Systematics of Vallisneria (Hydrocharitaceae)

被引:60
作者
Les, Donald H. [1 ]
Jacobs, Surrey W. L. [2 ]
Tippery, Nicholas P. [1 ]
Chen, Lei [3 ]
Moody, Michael L. [4 ]
Wilstermann-Hildebrand, Maike
机构
[1] Univ Connecticut, Dept Ecol & Evolutionary Biol, Storrs, CT 06269 USA
[2] Royal Bot Gardens, Sydney, NSW 2000, Australia
[3] Chinese Acad Sci, Wuhan Bot Garden, Wuhan 430074, Peoples R China
[4] Indiana Univ, Dept Biol, Bloomington, IN 47405 USA
关键词
Bayesian analysis; chloroplast DNA; Maidenia; Nechamandra; nuclear ribosomal DNA; phylogenetics;
D O I
10.1600/036364408783887483
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Morphology, species delimitation, and interspecific relationships were evaluated in a phylogenetic context in the aquatic monocotyledon genus Vallisneria using a combination of morphological and molecular (nrITS, rbcL, trnK5' intron) data. Contrary to previous studies that recognized few species worldwide, we distinguished 12 species by molecular data, and an additional 2-3 species by morphological differences within groups that were invariant at the molecular level. Two new Vallisneria species (V. australis, V. erecta) are formally described. Other potentially novel species were detected from the cultivated material examined but require further study to elucidate their taxonomic status. Phylogenetic analyses indicated that vittate (caulescent) species (including Maidenia rubra) are not basal, but nested between two groups of rosulate (rosette) species. To preserve Vallisneria as monophyletic, a new combination is made (V. rubra) that accommodates the transfer of M. rubra to Vallisneria. Several taxonomic characters associated with the stigma morphology of pistillate flowers were found to represent suites of features related to pollination. In most cases, these character suites corresponded to a particular arrangement of filaments in the staminate flowers. The precise geographical origin of Vallisneria remains difficult to determine. However, we conclusively documented the presence of the Old World V. spiralis in Texas (United States), which constitutes the first authentic record of this nonindigenous species in North America.
引用
收藏
页码:49 / 65
页数:17
相关论文
共 66 条
[1]  
[Anonymous], 2000, FLORA AUSTR SUPPLEME
[2]  
[Anonymous], 1994, AQUATIC PLANTS JAPAN
[3]   Dietary ecology of the Australian freshwater turtle (Elseya sp.:: Chelonia:Chelidae) in the Burnett River, Queensland [J].
Armstrong, G ;
Booth, DT .
WILDLIFE RESEARCH, 2005, 32 (04) :349-353
[4]  
Aston HI, 1973, AQUATIC PLANTS AUSTR
[5]  
Bailey FM, 1888, SYNOPSIS QUEENSLAND
[6]   Phylogenetic Utility of the Internal Transcribed Spacers of Nuclear Ribosomal DNA in Plants: An Example from the Compositae [J].
Baldwin, Bruce G. .
MOLECULAR PHYLOGENETICS AND EVOLUTION, 1992, 1 (01) :3-16
[7]   ESTIMATING FOOD-CONSUMPTION OF FREE-RANGING MANATEES IN FLORIDA [J].
BENGTSON, JL .
JOURNAL OF WILDLIFE MANAGEMENT, 1983, 47 (04) :1186-1192
[8]  
CHATIN A, 1855, MEMOIRE VALLISNERIA
[9]  
CHATIN A, 1855, B SOC BOT FRANCE, V2, P293
[10]  
Cook C.D.K., 1996, AQUATIC PLANT BOOK