eHALOPH - Halophytes Database

Publication Type	J
Authors	Vy, NX; Bujang, JS; Papenbrock, J
Author Full Name	Nguyen Xuan Vy; Bujang, Japar Sidik; Papenbrock, Jutta
Title	Variability of leaf morphology and marker genes of members of the halophila complex collected in Viet Nam
Source	AQUATIC BOTANY
Language	English
Document Type	Article
Author Keywords	Halophila; matK; Phylogenetic analysis; rbcL
Keywords Plus	H-MINOR COMPLEX; ZOSTERA-MARINA; SEQUENCE DATA; LAND PLANTS; HYDROPHILOUS ANGIOSPERMS; POSIDONIA-AUSTRALIS; MAXIMUM-LIKELIHOOD; DNA BARCODE; MATK GENE; HYDROCHARITACEAE
Abstract	Seagrasses are marine angiosperms and adapted to aquatic life several times independently. In tropical as well as in temperate regions they play an important role in the coastal ecosystem. Classification according to morphology remains difficult due to very similar adaptations to the aquatic lifestyle and small simple flowers which are often not even formed. Especially the Halophila genus (Hydrocharitaceae) forms a complex group with an unresolved taxonomy due to overlapping morphological characters and high plasticity leading to many misidentifications. Hence, this led to the hypothesis that phylogenetic analysis on the molecular level may resolve taxonomic classification. The aim of this study is to identify and unambiguously characterize Halophila species collected in Viet Nam using tree- and character-based analysis of rbcL and matK sequences. Results obtained from molecular data and leaf morphology indicate that there are at least three species found in Viet Nam. Topologies based on single locus or combined datasets were similar but not equal. Analysis of thcL sequences showed lowest species resolution when only Halophila beccarii Aschers was resolved at the Halophila complex. matK shows better resolution with respect to H. beccarii and H. decipiens Ostenfeld. Combined rbcL and matK consensus trees showed the highest species resolution when all species form three distinct clades representative for three difference species including H. beccarii, H. decipiens, and H. ovalis (R. Br.) Hook. f. (C) 2013 Elsevier B.V. All rights reserved.
Author Address	[Nguyen Xuan Vy; Papenbrock, Jutta] Inst Bot, D-30419 Hannover, Germany; [Nguyen Xuan Vy] Vietnam Acad Sci & Technol, Inst Oceanog, Dept Marine Bot, Nha Trang City, Vietnam; [Bujang, Japar Sidik] Univ Putra Malaysia, Fac Agr & Food Sci, Bintulu 97008, Sarawak, Malaysia
Reprint Address	Papenbrock, J (reprint author), Leibniz Univ Hannover, Inst Bot, Herrenhauserstr 2, D-30419 Hannover, Germany.
E-mail Address	Jutta.Papenbrock@botanik.uni-hannover.de
ORCID Number	bujang, japar sidik/0000-0002-9797-7963
Funding Agency and Grant Number	Leibniz University Hannover and the Government of Viet Nam
Funding Text	We are deeply indebted to Christina Lucas, Cologne, Germany, for initial introduction into the phylogenetic analysis and Tjard Bergmann, University of Veterinary Medicine, Hannover, Germany, for help with the CAOS analysis. We also thank all staff at the Institute of Botany, Leibniz University Hannover, Germany, and at the Department of Marine Botany, Institute of Oceanography, Viet Nam, for kind support in the laboratory work and sample collection. This research was financially supported by the Leibniz University Hannover and the Government of Viet Nam.
Cited Reference Count	70
Times Cited	1
Total Times Cited Count (WoS, BCI, and CSCD)	1
Publisher	ELSEVIER SCIENCE BV
Publisher City	AMSTERDAM
Publisher Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN	0304-3770
29-Character Source Abbreviation	AQUAT BOT
ISO Source Abbreviation	Aquat. Bot.
Publication Date	OCT
Year Published	2013
Volume	110
Beginning Page	6
Ending Page	15
Digital Object Identifier (DOI)	10.1016/j.aquabot.2013.04.003
Page Count	10
Web of Science Category	Plant Sciences; Marine & Freshwater Biology
Subject Category	Plant Sciences; Marine & Freshwater Biology
Document Delivery Number	227OF
Unique Article Identifier	WOS:000325122500002
Plants associated with this reference	Halophila decipiens