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在盐水应激下,固细菌和状菌根菌之间的相互作用

Chao Ji^1,2,3,4, Yuhan Ge⁵, Hua Zhang^1,2

¹College of Seed and Facility Agricultural Engineering, Weifang University, Weifang, China.

Frontiers in microbiology

|April 18, 2024

概括

耐固化细菌 (HNFB) 提高了作物对盐的耐受性. 它们对状菌根真菌 (AMF) 群体的影响取决于土壤的含量,影响土壤特性和微生物相互作用.

科学领域:

土壤微生物学土壤微生物学
植物与微生物的相互作用
农业科学农业科学

背景情况:

土壤盐度是农作物生产率的一个主要限制.
耐受性固细菌 (HNFB) 和状菌 (AMF) 对于改善盐土作物的营养可用性和盐耐受性至关重要.
了解HNFB和AMF之间的相互作用对于开发用于盐水环境的有效生物肥料至关重要.

研究的目的:

调查HNFB接种在不同度下对果根球中的AMF社区的影响.
确定土壤的可用性如何调解HNFB对土壤物理化学性质和微生物群落的影响.
确定最佳的HNFB-AMF组合,以提高盐土中的作物生产率.

主要方法:

果植物遭受了盐应激,有三个气应用水平:低 (N0),正常 (N1) 和高 (N2).
实验组包括对照组 (CK,没有细菌) 和生物注射 (BIO) 组,其混合的细菌制剂是 * Bacillus subtilis * 和 * Bacillus velezensis *.
分析了土壤的物理化学特性和树根球微生物群落组成,包括AMF多样性和基因丰富性.

主要成果:

接种HNFB显著增加了微生物生物质和根球土壤中的β-葡萄糖酶相关基因的丰富性.
高度降低了AMF的多样性和关键酶相关基因 (β-葡萄糖酶,酸酶,尿素) 的丰富性.
应用和HNFB处理之间观察到显著的相互作用,影响土壤特性和AMF丰度,HNFB应用增加了*Glomus-MO-G17-VTX00114*的相对丰度.

结论:

果根球中HNFB对AMF群落的影响受到土壤气可用性的显著调节.
含量在外部HNFB,土壤特性和原生根球微生物群之间的相互作用中起着关键作用.
这些发现强调了在利用HNFB-AMF联盟来改善盐土作物弹性时考虑管理的重要性.

关键词:

这种类型的状菌根真菌是状菌根真菌.具有耐受性固细菌的固细菌.化肥化肥化肥化肥促进植物生长的树枝细菌盐的压力是盐的压力.

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