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系统分析揭示了赤霉素途径成分在生物量改良中的潜在应用。

Systematic Analysis of Gibberellin Pathway Components in Reveals the Potential Application of Gibberellin in Biomass Improvement.

机构信息

School of Life Science, Guangzhou University, Guangzhou 510006, China.

The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao 266101, China.

出版信息

Int J Mol Sci. 2020 Sep 29;21(19):7180. doi: 10.3390/ijms21197180.

DOI:10.3390/ijms21197180
PMID:33003317
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7582545/
Abstract

Gibberellins (GAs), a class of phytohormones, act as an essential natural regulator of plant growth and development. Many studies have shown that GA is related to rhizobial infection and nodule organogenesis in legume species. However, thus far, GA metabolism and signaling components are largely unknown in the model legume . In this study, a genome-wide analysis of GA metabolism and signaling genes was carried out. In total 29 components, including 8 genes, 2 genes, 13 genes, 3 genes, and 3 genes were identified in genome. Expression profiles revealed that most members of , , and showed tissue-specific expression patterns. In addition, the GA biosynthesis and deactivation genes displayed a feedback regulation on GA treatment, respectively. Yeast two-hybrid assays showed that all the three MtGID1s interacted with MtDELLA1 and MtDELLA2, suggesting that the MtGID1s are functional GA receptors. More importantly, exhibited increased plant height and biomass by ectopic expression of the , suggesting that enhanced GA response has the potential for forage improvement.

摘要

赤霉素（GAs）是一类植物激素，作为植物生长和发育的重要天然调节剂。许多研究表明，GA 与豆科植物中的根瘤菌感染和根瘤器官发生有关。然而，到目前为止，模式豆科植物中的 GA 代谢和信号转导成分在很大程度上尚不清楚。在这项研究中，对 GA 代谢和信号基因进行了全基因组分析。在 基因组中总共鉴定出 29 个成分，包括 8 个基因、2 个基因、13 个基因、3 个基因和 3 个基因。表达谱显示， 、 和 的大多数成员表现出组织特异性表达模式。此外，GA 生物合成和失活基因分别对 GA 处理表现出反馈调节。酵母双杂交试验表明，所有三个 MtGID1 都与 MtDELLA1 和 MtDELLA2 相互作用，表明 MtGID1 是功能性 GA 受体。更重要的是，通过异位表达 ， 表现出增加的株高和生物量，这表明增强的 GA 反应有可能改善饲料。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0170/7582545/ce91f78f1726/ijms-21-07180-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0170/7582545/4a9eabb7e787/ijms-21-07180-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0170/7582545/07c5c8ce341c/ijms-21-07180-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0170/7582545/ce91f78f1726/ijms-21-07180-g010.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0170/7582545/30a884da0c2b/ijms-21-07180-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0170/7582545/573c5e4ae621/ijms-21-07180-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0170/7582545/5adeed723fc7/ijms-21-07180-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0170/7582545/07c5c8ce341c/ijms-21-07180-g009.jpg
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