EXB1/WRKY71 transcription factor regulates both shoot branching and responses to abiotic stresses
EXB1/WRKY71 transcription factor regulates both shoot branching and responses to abiotic stresses
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DOI：
10.1080/15592324.2016.1150404
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发表时间：
2016-01-01
影响因子：
2.9
通讯作者：
Qin, Genji
中科院分区：
文献类型：
--
作者：
Guo, Dongshu;Qin, Genji
作为固着生物，植物在逆境中进化出不同的生存策略。植物枝条分枝的精细调控是植物形态适应各种环境的重要策略，而活性氧（ROS）、水杨酸（SA）和茉莉酸（JA）的调控则是植物对生物和非生物胁迫响应的关键。最近，我们已经证明拟南芥EXB 1，一个WRKY转录因子，是一个正调控芽分支;作为植物细胞的封面故事。在这里，我们表明，WRKY 23，EXB 1密切成员，有一个冗余的作用，在控制拍摄分支。我们进一步证明EXB 1受H2 O2、阿坝或甘露醇处理诱导，表明EXB 1也可能在植物对非生物胁迫的响应中发挥作用。利用4 EnhpEXB 1-EXB 1GR诱导系进行的RNA测序（RNA-seq）分析表明，参与氧化应激、氧化还原、SA或JA信号通路的基因在短时间内受到EXB 1诱导的调控。我们认为EXB 1/WRKY 71转录因子可能通过形态和生理两方面的途径在植物对环境的适应中发挥关键作用。
As the sessile organisms, plants evolve different strategies to survive in adverse environmental conditions. The elaborate regulation of shoot branching is an important strategy for plant orphological adaptation to various environments, while the regulation of reactive oxygen species (ROS), salicylic acid (SA) and jasmonic acid (JA) is pivotal for plant responses to biotic and abiotic stresses. Recently, we have demonstrated that Arabidopsis EXB1, a WRKY transcription factor, is a positive regulator of shoot branching;as a cover story in Plant Cell. Here we show that WRKY23, an EXB1 close member, has a redundant role in control of shoot branching. We further show that EXB1 induced by H2O2, ABA or mannitol treatments, suggesting that EXB1 may also play roles in plant responses to abiotic stresses. RNA-sequencing (RNA-seq) analysis, using 4EnhpEXB1-EXB1GR inducible line indicates that the genes involved in oxidative stress, oxidation reduction, SA or JA signaling pathway are regulated by EXB1 induction in a short time. We suggest that EXB1/WRKY71 transcription factor may play pivotal roles in plant adaptation to environments by both morphological and physiological ways.