File
Authors
Keywords
dispersal
gene flow
ITS rDNA
marine Ascomycota
molecular ecology
NDC
Natural science
Abstract
The study of genetic variation in fungi has been poor since the development of the theoretical underpinnings of population genetics, specifically in marine taxa. Corollospora maritima sensu lato is an abundant cosmopolitan marine fungus, playing a crucial ecological role in the intertidal environment. We evaluated the extent and distribution of the genetic diversity in the nuclear ribosomal internal transcribed spacer region of 110 isolates of this ascomycete from 19 locations in the Gulf of Mexico, Caribbean Sea and Pacific Ocean. The diversity estimates demonstrated that C. maritima sensu lato possesses a high genetic diversity compared to other cosmopolitan fungi, with the highest levels of variability in the Caribbean Sea. Globally, we registered 28 haplotypes, out of which 11were specific to the Caribbean Sea, implying these populations are genetically unique. We detected populations inhabiting human-impacted sites with null genetic variation. As long-term exposure to contaminants has been proven to decrease genetic diversity, a conservation genetics approach to assess this matter is urgent. Our results revealed the occurrence of five genetic lineages with distinctive environmental preferences and an overlapping geographical distribution, agreeing with previous studies reporting physiological races within this species.
Publisher
Water de Gruyter
Content Type
Journal Article
Link
https://www.degruyter.com/view/j/botm.2016.59.issue-5/bot-2016-0058/bot-2016-0058
ISSN・ISBN
00068055
NCID
AA00572622
Journal Title
Botanica marina
Current Journal Title
Botanica marina
Volume
59
Issue
5
Start Page
307
End Page
320
Published Date
2016
DOI
Text Version
Publisher
Citation
Botanica marina. 2016, 59(5), 307-320
Department
Faculty of Agriculture/Graduate School of Agriculture
Language
English