在阿根廷火地岛的一个星形藓垫泥炭地的微真菌组成

Q3 Agricultural and Biological Sciences

Darwiniana Pub Date : 2014-07-31 DOI:10.14522/DARWINIANA.2014.21.566

Noelia Paredes, V. F. Consolo, V. Pancotto, C. Fritz, M. Barrera, A. Arambarri, G. Salerno

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引用次数: 2

摘要

南半球的泥炭地储存着大量的土壤碳。尽管它们在全球碳循环中很重要，但对分解过程和相关真菌多样性知之甚少。本研究描述了火地岛护城河(Moat)一个以Astelia (Asteliaceae)和Donatia (Donatiaceae)为主的缓冲泥炭地两个深度的真菌组合组成。从48份样品中分离得到338株。采用不同的培养方法，通过直接和显微镜观察以及分子方法鉴定出38种真菌和18属子囊菌和接合菌。子囊菌属的分离菌数量最多，以青霉属和木霉属为主。我们描述了真菌组成，并比较了两个深度的物种多样性和均匀性。不同深度的多样性指数和均匀度无显著差异。所研究的泥炭是一个具有多种丝状真菌物种的生态系统，其中一些物种在世界其他泥炭地也有描述。

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MICROFUNGAL COMPOSITION IN AN ASTELIA-DONATIA CUSHION PEATLAND IN TIERRA DEL FUEGO, ARGENTINA

Southern Hemisphere peatlands store substantial amounts of soil carbon. Despite their importance in the global carbon cycle, little is known about decomposition processes and the associated fungal diversity. The present study describes the composition of fungal assemblage in two depths from a cushion peatland of predominating Astelia (Asteliaceae) and Donatia (Donatiaceae) species in Moat, Tierra del Fuego. From 48 samples processed, we obtained 338 isolates. Using different culturing methodologies, through direct and microscopic observation and using molecular methods we identified 38 fungal species and 18 genera of Ascomycetes and Zygomycetes. Isolates belonging to Ascomycetes were the most abundant, with dominance of Penicillium and Trichoderma . We described fungal composition and compared species diversity and evenness across two dephts. No differences in the diversity index and evenness were found between depths. The studied peat is an ecosystem that has a great diversity of filamentous fungal species, some of which are described in other peatlands worldwide.

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来源期刊

Darwiniana Agricultural and Biological Sciences-Plant Science

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

26 weeks

期刊介绍： Darwiniana is a half-yearly botanic publication of the Darwinion Botanic Institute, National Counseling of Scientific and Technical Researches (CONICET) - National Acadamey of Exact, Physical and Natural Sciences. Its mission is to publish original scientific papers and reviews from different areas of the botanical issue with the exception of those which nature are agronomical and applied botanical research (of direct transfer). Main articles are usually included in the following sections: Structure and Development; Reproductive Biology; Ecology and Phytogeography; Etnobotany; Genetics; Systematics and Taxonomy of Vascular Plants; Systematics and Taxonomy of non Vascular Plants.