Differential genetic responses to the stress revealed the mutation-order adaptive divergence between two sympatric ginger species.

ABSTRACT:

Background

Divergent genetic responses to the same environmental pressures may lead sympatric ecological speciation possible. Such speciation process possibly explains rapid sympatric speciation of island species. Two island endemic ginger species Zingiber kawagoii and Z. shuanglongensis was suggested to be independently originated from inland ancestors, but their island endemism and similar morphologies and habitats lead another hypothesis of in situ ecological speciation. For understanding when and how these two species diverged, intraspecific variation was estimated from three chloroplast DNA fragments (cpDNA) and interspecific genome-wide SNPs and expression differences after saline treatment were examined by transcriptomic analyses.

Results

Extremely low intraspecific g

SUBMITTER: Huang BH 

PROVIDER: S-EPMC6150995 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature