Salwan R, Sharma V, Saini R, Pandey M
College of Horticulture and Forestry, Dr YS Parmar University of Horticulture & Forestry, Neri, 177 001 HP, India.
University Centre for Research and Development, Chandigarh University, 140 413, India.
Curr Res Microb Sci. 2021 Jul 7;2:100046. doi: 10.1016/j.crmicr.2021.100046. eCollection 2021 Dec.
The use of synthetic pesticides and chemicals to continuously increase agricultural productivity is causing severe damage to our ecosystem. Therefore, there is need to enhance our understanding about the factors which can contribute to soil processes and play key role in developing sustainable agricultural ecosystem. In this context, the bacteria from cauliflower rhizosphere were isolated and characterized for different plants beneficial attributes. The relationship of soil bacteria and its elemental composition was examined using canonical correspondence analysis. The elemental composition analysis of soil samples revealed presence of Mg, Al, Si, P, K, Ca, Fe and their oxides. In addition, the isolates were found positive for phosphorus solubilization, siderophore, chitinase and protease activity, and indole acetic acid type of growth regulator. The direct confrontation assay revealed antagonistic behavior of these isolates against and . The promising isolates were identified and affiliated to closely related species of genus in phylogenetic relationship. The canonical correspondence analysis revealed distribution of elements and their relationship with the identified species in particular area. The characteristics of these isolates revealed their potential in alleviating the biotic and abiotic stresses and hence enhancing crops yield without the usage of synthetic fertilizers and pesticides. The present study is first of its kind and will open new avenues to explore microbial community structure across different farmlands soils to develop resilience agricultural ecosystem.
使用合成农药和化学物质来持续提高农业生产力正在对我们的生态系统造成严重破坏。因此,有必要加强我们对有助于土壤过程并在发展可持续农业生态系统中发挥关键作用的因素的理解。在此背景下,从花椰菜根际分离出细菌,并对其不同的植物有益特性进行了表征。使用典范对应分析研究了土壤细菌与其元素组成的关系。土壤样品的元素组成分析表明存在镁、铝、硅、磷、钾、钙、铁及其氧化物。此外,分离物被发现具有磷溶解、铁载体、几丁质酶和蛋白酶活性以及吲哚乙酸类型的生长调节剂呈阳性。直接对峙试验揭示了这些分离物对[此处原文缺失两种菌名]的拮抗行为。在系统发育关系中,对有前景的分离物进行了鉴定并归类到[此处原文缺失属名]的密切相关物种。典范对应分析揭示了特定区域内元素的分布及其与已鉴定物种的关系。这些分离物的特性表明它们在减轻生物和非生物胁迫方面具有潜力,从而在不使用合成肥料和农药的情况下提高作物产量。本研究尚属首次,将为探索不同农田土壤中的微生物群落结构以发展有复原力的农业生态系统开辟新途径。