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Chloroplast genetic diversity and biogeography in the serpentine endemic Ni‐hyperaccumulator Alyssum bertolonii
Author(s) -
Mengoni A.,
Gonnelli C.,
Brocchini E.,
Galardi F.,
Pucci S.,
Gabbrielli R.,
Bazzicalupo M.
Publication year - 2003
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1046/j.1469-8137.2003.00664.x
Subject(s) - biology , genetic diversity , analysis of molecular variance , disjunct , population , microsatellite , genetic variation , chloroplast , evolutionary biology , chloroplast dna , phylogeography , botany , genetic structure , ecology , genetics , phylogenetics , allele , gene , demography , sociology
Summary• Chloroplast microsatellites (cpSSR) were used to analyze the patterns of genetic variation within and among populations of the serpentine endemic, Alyssum bertolonii . • Thirty‐five different chloroplast haplotypes were identified in 90 plants sampled from nine populations originating from the four disjunct northern‐Italian serpentine regions where the species is found. • High levels of genetic diversity were found within each of the populations sampled. Analysis of Molecular Variance (AMOVA) showed high degrees of differentiation among both different populations of the same serpentine region and different regions (Φ ST= 0.622, ΦCT = 0.252, respectively). • The results indicated that: each population was established by few founders and then subsequently differentiated the existing chloroplast haplotypes; each population is a distinct genetic entity; and populations within the same serpentine region are more related than populations from different regions.