Molecular Confirmation on the Phylogenetic Position of the Genus Clemensiella Schltr. in Marsdenieae (Apocynaceae - Asclepiadoideae)

Q3 Environmental Science Philippine Journal of Systematic Biology Pub Date : 2010-06-11 DOI:10.3860/pjsb.v4i0.1564

Arleen L Buera, O. Laurente, Bismark Oliver C Lemana, G. D. Alejandro

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引用次数: 1

Abstract

The Philippine Marsdenieae (Apocynaceae-Asclepiadoideae) comprises a total of seven genera including the imperfectly known Clemensiella Schltr. Due to its unique morphology, the position of the small genus in the tribe Marsdenieae of Asclepiadoideae was previously in question. In this first molecular study of Clemensiella , the internal transcribed spacer (ITS, nrDNA) region of three isolates were newly generated and analyzed together with previous published sequences. The present aims to assess the phylogenetic positon, monophyly and closely-related genera of Clememsiella . The three Clemensiella isolates yielded a total of 630 to 642 base pairs (bp) and the average GC content ranged from 63.21% to 63.86%. Based on the strict consensus tree, the monophyly of Clemensiella is highly supported with BS = 100% and nested within the tribe Marsdenieae with BS = 61%. This study confirms the phylogenetic position of Clemensiella in Marsdenieae and its close relation to Dischidia and Hoya . Although the three Marsdenieae are distinct in their seed structures, they share common features in habit, inflorescence and corolla aestivation. KEYWORDS: Clemensiella ; ITS, Marsdenieae; Apocynaceae; Asclepiadoideae DOI: 10.3860/pjsb.v4i0.1564 P hilippine Journal of Systematic Biology Vol. IV (June 2010) 55-66

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Clemensiella Schltr属系统发育位置的分子确认。麻瓜亚科麻瓜亚科

菲律宾麻蝇科(apocynacae - asclepiadoideae)共有7个属，其中包括不完全为人所知的Clemensiella Schltr。由于其独特的形态，小属在Asclepiadoideae部落Marsdenieae中的位置之前一直存在疑问。本文首次对Clemensiella进行了分子研究，新生成了三个分离株的内部转录间隔区(ITS, nrDNA)，并与先前发表的序列进行了分析。本文旨在评价克莱门氏菌的系统发育位置、单系性和近缘属。3株Clemensiella分离物共获得630 ~ 642碱基对(bp)，平均GC含量为63.21% ~ 63.86%。基于严格共识树，Clemensiella的单系性得到高度支持，BS = 100%，嵌套在Marsdenieae部落中，BS = 61%。本研究证实了Clemensiella在马氏科的系统发育地位及其与Dischidia和Hoya的亲缘关系。虽然这三种马蹄莲属植物的种子结构不同，但它们在习性、花序和花冠发育方面具有共同的特征。关键词:克莱门氏菌;其Marsdenieae;夹竹桃科;菲律宾系统生物学杂志Vol. IV(2010年6月)55-66

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Philippine Journal of Systematic Biology Environmental Science-Ecology

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1.50

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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.