Loropetalum chinense var. rubrum
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PROVIDER: PRJNA1058453 | ENA |
REPOSITORIES: ENA
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Project description:Loropetalum chinense var. rubrum genome
| PRJNA1058446 | ENA
Project description:<p><strong>BACKGROUND:</strong> <em>Loropetalum chinense </em>var.<em> rubrum</em> (<em>L. chinense</em> var. <em>rubrum</em>) is a precious, native, coloured-leaf ornamental plant in the Hunan Province. We found a <em>L. chinense</em> var. <em>rubrum</em> tree with 3 different leaf colours: GL (green leaf), ML (mosaic leaf) and PL (purple leaf). The mechanism of leaf coloration in this plant is still unclear. The aim of this study was to identify the metabolites and genes involved in determining the colour composition of <em>L. chinense</em> var. <em>rubrum</em> leaves, using phenotypic/anatomic observations, pigment content detection, and comparative metabolomics and transcriptomics.</p><p><strong>RESULTS:</strong> We observed that the mesophyll cells in PL were purple, those in GL were green and those in ML were a mix of purple-green. The contents of chlorophyll a, b, carotenoids and total chlorophyll in PL and ML were significantly lower than those in GL. While the anthocyanin content in PL and ML was significantly higher than that in GL. The metabolomics results showed that the differences in content of cyanidin 3-O-glucoside, delphinidin 3-O-glucoside, cyanidin 3,5-O-diglucoside, pelargonin and petunidin 3,5-diglucoside in ML, GL and PL were significant. Considering that the trend of anthocyanin content change was consistent with the leaf colour difference, we speculated that these compounds might influence the colour of <em>L. chinense</em> var. <em>rubrum</em> leaves. Finally, using transcriptomics, we identified 9 differentially expressed structural genes (one <em>ANR</em> (<em>ANR1217</em>); four <em>CYP75A</em> (<em>CYP75A1815</em>, <em>CYP75A2846</em>, <em>CYP75A2909</em> and <em>CYP75A1716</em>); four UFGTs (<em>UFGT1876</em>, <em>UFGT1649</em>, <em>UFGT1839</em> and <em>UFGT3273</em>) and nine transcription factors (two <em>MYBs</em> (<em>MYB1057</em> and <em>MYB1211</em>), one <em>MADS-box</em> (<em>MADS1235</em>), two <em>AP2-likes</em> (<em>AP2-like1779</em> and <em>AP2-like2234</em>), one <em>bZIP</em> (<em>bZIP3720</em>), two <em>WD40s</em> (<em>WD2173</em> and <em>WD1867</em>) and one <em>bHLH</em> (<em>bHLH1631</em>) that might be related to flavonoid biosynthesis that impacted the appearance of colour in <em>L. chinense</em> var. <em>rubrum</em> leaves.</p><p><strong>CONCLUSIONS:</strong> This study revealed potential molecular mechanisms associated with leaf coloration in <em>L. chinense</em> var. <em>rubrum</em> by analysing differential metabolites and genes related to the anthocyanin biosynthesis pathway. It also provides a reference for research on leaf colour variation in other ornamental plants.</p>
2023-01-30 | MTBLS5662 | MetaboLights
Project description:Loropetalum chinense var. rubrum Yieh (L. chinense) is an evergreen shrub or small tree of Hamamelidaceae. In this study, the chloroplast genome sequence of L. chinense is 159,451 bp in length, consisting of a large single-copy region with 88,166 bp (LSC), a small single-copy region with 18,773 bp (SSC), and two inverted repeat regions with 26,256 bp (IRs). The GC content in the chloroplast genome of L. chinense is 38.0%. The chloroplast genome of L. chinense contained 125 genes, including 84 protein-coding genes, 37 tRNA genes, and 4 rRNA genes. The phylogenetic tree showed that L. chinense was closely related to L. subcordatum.
| S-EPMC8667894 | biostudies-literature
Project description:“Pruning” is a simple and efficient way to control the flowering period, but it is rarely used in perennial woody ornamental plants. In this paper, Loropetalum chinense var. rubrum was pruned in different degrees, and the relationship between pruning intensity and flowering number, and flowering time and chlorophyll fluorescence parameters were compared. After statistics, it was found that pruning could advance blossoms of L. chinense var. rubrum; also, light and heavy cutting could both obtain a larger number of flowers. In addition, through correlation analysis, it was found that during the flowering period, the Rfd parameter of the unpruned treatment had a very significant positive correlation with the number of flowers FN, which was 0.81. In other pruning treatment groups, Rfd and FN also presented a certain positive correlation, indicating that the Rfd parameter can be used to predict the number of flowers during the flowering process of L. chinense var. rubrum. The research results provided a new idea for the regulation of the flowering period of L. chinense var. rubrum and other woody ornamental plants and laid the foundation for the diversified application of L. chinense var. rubrum.
| S-EPMC9104088 | biostudies-literature
Project description:This research mainly focused on the leaf color change and photosystem function differentiation between Loropetalum chinense and its variety L. chinense var. rubrum under heat stress, which were tightly concerned about their ornamental traits and growth. L. chinense 'Xiangnong Xiangyun' (X) and L. chinense var. rubrum 'Xiangnong Fendai' (F) and L. chinense var. rubrum 'Hei Zhenzhu' (H) were chosen to be experimented on to investigate whether leaf color morphology and pigment composition could influence the adaptability of plants to high temperature in order to select foliage plants which posses stable leaf color and better adaptability for hot regions. The plants were cultured in hot environment (40 °C/33 °C, day/night) and normal environment (25 °C/18 °C, day/night). Phenotype and anatomic observation of three cultivars were made and leaf color indices and pigment contents were measured. During the experiment, H and F gradually turned green, total anthocyanins contents significantly decreased in them, however, chlorophyll b contents increased in all three cultivars. In addition, the initial fluorescence (Fo) decreased in X, while increased in H and F. For the maximum fluorescence (Fm) and maximum photochemical efficiency of PSII (Fv/Fm), they only increased in H and decreased in both F and X. The non-photochemical chlorophyll fluorescence quenching (NPQ) also increased in H and decreased in F. For X, it increased at first then gradually decreased. The coefficient of photochemical quenching all increased at first then gradually decreased. Correlation analysis between showed that there was relatively strong connection between anthocyanins, flavonoids and chlorophyll fluorescence parameters, especially NPQ, proved anthocyanins and flavonoids might not only involved in enriching leaf color, but also interfered with the protection of photosystem. Generally speaking, we found higher anthocyanin and flavonoids content level not only dramatically enriched the leaf color of L. chinense var. rubrum cultivars, but also offered more potential antioxidant to keep their normal growth when encountered heat stress.
| S-EPMC9933738 | biostudies-literature
Project description:Loropetalum subcordatum Genome sequencing and assembly
| PRJNA417724 | ENA