> gemmae, and <em>A. thaliana</em> leaves. We first characterise the growth and cell division of <em>M. polymorpha</em> gemmae. We then demonstrate that cell division in <em>M. polymorpha</em> gemmae results in<br> the generation of a temporary stiffer and slower growing new wall. In contrast, this transient phenomenon is absent in <em>A. thaliana</em> leaves. We provide evidence that this different temporal behaviour has a direct impact on the local cell geometry via changes in the junction angle. These results are expected to pave the way for developing more realistic plant morphogenetic models and to advance the study into the impact of cell division on tissue growth.</p>
Data from: Extensive epigenetic reprogramming during the life cycle of Marchantia polymorpha
<p>This GFF contains M. polymorpha genes (taken from the official release v3.1, Phytozome 11, phytozome.jgi.doe.gov) and transposable elements and repeats identified in the study (see Materials and Methods).</p>
Fig. 4 in Arachidonic acid-dependent carbon-eight volatile synthesis from wounded liverwort (Marchantia polymorpha)
Fig. 4. Effect of incubation after tissue-disruption on the amounts of endogenous volatiles. Volatiles were extracted with methyl tert-butyl ether from intact thalli (lower chromatogram) or from freeze–thaw treated thalli (upper chromatogram), and analyzed using GC–MS. Inset shows the enlarged chromatogram from 15.8 to 18.4 min. C15 sesquiterpenoids with the chemical formulas C15H24 (m/z 204, with peaks k to p) and C15H26O (m/z 222, with the peaks q and r) were tentatively identified based on their MS profiles (Supplemental Fig. S2).
Fig. 6 in Arachidonic acid-dependent carbon-eight volatile synthesis from wounded liverwort (Marchantia polymorpha)
Fig. 6. Resolution of enantiomers of 5 formed from racemic 3. The crude enzyme extract prepared from des6KO thalli was reacted with racemic 3, and the 5 formed by enzyme catalyzed hydrolysis was subjected to chiral phase GC analysis (upper chromatogram). 5 was not detected with the reaction mixture prepared without substrate (middle chromatogram) or without enzyme (lower chromatogram).
Fig. 3 in Arachidonic acid-dependent carbon-eight volatile synthesis from wounded liverwort (Marchantia polymorpha)
Fig. 3. Time course of emission of 1 and 5 after mechanical wounding of M. polymorpha thallus grown in a field. Average ± s.e. (n = 6) is shown. Different letters for each compound refer to significant differences (ANOVA, Bonferroni, P <0.01).
Fig. 5 in Arachidonic acid-dependent carbon-eight volatile synthesis from wounded liverwort (Marchantia polymorpha)
Fig. 5. Effect of incubation after tissue disruption on C8 volatile formation. The thalli were frozen and the volatiles were extracted (white bars), or the frozen thalli were thawed, and incubated for 5 min at 24 °C to facilitate the enzyme reaction (gray bar). Average ± s.e. (n = 4) is shown. Asterisks indicate significant differences for the noted compound (Student's t-test, ⁄⁄⁄P <0.001).
Fig. 8 in Arachidonic acid-dependent carbon-eight volatile synthesis from wounded liverwort (Marchantia polymorpha)
Fig. 8. Effect of addition of NAD(P)H on the C8 volatiles emitted from M. polymorpha thalli. C8 volatiles extracted from intact (white bars), partially wounded (50%, gray bars), totally disrupted (black bars), totally disrupted in the presence of NADH (coarse stripe), and totally disrupted M. polymorpha thalli in the presence of NADPH (dense stripe) were quantified. The average ± s.e. (n = 4–5) is shown. Different letters for each compound refer to significant differences (one way ANOVA, Fisher, P <0.05).
FIGURE 0. Marchantia polymorpha L in Thalloid Liverworts (Marchantiopsida) of Sri Lanka
FIGURE 0. Marchantia polymorpha L. (A) Dorsal surface of thallus (B, C) Epidermal pores, surface view (D) Laminal scale (E) Appendage of laminal scale (F, G) Median scales (H & I) Archegoniophores (J) Margin of the gemma cup (K) A lobe of gemma cup A–G, J, K Ruklani & Rubasinghe 58-14SR (PDA); H–I Ruklani & Rubasinghe 360-15SR (PDA).
FIGURE. Morphology of Marchantia species of Sri Lanka. (A) Yellowish green, robust thallus of M. acaulis with a distinct dark median band and dark purplish margin (B) Light green thallus of M. paleacea without a distinct median band (C) Thallus of M. papillata with a distinct black coloured median band (D) Pale green coloured thallus of M. pappeana without a distinct median band (E) Dark green thallus of M. polymorpha (F) Green coloured thallus of M. emarginata with a blackish median band. A—Ruklani & Rubasinghe 108-14SR; B—Ruklani & Rubasinghe 14-14SR; C—Ruklani & Rubasinghe 28-14SR; D—Ruklani & Rubasinghe 55-14SR; E—Ruklani & Rubasinghe 360-15SR; F—Ruklani & Rubasinghe 169-14SR. in Thalloid Liverworts (Marchantiopsida) of Sri Lanka
FIGURE. Morphology of Marchantia species of Sri Lanka. (A) Yellowish green, robust thallus of M. acaulis with a distinct dark median band and dark purplish margin (B) Light green thallus of M. paleacea without a distinct median band (C) Thallus of M. papillata with a distinct black coloured median band (D) Pale green coloured thallus of M. pappeana without a distinct median band (E) Dark green thallus of M. polymorpha (F) Green coloured thallus of M. emarginata with a blackish median band. A—Ruklani & Rubasinghe 108-14SR; B—Ruklani & Rubasinghe 14-14SR; C—Ruklani & Rubasinghe 28-14SR; D—Ruklani & Rubasinghe 55-14SR; E—Ruklani & Rubasinghe 360-15SR; F—Ruklani & Rubasinghe 169-14SR.
Fig. 9 in Arachidonic acid-dependent carbon-eight volatile synthesis from wounded liverwort (Marchantia polymorpha)
Fig. 9. Proposed biosynthetic pathway to form C8 volatiles in M. polymorpha thalli.
Fig. 1. Structures for compounds 1–5 in Arachidonic acid-dependent carbon-eight volatile synthesis from wounded liverwort (Marchantia polymorpha)
Fig. 1. Structures for compounds 1–5.
Conservation of antiviral defences in the non-vascular plant Marchantia polymorpha
GEO Series GSE241827. Marchantia polymorpha. 8 samples. Type: Expression profiling by high throughput sequencing.
The wound activated ERF15 transcription factor drives Marchantia polymorpha regeneration by activating an oxylipin biosynthesis feedback loop
GEO Series GSE196912. Marchantia polymorpha. 12 samples. Type: Expression profiling by high throughput sequencing.
Comparative transcriptomic analysis of Marchantia polymorpha BoGa and the MpB-GATA1 mutants Mpb-gata1-1 and Mpb-gata1-2
GEO Series GSE208557. Marchantia polymorpha. 9 samples. Type: Expression profiling by high throughput sequencing.
Antagonism between blue and red light-signalling controls thallus flatness in Marchantia polymorpha
GEO Series GSE316508. Marchantia polymorpha. 78 samples. Type: Expression profiling by high throughput sequencing.
DE-ETIOLATED1 has a role in the circadian clock of the liverwort Marchantia polymorpha
GEO Series GSE180340. Marchantia polymorpha subsp. ruderalis. 24 samples. Type: Expression profiling by high throughput sequencing.
A Conserved Salicylic Acid Signaling Pathway Controls Plant Immunity against Pseudomonas thought the unique TGA transcription factor in Marchantia polymorpha
GEO Series GSE300298. Marchantia polymorpha. 24 samples. Type: Expression profiling by high throughput sequencing.
H2A ubiquitination is essential for Polycomb Repressive Complex 1-mediated gene regulation in Marchantia polymorpha
GEO Series GSE164394. Marchantia polymorpha. 36 samples. Type: Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing.
An evolutionarily ancient Fatty Acid Desaturase is required for the synthesis of hexadecatrienoic acid, which is the main source of the bioactive jasmonate in Marchantia polymorpha
GEO Series GSE186451. Marchantia polymorpha. 4 samples. Type: Expression profiling by array.
High-light stress RNA-seq Marchantia polymorpha
GEO Series GSE208562. Marchantia polymorpha. 36 samples. Type: Expression profiling by high throughput sequencing.
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