Article
Biochemistry & Molecular Biology
Pan Yin, Xiaoyan Liang, Hanshu Zhao, Zhipeng Xu, Limei Chen, Xiaohong Yang, Feng Qin, Jingbo Zhang, Caifu Jiang
Summary: This study investigates the molecular mechanisms underlying the exclusion of chloride (Cl-) from shoots and natural variation of salt tolerance in maize. It finds that a type A response regulator (ZmRR1) negatively regulates cytokinin signaling and salt tolerance by inhibiting His phosphotransfer proteins. The study also reveals that ZmRR1 undergoes degradation under saline conditions, leading to the release of ZmHP2 and subsequent improvement of salt tolerance through promoting Cl- exclusion from shoots. Additionally, the study shows that ZmHP2-mediated signaling upregulates ZmMATE29 and its tonoplast-located Cl- transporter function, facilitating Cl- exclusion from shoots. These findings provide important insights into the molecular mechanisms of salt tolerance and offer promising strategies for developing salt-tolerant maize.
Article
Plant Sciences
Laming Pei, Jiajia Liu, Yuanyuan Zhou, Yuhang Jiang, Hui Li
Summary: The study revealed that maize anthocyanins play critical roles in alleviating low phosphate stress in maize plants, possibly by improving photosynthetic performance and increasing Pi mobilization and recycling.
PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS
(2021)
Article
Biotechnology & Applied Microbiology
Ming Zhang, Yidan Li, Xiaoyan Liang, Minhui Lu, Jinsheng Lai, Weibin Song, Caifu Jiang
Summary: This study identifies a HKT1 family gene, ZmNC3/ZmHKT1;2, in maize that plays an important role in regulating shoot Na+ exclusion and salt tolerance. The naturally occurring nonsynonymous SNP (SNP947-G) increases the Na+ transport activity of ZmHKT1;2, leading to improved salt tolerance in maize. Introgression of the SNP947-G ZmHKT1;2 allele into elite maize germplasms reduces shoot Na+ content and promotes salt tolerance.
PLANT BIOTECHNOLOGY JOURNAL
(2023)
Article
Agronomy
Joon Ki Hong, Yeon-Hee Lee, Beom-Gi Kim, Gang Seob Lee, Hee Jeung Jang, Giha Song, Eun Jung Suh, Sang Ryeol Park
Summary: Transgenic maize plants overexpressing the OsPYL/RCAR7 gene showed enhanced drought tolerance, with reduced water loss and improved water use efficiency. They also exhibited higher survival rates and decreased negative effects of drought exposure. The expression levels of drought-tolerance-related genes ABP2 and RAB16A were higher in the transgenic plants compared to the wild type.
Article
Engineering, Chemical
Mingzhu Tao, Xiulin Bai, Jinnuo Zhang, Yuzhen Wei, Yong He
Summary: In this study, a robust leaf chlorophyll content prediction model was developed using hyperspectral imaging and chemometrics methods to analyze the response of chlorophyll content to glyphosate stress. The study found that glyphosate-sensitive plants exhibited significant changes in leaf reflection and photosynthetic activity six days after glyphosate treatment, while glyphosate-resistant plants were able to maintain normal photosynthetic physiological activity.
Article
Multidisciplinary Sciences
Jianjia Miao, Fei Shi, Wei Li, Ming Zhong, Cong Li, Shuisen Chen
Summary: This study introduced the D value to evaluate maize tolerance to low nitrogen stress and found that maize with higher D values exhibited better growth and nitrogen accumulation under low nitrogen conditions. The D value was positively correlated with low nitrogen tolerance. This method may reduce the complexity of investigated traits and enhance the accuracy of stress-tolerant evaluation.
Article
Multidisciplinary Sciences
Wen Ren, Zi Shi, Miaoyi Zhou, Bingbing Zhao, Hanshuai Li, Jiarong Wang, Ya Liu, Jiuran Zhao
Summary: In this study, the proteomic changes in maize leaves under drought stress were investigated using iTRAQ-based protein labeling technology. The results showed that drought stress led to changes in the abundance of a variety of proteins related to cell redox homeostasis, cell wall organization, photosynthesis, abscisic acid biosynthesis, and stress-response processes. The findings provide insights into the overall mechanism of drought-stress tolerance and important information for breeding of drought-tolerant maize.
SCIENTIFIC REPORTS
(2022)
Article
Plant Sciences
Jie Wang, Zhipeng Yuan, Delin Li, Minghao Cai, Zhi Liang, Quanquan Chen, Xuemei Du, Jianhua Wang, Riliang Gu, Li Li
Summary: In this study, the researchers found that anthocyanin plays a crucial role in improving salt tolerance in maize seedlings through transcriptome analysis. Genes related to salt tolerance were mainly involved in redox processes, monomer metabolic processes, catalytic activity, plasma membrane, and metabolic process regulation. Specifically, in the salt-tolerant variety, the genes related to anthocyanin synthesis were strongly induced under salt treatment conditions. Overall, this transcriptome analysis expanded the understanding of the molecular mechanism of anthocyanin in improving salt tolerance in maize seedlings and provided candidate genes for further genetic analysis.
Article
Plant Sciences
Mustafa Yildiz, Hakan Terzi
Summary: The study demonstrates that exogenous cysteine (Cys) can reduce chromium toxicity in rapeseed by promoting plant growth, restoring antioxidant enzyme activities, and modulating defense mechanisms. Proteomic analysis reveals that Cys helps plants overcome chromium stress by modulating energy metabolism, amino acid metabolism, and defense mechanisms.
SOUTH AFRICAN JOURNAL OF BOTANY
(2021)
Article
Engineering, Environmental
Langlang Ma, Rong An, Li Jiang, Chen Zhang, Zhaoling Li, Chaoying Zou, Cong Yang, Guangtang Pan, Thomas Lubberstedt, Yaou Shen
Summary: This study identified ZmHIPP as a gene that positively modulates lead tolerance and accumulation in maize by altering its expression level through genetic variation. ZmHIPP facilitates lead deposition in the cell wall and prevents it from entering intracellular organelles, thereby alleviating lead toxicity in maize seedlings. Compared to mutant lines, wild-type lines accumulate low-toxicity forms of lead, contributing new insights to lead pollution bioremediation in soil.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Plant Sciences
Jun Li, Meiai Zhao, Ligong Liu, Xinmei Guo, Yuhe Pei, Chunxiao Wang, Xiyun Song
Summary: This study investigated the effects of exogenous sorbitol on maize seedlings under PEG-simulated drought stress. Exogenous sorbitol significantly alleviated the growth inhibition caused by PEG-simulated drought stress. The seedlings treated with PEG plus 10 mM sorbitol showed better growth than those treated with PEG, 100 mM sorbitol, and PEG plus 100 mM sorbitol. The application of exogenous sorbitol enhanced the accumulation of osmotic substances and improved antioxidant systems to improve drought tolerance.
Article
Agronomy
Yibo Cao, Xueyan Zhou, Huifang Song, Ming Zhang, Caifu Jiang
Summary: This review article discusses the salt stress response in maize and the breeding of salt-tolerant varieties. Through genomics approaches, QTL related to ion regulation and osmotic tolerance have been identified, and the mechanisms of salt tolerance have been studied. These findings have significant implications for addressing the limited maize production worldwide.
Article
Agronomy
Yue Wang, Kaiqiang Liu, Guoling Liang, Zhifeng Jia, Zeliang Ju, Xiang Ma, Qingping Zhou
Summary: This study identified plant N content, root-crown ratio, and dry weight of aboveground plant parts as important indicators for evaluating the low N tolerance of oat varieties. According to the membership function ranking of the selected oat varieties, Jiayan 2, Qingyongjiu 035, and Qingyin 2 showed strong tolerance to low N stress, while Qingyongjiu 003, Qingyongjiu 021, and Qingyongjiu 016 exhibited poor tolerance to low N stress.
Article
Biochemistry & Molecular Biology
Shiying Geng, Zhaobin Ren, Lijun Liang, Yumei Zhang, Zhaohu Li, Yuyi Zhou, Liusheng Duan
Summary: The novel plant growth regulator B2 effectively improves salt tolerance in maize by enhancing root growth, increasing root/shoot ratio, decreasing ABA level, maintaining higher photosynthetic capacity, boosting antioxidant enzyme activity, and reducing reactive oxygen species generation rate. Additionally, B2 enhances water absorption ability by upregulating aquaporin genes expression.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Hong Zhao, Yawei Wu, Luonan Shen, Qiandong Hou, Rongju Wu, Zhengchun Li, Lin Deng, Xiaopeng Wen
Summary: This study investigated the response of an elite line of Malus mandshurica to low-Pi stress and identified genes and molecular pathways involved in the response. The results showed that the line exhibited tolerance to low-Pi stress, and several candidate genes related to enzyme activity, Pi uptake, and transport were identified. The study provides valuable insights into the mechanisms underlying low-Pi stress tolerance in this line.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
