Yuki Tomizawa and Yoshiaki Tsuda and Mohd Nazre Saleh and Alison K. S. Wee and Koji Takayama and Takashi Yamamoto and Orlex Baylen Yllano and Severino G. Salmo III and Sarawood Sungkaew and Bayu Adjie and Erwin Ardli and Monica Suleiman and Nguyen, Xuan Tung and Soe, Khin Khin and Kathiresan Kandasamy and Takeshi Asakawa and Yasuyuki Watano and Shigeyuki Baba and Tadashi Kajita (2017) Genetic structure and population demographic history of a widespread mangrove plant xylocarpus granatum J. Koenig across the Indo-West Pacific region. Forests, 8. pp. 1-18.
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Abstract
Xylocarpus granatum J. Koenig is one of the most widespread core component species of mangrove forests in the Indo-West Pacific (IWP) region, and as such is suitable for examining how genetic structure is generated across spatiotemporal scales. We evaluated the genetic structure of this species using maternally inherited chloroplast (cp) and bi-parentally inherited nuclear DNA markers, with samples collected across the species range. Both cp and nuclear DNA showed generally similar patterns, revealing three genetic groups in the Indian Ocean, South China Sea (with Palau), and Oceania, respectively. The genetic diversity of the Oceania group was significantly lower, and the level of population differentiation within the Oceania group was significantly higher, than in the South China Sea group. These results revealed that in addition to the Malay Peninsula—a common land barrier for mangroves—there is a genetic barrier in an oceanic region of the West Pacific that prevents gene flow among populations. Moreover, demographic inference suggested that these patterns were generated in relation to sea level changes during the last glacial period and the emergence of Sahul Shelf which lied northwest of Australia. We propose that the three genetic groups should be considered independent conservation units, and that the Oceania group has a higher conservation priority.
| Item Type: | Article |
|---|---|
| Keyword: | Demographic Inference, Genetic structure, Mangrove;,Seed Dispersal, Ocean current, Indo-west Pacific region, Xylocarpus |
| Subjects: | Q Science > QH Natural history > QH1-278.5 Natural history (General) S Agriculture > SD Forestry > SD1-669.5 Forestry |
| Department: | INSTITUTE > Institute for Tropical Biology and Conservation |
| Depositing User: | SITI AZIZAH BINTI IDRIS - |
| Date Deposited: | 31 Dec 2024 11:15 |
| Last Modified: | 31 Dec 2024 11:15 |
| URI: | https://eprints.ums.edu.my/id/eprint/42480 |
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