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转基因甘含有较高水平的BRK1显示改善了干旱耐受性

J Ashwin Narayan¹, V M Manoj¹, Gauri Nerkar¹

¹Division of Crop Improvement, ICAR-Sugarcane Breeding Institute (SBI), Tamil Nadu, Coimbatore, 641007, India.

Plant cell reports

|August 14, 2023

概括

经过基因工程改造以过度表达BRICK1 (BRK1) 基因的转基因甘显示出增强的干旱耐受性. 这种改善与BRK1有关.

科学领域:

植物分子生物学植物分子生物学
植物生理学植物生理学
生物技术是生物技术.

背景情况:

众所周知,BRICK1 (BRK1) 基因会影响叶子表皮细胞的发育和分裂,包括actin聚合.
之前还没有确定BRK1对植物应激耐受性的作用,特别是干旱.
之前的研究表明,干旱耐受性Erianthus arundinaceus在压力下的BRK基因表达高.

研究的目的:

调查BRK1在甘干旱耐受性的作用.
为了确定从Saccharum spontaneum中过度表达BRK1是否会提高商业甘品种Co 86032.2.的干旱耐受性.

主要方法:

用Saccharum spontaneum的干旱反应性BRK1基因对甘 (种类Co 86032) 的基因转化.
将转基因甘生产线和野生类型的控制置于干旱压力条件下.
对生理参数的分析,以评估转基因线的干旱耐受性.
对叶子表皮细胞进行显微镜检查,观察细胞形态.

主要成果:

转基因甘系在干旱压力下表现出明显更高的BRK1转基因表达,与野生类型对照相比.
过度表达BRK1的甘系表现出改善的生理参数,表明干旱耐受性提高.
在干旱压力期间,在转基因系中观察到BRK1表达的特征特征,即表皮叶细胞中的边缘叶片相互锁定.

结论:

BRK1在甘适应干旱压力的过程中起着重要作用.
过度表达BRK1通过调节actin聚合和表皮细胞结构,提高了甘的干旱耐受性.
BRK1是基因工程的潜在候选基因,用于提高作物对干旱的抵抗力和生物质生产.

关键词:

这就是BRK1的原因.干旱干旱干旱干旱在S. spontaneum中,它们是自发的.

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