Diversity and composition of fungal communities across diverse environmental niches in Antarctica

IF 1.5 4区地球科学 Q3 ECOLOGY

Polar Science Pub Date : 2023-12-01 DOI:10.1016/j.polar.2023.100973

Namrata Jiya , Prafulla Shede , Avinash Sharma

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引用次数: 0

Abstract

Antarctica harbours a wide range of extreme and diverse ecological niches that support diverse group of microorganisms, making it important to investigate the microbial diversity of this pristine environment. The current study focuses on the diversity and distribution of fungi in diverse environmental niches like exposed soil, accumulated snow, deep sea, and lake sediments in the Larsemann Hills, Antarctica. Ascomycota (61.7%) was the most dominating phylum followed by Basidiomycota (31.1%), Chytridiomycota (5.7%) and Rozellomycota (1.4%). The families Camptobasidiaceae (23.1%), Cladosporiaceae (15.3%), Kriegeriaceae (8.2%), Mycosphaerellaceae (6.8%) and Helotiaceae (6.2%), while at the genus level Glaciozyma (24.8%), Cladosporium (16.8%), Phenoliferia (8.8%), Acrodontium (8%), and Aspergillus (5.4%) were highly prevalent. Interestingly, Austroplaca genus which is mostly indigenous to polar regions was exclusively detected in the accumulated snow sediments. Among the four heterogenous environments analyzed, lake sediments were shown to have a higher number of amplicon sequence variants (ASVs) than the other environments.

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南极洲不同环境生态位真菌群落的多样性和组成

南极洲拥有各种极端和多样的生态位，支持着各种微生物，因此研究这一原始环境的微生物多样性非常重要。目前的研究重点是南极洲拉尔斯曼丘陵裸露土壤、积雪、深海和湖泊沉积物等不同环境壁龛中真菌的多样性和分布情况。子囊菌门（61.7%）是最主要的门类，其次是担子菌门（31.1%）、糜烂菌门（5.7%）和子囊菌门（1.4%）。Camptobasidiaceae 科（23.1%）、Cladosporiaceae 科（15.3%）、Kriegeriaceae 科（8.2%）、Mycosphaerellaceae 科（6.8%）和 Helotiaceae 科（6.2%），而在属一级，Glaciozyma 科（24.8%）、Cladosporium 科（16.8%）、Phenoliferia 科（8.8%）、Acrodontium 科（8%）和 Aspergillus 科（5.4%）非常普遍。有趣的是，在积雪沉积物中只检测到主要产于极地的奥斯特普拉卡属。在分析的四种异源环境中，湖泊沉积物的扩增子序列变异（ASVs）数量高于其他环境。

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来源期刊

Polar Science ECOLOGY-GEOSCIENCES, MULTIDISCIPLINARY

CiteScore

3.90

自引率

5.60%

发文量

期刊介绍： Polar Science is an international, peer-reviewed quarterly journal. It is dedicated to publishing original research articles for sciences relating to the polar regions of the Earth and other planets. Polar Science aims to cover 15 disciplines which are listed below; they cover most aspects of physical sciences, geosciences and life sciences, together with engineering and social sciences. Articles should attract the interest of broad polar science communities, and not be limited to the interests of those who work under specific research subjects. Polar Science also has an Open Archive whereby published articles are made freely available from ScienceDirect after an embargo period of 24 months from the date of publication. - Space and upper atmosphere physics - Atmospheric science/climatology - Glaciology - Oceanography/sea ice studies - Geology/petrology - Solid earth geophysics/seismology - Marine Earth science - Geomorphology/Cenozoic-Quaternary geology - Meteoritics - Terrestrial biology - Marine biology - Animal ecology - Environment - Polar Engineering - Humanities and social sciences.