Characterization of Rhodotorula mucilaginosa RSRod01 Isolated from Trifolium sp. Root Nodules Growing at a Pb-Zn Mine Site

IF 1.3 4区生物学 Q4 MICROBIOLOGY

Microbiology Pub Date : 2023-11-28 DOI:10.1134/s0026261723600891

S. Rahal, B. Menaa, D. Chekireb

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Abstract

New advance in plant–microorganism interactions research revealed the ability of plants to affect the composition of root-associated microbial communities, selecting for the microorganisms required for their growth in different ecosystems under stress conditions. Yeasts can play important roles in promoting plant growth; however, little information is available in this regard. In this study, we evaluated the ability of Rhodotorula mucilaginosa RSRod01 strain isolated from the root nodules of Trifolium sp. collected from a Pb-Zn mine soil to promote plant growth in vitro by producing a siderophore and extracellular enzymes, and exhibiting antifungal activity, as well as its tolerance to heavy metals and salinity. The results showed that the isolate possessed important plant growth-promoting (PGP) traits, including the capacity to grow at 4% salt concentration and resistance to high levels of heavy metals. Resistance to heavy metals decreased in the following row: Pb²⁺ > Cu²⁺ > Co²⁺ > Zn²⁺ = Ni²⁺ > Cd²⁺> Cr⁶⁺.

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某铅锌矿三叶草根瘤分离株粘液红霉菌RSRod01的鉴定

摘要植物与微生物相互作用研究的新进展揭示了植物在逆境条件下影响根系相关微生物群落组成，选择不同生态系统生长所需微生物的能力。酵母对植物生长具有重要的促进作用;但是，这方面的资料很少。在本研究中，我们评估了从三叶草根瘤中分离的粘红酵母RSRod01菌株通过产生铁载体和胞外酶促进植物体外生长的能力，并表现出抗真菌活性，以及对重金属和盐的耐受性。结果表明，该分离物具有促进植物生长的重要性状，包括在4%盐浓度下的生长能力和对高浓度重金属的抗性。对重金属的抗性依次下降:Pb2+ >Cu2 +比;二氧化碳+比;Zn2+ = Ni2+ >Cd2 +比;Cr6 +。

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来源期刊

Microbiology 生物-微生物学

CiteScore

2.40

自引率

13.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Microbiology is an is an international peer reviewed journal that covers a wide range of problems in the areas of fundamental and applied microbiology. The journal publishes experimental and theoretical papers, reviews on modern trends in different fields of microbiological science, and short communications with descriptions of unusual observations. The journal welcomes manuscripts from all countries in the English or Russian language.