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Mitochondrial DNA Variation Follows a Geographic Pattern in Japanese Beech Species
Author(s) -
Koike T.,
Kato S.,
Shimamoto Y.,
Kitamura K.,
Kawano S.,
Ueda K.,
Mikami T.
Publication year - 1998
Publication title -
botanica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.871
H-Index - 87
eISSN - 1438-8677
pISSN - 0932-8629
DOI - 10.1111/j.1438-8677.1998.tb00682.x
Subject(s) - beech , fagus crenata , mitochondrial dna , biology , japonica , phylogenetic tree , zoology , genetic diversity , range (aeronautics) , ecology , botany , evolutionary biology , genetics , population , demography , materials science , sociology , composite material , gene
The amount and distribution of mitochondrial (mt) DNA restriction fragment length polymorphism was determined among individual tree samples of two Japanese beech species, Fagus crenata and F.japonica . Individual plants were collected from 16 F. crenata populations throughout the range of the species, and from three F. japonica populations. We detected enough variation to characterize eleven and three chondriome types in F. crenata and F.japonica , respectively. The grouping of beech chondriome types based upon the cladistic analysis of mtDNA polymorphism allowed us to recognize the apparent geographical patterns of mtDIMA diversity: the resulting three main groups occupied distinct geographic areas. This geographic differentiation is likely to reflect the history of the Japanese beech forests after the last glacial period of the Pleistocene. In addition, the mtDNA polymorphism encountered within F. crenata encompassed all the variation observed in F.japonica . Our result suggests the need for re‐evaluation of their phylogenetic relationships.