Differential physiological and proteomic responses of barley genotypes to sulfur availability

文献类型： 外文期刊

第一作者： Qiu, Cheng-Wei

作者： Qiu, Cheng-Wei;Dawood, Muhammad;Zhao, Jing;Wu, Feibo;Zhao, Jing;Chen, Zhong-Hua

作者机构：

关键词： Sulfur deficiency; Hordeum vulgare; Nutrient composition; Ionomics; Proteomics; Amino acids

期刊名称：PLANT GROWTH REGULATION （ 影响因子：3.9； 五年影响因子：3.8 ）

ISSN： 0167-6903

年卷期： 2025 年

页码：

收录情况： SCI

摘要： Sulfur (S) is essential for plant growth, influencing protein synthesis and metabolic processes. However, S deficiency in agricultural soils is becoming more prevalent, negatively affecting crop yields and quality. In barley, where grain protein composition is crucial for malting and brewing, understanding the impact of S on nutrient balance and protein profiles is imperative. This study investigated the effects of S deficiency and supplementation on growth, mineral nutrition, amino acids, proteomics, and yield in two barley cultivars, ZheDa-9 (ZD-9) and Gairdner. Results show that S deprivation significantly reduced plant height, biomass, chlorophyll content, and grain yield, with Gairdner experiencing a 25.7% greater yield loss than ZD-9, indicating its higher sensitivity to S deficiency. Ionomic profiling revealed tissue-specific nutrient depletion, with Gairdner grains showing more pronounced reductions in S (-33.2%), N (-17.1%), Ca (-42.9%), Zn (-16.8%), and Cu (-33.0%). S-deficient grains exhibited altered amino acid profiles, characterized by N-rich amino acid accumulation and S-amino acid depletion. Genotype-specific patterns were observed: ZD-9 showed a 21.4% greater reduction in cysteine, while Gairdner exhibited a 25.4% decline in methionine, exacerbating N: S imbalance. Proteomic analysis revealed genotype-specific responses to S deficiency, with ZD-9 upregulating beta-amylase precursor and alpha-amylase inhibitor CMb, while gamma 3 hordein was downregulated compared to Gairdner. These findings highlight the importance of cultivar-specific sulfur management strategies, offering insights for optimizing S fertilization and selecting S-efficient barley genotypes to improve nutrient homeostasis, yield stability, and malting quality, particularly in low-S soils.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序