Article
Plant Sciences
Sotaro Katagiri, Yoshiaki Kamiyama, Kota Yamashita, Sara Iizumi, Risa Suzuki, Yuki Aoi, Fuminori Takahashi, Hiroyuki Kasahara, Toshinori Kinoshita, Taishi Umezawa
Summary: Plants adopt different strategies in response to drought stress depending on its intensity and duration. This study reveals that SNF1-related protein kinase 2 substrate 1 plays a role in growth regulation under drought conditions. It contributes to maintaining growth and promoting flowering by repressing stress-responsive genes and inducing FLOWERING LOCUS T expression. The phosphorylation and accumulation of SNS1 in plants reflect the intensity and duration of stress and can serve as a molecular scale for maintaining growth and adopting optimal drought tolerance strategies.
PLANT AND CELL PHYSIOLOGY
(2023)
Article
Plant Sciences
Carlos Augusto Manacorda, Gustavo Gudesblat, Moira Sutka, Sergio Alemano, Franco Peluso, Patricio Oricchio, Irene Baroli, Sebastian Asurmendi
Summary: The study revealed that TuMV infection results in stomatal closure in Arabidopsis, altering plant water balance, hormonal balance, and drought tolerance. Despite lower relative water loss during infection, plants simultaneously subjected to drought and viral stresses showed higher mortality rates.
PLANT CELL AND ENVIRONMENT
(2021)
Article
Plant Sciences
Yue Shi, Xiangning Liu, Shuangshuang Zhao, Yan Guo
Summary: Reducing transpiration aids plant survival during limited water conditions. Gene expression regulated by abscisic acid (ABA) and the activation of anion channels control stomatal closure and stress responses during drought. Additionally, actin reorganization mediated by CKL2 kinase activity further contributes to maintaining stomatal closure and fine-tunes ABA signaling in plants.
Article
Plant Sciences
Zirui Wang, Dawood Khan, Leilin Li, Jing Zhang, Zed Rengel, Baige Zhang, Qi Chen
Summary: Hydrogen acts as a signaling molecule in Arabidopsis, regulating stomatal closure by promoting the generation of reactive oxygen species and nitric oxide. The GPA1 gene is found to be necessary for hydrogen-rich water-induced stomatal closure in Arabidopsis.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2022)
Article
Plant Sciences
Pirko Jalakas, Yohei Takahashi, Rainer Waadt, Julian I. Schroeder, Ebe Merilo
Summary: Vapour pressure deficit (VPD) is an important indicator of atmospheric drought and evaporative pressure on plants, affecting stomatal closure response. There are still many unanswered questions regarding the molecular VPD-sensing and signalling mechanisms in stomatal guard cells that require further research.
Article
Plant Sciences
Zirui Wang, Leilin Li, Dawood Khan, Yanli Chen, Xiaojun Pu, Xinjia Wang, Miao Guan, Zed Rengel, Qi Chen
Summary: Reactive oxygen species (ROS) and nitric oxide (NO) play important roles in regulating stomatal movements in plants. Melatonin induces stomatal closure through the activation of ROS production via phytomelatonin receptor 1 (PMTR1). The study shows that the melatonin-induced stomatal closure and NO production are dependent on each other, and both are affected by the presence of ROS. These results suggest that melatonin-mediated stomatal closure in Arabidopsis involves the interplay between ROS and NO.
JOURNAL OF PLANT PHYSIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Tu-Trinh Thi Truong, Chi-Chou Chiu, Jing-Yu Chen, Pei-Yu Su, Tri-Phuong Nguyen, Ngoc-Nam Trinh, Tetsuro Mimura, Ruey-Hua Lee, Ching-Han Chang, Hao-Jen Huang
Summary: This study reveals the mechanisms of microbial volatile compounds (mVCs)-induced stomatal closure in Arabidopsis. It shows that mVCs from Enterobacter aerogenes enhance ROS production in guard cells and that ROS is involved in stomatal closure. It also identifies two stages of signal transduction during mVC-induced stomatal closure, suggesting a multi-phase mechanism in plant immune responses.
PLANT MOLECULAR BIOLOGY
(2023)
Article
Multidisciplinary Sciences
Yoshiaki Kamiyama, Misaki Hirotani, Shinnosuke Ishikawa, Fuko Minegishi, Sotaro Katagiri, Conner J. Rogan, Fuminori Takahashi, Mika Nomoto, Kazuya Ishikawa, Yutaka Kodama, Yasuomi Tada, Daisuke Takezawa, Jeffrey C. Anderson, Scott C. Peck, Kazuo Shinozaki, Taishi Umezawa
Summary: The study identified Raf36 and Raf22 protein kinases in plants as regulators of ABA signal transduction under multiple mechanisms to suppress ABA response. Through a series of experiments, it was found that they regulate ABA response through phosphorylation and other mechanisms under ABA stimulation, playing an important role in plants' adaptation to stress conditions.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Plant Sciences
Mariana Antonietta, Matias de Felipe, Shane A. Rothwell, Tom B. Williams, Patrick Skilleter, Alfonso Albacete, Lucas Borras, Mariana C. Rufino, Ian C. Dodd
Summary: Chilling can reduce the sensitivity of stomata to the hormone abscisic acid (ABA) in legumes. However, the mechanisms involved in this process are not clear. Through experiments, it was found that prolonged chilling decreased leaf water content but increased leaf ethylene evolution and concentrations of ethylene precursor and hormones like ABA and jasmonic acid. Stomatal conductance was found to decrease with foliar ABA accumulation, and the application of an ethylene antagonist partially reversed the excessive stomatal opening caused by chilling.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Genetics & Heredity
Yinwei Zeng, Inge Verstraeten, Hoang Khai Trinh, Thomas Heugebaert, Christian Stevens, Irene Garcia-Maquilon, Pedro L. Rodriguez, Steffen Vanneste, Danny Geelen
Summary: The study found that exogenously applied ABA can suppress the formation of adventitious roots in Arabidopsis, while the synthetic ABA analog PB exhibits a stronger inhibitory effect. Additionally, analysis of various pyrabactin analogs suggests that adventitious root formation and lateral root branching are regulated differently by ABA signaling, with PYL1 and PYL2 identified as candidate ABA receptors that control AR inhibition.
Article
Plant Sciences
Milena Lewandowska, Krzysztof Zienkiewicz, Agnieszka Zienkiewicz, Amelie Kelly, Stefanie Koenig, Kirstin Feussner, Ljerka Kunst, Ivo Feussner
Summary: This study investigates the role of wax biosynthesis and respective genes in response to plant wounding. The results show that genes coding for enzymes of surface wax synthesis are induced upon wounding in an ABA-dependent manner. The ABA-dependent transcription factor MYB96 is identified as a key regulator of wax biosynthesis. Furthermore, the study reveals that high humidity prevents wound-induced wax accumulation in Arabidopsis thaliana leaves.
PLANT AND CELL PHYSIOLOGY
(2023)
Article
Plant Sciences
Chaochao Liang, Chunlong Li, Jing Wu, Min Zhao, Donghua Chen, Cuimei Liu, Jinfang Chu, Wei Zhang, Inhwan Hwang, Mei Wang
Summary: In this study, SNX2 proteins in Arabidopsis thaliana were found to play a crucial role in the endosomal trafficking of the ABA transporter ABCG25, leading to its degradation and modulation of ABA levels. Mutant plants lacking SNX2 showed enhanced sensitivity to ABA and increased tolerance to drought stress.
Article
Biochemistry & Molecular Biology
Nadav Eisner, Tzofia Maymon, Ester Cancho Sanchez, Dana Bar-Zvi, Sagie Brodsky, Ruth Finkelstein, Dudy Bar-Zvi
Summary: ABI4 transcription factor plays multiple roles in regulating plant growth, with phosphorylation of S114 being necessary for responses to ABA, glucose, salt stress, and lateral root development. Phosphorylation of S114 is required for the regulation of 35% of repressed genes by ABI4, while only 17% of induced genes are affected.
Article
Plant Sciences
Bailin Duan, Xiaofang Xie, Yanhua Jiang, Ning Zhu, Hongli Zheng, Yuxin Liu, Xuejun Hua, Yanyan Zhao, Yuqiang Sun
Summary: GhMYB44 gene plays a crucial role in plant response to abiotic stress, but its function in cotton is not well understood. In this study, GhMYB44 was induced by drought and ABA treatment in cotton. Silencing GhMYB44 resulted in physiological changes, including increased malondialdehyde content and decreased SOD activity. The silenced plants also exhibited increased stomatal aperture, water loss rate, and decreased drought tolerance.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Qin Liu, Yaping Zhou, Hui Li, Ruirui Liu, Wei Wang, Wangze Wu, Ning Yang, Shuyang Wang
Summary: This study investigated the role of PLD delta and H2S in stomatal closure induced by osmotic stress in plants. The results showed that the closure of stomata under osmotic stress required the presence of PLD delta and H2S, with LCD acting downstream of PLD delta.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2021)