OsCYBDOMG1, a cytochrome b561 domain-containing protein, regulates salt tolerance and grain yield in rice

Deng, Peng; Cao, Chengjuan; Shi, Xingyu; Jiang, Qun; Ge, Jinjin; Shen, Like; Guo, Chao; Jiang, Ling; Jing, Wen; Zhang, Wenhua

doi:10.1007/s00122-023-04302-4

Cited by 5 publications

(2 citation statements)

References 37 publications

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“…Loss of RST1 function increases the expression of OsAS1 (Asparagine Synthetase 1) and improves nitrogen utilization, which promotes salt tolerance. A naturally occurring decrease in RST1 activity leads to a 10.5% increase in grain yield under salt conditions (Deng et al, 2023). OsCYBDOMG encodes a protein containing the cytochrome b561 domain, which promotes salt tolerance by increasing ascorbic acid (AsA) content and the AsA/DHA ratio.…”

Section: Natural Variations Associated With Rice Salt Tolerancementioning

confidence: 99%

“…A natural change from glycine (G57) to aspartic acid (D57) in the conserved DM13 domain of OsCYBDOMG probably increases its activity, leading to a salttolerant phenotype. As only 1.2% of the indica rice genotypes examined conferred the favorable OsCYBDOMG1 D57 allele, this allele represents a promising genetic tool for improving the salt tolerance of indica varieties (Deng et al, 2023). A recent study on wild African rice identified Salt Tolerance and Heading Date (STH1) as a QTL that negatively regulates salt tolerance but positively regulates heading date.…”

Section: Natural Variations Associated With Rice Salt Tolerancementioning

confidence: 99%

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Designing salt stress‐resilient crops: Current progress and future challenges

Liang,

Li,

Yang

et al. 2024

JIPB

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Excess soil salinity affects large regions of land and is a major hindrance to crop production worldwide. Therefore, understanding the molecular mechanisms of plant salt tolerance has scientific importance and practical significance. In recent decades, studies have characterized hundreds of genes associated with plant responses to salt stress in different plant species. These studies have substantially advanced our molecular and genetic understanding of salt tolerance in plants and have introduced an era of molecular design breeding of salt‐tolerant crops. This review summarizes our current knowledge of plant salt tolerance, emphasizing advances in elucidating the molecular mechanisms of osmotic stress tolerance, salt ion transport and compartmentalization, oxidative stress tolerance, alkaline stress tolerance, and the trade‐off between growth and salt tolerance. We also examine recent advances in understanding natural variation in the salt tolerance of crops and discuss possible strategies and challenges for designing salt stress–resilient crops. We focus on the model plant Arabidopsis (Arabidopsis thaliana) and the four most‐studied crops: rice (Oryza sativa), wheat (Triticum aestivum), maize (Zea mays), and soybean (Glycine max).This article is protected by copyright. All rights reserved.

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Section: Natural Variations Associated With Rice Salt Tolerancementioning

confidence: 99%

Section: Natural Variations Associated With Rice Salt Tolerancementioning

confidence: 99%

Designing salt stress‐resilient crops: Current progress and future challenges

Liang,

Li,

Yang

et al. 2024

JIPB

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Spotlight on cytochrome b561 and DOMON domain proteins

Clúa,

Jaskolowski,

Abriata

et al. 2024

Trends in Plant Science

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OsAAH confers salt tolerance in rice seedlings

Xie,

Xu,

et al. 2024

The Plant Journal

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SUMMARYSoil salinization is becoming a great threat that reduces crop productivity worldwide. In this study, we found that rice allantoate amidohydrolase (OsAAH) expression was significantly upregulated by salt stress, and its overexpression conferred salt tolerance at the seedling stage. Compared to wild type (WT), the contents of ureides (allantoin and allantoate) were significantly increased in Osaah mutants and reduced in OsAAH overexpression lines both before and after salt treatments. Exogenous allantoin significantly promoted salt tolerance in OsAAH overexpression, but not in Osaah mutants. Subcellular localization showed that OsAAH was also localized to the peroxisomes in addition to the previously reported endoplasmic reticulum (ER). The differential expression of peroxisome‐related genes was identified between Osaah mutants and WT. Furthermore, the contents of H2O2 and malondialdehyde (MDA) were significantly accumulated in Osaah mutants and reduced in OsAAH overexpression lines. The activities of antioxidant enzymes were significantly reduced in Osaah mutants and enhanced in OsAAH overexpression under NaCl treatment. The transcription factor OsABI5 could directly bind to OsAAH promoter and activate OsAAH expression. Our findings reveal that OsAAH could be induced by salt stress through the activation of OsABI5 and then confer salt tolerance by enhancing the scavenging capacity of reactive oxygen species (ROS), which contributes to rice breeding in salt tolerance.

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OsCYBDOMG1, a cytochrome b561 domain-containing protein, regulates salt tolerance and grain yield in rice

Cited by 5 publications

References 37 publications

Designing salt stress‐resilient crops: Current progress and future challenges

Designing salt stress‐resilient crops: Current progress and future challenges

Spotlight on cytochrome b561 and DOMON domain proteins

OsAAH confers salt tolerance in rice seedlings

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