Scholarlink

<p>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.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Differential physiological and proteomic responses of barley genotypes to sulfur availability

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年7月7日

查看全文
  • Cheng-Wei Qiu,
  • Muhammad Dawood,
  • Jing Zhao,
  • Zhong-Hua Chen,
  • Feibo Wu

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.