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Genetic variation in Lumnitzera racemosa, a mangrove species from the Indo-West Pacific
Su, G.-H.; Huang, Y.-L.; Tan, F.-X.; Ni, X.-W.; Tang, T.; Shi, S.-H. (2006). Genetic variation in Lumnitzera racemosa, a mangrove species from the Indo-West Pacific. Aquat. Bot. 84(4): 341-346. https://dx.doi.org/10.1016/j.aquabot.2006.01.001
In: Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam. ISSN 0304-3770; e-ISSN 1879-1522
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| Trefwoorden |
Cell constituents > Chromosomes > Genes
Disciplines > Biology > Genetics > Population genetics > Gene flow
Genomes
I, Indo-Pacific
Isolating mechanisms > Geographical isolation
Population characteristics > Population structure
Lumnitzera racemosa Willd. [WoRMS]
Indo-Pacifisch [Marine Regions]
Marien/Kust |
| Author keywords |
genetic variation; population genetic structure; geographical isolation;gene flow; ISSR |
| Auteurs | | Top |
- Su, G.-H.
- Huang, Y.-L.
- Tan, F.-X.
|
- Ni, X.-W.
- Tang, T.
- Shi, S.-H.
|
|
| Abstract |
The genetic structure of 18 populations of Lumnitzera racemosa from the Indo-West Pacific, including South China, Malay Peninsula, Sri Lanka, and North Australia, was assessed by inter simple sequence repeat (ISSR) markers. Our results showed a relatively high level of genetic variation at the species level (P = 87.04%, He = 0.260). The value of Gst was 0.642, suggesting significant genetic differentiation among populations. At the population level, however, genetic diversity was low (P = 32.17%, He = 0.097). When populations were grouped according to geographic regions, i.e., South China Sea, the East Indian Ocean, and North Australia, it was inferred from AMOVA that more than half the total variation (55.37%) was accounted for by differentiation between regions. A UPGMA dendrogram based on genetic distance also revealed a deep split between populations from these regions, indicating that Malay Peninsula and the Indonesia archipelago may play an important part on the genetic differentiation in L. racemosa. The high degree of population differentiation between regions and low genetic variation within populations recorded here highlights the need for appropriate conservation measures for this species, both in terms of incorporating further populations into protected areas, and the restoration strategies for separate regions. |
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