Distribution of 18s rDNA variants of Diderma hemisphaericum (Myxomycota) specimens obtained from moist chambers of materials collected in the Philippines and Vietnam

Q3 Environmental Science Philippine Journal of Systematic Biology Pub Date : 2020-05-11 DOI:10.26757/pjsb2019b13003

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引用次数: 3

Abstract

Since there are only limited biogeographic studies of myxomycetes in Southeast Asia, this study was conducted to assess the molecular diversity of Diderma hemisphaericum, a cosmopolitan myxomycetes species that abundantly occurs in most moist chamber collections in tropical Southeast Asia. Specimens that contain D. hemisphaericum were gathered from various parts of the Philippines: (i) Los Banos, (ii) Calauan, (iii) Basud, (iv) Isarog and (v) Malilipot; and Vietnam: (i) Thai Nguyen (ii) Ha Noi and (iii) Da Nang. Using modern molecular techniques, the common barcode nuclear marker 18S rDNA for myxomycetes was targeted for the 50 specimen used in this study. A total of 27 ribotypes (11 from the Philippines and 16 from Vietnam) were obtained. The Mantel test showed that genetic differentiation among ribotypes is not correlated with geographic distances. The FST index (0.083) indicates high genetic intermixing between the Philippines and Vietnam. Hence, it seems that the variation across regional scale gene pool is not directly influenced by geographic isolation but rather by environmental selection.

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从菲律宾和越南收集的材料湿室中获得的半球黏菌标本18s rDNA变异的分布

由于东南亚对黏菌门的生物地理学研究有限，因此本研究旨在评估半球形Diderma hemisphaerium的分子多样性，这是一种世界性的黏菌门物种，大量存在于热带东南亚大多数潮湿的室内群落中。从菲律宾各地采集了含有半球形D.aericum的标本：（i）Los Banos，（ii）Caluan，（iii）Basud，（iv）Isarog和（v）Malilipot；越南：（i）泰阮（ii）河内和（iii）岘港。利用现代分子技术，针对本研究中使用的50个样本，靶向粘霉菌的常见条形码核标记18S rDNA。共获得27种核糖类型（11种来自菲律宾，16种来自越南）。Mantel检验表明，核糖类型之间的遗传分化与地理距离无关。FST指数（0.083）表明菲律宾和越南之间存在高度的遗传混杂。因此，跨区域尺度的基因库变异似乎不受地理隔离的直接影响，而是受环境选择的影响。

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来源期刊

Philippine Journal of Systematic Biology Environmental Science-Ecology

CiteScore

1.50

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0.00%

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期刊介绍： The Philippine Journal of Systematic Biology (Print ISSN: 1908-6865; Online ISSN: 2508-0342) is an annual, peer-reviewed journal in English that publishes high quality reports of original research and reviews in the field of Taxonomy & Systematics, Ecology and Conservation Biology. The PJSB is a CHED recognized journal under CHED CMO 50 series of 2017. It is also included in the Clavariate Analysis (formerly a subsidiary of Thomson Reuters) Master Journal List under Zoological Record, BIOSIS Previews and Biological Abstracts.The PJSB is the official publication of the Association of Systematic Biologists of the Philippines (SEC Registration: Association of Philippine Taxonomists, Inc.). The organization financially supports the journal and all its endeavors. The journal aims to build up quality information on animal, plant and microbial diversity in the Philippines. Articles dealing with original research or reviews in Zoological, Botanical or Microbial Systematics, Ecology and Conservation Biology are welcome. Authors are advised to consult a recent issue of PJSB for the current format and style. All manuscripts are reviewed by at least two qualified referees.