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11 results for “Gynandropsis”
Data for: Induction of C4 genes during de-etiolation of Gynandropsis gynandra evolved through changes in cis allowing integration into ancestral C3 gene regulatory networks
<p>C4 photosynthesis has evolved repeatedly and in doing so repurposed existing enzymes to drive a carbon pump that limits the oxygenation reaction of RuBisCO. C4 proteins accumulate to levels matching those of the photosynthetic apparatus, and to allow this gene expression must be modified over evolutionary time. To better understand this rewiring of gene expression we undertook RNA-SEQ and <span>DNaseI</span>-SEQ on de-etiolating seedlings of C4 <em>Gynandropsis gynandra</em> which is evolutionarily proximate to C3 <em>A. thaliana</em>. Changes in chloroplast ultrastructure and C4 gene expression in <em>G. gynandra</em> were coordinated and rapid. C3 and C4 photosynthesis genes showed similar induction patterns, but C4 genes from <em>G. gynandra</em> were more strongly induced than orthologs from <em>A. thaliana</em>. The cistrome of <em>G. gynandra</em> was enriched in TGA, TCP and homeodomain binding sites. Furthermore,<em> in vivo</em> binding data in <em>G. gynandra</em> highlighted TGA and homeodomain as well as light responsive elements such as G- and I-box motifs as being associated with the rapid increase in transcripts derived from C4 genes. Although promoters of <em>PPDK</em> and <em>ASP1</em> from <em>G. gynandra</em> contained distinct light responsive elements, promoters from both <em>A. thaliana</em> and <em>G. gynandra</em> allowed high expression. Deletion analysis of the <em>Ppa6</em> gene from <em>G. gynandra</em> showed that regions containing G- and I-boxes were necessary for high expression. The data support a model in which accumulation of transcripts derived from C4 genes in leaves of <em>G. gynandra</em> is enhanced compared with homologs in <em>A. thaliana</em> because a variety of modifications in <em>cis</em> allowed integration into ancestral transcriptional networks.</p>
Data for: Induction of C4 genes during de-etiolation of Gynandropsis gynandra evolved through changes in cis allowing integration into ancestral C3 gene regulatory networks
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Fig. 9 in Natural variation in specialised metabolites production in the leafy vegetable spider plant (Gynandropsis gynandra L. (Briq.)) in Africa and Asia
Fig. 9. Relative levels of glucosinolates and isothiocyanates in 43 accessions of Gynandropsis gynandra from Asia (red), East/Southern Africa (black) and West Africa (blue). (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 8 in Natural variation in specialised metabolites production in the leafy vegetable spider plant (Gynandropsis gynandra L. (Briq.)) in Africa and Asia
Fig. 8. Sparse partial least square discriminant analysis on the 48 accessions of Gynandropsis gynandra based on 130 volatile metabolites: (a) Score plot showing the projection of the 48 accessions Asia (red), East/Southern Africa (black) and West Africa (blue) on the two dimensions; (b) Selected variables representation on two dimensions on the correlation circles (0.5 and 1 correlation values). (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 7 in Natural variation in specialised metabolites production in the leafy vegetable spider plant (Gynandropsis gynandra L. (Briq.)) in Africa and Asia
Fig. 7. Heatmap of the 130 volatile metabolites detected in the leaves of 46 accessions of Gynandropsis gynandra from Asia (red), East/Southern Africa (black) and West Africa (blue). (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 4 in Natural variation in specialised metabolites production in the leafy vegetable spider plant (Gynandropsis gynandra L. (Briq.)) in Africa and Asia
Fig. 4. Sparse partial least square discriminant analysis on the 48 accessions of Gynandropsis gynandra based on 936 semi-polar metabolites: (a) Score plot showing the projection of the 48 accessions from Asia (red), East/Southern Africa (black) and West Africa (blue) on the first two dimensions; (b) Selected variables representation on two dimensions on the correlation circles (0.5 and 1 correlation values). (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 5 in Natural variation in specialised metabolites production in the leafy vegetable spider plant (Gynandropsis gynandra L. (Briq.)) in Africa and Asia
Fig. 5. Box plots showing the variation in relative levels of 14 annotated semi-polar metabolites in the leaves of 48 accessions of Gynandropsis gynandra. Lower and upper box boundaries represent 25th and 75th percentiles, respectively, the line inside the box is the median, lower, and upper error lines are 10th and 90th percentiles, respectively. Filled circles represent outliers. Putative identities: (a) LC2540: caffeoyl-oxalosuccinate; (b) LC3607: caffeoyl-hydroxycitric acid; (c) LC3341: dihydroxy-eudesmenolide-hexoside; (d) LC2765: Icariside B8; (e) LC3830: rhamnazin-hexoside-deoxyhexoside; (f) LC3890 quercetin-3-O-rutinoside; (g) LC880: glucocapparin; (h) LC 2021: caffeoyl-citric acid; (i) LC2468: coumaroyl-glucaric acid; (j) LC2400: glucaric acid-C26H26O14 conjugate; (k) LC2749: feruloylglucaric acid; (l) LC5323: dihydroxy-eudesmanolide-hexoside.
Fig. 6 in Natural variation in specialised metabolites production in the leafy vegetable spider plant (Gynandropsis gynandra L. (Briq.)) in Africa and Asia
Fig. 6. Principal component analysis score plot of relative levels of 130 volatile metabolites detected in the leaves of 46 accessions of Gynandropsis gynandra from Asia (red), East/Southern Africa (black) and West Africa (blue). The first two dimensions explaining 52.9% of the total variation are shown. 95% confidence ellipses are presented for the three regions. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 3 in Natural variation in specialised metabolites production in the leafy vegetable spider plant (Gynandropsis gynandra L. (Briq.)) in Africa and Asia
Fig. 3. Heatmap of 107 significant semi-polar metabolites with high PCA loadings (>|0.7|) in 48 accessions of Gynandropsis gynandra from Asia (red), East/Southern Africa (black) and West Africa (blue). (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 2 in Natural variation in specialised metabolites production in the leafy vegetable spider plant (Gynandropsis gynandra L. (Briq.)) in Africa and Asia
Fig. 2. Principal component analysis score plot of relative levels of 936 semi-polar metabolites detected in the leaves of 48 accessions of Gynandropsis gynandra from Asia (red), East/Southern Africa (black) and West Africa (blue). The first two dimensions explaining 39.6% of the total variation are shown. 95% confidence ellipses are displayed for the three regions. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 1 in Natural variation in specialised metabolites production in the leafy vegetable spider plant (Gynandropsis gynandra L. (Briq.)) in Africa and Asia
Fig. 1. Collection sites of the 48 accessions of Gynandropsis gynandra.
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