2024年4月13日 · Here, we report that a plant NLR Sw-5b mimics the behavior of the ABA receptor and directly employs the ABA central regulator PP2C-SnRK2 complex to activate an ABA-dependent defence against...

脱落酸 （abscisic acid，ABA）是植物响应干旱、盐胁迫等逆境产生的一种内源激素。ABA与受体蛋白PYR/PYL结合后，解除磷酸酶 PP2C 对激酶 SnRK2 活性的抑制，激活SnRK2，诱导植物胁迫响应，抑制生长。

2009年10月13日 · Abscisic acid (ABA) signaling is important for stress responses and developmental processes in plants. A subgroup of protein phosphatase 2C (group A PP2C) or SNF1-related protein kinase 2 (subclass III SnRK2) have been known as major negative or positive regulators of ABA signaling, respectively.

2021年4月29日 · 4月28日，中国科学院分子植物科学卓越创新中心研究员王鹏程研究组等在Nature Communications上发表研究论文Initiation and amplification of SnRK2 activation in ABA signaling，揭示了植物激素脱落酸（ABA）信号通路中核心组分SnRK2激活过程中的起始-放大机制。

2025年3月31日 · ABA INSENSITIVE 1 (ABI1) and ABI2 are co-receptors of the phytohormone abscisic acid (ABA). Studies have demonstrated that phosphorylation of multiple amino acids on ABI1/2 augments their ability to inhibit ABA signaling in planta. ... In this study, we identified two protein phosphatases, designated ABI1 Dephosphorylating E clade PP2C 1 (ADEP1 ...

2016年3月26日 · pp2c. 参与. aba. 调控,对干旱、低温、 高盐等逆境胁迫的响应,参与植物创伤和种子休眠或萌发等信号途径,其调控机制不同,但酶催化活性都依赖. 于. mg. 2＋ 或. mn. 2＋ 的浓度。植物. pp2c. 蛋白的. c. 端催化结构域高度保守,而. n. 端功能各异。文中还综述了高等. 植物 ...

2015年4月17日 · We have identified a group A PP2C from rice (OsPP108), which is highly inducible under ABA, salt and drought stresses and localized predominantly in the nucleus. Genetic analysis revealed that Arabidopsis plants overexpressing OsPP108 are highly insensitive to ABA and tolerant to high salt and mannitol stresses during seed germination, root ...

Recent breakthroughs in the field of ABA signaling have indicated that there are three major components, PYR/PYL/RCAR (an ABA receptor), type 2C protein phosphates (PP2C, a negative regulator), and SNF1-related protein kinase 2 (SnRK2, a positive regulator).

大量研究表明，植物PP2C 负调控ABA 信号转导途径及多种逆境胁迫转导途径。 本文对高等植物 PP2C 的分类及其对多种逆境信号转导途径的调控功能研究进行了综述与展望。 关键词:PP2C 蛋白磷酸酶;负调控;逆境信号 中图分类号:Q814 文献标志码:A 文章编号:1000 -1522(2010)05 -0168 -04. CHEN Jin-huan;XIA Xin-li;YIN...

Numerous academic studies have shown that plant PP2Cs are involved in multiple signal transduction pathways including PP2C involved in ABA signaling pathway, the response to drought, low temperature, salt stress, participated in the plant wound and seed dormancy or germination signal pathway, and exist the different regulation mechanism and the ...