Microalgae from Eroded Soils in the Northern Fergana Valley, Uzbekistan

IF 1.3 4区生物学 Q4 MICROBIOLOGY Microbiology Pub Date : 2024-07-26 DOI:10.1134/s0026261724605013

Yu. A. Tukhtaboeva, E. S. Krivina, V. V. Red’kina, A. D. Temraleeva

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Abstract

For the first time, the cultivated diversity of microalgae in eroded soils in the northern part of the Fergana Valley in Uzbekistan has been studied based on both morphological and molecular genetic analysis. Ten strains of green microalgae (Chlorophyta) and one charophyte strain (Charophyta) were revealed. Only seven strains could be identified at the species level: Chlorella vulgaris, Chromochloris zofingiensis, Deuterostichococcus epilithicus, Pseudomuriella schumacherensis, and Pseudostichococcus monallantoides. Another four strains were identified only at the genus level and require further study: Bracteacoccus sp., Chlorosarcinopsis sp., Klebsormidium sp., and Tetratostichococcus sp. The low species diversity in the microalgae is likely due to both the low fertility of the eroded soils on the slopes, and the limitations of the culture-based approach that only reveals a fraction of the overall microbial diversity. Microalgal colonization of eroded soils in the arid foothill zone can be facilitated by various adaptations, such as small cell size and the production of extracellular polysaccharides, mycosporine-like aminoacids, and secondary carotenoids. The present work may contribute to the further development of highly functional microalgal consortia, which can lead to improvements and sustainable development of low-productivity, arid, and degraded terrestrial ecosystems.

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乌兹别克斯坦费尔干纳河谷北部侵蚀土壤中的微藻类

摘要根据形态学和分子遗传学分析，首次研究了乌兹别克斯坦费尔干纳河谷北部侵蚀土壤中微藻类的栽培多样性。研究发现了 10 株绿色微藻（叶绿藻）和 1 株褐藻（褐藻）。只有 7 个菌株可以确定为物种：这些菌株分别是：普通小球藻（Chlorella vulgaris）、佐芬吉小球藻（Chromochloris zofingiensis）、表石绿假单胞菌（Deuterostichococcus epilithicus）、舒马赫假单胞菌（Pseudomuriella schumacherensis）和单腔假单胞菌（Pseudostichococcus monallantoides）。另外 4 个菌株仅在属一级得到鉴定，需要进一步研究：微藻类的物种多样性较低，这可能是由于斜坡上侵蚀土壤的肥力较低，以及基于培养的方法只能揭示整体微生物多样性的一部分的局限性。微藻类在干旱山麓地区侵蚀土壤中的定殖可以通过各种适应性来实现，如细胞体积小、产生胞外多糖、类真菌孢子氨基酸和次生类胡萝卜素等。本研究可能有助于进一步发展高功能微藻联合体，从而改善低生产力、干旱和退化的陆地生态系统并实现可持续发展。

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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.