在早期的谷物发育过程中,各种加入过渡性热应激的表型和转录组反应
Anil Kumar Nalini Chandran1, Puneet Paul1, Balpreet K Dhatt1
1Department of Agronomy and Horticulture, University of Nebraska, Lincoln, NE, United States.
Frontiers in plant science
|August 30, 2024
概括
识别耐热大米需要了解基因表达. 不同的水加入表现出对热应激 (HS) 的多种反应,其中一些独特的激活无折叠蛋白反应 (UPR) 耐受性.
科学领域:
- 植物生物学 植物生物学
- 遗传学 是一个遗传学.
- 农业学是一种农业学.
背景情况:
- 在米粒填充过程中,热应力 (HS) 会降低产量和质量.
- 开发耐热的水品种对于粮食安全至关重要.
- 基因表达的遗传变异可能解释了耐热性差异.
研究的目的:
- 为了研究不同种类的米对热应激的生理和转录基因反应.
- 为了确定有助于大米耐热性的遗传因素.
- 了解基因表达和热敏的谷物特征之间的关系.
主要方法:
- 在短暂的热应激下对10种不同的加入的生理和转录组分析.
- 粒径宽度和厚度作为热敏特征的表征.
- 在三种大米子种群中对基因表达模式的比较分析.
主要成果:
- 颗粒宽度和厚度是单颗粒水平上最热敏的特征.
- 在热敏度方面,大米接入有所不同,其中4个显示耐受性.
- 耐热加入TEJ-5通过OsbZIP50.5独特地激活了未折叠蛋白反应 (UPR).
- 谷物填充调节剂OsbZIP58在中度敏感的IND-2中受到高度诱导.
结论:
- 不同的水加入表现出独特和多样化的基因表达对热应激的反应.
- 展开的蛋白质反应 (UPR) 在特定的水加入中对耐热性起着作用.
- 基因表达变异,并不总是与已知的途径直接相关,有助于大米的差异性耐热性.
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