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弗拉格林诱导的GABA-shunt提高了Brassica napus L的干旱压力耐受性

Şerife Palabıyık¹, İrem Çetinkaya¹, Tülay Alp Öztürk¹

¹Faculty of Science, Department of Biology, Ege University, Bornova-Izmir, 35100, Türkiye.

BMC plant biology

|September 15, 2024

概括

弗拉格林-22 (Flg-22) 治疗通过激活GABA分流通路,涉及MYC2和ZAT12转录因子,提高了Brassica napus的干旱耐受性. 这种相互作用提高了植物对非生物压力的弹性.

科学领域:

植物科学植物科学
分子生物学分子生物学
压力生理学压力生理学

背景情况:

胺黄油酸 (GABA) 及其通过GABA分路转化为糖酸与植物的应激耐受性有关.
GABA在植物防御中的确切作用及其与非生物应激耐受性的相互作用仍在研究中.

研究的目的:

为了调查是否通过生物应激剂 (Flagellin-22) 激活GABA分流通道,可以提高Brassica napus中的非生物应激耐受性.
阐明GABA分流,关键酶和特定转录因子 (MYC2,MPK6,ZAT12) 在植物对生物和干旱压力的反应中的参与.

主要方法:

布拉西卡纳普斯植物被用Flagellin-22 (Flg-22) 处理,并受到干旱压力.
在叶子和根组织中分析了GABA水平,GABA分流酶活性 (GAD,GABA-T,SSADH) 和MYC2,MPK6和ZAT12的表达特征.

主要成果:

在B. napus中,flg-22治疗增加了干旱耐受性,这种耐受性由GABA分流和MAPK信号传递介导.
Flg-22促进了GABA生物合成,增加了叶子中的GABA含量和GAD活性.
在结合Flg-22和干旱压力下的植物中观察到增强的GABA分流活动 (GABA-T,SSADH) 和升高的MYC2和ZAT12转录水平,这表明交叉对话机制.

结论:

弗拉格林-22 (Flg-22) 诱导GABA分流通路,有助于布拉西卡纳普斯的干旱压力耐受性.
在MYC2和ZAT12转录因子之间存在可信的交叉对话,由Flg-22诱导的效应器触发免疫力 (ETI) 激活,增强了植物对干旱压力的弹性.

关键词:

欧洲资本贸易协会 (ETI)效应分子的效应分子.飞行员-22 飞行员-22 飞行员对于GABA来说,这是一个很好的选择.这就是MAPKK的意思.氨酸 (proline) 是一种氨酸.

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