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Rapid divergence of ecotypes of an invasive plant.

Ray A, Ray R - AoB Plants (2014)

Bottom Line: We found multiple genetic clusters that were non-randomly distributed across space.In addition, we obtained evidence of inhibitory effects of selection on gene flow, i.e. isolation by environmental distance.Based on a non-random distribution of clusters, unequal gene flow among them and different bioclimatic niche requirements, we concluded that the emergence of ecotypes represented by two genetic clusters is underway.

View Article: PubMed Central - PubMed

Affiliation: National Centre for Biological Sciences, Tata Institute of Fundamental Research, GKVK Campus, Bellary Road, Bangalore 560065, India Present address: Ashoka Trust for Research in Ecology and the Environment (ATREE), Royal Enclave, Sriramapura, Jakkur Post, Bangalore 560064, India, and Center for Interdisciplinary Studies (CIS), Basudha, Kolkata 700078, India avik.ray.kol@gmail.com avik.ray@atree.org.

No MeSH data available.


Distribution of clusters across India. Pie charts show percentage frequency of each cluster, and are proportional to the sample size at the corresponding sites. For better representation, some sites are combined with the nearest sites due to dearth of samples (less than five individuals). Clusters 1 and 2 are shown in black and grey colour, respectively.
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PLU052F4: Distribution of clusters across India. Pie charts show percentage frequency of each cluster, and are proportional to the sample size at the corresponding sites. For better representation, some sites are combined with the nearest sites due to dearth of samples (less than five individuals). Clusters 1 and 2 are shown in black and grey colour, respectively.

Mentions: Although Cluster 1 is almost relatively evenly distributed, it is present at higher densities towards the southern part of the range. The uneven distribution of Cluster 2 is very conspicuous; it is present in high frequencies in the northern region followed by the eastern, and is virtually absent from the southern area (Fig. 4).Figure 4.


Rapid divergence of ecotypes of an invasive plant.

Ray A, Ray R - AoB Plants (2014)

Distribution of clusters across India. Pie charts show percentage frequency of each cluster, and are proportional to the sample size at the corresponding sites. For better representation, some sites are combined with the nearest sites due to dearth of samples (less than five individuals). Clusters 1 and 2 are shown in black and grey colour, respectively.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4215188&req=5

PLU052F4: Distribution of clusters across India. Pie charts show percentage frequency of each cluster, and are proportional to the sample size at the corresponding sites. For better representation, some sites are combined with the nearest sites due to dearth of samples (less than five individuals). Clusters 1 and 2 are shown in black and grey colour, respectively.
Mentions: Although Cluster 1 is almost relatively evenly distributed, it is present at higher densities towards the southern part of the range. The uneven distribution of Cluster 2 is very conspicuous; it is present in high frequencies in the northern region followed by the eastern, and is virtually absent from the southern area (Fig. 4).Figure 4.

Bottom Line: We found multiple genetic clusters that were non-randomly distributed across space.In addition, we obtained evidence of inhibitory effects of selection on gene flow, i.e. isolation by environmental distance.Based on a non-random distribution of clusters, unequal gene flow among them and different bioclimatic niche requirements, we concluded that the emergence of ecotypes represented by two genetic clusters is underway.

View Article: PubMed Central - PubMed

Affiliation: National Centre for Biological Sciences, Tata Institute of Fundamental Research, GKVK Campus, Bellary Road, Bangalore 560065, India Present address: Ashoka Trust for Research in Ecology and the Environment (ATREE), Royal Enclave, Sriramapura, Jakkur Post, Bangalore 560064, India, and Center for Interdisciplinary Studies (CIS), Basudha, Kolkata 700078, India avik.ray.kol@gmail.com avik.ray@atree.org.

No MeSH data available.