通过调节生长模式和抗压剂,通过外源性黑激素的应用增强大米基因型的盐耐受性
Mohammad Ubaidillah1, Muhammad Farooq2, Kyung-Min Kim3
1Study program of Agrotechnology Faculty of Agriculture, University of Jember, JI Kalimantan, 37 Kampus Tegal Boto, Jember, East Java, Indonesia.
Scientific reports
|October 25, 2024
概括
黑素的应用增强了米的生长和在盐的条件下承受压力. 它改善了植物生物质,营养吸收,并减少了氧化损伤,有助于从毒性中恢复.
科学领域:
- 植物生理学 植物生理学
- 分子生物学分子生物学
- 农业科学 农业科学
背景情况:
- 黑色素是植物应激反应的关键分子.
- 盐应激严重影响到水的种植和产量.
- 了解黑激素在减轻盐分压力的作用对农业至关重要.
研究的目的:
- 调查外源性黑激素对面临盐应激的水植物的保护作用.
- 评估黑激素对米生长参数,生理特征和基因表达的影响.
主要方法:
- 使用一个因子完全随机的设计,对两种大米品种 (IR64,Silaun) 和四种治疗方法 (对照,黑色素,NaCl,NaCl + 黑色素) 进行了研究.
- 评估了植物生长,叶绿素含量,水含量,离子含量 (Na+,K+) 和氧化应激标志物 (ROS,MDA).
- 进行了抗氧化酶 (OsAPX1,细胞质APX,GPOD,Mn-SOD,Cu/Zn-SOD,CAT) 和与压力相关的基因 (OsLEA) 的基因表达分析.
主要成果:
- 外源性黑激素在盐应激下显著改善了植物的高度,根长,叶面积和生物质.
- 黑色素治疗增加了叶绿素和相对水分含量,烯积累和吸收,同时降低了含量.
- 黑素的应用降低了活性氧物种 (ROS) 和恶性甲酸 (MDA) 水平,表明氧化损伤减少.
- 基因表达分析揭示了抗氧化基因和OsLEA在对盐和黑激素治疗的反应中的差异调节.
结论:
- 外源性黑激素有效地增强了在盐应激下大米植物的生长和生理功能.
- 黑色素通过改善营养平衡,减少氧化应激和调节基因表达来赋予盐分耐受性.
- 黑素显示出在米种植中应用的潜力,以提高对盐度的抵抗力,并帮助从损害中恢复.
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