黑色七度内细胞通过修改根形态和促进与细胞壁和酸盐结合来提高玉米的耐受性
Si Chen1, Guangqun Zhang1, Xinran Liang1
1College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China.
Journal of fungi (Basel, Switzerland)
|May 26, 2023
概括
暗隔膜内植物 (DSEs) 通过改善根结构和改变来增强玉米的耐受性.
科学领域:
- 植物病理学 植物病理学
- 环境科学 环境科学
- 生物技术是生物技术.
背景情况:
- 重金属污染对作物生产构成风险.
- 暗隔膜内植物 (DSEs) 是可以与植物结合的真菌.
- DSE显示了改善污染土壤中的植物弹性潜力.
研究的目的:
- 研究DSEs增强玉米对 (Cd) 耐受性的机制.
- 分析DSEs对玉米生长,根形态和Cd吸收的影响.
- 确定DSEs如何影响玉米中的Cd亚细胞分布和化学形式.
主要方法:
- 用不同度的Cd (0-20 mg·kg−1) 进行沙土培养实验.
- 用 DSE 菌株 *Exophiala pisciphila* 接种玉米.
- 评估植物生物质,根形态和Cd含量以及根和芽中的物种化.
主要成果:
- 在Cd压力下,DSE显著改善了玉米生物质,植物高度和根形态.
- DSE增强了Cd在根部的保留,降低了Cd转移系数.
- 在细胞壁和不溶性酸盐形式中,DSEs增加了Cd的比例,同时减少了结合乳酸盐和蛋白质的Cd.
结论:
- 通过改善根形态,DSE殖民增强了玉米的Cd耐受性.
- DSE促进Cd与细胞壁结合,并形成较不活跃的不溶性酸Cd.
- 这些发现阐明了Cd污染土壤中DSE介导的植物修复机制.
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