The Antagonistic Action of Abscisic Acid and Cytokinin Signaling Mediates Drought Stress Response in Arabidopsis

Molecular Plant
Xiaozhen HuangYiting Shi

Abstract

As sessile organisms, plants encounter a variety of environmental stresses and must optimize their growth for survival. Abscisic acid (ABA) and cytokinin antagonistically regulate many developmental processes and environmental stress responses in plants. However, the molecular mechanism underlying this antagonism remains poorly defined. In this study, we demonstrated that Sucrose nonfermenting1-related kinases SnRK2.2, SnRK2.3, and SnRK2.6, the key kinases of the ABA signaling pathway, directly interact with and phosphorylate type-A response regulator 5 (ARR5), a negative regulator of cytokinin signaling. The phosphorylation of ARR5 Ser residues by SnRK2s enhanced ARR5 protein stability. Accordingly, plants overexpressing ARR5 showed ABA hypersensitivity and drought tolerance, and these phenotypes could not be recapitulated by overexpressing a non-phosphorylated ARR5 mimic. Moreover, the type-B ARRs, ARR1, ARR11 and ARR12, physically interacted with SnRK2s and repressed the kinase activity of SnRK2.6. The arr1,11,12 triple mutant exhibited hypersensitivity to ABA. Genetic analysis demonstrated that SnRK2s act upstream of ARR5 but downstream of ARR1, ARR11 and ARR12 in mediating ABA response and drought tolerance. Taken together...Continue Reading

Citations

Mar 15, 2019·Journal of Experimental Botany·Muhammed Jamsheer KAshverya Laxmi
Apr 21, 2019·The Plant Journal : for Cell and Molecular Biology·Yang TaoShuangcheng Li
Jan 30, 2020·Journal of Experimental Botany·Kris VissenbergSébastjen Schoenaers
Feb 20, 2020·Physiologia Plantarum·Alba CotadoMarta Pintó-Marijuan
Jul 28, 2020·Plant, Cell & Environment·Manuel FrankThomas Schmülling
Nov 30, 2018·Plant, Cell & Environment·Anne CortlevenThomas Schmülling
Jan 9, 2019·Frontiers in Plant Science·Tao WangZhenhua Zhang
Feb 3, 2020·Molecular Genetics and Genomics : MGG·Zhangxiong LiuLijuan Qiu
Jul 16, 2020·International Journal of Molecular Sciences·Ruxue HuoZongyun Li
Aug 22, 2018·International Journal of Molecular Sciences·Jaroslav PavlůMartin Černý
Apr 5, 2020·Plants·Nguyen Ngoc HaiNguyen Phuong Thao
Apr 17, 2020·International Journal of Molecular Sciences·Ali Anwar, Ju-Kon Kim
Jun 6, 2020·Frontiers in Plant Science·Prashanth RamachandranAnnelie Carlsbecker
Nov 30, 2019·Plants·Ranjit Singh Gujjar, Kanyaratt Supaibulwatana
Apr 20, 2019·Scientific Reports·Stephen P Cohen, Jan E Leach
Sep 14, 2020·The Plant Journal : for Cell and Molecular Biology·Susan M MoengaDouglas R Cook
Oct 14, 2020·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Demissew SertseSylvie Cloutier
Oct 3, 2020·Physiologia Plantarum·M Iqbal R KhanChirag Maheshwari
Jan 27, 2021·International Journal of Molecular Sciences·Abirami RajavelMehmet Gültas
Feb 14, 2021·Plant Physiology and Biochemistry : PPB·Avantika BhaskarJitendra P Khurana
Feb 3, 2021·International Journal of Molecular Sciences·Ming WangSoulaiman Sakr
Mar 9, 2021·Frontiers in Plant Science·Jan SkalakJan Hejatko
Mar 17, 2021·Plant Cell Reports·Nguyen Nguyen ChuongNguyen Phuong Thao

❮ Previous
Next ❯

Related Concepts

Related Feeds

Allergy and Asthma

Allergy and asthma are inflammatory disorders that are triggered by the activation of an allergen-specific regulatory t cell. These t cells become activated when allergens are recognized by allergen-presenting cells. Here is the latest research on allergy and asthma.