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ANALYSIS OF PORPHYRA RBC L DEMONSTRATES MULTIPLE MIGRATIONS OCCURRED BETWEEN THE NORTH ATLANTIC AND NORTH PACIFIC.
Author(s) -
Teasdale B.W.,
Lindstrom S.C.,
Fredericq S.,
Neefus C.D.,
Mathieson A.C.,
Taylor H.,
West A.L.,
Mercado S.T.,
Piche N.,
Klein A.S.
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.1529-8817.1999.00001-194.x
Subject(s) - porphyra , biology , botany , phylogenetic tree , clade , algae , genetics , gene
The taxonomic and evolutionary relationships between Porphyra of the boreal North Pacific (NP) and North Atlantic (NA) are being examined using near full length sequences of rbc L and the rbc L rbc S spacer (∼1420 bp). Phylogenetic analysis openface> 20 recognized species produced clusters containing both NP and NA species: Porphyra carolinenesis (NA) and Porphyra perforata (NP); Porphyra. leucosticta (NA) and Porphyra fucicola (NP); Porphyra ‘ amplissima ’ (NA) and Porphyra cuneiformis (NP); Porphyra ‘ umbilicalis ’ (NA) and Porphyra mumfordii (NP). A cluster of NP species including Porphyra abbottae , Porphyra kurogii , Porphyra pseudolinearis , and Porphyra pseudolanceolata formed a sister clade to P. fucicola (NP), P. leucosticta (NA) and several cryptic NA taxa. These results demonstrate that a number of “independent” migrations occurred between the North Pacific and Northern Atlantic. Furthermore these results confirm the hypothesis, based on similarities in morphology, isozymes, and karyotype, of Lindstrom & Cole (1992), that several sibling species pairs exist for Porphyra of the boreal North Pacific (NP) and North Atlantic (NA).