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多能根茎细菌同时减轻度压力,改善黑子 (Nigella sativa L.) 的生长和生理特征

Dilfuza Jabborova^1,2, Mukaddam Nurmatova³, Neha Bisht⁴

¹Institute of Genetics and Plant Experimental Biology, Uzbekistan Academy of Sciences, , Kibray, 111208, Uzbekistan. dilfuzajabborova@yahoo.com.

Scientific reports

|November 29, 2025

概括

促进植物生长的根茎细菌 (PGPR) 减轻了黑中的土壤盐度压力. 特定的Bacillus菌株显著增强了生长,根部发育和生理特征,改善了作物的弹性.

科学领域:

农业科学农业科学
微生物学微生物学
植物生理学植物生理学

背景情况:

土壤盐度是一个主要的非生物压力,它对作物生长,发展和产量产生负面影响,对全球粮食安全构成重大威胁.
促进植物生长的草原细菌 (PGPR) 是殖民植物根的微生物,可以增强植物生长,营养吸收和耐压力.
PGPR提供了一种可持续和环保的方法,以减轻土壤盐度对农作物的不利影响.

研究的目的:

隔离和识别有效的PGPR菌株,能够减轻黑 (Nigella sativa L.) 中的盐度压力.
评估包括Bacillus subtilis IGPEB 1,Bacillus altitudinis IGPEB 8,Bacillus endophyticus IGPEB 33和Pseudomonas koreensis IGPEB 17在内的选定的根茎细菌在盐应激下对黑的生长和生理特征的影响.
确定PGPR的财团在增强黑的抗盐能力方面的潜力.

主要方法:

从黑植物的根球中分离和描述PGPR.
在受控的盐度压力条件下,用单个PGPR菌株和联盟对黑苗进行注射.
评估植物生长参数 (芽长,根长),生理特征 (叶绿素含量,胡卜素含量,相对水含量) 和抗氧化酶活动.

主要成果:

高度杆菌IGPEB 8和Bacillus endophyticusIGPEB 33显著增加了发芽长度和总根长度.
细菌内菌IGPEB 33显著增强了根的总长度,预测面积和根表面积.
应用Bacillus altitudinis IGPEB 8和Bacillus endophyticus IGPEB 33导致总叶绿素,叶绿素a,叶绿素b,胡卜素含量,抗氧化能力和相对水含量的显著改善,其中一个联盟显示出积极的协同效应.

结论:

精选的PGPR菌株,特别是Bacillus altitudinis IGPEB 8和Bacillus endophyticus IGPEB 33,有效地减轻了黑中的盐应激.
这些PGPR促进植物生长并增强生理属性,有助于在盐水条件下提高作物性能.
结果表明,PGPR的应用,特别是在联盟中,代表了盐受影响地区可持续农业的有希望的战略.

关键词:

细菌种类. 细菌种类.伪 koreensis,光合作用色素的颜料.抗氧化剂酶是一种抗氧化酶.这是PGPR的PGPR.根的生长根的生长盐土是一种盐土.

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