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Authors Les, DH; Moody, ML; Jacobs, SWL; Bayer, RJ
Author Full Name Les, DH; Moody, ML; Jacobs, SWL; Bayer, RJ
Title Systematics of seagrasses (Zosteraceae) in Australia and New Zealand
Source SYSTEMATIC BOTANY
Language English
Document Type Article
Keywords Plus DEVELOPMENTAL MORPHOLOGY; REPRODUCTIVE STRUCTURES; CHROMOSOME-NUMBERS; NORTH-AMERICA; ANGIOSPERMS; EVOLUTION; ASCHERS; COAST; DNA
Abstract Previous taxonomic treatments of the family Zosteraceae in Australia/New Zealand hake recognized Heterozostera tasmanica (monotypic) and four Zostera species all belonging to subgenus Zosterella: Z capricorni, Z. muelleri, Z. mucronata, Z. novazelandica, Zostera has always been taxonomically problematic in Australia, where researchers, have expressed difficulty with species recognition due to vague or inconsistent morphological characters There also has been a lack of agreement on generic (notably the distinctness of Heterozostera) and subgeneric delimitation, Recent anatomical, developmental, and molecular studies urge a reevaluation of relationship, in the family, To clarify the taxonomy Of Zosteraceae, we investigated interspecific phylogenetic relationships focusing on Australian species, of subgenus Zosterella, We examined material comprising all genera of Zosteraceae (Heterozostera, Nanozostera, Phyllospadix, Zostera), six/seven species of Zostera subgenus Zosterella (including all Australian/New Zealand species), and one Of four species of Zostera subgenus Zostera. We conducted phylogenetic analyses of morphological data and DNA sequences from nuclear (ITS) and plastid (trnK intron, rbcL) genomes. Our results indicate two major clades (highly divergent at both morphological and molecular levels) and two subclades (with low morphological and molecular divergence) within Zosteraceae, Little morphological and molecular variation was observed among representatives within the clade of Australian/New, Zealand members Of subgenus Zosterella, and none provided cladistic support for taxa recognized formerly as separate species, We recommend that Zosteraceae comprise two genera (Phyllospadix, Zostera) with the latter subdivided into three subgenera (Zostera, Zosterella, Heterozostera). Furthermore, Australian/New Zealand representatives of Zostera subgenus Zosterella should be merged within a single species (Z. capricorni) to reflect the inability of morphological or molecular data to effectively. delimit additional species in this group.
Author Address Univ Connecticut, Dept Ecol & Evolutionary Biol, Storrs, CT 06269 USA; Royal Bot Gardens, Sydney, NSW 2000, Australia; Australian Natl Herbarium, CSIRO, Div Plant Ind, Canberra, ACT 2601, Australia
Reprint Address Les, DH (corresponding author), Univ Connecticut, Dept Ecol & Evolutionary Biol, Storrs, CT 06269 USA.
ResearcherID Number Bayer, Randall J/C-4478-2008; Moody, Michael/B-3443-2011; Moody, Michael/J-8997-2012
ORCID Number Moody, Michael/0000-0003-0327-267X
Times Cited 51
Total Times Cited Count (WoS, BCI, and CSCD) 59
Publisher AMER SOC PLANT TAXONOMISTS
Publisher City BRONX
Publisher Address NEW YORK BOTANICAL GARDEN, BRONX, NY 10458-5126 USA
ISSN 0363-6445
29-Character Source Abbreviation SYST BOT
ISO Source Abbreviation Syst. Bot.
Publication Date JUL-SEP
Year Published 2002
Volume 27
Issue 3
Beginning Page 468
Ending Page 484
Page Count 17
Web of Science Category Plant Sciences; Evolutionary Biology
Subject Category Plant Sciences; Evolutionary Biology
Document Delivery Number 594BR
Unique Article Identifier WOS:000178029300003
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