Peptide hormones
Peptide hormones
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DOI：
10.1016/b978-0-12-811562-6.00011-6
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发表时间：
2017-01-01
期刊：
影响因子：
--
通讯作者：
Liu, Chun-Ming
中科院分区：
文献类型：
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作者：
Song, Xiu-Fen;Ren, Shi-Chao;Liu, Chun-Ming
植物细胞间的细胞间通讯主要受生长素、细胞分裂素、赤霉素、油菜素类固醇、脱落酸和乙烯等代谢产物激素的调节。然而，近年来，具有几个到几十个氨基酸的小肽被发现是许多植物生物学过程中重要的细胞间通讯信号。这些肽以非细胞自主的方式起作用以协调防御和发育过程，包括分生组织维持、细胞分裂、气孔发育、生殖和再生。虽然在植物基因组中已经预测了1000多种潜在的肽激素，但只有几十种已经被功能性地表征。从迄今为止获得的知识，似乎很明显，这些肽激素的信号是专门由富含亮氨酸的重复受体激酶，代表最大的受体家族在植物中感知。在本章中，我们提供了肽编码基因，肽加工和修饰，以及已知肽的功能的一般概述。讨论了多肽研究面临的挑战和前景。
Intercellular communications among plant cells are regulated mainly by metabolite-based hormones such as auxin, cytokinin, gibberellins, brassinosteroids, abscisic acid, and ethylene. However, in recent years small peptides with a few to dozens of amino acids have been discovered as important cell-to-cell communication signals underlying many plant biological processes. These peptides act in a non-cell autonomous manner to coordinate defense and developmental processes including meristem maintenance, cell division, stomata development, reproduction, and nodulation. Although more than 1000 potential peptide hormones have been predicted in plant genomes, only dozens of them have been functionally characterized. From knowledge obtained so far, it seems evident that signals of these peptide hormones are exclusively perceived by leucine-rich repeat receptor kinases that represent the largest receptor family in plants. In this chapter, we provide a general overview on peptide coding genes, peptide processing and modification, and functions of known peptides. The challenge and perspective in peptide research are discussed.