![]() ![]() Junwen Huang, Junjie Huang, Qiyi Feng, Yaqiao Shi, Feige Wang, Kaiyong Zheng, Qize Huang, Jieming Jiang, Siyi Luo, Yun Xie, Danlu Han, Jianbin Lai and Chengwei Yang. Yiping Wang, Hailei Zhang, Pengxi Wang, Huan Zhong, Wuzhen Liu, Shoudong Zhang, Liming Xiong, Yingying Wu and Yiji Xia.Īrabidopsis EXTRA-LARGE G PROTEIN 1 (XLG1) functions together with XLG2 and XLG3 in PAMP-triggered MAPK activation and immunity Low copy numbers for mitochondrial DNA moderates the strength of nuclear–cytoplasmic incompatibility in plants Liguang Zhang, Jin Ma, Zhaorui Shen, Bo Wang, Qingling Jiang, Fei Ma, Yan Ju, Guangxing Duan, Quan Zhang, Xiaodong Su and Sodmergen. Qinqin Chen, Jingli Yan, Tiantian Tong, Peiyu Zhao, Shuangshuang Wang, Na Zhou, Xing Cui, Moyu Dai, Yuan‐Qing Jiang and Bo Yang.ĪNAC087 transcription factor positively regulates age-dependent leaf senescence through modulating the expression of multiple target genes in Arabidopsis. Xiaolin Jia, Meifang Song, Shaoci Wang, Tong Liu, Lijian Wang, Lin Guo, Liang Su, Yong Shi, Xu Zheng and Jianping Yang.Īrabidopsis phytochromes A and B synergistically repress SPA1 under blue light Phosphorylation of the LCB1 subunit of Arabidopsis serine palmitoyltransferase stimulates its activity and modulates sphingolipid biosynthesis Yuan Li, Hanwei Cao, Tingting Dong, Xiaoke Wang, Liang Ma, Kun Li, Huiqiang Lou, Chun-Peng Song and Dongtao Ren. ![]() Lei Zhang, Jian Wu, Jianli Liang, Runmao Lin, Chao Sun, Qirui Dai, Lupeng Zhang, Huiling Guo, Ranze Zhao and Xiaowu Wang.Ĭonserved noncoding sequences correlate with distant gene contacts in Arabidopsis and Brassica. Key words: Arabidopsis, ethylene signaling, leaf senescence, RACK1, scaffold protein, transcriptional cascade This study reveals a mechanistic framework by which RACK1A promotes leaf senescence via the EIN3-miR164-ORE1 transcriptional cascade, and provides a paradigm for how scaffold proteins finely tune phytohormone signaling to control plant development. Together, they then associate with the miR164 promoter to inhibit its transcription, leading to the release of the inhibition on downstream ORE1 ( ORESARA 1) transcription and the promotion of leaf senescence. Moreover, RACK1A promotes EIN3 (ETHYLENE INSENSITIVE 3) protein accumulation, and directly interacts with EIN3 to enhance its DNA-binding activity. The rack1a mutant exhibits delayed leaf senescence, while transgenic lines overexpressing RACK1A display early leaf senescence. RACK1A is a novel positive regulator of ethylene-mediated leaf senescence. Here, we report that the scaffold protein RACK1A (RECEPTOR FOR ACTIVATED C KINASE 1A) participates in leaf senescence mediated by ethylene signaling via the coordination of the EIN3-miR164-ORE1 transcriptional regulatory cascade. However, the functions of plant scaffold proteins in response to senescence signals are not well understood. Leaf senescence is a well-programmed developmental stage that is coordinated by various external and internal signals. ![]() Plants have adopted versatile scaffold proteins to facilitate the crosstalk between multiple signaling pathways. ![]()
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