10.5061/DRYAD.2TS6J
Hodač, Ladislav
University of Göttingen
Ulum, Fuad Bahrul
University of Göttingen
Opfermann, Nicole
University of Göttingen
Breidenbach, Natalie
University of Göttingen
Hojsgaard, Diego
University of Göttingen
Tjitrosoedirdjo, Sri Sudarmiyati
Bogor Agricultural University
Vornam, Barbara
University of Göttingen
Finkeldey, Reiner
University of Göttingen
Hörandl, Elvira
University of Göttingen
Data from: Population genetic structure and reproductive strategy of the
introduced grass Centotheca lappacea in tropical land-use systems in
Sumatra
Dryad
dataset
2017
land-use systems
Centotheca lappacea
2017-01-11T00:00:00Z
2017-01-11T00:00:00Z
en
https://doi.org/10.1371/journal.pone.0147633
222208 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Intensive transformation of lowland rainforest into oil palm and rubber
monocultures is the most common land-use practice in Sumatra (Indonesia),
accompanied by invasion of weeds. In the Jambi province, Centotheca
lappacea is one of the most abundant alien grass species in plantations
and in jungle rubber (an extensively used agroforest), but largely missing
in natural rainforests. Here, we investigated putative genetic
differentiation and signatures for adaptation in the introduced area. We
studied reproductive mode and ploidy level as putative factors for
invasiveness of the species. We sampled 19 populations in oil palm and
rubber monocultures and in jungle rubber in two regions (Bukit Duabelas
and Harapan). Amplified fragment length polymorphisms (AFLP) revealed a
high diversity of individual genotypes and only a weak differentiation
among populations (FST = 0.173) and between the two regions (FST = 0.065).
There was no significant genetic differentiation between the three
land-use systems. The metapopulation of C. lappacea consists of five
genetic partitions with high levels of admixture; all partitions appeared
in both regions, but with different proportions. Within the Bukit Duabelas
region we observed significant isolation-by-distance. Nine AFLP loci (5.3%
of all loci) were under natural diversifying selection. All studied
populations of C. lappacea were diploid, outcrossing and
self-incompatible, without any hints of apomixis. The estimated residence
time of c. 100 years coincides with the onset of rubber and oil palm
planting in Sumatra. In the colonization process, the species is already
in a phase of establishment, which may be enhanced by efficient selection
acting on a highly diverse gene pool. In the land-use systems, seed
dispersal might be enhanced by adhesive spikelets. At present, the
abundance of established populations in intensively managed land-use
systems might provide opportunities for rapid dispersal of C. lappacea
across rural landscapes in Sumatra, while the invasion potential in
rainforest ecosystems appears to be moderate as long as they remain
undisturbed.
AFLP matrix for Centotheca lappaceaHodac_etal_Centotheca_AFLP.xls
Jambi province
Sumatra
Indonesia