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SYSTEMATICS OF ULVACEAE (ULVOPHYCEAE, CHLOROPHYTA) USING NUCLEAR AND CHLOROPLAST DNA SEQUENCES
Author(s) -
Hayden H.S.,
Waaland J.R.
Publication year - 2000
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1046/j.1529-8817.1999.00001-87.x
Subject(s) - biology , ulvophyceae , monophyly , phylogenetic tree , systematics , chlorophyta , taxon , molecular phylogenetics , chloroplast dna , botany , evolutionary biology , zoology , taxonomy (biology) , algae , clade , genetics , gene
Ulvaceae are morphologically simple, cosmopolitan green macroalgae. Family members, particularly species of Ulva and Enteromorpha , are prevalent in coastal ecosystems and responsible for “green tide” events around the world. Little is known about the evolutionary history of Ulvaceae. A lack of reliable, non‐molecular systematic characters has thwarted attempts to diagnose natural groupings within Ulva and Enteromorpha and among these and other putative Ulvaceae genera. Our study addresses several questions: 1) What are the phylogenetic relationships among genera commonly placed in Ulvaceae ( Chloropelta , Enteromorpha , Ulva , Ulvaria ); 2) Where do problematic genera such as Blidingia , Capsosiphon , Kornmannia , and Percursaria belong; and 3) What are the natural groupings of taxa within these genera? We address these questions using nuclear and chloroplast DNA sequences. Phylogenetic analyses support a monophyletic Ulvaceae consisting of Chloropelta , Enteromorpha , Percursaria , Ulva and Ulvaria. The systematic position of Blidingia , Capsosiphon and Kornmannia , and evolutionary relationships within selected genera will be discussed.