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水应激和黑虫养调节了由Metarhizium robertsii殖民的玉米中的植物反应

Imtiaz Ahmad¹, Maria Del Mar Jimenez-Gasco², Mary E Barbercheck¹

¹Department of Entomology, The Pennsylvania State University, University Park, PA 16802, USA.

Pathogens (Basel, Switzerland)

|July 26, 2024

概括

用Metarhizium robertsii接种的玉米植物没有改善对水应激或黑色切虫养的防御. 水处理显著影响了植物生长和防御指标,而不是真菌内菌.

科学领域:

植物病理学植物病理学
农业科学农业科学
微生物生态学微生物生态学

背景情况:

植物利用内菌微生物来防御和促进对环境压力因素的生长.
菌类虫病原体 Metarhizium robertsii 作为内生植物,可能有利于宿主植物.

研究的目的:

为了研究 Metarhizium robertsii (Mr),玉米,黑色切割虫 (BCW) 养和水压力之间的相互作用.
评估这些相互作用对植物生长和防御指标的影响.

主要方法:

在温室实验中,使用了与M. robertsii. 接种或不接种的玉米植物.
强加的水压力 (赤字和过剩) 以及黑色切虫幼虫 (Agrotis ipsilon) 的食.
评估植物生长,防御基因表达,激素水平 (ABA,GA19,GA53) 和二次代谢物 (DIMBOA).

主要成果:

水处理显著影响了植物的叶绿素,高度和生物量,但M. robertsii疫苗注射没有.
无论是水还是M. robertsii治疗都没有影响BCW损伤.
水应激显著改变了基因表达 (bx7, rip2) 和ABA,DIMBOA和GA19的水平;M. robertsii调节了GA53;BCW养影响了GA19和cis-Zeatin (cZ).

结论:

水应激是植物反应的主要驱动因素,显著影响玉米的生长和防御信号通路.
在这项研究中,metarhizium robertsii的注射并没有增强对本研究中测试的非生物和生物应激的保护.
了解复杂的植物应激信号和内生植物相互性对于作物弹性至关重要.

关键词:

克拉维西皮塔家族 (Clavicipitaceae) 是一个梅塔希齐乌姆·罗伯特西 (Metarhizium robertsii) 是一个大陆生物.结核性昆虫病原性真菌真菌的病原性真菌害虫压力害虫压力是一种害虫压力.植物激素植物激素植物防御基因表达基因表达水的压力是水压力.

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