Article
Plant Sciences
Yakun Liu, Guifen Wu, Xingxing Ke, Zhifu Zheng, Yueping Zheng
Summary: This study reveals that the ATS1 gene negatively regulates salt resistance in Arabidopsis. Overexpression of ATS1 leads to decreased salt tolerance in terms of seed germination, biomass, chlorophyll content, pod development, and increased root/shoot ratio and anthocyanidin content. Mutations in the ATS1 gene result in higher levels of unsaturated fatty acids, which stabilize the plasma membrane under salt stress. The ats1 mutants also regulate ion homeostasis by upregulating K+ uptake and downregulating Na+ uptake genes.
Article
Biochemistry & Molecular Biology
Xinxin Tang, Lan Wu, Fanlong Wang, Wengang Tian, Xiaoming Hu, Shuangxia Jin, Huaguo Zhu
Summary: In this study, 14 putative S-adenosylmethionine decarboxylase genes were identified in upland cotton, and the ectopic expression of one of these genes in Arabidopsis thaliana resulted in enhanced salinity tolerance through increased spermidine accumulation and activation of salinity resistance-related genes.
DNA AND CELL BIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Feng Kong, Katrina M. Ramonell
Summary: The gene ATL12 plays an important role in the response to salt stress and abscisic acid (ABA) in Arabidopsis thaliana. Overexpression of ATL12 increases the expression of salt stress-associated genes and ABA-responsive genes, and leads to higher levels of reactive oxygen species. Mutants of atl12 are sensitive to salt stress and ABA, and have shorter root length. The findings suggest that ATL12 modulates the response to salt stress and is involved in the ABA signaling pathway.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Plant Sciences
Lei Feng, Yan Li, Yu-Ling Zhou, Guang-Hua Meng, Zhao-Lin Ji, Wen-Hui Lin, Jun-Xian He
Summary: This study investigates the molecular mechanisms of plant responses to salt stress in salt cress. Phenotypic analysis, transcriptomic and proteomic profiling, and other assays were conducted to validate the role of BRs in regulating plant responses to salt stress. The results indicate that BES1 plays a positive role in plant salt tolerance.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Xu Chang, Guoqing Zhu, Shiya Chen, Dan Sun, Hao He, Guoliang Li, Yang Xu, Ziqi Ren, Chang Xu, Shumei Jin
Summary: AtPHB2 gene was cloned from Arabidopsis thaliana and localized in mitochondria, which was found to promote seed germination and plant growth under different stresses, and enhance resistance to saline-alkali and oxidative stresses. Transgenic plants overexpressing AtPHB2 showed higher K+/Na+ ratio and lower H2O2 content after 24 h of salt treatment, indicating its involvement in reducing reactive oxygen species (ROS) levels and improving plant tolerance to salt stresses.
PLANT GROWTH REGULATION
(2021)
Article
Multidisciplinary Sciences
Cesar Augusto Medina, Deborah A. Samac, Long-Xi Yu
Summary: This study investigated the transcriptomic responses to drought and high salinity in alfalfa using different germplasms with varying tolerances, revealing differential expression and post-transcriptional modifications. Additionally, the diversity of circRNA and lncRNA in response to these stresses were identified for the first time in alfalfa. The analysis also identified master genes and isoforms that may play crucial roles in drought and salt stress tolerance in alfalfa.
SCIENTIFIC REPORTS
(2021)
Article
Plant Sciences
Xin-Pei Lue, Kun-Zhong Shao, Jia-Yi Xu, Jia-Lue Li, Wei Ren, Jia Chen, Ling-Yu Zhao, Qi Zhao, Jin-Lin Zhang
Summary: In this study, a heat shock transcription factor gene, HaHSFA1, was cloned from Haloxylon ammodendron and overexpressed in Arabidopsis thaliana to investigate its effects on salt tolerance. The results showed that overexpression of HaHSFA1 increased chlorophyll content, promoted plant growth, increased soluble sugar and proline contents, enhanced antioxidant activity, improved root activity, and increased selective absorption and transport capacity for K+ over Na+. These findings suggest that HaHSFA1 has potential application in improving crop abiotic stress tolerance through genetic engineering.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2022)
Article
Multidisciplinary Sciences
Weichao Wang, Jiayin Pang, Fenghua Zhang, Lupeng Sun, Lei Yang, Tingdong Fu, Liang Guo, Kadambot H. M. Siddique
Summary: Salinity is a major constraint on crop growth and productivity, but understanding the molecular mechanisms of salt-stress adaptation in canola can improve salt tolerance and promote its cultivation in saline lands. In this study, DEGs involved in signal transduction and ROS scavenging were highly expressed under salt stress, and different stages of salt stress affected canola transcript expression differently. Additionally, several transcription factor families associated with salt tolerance were identified. These findings provide a basis for further research on salt stress adaptation in canola.
SCIENTIFIC REPORTS
(2022)
Article
Biotechnology & Applied Microbiology
Li Jiao Sun, Xiao Yu Zhao, Jing Ren, Shao Peng Yan, Xi Yang Zhao, Xing Shun Song
Summary: ChAOX2, isolated from Cerasus humilis, plays a crucial role in salt tolerance in plants. Its transcripts are abundant in old leaves, significantly up-regulated under salt stress, and localized in mitochondria. Overexpression of ChAOX2 increases proline content, peroxidase and superoxide dismutase activities, while reducing relative conductivity and reactive oxygen species levels, suggesting its importance in stress response.
Article
Biochemistry & Molecular Biology
Wenhui Li, Peng Li, Huiyun Chen, Jiliang Zhong, Xiaoqi Liang, Yangfan Wei, Lihua Zhang, Haibo Wang, Deguo Han
Summary: In this study, a new 1R-MYB TF gene, FvMYB114, was obtained from Fragaria vesca and found to enhance the adaptability and tolerance of Arabidopsis thaliana to salt and low temperature. FvMYB114 also promotes the expression of genes related to salt and cold stress, further improving the tolerance of transgenic plants.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Plant Sciences
Ayesha Liaqat, Alamin Alfatih, Sami Ullah Jan, Liangqi Sun, Pingxia Zhao, Chengbin Xiang
Summary: The transcription elongation factor SPT4-2 positively regulates salt tolerance in Arabidopsis thaliana by maintaining ion homeostasis and regulating the expression of stress-responsive genes.
Article
Plant Sciences
Chinnasamy Brindha, Srinivasavedantham Vasantha, Arun K. Raja, Arjun S. Tayade
Summary: The SOS pathway is crucial for ion homeostasis in sugarcane, with SOS genes showing significant upregulation in leaves of tolerant genotypes under salt stress. The differential expression of SOS genes and ion accumulation between tolerant and susceptible genotypes suggests a relationship between SOS gene expression and salinity tolerance.
PHYSIOLOGIA PLANTARUM
(2021)
Article
Plant Sciences
Xiang-yun Zhang, Ling-hui Tang, Jia-wei Nie, Chun-rui Zhang, Xiaonan Han, Qi-yu Li, Li Qin, Mei-hua Wang, Xiahe Huang, Feifei Yu, Min Su, Yingchun Wang, Rui-ming Xu, Yan Guo, Qi Xie, Yu-hang Chen
Summary: This study reveals the activation mechanism of SOS1 under salt stress by determining the different conformations of SOS1 in its auto-inhibited and active states using cryo-electron microscopy. The study proposes an inhibition-release mechanism for SOS1 activation and elucidates how SOS1 controls Na+ homeostasis in response to salt stress.
Article
Plant Sciences
Eva van Zelm, Silvia Bugallo-Alfageme, Pariya Behrouzi, A. Jessica Meyer, Christa Testerink, Charlotte M. M. Gommers
Summary: The root system architecture of plants changes during salt stress exposure. Different accessions of Arabidopsis thaliana adopt different strategies in remodeling their root architecture during salt stress. Salt induces a multiphase growth response in roots, and both the growth rate of main roots during homoeostasis and lateral root appearance are the strongest determinants of overall root architecture. Furthermore, a trade-off between investing in main or lateral root length during salt stress is revealed. By studying natural variation in high-resolution temporal root growth using mathematical modeling, new insights in the interactions between dynamic root growth traits are discovered.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Plant Sciences
Xiangmei Jiao, Boqing Zhao, Baoshan Wang, Fang Yuan
Summary: In this study, an unknown gene, Lb1G04794, was identified, which showed increased expression after NaCl treatment and during salt gland development in Limonium bicolor. Overexpression of Lb1G04794 promoted salt gland development and improved salt tolerance in Arabidopsis.
FRONTIERS IN PLANT SCIENCE
(2022)