Article
Plant Sciences
Michaela Kameniarova, Martin Cerny, Jan Novak, Vladena Ondriskova, Lenka Hruskova, Miroslav Berka, Radomira Vankova, Bretislav Brzobohaty
Summary: The quality of light affects the response of Arabidopsis plants to cold treatment, with blue light enhancing the effect of low temperature and red light inducing higher expression of chloroplast-related proteins. Blue light mainly increased the expression of cold-stress-related proteins.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Agronomy
Shuxia Li, Zhihao Cheng, Zhibo Li, Shiman Dong, Xiaoling Yu, Pingjuan Zhao, Wenbin Liao, Xiang Yu, Ming Peng
Summary: The analysis of drought-related genes in cassava reveals the involvement of MeSPL9 in drought stress tolerance, with overexpression of a dominant-negative form of this gene showing negative roles in drought stress resistance. MeSPL9 expression is strongly repressed by drought treatment. Overexpression of rMeSPL9-SRDX in cassava conferred drought tolerance without affecting overall growth, leading to increased osmoprotectants and JA levels. This study suggests that MeSPL9 affects drought resistance by modulating protectant metabolite levels and JA signaling pathways, providing implications for engineering drought tolerant crops.
THEORETICAL AND APPLIED GENETICS
(2022)
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
Plant Sciences
Kora Vyse, Stephanie Schaarschmidt, Alexander Erban, Joachim Kopka, Ellen Zuther
Summary: This study investigates the metabolic and transcriptomic changes in plants during cold priming and triggering. The research findings suggest that genes involved in cell wall remodeling and stress response regulation are induced during triggering, while the expression of late embryogenesis abundant proteins and antifreeze proteins is higher during priming. Moreover, the study indicates that a cold triggering stimulus might be perceived as a milder stress compared to priming in plants.
PHYSIOLOGIA PLANTARUM
(2022)
Article
Plant Sciences
Meng Li, Xiaoyu Duan, Ge Gao, Tao Liu, Hongyan Qi
Summary: This study revealed that arginine decarboxylase (ADC) functions as a positive regulator of melon seedling cold tolerance, with the transcription factors CmABF1 and CmCBF4 directly targeting ADC to trigger its expression. Additionally, other CBF and ABF members were also found to have functional redundancy and complementarity with CmABF1 and CmCBF4.
HORTICULTURE RESEARCH
(2022)
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
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
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
Biochemical Research Methods
Aruni Y. Alahakoon, Eden Tongson, Wei Meng, Zi-Wei Ye, Derek A. Russell, Mee-Len Chye, John F. Golz, Paul W. J. Taylor
Summary: This study developed an in-vitro regeneration protocol for rapid-cycling Brassica napus (B. napus-RC) using cotyledons as the explant. High regeneration percentages were achieved by including specific growth regulators in the regeneration medium. Transformation of B. napus-RC was successfully carried out using Agrobacterium-mediated transformation, resulting in transgenic plants overexpressing AtACBP6. These transgenic plants exhibited improved cold tolerance and higher yields compared to the wild type. The results suggest that B. napus-RC can serve as an effective trait testing platform for canola, and the overexpression of AtACBP6 shows potential for enhancing cold tolerance in canola.
Article
Plant Sciences
Zhen Wang, Xu Li, Xiao-ru Gao, Zhuo-ru Dai, Kui Peng, Li-cong Jia, Yin-kui Wu, Qing-chang Liu, Hong Zhai, Shao-pei Gao, Ning Zhao, Shao-zhen He, Huan Zhang
Summary: This study reveals the regulatory role of the IbMYB73-IbGER5 module in root development and abiotic stress tolerance in sweet potato, providing candidate genes for the development of elite crop varieties with well-developed root-mediated abiotic stress tolerance.
Article
Multidisciplinary Sciences
Jiao Xue, Dongbai Lu, Shiguang Wang, Zhanhua Lu, Wei Liu, Xiaofei Wang, Zhiqiang Fang, Xiuying He
Summary: Leaf senescence in rice is a precisely modulated developmental process that affects agronomic traits. This study identified key genes and metabolites involved in the flavonoid pathway in leaf senescence, as well as a MYB transcription factor that suppresses the expression of certain genes. Integrated analysis of transcriptome and metabolome contributes to understanding the molecular mechanism of leaf senescence in rice.
SCIENTIFIC REPORTS
(2021)
Article
Plant Sciences
Cheng Zhang, Chenchen Tong, Lei Cao, Pengpeng Zheng, Xiaofeng Tang, Lihuan Wang, Min Miao, Yongsheng Liu, Shuqing Cao
Summary: This research uncovered a novel regulatory cascade that significantly influences Cd tolerance in Arabidopsis. The WRKY33-ATL31-IRT1 module plays a crucial role in blocking Cd absorption and preventing metal toxicity. WRKY33 activates the transcription of ATL31, which in turn targets IRT1 for degradation in response to Cd stress.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Plant Sciences
Selin Buelbuel, Yasuhito Sakuraba, Mastoureh Sedaghatmehr, Mutsumi Watanabe, Rainer Hoefgen, Salma Balazadeh, Bernd Mueller-Roeber
Summary: BBX14 is a negative regulator of nitrogen starvation-induced leaf senescence and is directly regulated by PIF4 and MYB44. It directly regulates the transcription of EIN3, which is involved in nitrogen signaling and leaf senescence.
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
Zhiyang Yuan, Kai Fan, Yuntong Wang, Li Tian, Chaopu Zhang, Wenqiang Sun, Hanzi He, Sibin Yu
Summary: This study cloned and characterized the rice seed storability-related gene OsGH3-2, which was shown to affect seed storability by regulating the accumulation level of abscisic acid (ABA). Transgenic, knockout, and knockdown experiments revealed that OsGH3-2 acted as a negative regulator of seed storability by modulating genes related to the ABA pathway and late embryogenesis-abundant proteins.