AI Article Synopsis
- - Ammopiptanthus, a desert legume genus, includes two endangered species, A. mongolicus and A. nanus, which were analyzed for genetic variability and differentiation.
- - Genetic analysis using ISSR markers revealed that the two species are genetically distinct, with A. mongolicus showing low diversity (Hpop = 0.106) and A. nanus even lower (Hpop = 0.070).
- - The research suggests the genetic differences arose from a historical vicariant event and recommends conservation strategies for both species.
Article Abstract
Background And Aims: The desert legume genus Ammopiptanthus comprises two currently endangered species, A. mongolicus and A. nanus. Genetic variability and genetic differentiation between the two species and within each species were examined.
Methods: Inter-simple sequence repeat (ISSR) marker data were obtained and analysed with respect to genetic diversity, structure and gene flow.
Key Results: Despite the morphological similarity between A. mongolicus and A. nanus, the two species are genetically distinct from each other, indicated by 63 % species-specific bands. Low genetic variability was detected for both population level (Shannon indices of diversity Hpop = 0.106, percentage of polymorphic loci P = 18.55 % for A. mongolicus; Hpop = 0.070, P = 12.24 % for A. nanus) and species level (Hsp = 0.1832, P = 39.39 % for A. mongolicus; Hsp = 0.1026, P = 25.89 % for A. nanus). Moderate genetic differentiation was found based on different measures (AMOVA PhiST and Hickory B) in both A. mongolicus (0.3743-0.3744) and A. nanus (0.2162-0.2369).
Conclusions: The significant genetic difference between the two species might be due to a possible vicariant evolutionary event from a single common ancestor through the fragmentation of their common ancestor's range. Conservation strategies for these two endangered species are proposed.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4246738 | PMC |
| http://dx.doi.org/10.1093/aob/mci089 | DOI Listing |
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