皮虫 (Trichoderma harzianum) 通过增加植物抗氧化酶活性和调节树枝球微生物群体,防止红豆根腐烂
Zhifen Guo1, Jiaxing Zhang2,3, Zhibin Liu1
1College of Resources and Environment, Shanxi Agricultural University, Taiyuan, China.
Frontiers in microbiology
|April 4, 2024
概括
用Trichoderma harzianum进行预注射可以有效地对抗由Fusarium oxysporum引起的红色豆根腐. 这种有益的真菌增强了植物的生长,增强了抗氧化酶的活性,并促进了更健康的树根球微生物社区,以提高作物产量.
科学领域:
- 植物病理学 植物病理学
- 农业微生物学 农业微生物学
- 植物生理学 植物生理学
背景情况:
- 根腐,主要是由Fusarium oxysporum引起的,显著降低了红豆 (Phaseolus vulgaris) 的产量.
- 特里科德玛哈尔齐安 (Trichoderma harzianum) 已因其在减轻包括根腐烂在内的植物疾病方面的潜力而得到认可.
研究的目的:
- 调查Trichoderma harzianum (T891) 对红色豆根腐烂的发生率和严重性的影响.
- 评估T891对红豆植物生长,防御酶活性和根茎球微生物群体组成的影响,当与Fusarium oxysporum (Fu13) 挑战时.
主要方法:
- 一个实验进行了四种治疗方法:控制 (CK),Fusarium oxysporum (Fu13),Trichoderma harzianum (T891),以及T891 + Fu13的组合.
- 通过高通量测序分析了植物生长参数,根腐发生率和严重程度,防御酶活动 (SOD,POD,CAT,MDA) 和树根球微生物社区组成.
主要成果:
- 与单独使用Fu13相比,T891显著降低了根的发生率和严重程度,分别为40.62%和68.03%.
- T891增强了植物生长,使根长度,芽长度和总干燥生物质分别增加了48.63%,97.72%和122.17%.
- T891提高了抗氧化酶活性 (SOD,POD,CAT) 和降低了甲基 (MDA),同时也丰富了树枝球中的 Porphyrobacter 和 Lysobacter 等有益细菌,从而导致更稳定的微生物网络.
结论:
- 皮草 (Trichoderma harzianum) 有效地促进红色豆的生长,并抑制根腐.
- T891通过改善抗氧化酶活性来增强植物防御机制.
- T891积极调节树根球微生物群落,减少病原体的丰富性和促进有益细菌,这有助于抑制疾病和改善植物生物量.
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