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两种转录因子对抗性微调MIR1863a以平衡米的阻力和产量特征

Zhang-Wei Hu¹, Jun-Hua Wang¹, Xiao-Yu Xiong¹

¹State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, China.

Plant biotechnology journal

|July 29, 2025

概括

米微RNA (miRNAs) 能够平衡抗病能力和产量. MIR1863a突变增强了无产量损失的抗爆性,由转录因子MADS51和ESR1.1调节.

科学领域:

植物分子生物学植物分子生物学
植物遗传学农作物遗传学
植物病理学植物病理学

背景情况:

植物的免疫激活通常会导致与生长的权衡,导致作物产量减少.
识别协调疾病耐药性和作物产量的基因对于改善农业至关重要.
微RNAs (miRNAs) 正在成为具有平衡抗性和产量潜力的关键调节者.

研究的目的:

调查MIR1863a在调节抗爆病耐药性和大米作物产量之间的权衡中的作用.
确定控制MIR1863a表达的监管机制及其对收益率特征的影响.
探索操纵MADS51-ESR1-MIR1863a途径以改善作物的潜力.

主要方法:

在大米中研究MIR1863a的基因突变和过度表达.
对MIR1863a表达的转录因子结合和调节的分析.
对抗疾病和产量相关特征的表型评估 (例如,恐慌数,种子设置率).
在不同加入中对MADS51和ESR1的哈普洛型分析.

主要成果:

MIR1863a的突变增强了不损害产量的水抗爆能力,增加了恐慌数量.
MIR1863a的过度表达或突变对种子设置率等产量特征产生了负面影响.
作为对病原体入侵的反应,MIR1863a的表达受到MADS51 (激活器) 和ESR1 (抑制器) 的对抗调节.
此外,MADS51的突变还增强了抗爆炸性,而不会导致产量损失.
MADS51和ESR1的不同类型与大米亚种的不同抗病表型相关.

结论:

涉及MADS51,ESR1和MIR1863a的监管机制微调miRNA水平,以平衡米病耐药性和产量.
这一途径为增强抗病能力和最佳产量的育种作物提供了一个新的目标.
这种监管模块的分种特定演变表明,有不同的策略来管理水中抗性-产量权衡.

关键词:

在ESR1中使用ESR1.在 MADS51 里面,爆发性疾病耐药性爆发性疾病耐药性在 miR1863a 中.收益率的特征收益率的特征收益率的特征

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