Article
Plant Sciences
Wei Yuan, Qian Zhang, Ying Li, Qianwen Wang, Feiyun Xu, Xiaolin Dang, Weifeng Xu, Jianhua Zhang, Rui Miao
Summary: In this study, it was found that under water stress, ABA and Ca2+ play important roles in promoting root elongation of plants, facilitating primary root growth. Through observations and analysis of ABA-related mutants in Arabidopsis and tomato, it was revealed that irew1 showed significantly enhanced root growth under water potential gradient or water-deficient conditions.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Genetics & Heredity
Shaobo Gu, Xin Wang, Jiuyuan Bai, Tao Wei, Manli Sun, Lin Zhu, Maolin Wang, Yun Zhao, Wei Wei
Summary: The novel function of CIPK11 in modulating Cd transport in Arabidopsis thaliana was discovered, with overexpression leading to increased tolerance to Cd stress. The overexpression of CIPK11 resulted in down-regulation of IRT1, FIT, and bHLH039 genes after Cd stress, as well as increased expression of ABA marker genes. Additionally, ABA treatment was found to recover root length differences caused by Cd stress, indicating that ABA may inhibit IRT1 transcription by repressing FIT and bHLH039 expression.
Article
Biochemistry & Molecular Biology
Syed Muhammad Muntazir Mehdi, Sivakumar Krishnamoorthy, Michal Wojciech Szczesniak, Agnieszka Ludwikow
Summary: The study identified differentially expressed miRNAs in response to ABA treatment in wild-type Arabidopsis and mutant plants. Potential target genes of these miRNAs were identified and validated using psRNATarget and RT-PCR. The target genes of the identified miRNAs were found to be involved in diverse cellular processes, including development and stomatal movement.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
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
Dora Farago, Laura Zsigmond, Daniel Benyo, Ruben Alcazar, Gabor Rigo, Ferhan Ayaydin, Sahilu Ahmad Rabilu, Eva Hunyadi-Gulyas, Laszlo Szabados
Summary: This study reveals the regulatory role of Small Paraquat resistance protein (SPQ) in the adaptation of higher plants to extreme environmental conditions. Overexpression of SPQ enhances resistance to paraquat and sensitivity to abscisic acid (ABA). Knockout mutant of SPQ1 shows slightly different responses to these substances. Moreover, overexpression of SPQ improves drought tolerance in plants.
PLANT CELL AND ENVIRONMENT
(2022)
Article
Biochemistry & Molecular Biology
Venkateswara Rao, Vijaybhaskar Virupapuram
Summary: Plants respond to drought stress through molecular, biochemical, and cellular processes, with the F-box protein playing a crucial role in specificity for target protein degradation. The F-box protein At1g08710 in Arabidopsis is involved in drought stress adaptation, interacting with other proteins and regulating gene expression to improve plant growth under stress conditions.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2021)
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
Yuxin Cheng, Yanxing Ma, Na Zhang, Rao Lin, Yuan Yuan, Hainan Tian, Saddam Hussain, Siyu Chen, Wenting Yang, Ling Cai, Yingying Li, Xiaoping Wang, Tianya Wang, Shucai Wang
Summary: The study reveals that MYB71 is a transcription factor that regulates ABA responses in Arabidopsis. It functions by regulating the expression of downstream genes involved in plant response to abiotic stresses, thereby enhancing ABA sensitivity in plants.
Article
Plant Sciences
Tom Laloum, Sofia D. Carvalho, Guiomar Martin, Dale N. Richardson, Tiago M. D. Cruz, Raquel F. Carvalho, Kevin L. Stecca, Anthony J. Kinney, Mathias Zeidler, Ines C. R. Barbosa, Paula Duque
Summary: The plant-specific SCL30a SR protein negatively regulates ABA signaling to control seed traits and stress responses during germination in Arabidopsis. Loss of SCL30a function induces ABA-responsive gene expression and genes repressed during germination, resulting in delayed germination and hypersensitivity to ABA and high salinity in scl30a mutant seeds. Transgenic plants overexpressing SCL30a exhibit reduced ABA and salt stress sensitivity.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Plant Sciences
Qian Liu, Guang-rui Dong, Yu-qing Ma, Shu-man Zhao, Xi Liu, Xing-kun Li, Yan-jie Li, Bing-kai Hou
Summary: The UGT85E1 gene plays a crucial role in mediating plant response to drought stress, leading to enhanced tolerance in transgenic rice plants. Its overexpression induces various physiological and metabolic changes in plants under drought conditions. The ectopic overexpression of UGT85E1 in Arabidopsis also results in increased drought tolerance, indicating its potential as a candidate gene for cultivating drought-tolerant crops in both dicots and monocots.
FRONTIERS IN PLANT SCIENCE
(2021)
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
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
Giulia Russo, Serena Capitanio, Marta Trasoletti, Cristina Morabito, Paolo Korwin Krukowski, Ivan Visentin, Andrea Genre, Andrea Schubert, Francesca Cardinale
Summary: The interaction between strigolactones and abscisic acid (ABA) in the acclimation to osmotic stress has been studied in leaf tissues, but little is known about their interaction in root tissues, especially in Arabidopsis. This study aimed to investigate whether strigolactones affect ABA transport across plasma membranes and to understand their role in ABA homeostasis regulation under osmotic stress. The results showed that strigolactones promote the localization of an ABA transporter at the plasma membrane by enhancing its endosomal recycling, suggesting a new mechanism for ABA homeostasis regulation in the context of osmotic stress acclimation.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Plant Sciences
Eugenia Pitsili, Ricardo Rodriguez-Trevino, Nerea Ruiz-Solani, Fatih Demir, Elizabeth Kastanaki, Charlene Dambire, Roger de Pedro-Jove, Dominique Vercammen, Jose Salguero-Linares, Hardy Hall, Melissa Mantz, Martin Schuler, Hannele Tuominen, Frank Van Breusegem, Marc Valls, Sergi Munne-Bosch, Michael J. Holdsworth, Pitter F. Huesgen, Antia Rodriguez-Villalon, Nuria S. Coll
Summary: Increasing drought poses a serious threat to agriculture, and understanding plant response mechanisms is crucial. By using genetic, proteomic, and physiological approaches, the role of AtMC3, a phloem-specific protein, in osmotic stress responses was investigated. The results showed that overexpression of AtMC3 enhances vascular tissue differentiation and maintains higher levels of vascular-mediated transportation, leading to improved drought tolerance.