Abstract
Ternstroemia sylvatica inhabits several temperate and tropical montane forests in eastern Mexico. Its current discontinuous distribution results from both natural and anthropogenic fragmentation. We assessed the genetic diversity and population differentiation of T. sylvatica across its distribution range using 18 microsatellite markers. We sampled 366 individuals from 16 populations, analyzing genetic diversity (He) and population structure via STRUCTURE and Discriminant Analysis of Principal Components (DAPC). Our results revealed high genetic differentiation (FST = 0.21), with most genetic variation occurring within populations (79.50%). STRUCTURE analysis identified two major genetic clusters: a northern group, comprising the populations with the lowest genetic diversity, and a southern group with higher genetic diversity (He = 0.59-0.73) geographically structured into ten subgroups. Additionally, the results suggest historical fragmentation, limited gene flow among populations and inbreeding, as a heterozygote deficit is prevalent across populations. The high genetic diversity in specific populations indicates potential hybridization with other sympatric Ternstroemia species.
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Claims 8
Claim · model-written summary
Populations showed high genetic differentiation (FST = 0.21).
- Taxon
- Ternstroemia sylvatica
.jpg?width=60)
Ternstroemia sylvaticat0 - Outcome
- genetic differentiatione0
- Direction
- highe0
- Value
- FST = 0.21e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“high genetic differentiation (FST = 0.21)”
t0“Ternstroemia sylvatica”
Claim · model-written summary
Most genetic variation occurred within populations (79.50%).
- Taxon
- Ternstroemia sylvaticaTernstroemia sylvaticat0
- Outcome
- genetic variatione0
- Direction
- moste0
- Value
- 79.50%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“most genetic variation occurring within populations (79.50%)”
t0“Ternstroemia sylvatica”
Claim · model-written summary
STRUCTURE identified two major genetic clusters.
- Taxon
- Ternstroemia sylvaticaTernstroemia sylvaticat0
- Outcome
- two major genetic clusterse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“STRUCTURE analysis identified two major genetic clusters”
t0“Ternstroemia sylvatica”
Claim · model-written summary
The northern group had the lowest genetic diversity.
- Taxon
- Ternstroemia sylvaticaTernstroemia sylvaticat0
- Outcome
- genetic diversitye0
- Direction
- loweste0
- Setting
- northern groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a northern group, comprising the populations with the lowest genetic diversity”
t0“Ternstroemia sylvatica”
Claim · model-written summary
The southern group had higher genetic diversity (He = 0.59-0.73) and ten geographically structured subgroups.
- Taxon
- Ternstroemia sylvaticaTernstroemia sylvaticat0
- Outcome
- genetic diversitye0
- Direction
- highere0
- Value
- He = 0.59-0.73e0
- Qualifier
- ten subgroupse0
- Setting
- southern groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a southern group with higher genetic diversity (He = 0.59-0.73) geographically structured into ten subgroups”
t0“Ternstroemia sylvatica”
Claim · model-written summary
Results suggested historical fragmentation and limited gene flow among populations.
- Taxon
- Ternstroemia sylvaticaTernstroemia sylvaticat0
- Outcome
- historical fragmentation, limited gene flow among populationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“results suggest historical fragmentation, limited gene flow among populations”
t0“Ternstroemia sylvatica”
Claim · model-written summary
A prevalent heterozygote deficit suggested inbreeding.
- Taxon
- Ternstroemia sylvaticaTernstroemia sylvaticat0
- Outcome
- heterozygote deficite0
- Direction
- prevalente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inbreeding, as a heterozygote deficit is prevalent across populations”
t0“Ternstroemia sylvatica”
Claim · model-written summary
High diversity in specific populations indicated potential hybridization with sympatric Ternstroemia species.
- Taxon
- Ternstroemia sylvaticaTernstroemia sylvaticat0
- Interactor
- other sympatric Ternstroemia speciese0other
- Outcome
- potential hybridizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high genetic diversity in specific populations indicates potential hybridization with other sympatric Ternstroemia species”
t0“Ternstroemia sylvatica”