Genetic differentiation and phylogeography of partially sympatric species complex Rhizophora mucronata Lam. and R. stylosa Griff. using SSR markers

Background Mangrove forests are ecologically important but globally threatened intertidal plant communities. Effective mangrove conservation requires the determination of species identity, management units, and genetic structure. Here, we investigate the genetic distinctiveness and genetic structure...

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Main Authors: Salmo, Severino G, III, Wee, Alison K.S, Takayama, Koji, Chua, Jasher L, Asakawa, Takeshi, Meenakshisundaram, Sankararamasubramanian H, Onrizal, Onrizal, Adjie, Bayu, Ardli, Erwin Riyanto, Saengkaw, Sarawood, Malekal, Norhaslinda Binti, Tung, Nguyen Xuan, Yllano, Orlex Baylen, Saleh, Mohd Nazre, Soe, Khin Khin, Tateichi, Yoichi, Watano, Yasuyuki, Baba, Shigeyuki, Webb, Edward L, Kajita, Tadashi
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Published: Archīum Ateneo 2015
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Online Access:https://archium.ateneo.edu/es-faculty-pubs/11
https://archium.ateneo.edu/cgi/viewcontent.cgi?article=1010&context=es-faculty-pubs
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spelling ph-ateneo-arc.es-faculty-pubs-10102020-02-08T03:18:51Z Genetic differentiation and phylogeography of partially sympatric species complex Rhizophora mucronata Lam. and R. stylosa Griff. using SSR markers Salmo, Severino G, III Wee, Alison K.S Takayama, Koji Chua, Jasher L Asakawa, Takeshi Meenakshisundaram, Sankararamasubramanian H Onrizal, Onrizal Adjie, Bayu Ardli, Erwin Riyanto Saengkaw, Sarawood Malekal, Norhaslinda Binti Tung, Nguyen Xuan Yllano, Orlex Baylen Saleh, Mohd Nazre Soe, Khin Khin Tateichi, Yoichi Watano, Yasuyuki Baba, Shigeyuki Webb, Edward L Kajita, Tadashi Background Mangrove forests are ecologically important but globally threatened intertidal plant communities. Effective mangrove conservation requires the determination of species identity, management units, and genetic structure. Here, we investigate the genetic distinctiveness and genetic structure of an iconic but yet taxonomically confusing species complex Rhizophora mucronata and R. stylosa across their distributional range, by employing a suite of 20 informative nuclear SSR markers. Results Our results demonstrated the general genetic distinctiveness of R. mucronata and R. stylosa, and potential hybridization or introgression between them. We investigated the population genetics of each species without the putative hybrids, and found strong genetic structure between oceanic regions in both R. mucronata and R. stylosa. In R. mucronata, a strong divergence was detected between populations from the Indian Ocean region (Indian Ocean and Andaman Sea) and the Pacific Ocean region (Malacca Strait, South China Sea and Northwest Pacific Ocean). In R. stylosa, the genetic break was located more eastward, between populations from South and East China Sea and populations from the Southwest Pacific Ocean. The location of these genetic breaks coincided with the boundaries of oceanic currents, thus suggesting that oceanic circulation patterns might have acted as a cryptic barrier to gene flow. Conclusions Our findings have important implications on the conservation of mangroves, especially relating to replanting efforts and the definition of evolutionary significant units in Rhizophora species. We outlined the genetic structure and identified geographical areas that require further investigations for both R. mucronata and R. stylosa. These results serve as the foundation for the conservation genetics of R. mucronata and R. stylosa and highlighted the need to recognize the genetic distinctiveness of closely-related species, determine their respective genetic structure, and avoid artificially promoting hybridization in mangrove restoration programmes. 2015-01-01T08:00:00Z text application/pdf https://archium.ateneo.edu/es-faculty-pubs/11 https://archium.ateneo.edu/cgi/viewcontent.cgi?article=1010&context=es-faculty-pubs Environmental Science Faculty Publications Archīum Ateneo Biogeography Coastal plants Gene flow Genetic diversity Genetic structure Indo-West Pacific Mangrove Microsatellite Nuclear DNA Population genetics Environmental Sciences
institution Ateneo De Manila University
building Ateneo De Manila University Library
continent Asia
country Philippines
Philippines
content_provider Ateneo De Manila University Library
collection archium.Ateneo Institutional Repository
topic Biogeography
Coastal plants
Gene flow
Genetic diversity
Genetic structure
Indo-West Pacific
Mangrove
Microsatellite
Nuclear DNA
Population genetics
Environmental Sciences
spellingShingle Biogeography
Coastal plants
Gene flow
Genetic diversity
Genetic structure
Indo-West Pacific
Mangrove
Microsatellite
Nuclear DNA
Population genetics
Environmental Sciences
Salmo, Severino G, III
Wee, Alison K.S
Takayama, Koji
Chua, Jasher L
Asakawa, Takeshi
Meenakshisundaram, Sankararamasubramanian H
Onrizal, Onrizal
Adjie, Bayu
Ardli, Erwin Riyanto
Saengkaw, Sarawood
Malekal, Norhaslinda Binti
Tung, Nguyen Xuan
Yllano, Orlex Baylen
Saleh, Mohd Nazre
Soe, Khin Khin
Tateichi, Yoichi
Watano, Yasuyuki
Baba, Shigeyuki
Webb, Edward L
Kajita, Tadashi
Genetic differentiation and phylogeography of partially sympatric species complex Rhizophora mucronata Lam. and R. stylosa Griff. using SSR markers
description Background Mangrove forests are ecologically important but globally threatened intertidal plant communities. Effective mangrove conservation requires the determination of species identity, management units, and genetic structure. Here, we investigate the genetic distinctiveness and genetic structure of an iconic but yet taxonomically confusing species complex Rhizophora mucronata and R. stylosa across their distributional range, by employing a suite of 20 informative nuclear SSR markers. Results Our results demonstrated the general genetic distinctiveness of R. mucronata and R. stylosa, and potential hybridization or introgression between them. We investigated the population genetics of each species without the putative hybrids, and found strong genetic structure between oceanic regions in both R. mucronata and R. stylosa. In R. mucronata, a strong divergence was detected between populations from the Indian Ocean region (Indian Ocean and Andaman Sea) and the Pacific Ocean region (Malacca Strait, South China Sea and Northwest Pacific Ocean). In R. stylosa, the genetic break was located more eastward, between populations from South and East China Sea and populations from the Southwest Pacific Ocean. The location of these genetic breaks coincided with the boundaries of oceanic currents, thus suggesting that oceanic circulation patterns might have acted as a cryptic barrier to gene flow. Conclusions Our findings have important implications on the conservation of mangroves, especially relating to replanting efforts and the definition of evolutionary significant units in Rhizophora species. We outlined the genetic structure and identified geographical areas that require further investigations for both R. mucronata and R. stylosa. These results serve as the foundation for the conservation genetics of R. mucronata and R. stylosa and highlighted the need to recognize the genetic distinctiveness of closely-related species, determine their respective genetic structure, and avoid artificially promoting hybridization in mangrove restoration programmes.
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author Salmo, Severino G, III
Wee, Alison K.S
Takayama, Koji
Chua, Jasher L
Asakawa, Takeshi
Meenakshisundaram, Sankararamasubramanian H
Onrizal, Onrizal
Adjie, Bayu
Ardli, Erwin Riyanto
Saengkaw, Sarawood
Malekal, Norhaslinda Binti
Tung, Nguyen Xuan
Yllano, Orlex Baylen
Saleh, Mohd Nazre
Soe, Khin Khin
Tateichi, Yoichi
Watano, Yasuyuki
Baba, Shigeyuki
Webb, Edward L
Kajita, Tadashi
author_facet Salmo, Severino G, III
Wee, Alison K.S
Takayama, Koji
Chua, Jasher L
Asakawa, Takeshi
Meenakshisundaram, Sankararamasubramanian H
Onrizal, Onrizal
Adjie, Bayu
Ardli, Erwin Riyanto
Saengkaw, Sarawood
Malekal, Norhaslinda Binti
Tung, Nguyen Xuan
Yllano, Orlex Baylen
Saleh, Mohd Nazre
Soe, Khin Khin
Tateichi, Yoichi
Watano, Yasuyuki
Baba, Shigeyuki
Webb, Edward L
Kajita, Tadashi
author_sort Salmo, Severino G, III
title Genetic differentiation and phylogeography of partially sympatric species complex Rhizophora mucronata Lam. and R. stylosa Griff. using SSR markers
title_short Genetic differentiation and phylogeography of partially sympatric species complex Rhizophora mucronata Lam. and R. stylosa Griff. using SSR markers
title_full Genetic differentiation and phylogeography of partially sympatric species complex Rhizophora mucronata Lam. and R. stylosa Griff. using SSR markers
title_fullStr Genetic differentiation and phylogeography of partially sympatric species complex Rhizophora mucronata Lam. and R. stylosa Griff. using SSR markers
title_full_unstemmed Genetic differentiation and phylogeography of partially sympatric species complex Rhizophora mucronata Lam. and R. stylosa Griff. using SSR markers
title_sort genetic differentiation and phylogeography of partially sympatric species complex rhizophora mucronata lam. and r. stylosa griff. using ssr markers
publisher Archīum Ateneo
publishDate 2015
url https://archium.ateneo.edu/es-faculty-pubs/11
https://archium.ateneo.edu/cgi/viewcontent.cgi?article=1010&context=es-faculty-pubs
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