内植物对Glycine max (L.) merrill的形态,生化和分子变化的改善作用. 在干旱压力条件下
Selvaraj Perumal1, Mariyappan Hariharan1, Muthukrishnan Arun2
1PG and Research Department of Botany, Jamal Mohamed College (Autonomous), Affiliated to Bharathidasan University, Tiruchirappalli, Tamil Nadu 620020 India.
概括
内生菌和真菌通过增强植物新陈代谢和抗氧化剂防御来改善大豆生长和耐旱性. 这些有益的微生物在压力条件下为可持续农业提供了一个有希望的战略.
科学领域:
- 植物病理学 植物病理学
- 微生物学 微生物学
- 农业学是一种农业学.
背景情况:
- 内植物为面临生物和非生物压力的宿主植物带来了显著的好处.
- 干旱压力严重影响大豆生产,需要制定提高植物弹性的战略.
研究的目的:
- 为了研究外部应用的*Sinorhizobium meliloti* NOR1和*Talaromyces flavus* AVRF3 (单独和作为一个coinoculum) 对干旱压力下的大豆植物的影响.
- 评估这些内植物对大豆的形态,生理,生化和基因表达特征的影响.
主要方法:
- 大豆种子和植物被内性细菌 (*S. meliloti* NOR1) 和真菌 (*T. flavus* AVRF3) 接种.
- 评估包括体外发芽,人工干旱应激耐受性,植物生长参数 (射长,生物量),代谢物分析,抗氧化酶活性测定和基因表达分析 (*GmPIN1A*, *GmPIF*).
- 通过再隔离和扫描电子显微镜 (SEM) 确认了内菌殖民.
主要成果:
- 在体外条件下,内性治疗显著增强了大豆种子的发芽和干旱耐受性.
- 与对照组相比,经过处理的大豆植物表现出更好的发芽长度,以及新鲜/干燥发芽和根的重量.
- 代谢物水平,抗氧化酶活动和像*GmPIN1A*和*GmPIF*这样的基因表达受到干旱压力下的内细胞的有利调节.
结论:
- 应用内性 *S. meliloti* NOR1 和 *T. flavus* AVRF3,单独或组合,有效地促进大豆生长,提高对干旱压力的耐受性.
- 这些内细胞重编程关键的植物过程,包括光合作用色素,生物化学含量和抗氧化剂反应,从而在不利条件下改善植物性能.
- 植物内生微生物应用是改善大豆在水有限环境中的弹性和生产力的可行策略.
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