13 results on '"Sungkaew, Sarawood"'
Search Results
2. A new species of Dendrobium (Orchidaceae: Epidendroideae: Malaxideae) described from previously perplexing specimens of the Seidenfaden collection
- Author
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Phueakkhlai, Orporn, Suddee, Somran, Hodkinson, Trevor R., Sungkaew, Sarawood, Pedersen, Henrik Ærenlund, Phueakkhlai, Orporn, Suddee, Somran, Hodkinson, Trevor R., Sungkaew, Sarawood, and Pedersen, Henrik Ærenlund
- Published
- 2019
3. On scientific requirements for presentation of 'new records': the case of Dendrobium ruckeri (Orchidaceae)
- Author
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Rujichaipimon, Wirata, Pedersen, Henrik Ærenlund, Phueakkhlai, Orporn, Suddee, Somran, Sungkaew, Sarawood, Traiperm, Paweena, Rujichaipimon, Wirata, Pedersen, Henrik Ærenlund, Phueakkhlai, Orporn, Suddee, Somran, Sungkaew, Sarawood, and Traiperm, Paweena
- Published
- 2019
4. Dendrobium chrysocrepis (Orchidaceae), a new record for Thailand
- Author
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Phueakkhlai, Orporn, Suddee, Somran, Hodkinson, Trevor R., Pedersen, Henrik Æ., Srisom, Priwan, Sungkaew, Sarawood, Phueakkhlai, Orporn, Suddee, Somran, Hodkinson, Trevor R., Pedersen, Henrik Æ., Srisom, Priwan, and Sungkaew, Sarawood
- Abstract
In this paper we report the first confirmed find of Dendrobium chrysocrepis in Thailand. A morphological description, line drawing and colour plate are presented (all based on Thai material), and some background information on the globally rare species is provided.
- Published
- 2018
5. Vicariance and oceanic barriers drive contemporary genetic structure of widespread mangrove species Sonneratia alba J. Sm in the Indo-West Pacific
- Author
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Wee, Alison K. S., Xian, Jessica Hui Teo, Chua, Jasher L., Takayama, Koji, Asakawa, Takeshi, Meenakshisundaram, Sankararamasubramanian Halasya, Onrizal,, Adjie, Bayu, Ardli, Erwin Riyanto, Sungkaew, Sarawood, Suleiman, Monica, Nguyen, Xuan Tung, Salmo, Severino Garengo, Yllano, Orlex Baylen, Saleh, Mohd Nazre Bin, Khin, Khin Soe, Tateishi, Yoichi, Watano, Yasuyuki, Tsuda, Yoshiaki, Kajita, Tadashi, Webb, Edward Layman, Wee, Alison K. S., Xian, Jessica Hui Teo, Chua, Jasher L., Takayama, Koji, Asakawa, Takeshi, Meenakshisundaram, Sankararamasubramanian Halasya, Onrizal,, Adjie, Bayu, Ardli, Erwin Riyanto, Sungkaew, Sarawood, Suleiman, Monica, Nguyen, Xuan Tung, Salmo, Severino Garengo, Yllano, Orlex Baylen, Saleh, Mohd Nazre Bin, Khin, Khin Soe, Tateishi, Yoichi, Watano, Yasuyuki, Tsuda, Yoshiaki, Kajita, Tadashi, and Webb, Edward Layman
- Abstract
Patterns of genetic structure are essential for a comprehensive understanding of the evolution and biogeography of a species. Here, we investigated the genetic patterns of one of the most widespread and abundant mangrove species in the Indo-West Pacific, Sonneratia alba J. Sm., in order to gain insights into the ecological and evolutionary drivers of genetic structure in mangroves. We employed 11 nuclear microsatellite loci and two chloroplast regions to genotyped 25 S. alba 483 2 of 21 populations. Our objectives were to (1) assess the level of genetic diversity and its geographic distribution; and (2) determine the genetic structure of the populations. Our results revealed significant genetic differentiation among populations. We detected a major genetic break between Indo-Malesia and Australasia, and further population subdivision within each oceanic region in these two major clusters. The phylogeographic patterns indicated a strong influence of vicariance, oceanic barriers and geographic distance on genetic structure. In addition, we found low genetic diversity and high genetic drift at range edge. This study advances the scope of mangrove biogeography by demonstrating a unique scenario whereby a widespread species has limited dispersal and high genetic divergence among populations. , , , , , , , , ,
- Published
- 2017
6. Genetic structure and population demographic history of a widespread mangrove plant Xylocarpus granatum J. Koenig across the Indo-West Pacific region
- Author
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Tomizawa, Yuki, Tsuda, Yoshiaki, Saleh @ Japri, Mohd Nazre, Wee, Alison K. S., Takayama, Koji, Yamamoto, Takashi, Yllano, Orlex Baylen, Salmo III, Severino G., Sungkaew, Sarawood, Adjie, Bayu, Ardli, Erwin, Suleiman, Monica, Nguyen, Xuan Tung, Soe, Khin Khin, Kandasamy, Kathiresan, Asakawa, Takeshi, Watano, Yasuyuki, Baba, Shigeyuki, Kajita, Tadashi, Tomizawa, Yuki, Tsuda, Yoshiaki, Saleh @ Japri, Mohd Nazre, Wee, Alison K. S., Takayama, Koji, Yamamoto, Takashi, Yllano, Orlex Baylen, Salmo III, Severino G., Sungkaew, Sarawood, Adjie, Bayu, Ardli, Erwin, Suleiman, Monica, Nguyen, Xuan Tung, Soe, Khin Khin, Kandasamy, Kathiresan, Asakawa, Takeshi, Watano, Yasuyuki, Baba, Shigeyuki, and Kajita, Tadashi
- 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.
- Published
- 2017
7. Genetic structure and population demographic history of a widespread mangrove plant Xylocarpus granatum J. Koenig across the Indo-West Pacific region
- Author
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Tomizawa, Yuki, Tsuda, Yoshiaki, Saleh @ Japri, Mohd Nazre, Wee, Alison K. S., Takayama, Koji, Yamamoto, Takashi, Yllano, Orlex Baylen, Salmo III, Severino G., Sungkaew, Sarawood, Adjie, Bayu, Ardli, Erwin, Suleiman, Monica, Nguyen, Xuan Tung, Soe, Khin Khin, Kandasamy, Kathiresan, Asakawa, Takeshi, Watano, Yasuyuki, Baba, Shigeyuki, Kajita, Tadashi, Tomizawa, Yuki, Tsuda, Yoshiaki, Saleh @ Japri, Mohd Nazre, Wee, Alison K. S., Takayama, Koji, Yamamoto, Takashi, Yllano, Orlex Baylen, Salmo III, Severino G., Sungkaew, Sarawood, Adjie, Bayu, Ardli, Erwin, Suleiman, Monica, Nguyen, Xuan Tung, Soe, Khin Khin, Kandasamy, Kathiresan, Asakawa, Takeshi, Watano, Yasuyuki, Baba, Shigeyuki, and Kajita, Tadashi
- 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.
- Published
- 2017
8. Vicariance and oceanic barriers drive contemporary genetic structure of widespread mangrove species Sonneratia alba J. Sm in the Indo-West Pacific
- Author
-
Wee, Alison K. S., Xian, Jessica Hui Teo, Chua, Jasher L., Takayama, Koji, Asakawa, Takeshi, Meenakshisundaram, Sankararamasubramanian Halasya, Onrizal,, Adjie, Bayu, Ardli, Erwin Riyanto, Sungkaew, Sarawood, Suleiman, Monica, Nguyen, Xuan Tung, Salmo, Severino Garengo, Yllano, Orlex Baylen, Saleh, Mohd Nazre Bin, Khin, Khin Soe, Tateishi, Yoichi, Watano, Yasuyuki, Tsuda, Yoshiaki, Kajita, Tadashi, Webb, Edward Layman, Wee, Alison K. S., Xian, Jessica Hui Teo, Chua, Jasher L., Takayama, Koji, Asakawa, Takeshi, Meenakshisundaram, Sankararamasubramanian Halasya, Onrizal,, Adjie, Bayu, Ardli, Erwin Riyanto, Sungkaew, Sarawood, Suleiman, Monica, Nguyen, Xuan Tung, Salmo, Severino Garengo, Yllano, Orlex Baylen, Saleh, Mohd Nazre Bin, Khin, Khin Soe, Tateishi, Yoichi, Watano, Yasuyuki, Tsuda, Yoshiaki, Kajita, Tadashi, and Webb, Edward Layman
- Abstract
Patterns of genetic structure are essential for a comprehensive understanding of the evolution and biogeography of a species. Here, we investigated the genetic patterns of one of the most widespread and abundant mangrove species in the Indo-West Pacific, Sonneratia alba J. Sm., in order to gain insights into the ecological and evolutionary drivers of genetic structure in mangroves. We employed 11 nuclear microsatellite loci and two chloroplast regions to genotyped 25 S. alba 483 2 of 21 populations. Our objectives were to (1) assess the level of genetic diversity and its geographic distribution; and (2) determine the genetic structure of the populations. Our results revealed significant genetic differentiation among populations. We detected a major genetic break between Indo-Malesia and Australasia, and further population subdivision within each oceanic region in these two major clusters. The phylogeographic patterns indicated a strong influence of vicariance, oceanic barriers and geographic distance on genetic structure. In addition, we found low genetic diversity and high genetic drift at range edge. This study advances the scope of mangrove biogeography by demonstrating a unique scenario whereby a widespread species has limited dispersal and high genetic divergence among populations. , , , , , , , , ,
- Published
- 2017
9. Palaeotropical intercontinental disjunctions revisited using a dated phylogenetic hypothesis with nearly complete species level sampling of Ficus subsect. Urostigma (Moraceae)
- Author
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Chantarasuwan, Bhanumas, Rønsted, Nina, Kjellberg, Finn, Sungkaew, Sarawood, van Welzen, Peter C., Chantarasuwan, Bhanumas, Rønsted, Nina, Kjellberg, Finn, Sungkaew, Sarawood, and van Welzen, Peter C.
- Published
- 2016
10. Oceanic currents, not land masses, maintain the genetic structure of the mangrove Rhizophora mucronata Lam. (Rhizophoraceae) in Southeast Asia
- Author
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Wee, Alison K. S., Takayama, Koji, Asakawa, Takeshi, Thompson, Bijoy, Onrizal, Sungkaew, Sarawood, Tung, Nguyen Xuan, Salleh@Japri, Mohd Nazre, Soe, Khin Khin, Tan, Hugh T. W., Watano, Yasuyuki, Baba, Shigeyuki, Kajita, Tadashi, Webb, Edward L., Wee, Alison K. S., Takayama, Koji, Asakawa, Takeshi, Thompson, Bijoy, Onrizal, Sungkaew, Sarawood, Tung, Nguyen Xuan, Salleh@Japri, Mohd Nazre, Soe, Khin Khin, Tan, Hugh T. W., Watano, Yasuyuki, Baba, Shigeyuki, Kajita, Tadashi, and Webb, Edward L.
- Abstract
Aim Mangroves are intertidal plants with sea-dispersed propagules, hence their population structure can offer valuable insights into the biogeographical processes driving population subdivision in coastal species. In this study, we used molecular markers and ocean circulation simulations to examine the effects of ocean currents and land masses on the genetic structure of the major mangrove species Rhizophora mucronata. Location Southeast Asia. Methods We assessed the genetic structure of 13 R. mucronata populations from continental Southeast Asia and Sumatra using 10 microsatellite loci. We first examined the relative effects of geographical distance and land mass (the Malay Peninsula) in shaping the genetic structure of R. mucronata in Southeast Asia. We then characterized the genetic structure of R. mucronata and compared it to the simulated ocean circulation patterns within our study region. Results Despite the low genetic diversity, significant genetic structuring was detected across R. mucronata populations. Contrary to observations on other mangrove species, genetic differentiation in R. mucronata was not found across the coasts of the Malay Peninsula, nor was it correlated with geographical distance. Instead, the most distinct genetic discontinuity was found at the boundary between the Andaman Sea and the Malacca Strait, and this can be explained by the prevailing ocean currents in this region. Main conclusions Our study presents novel evidence that the genetic structure of R. mucronata is maintained by ocean current-facilitated propagule dispersal.
- Published
- 2014
11. Oceanic currents, not land masses, maintain the genetic structure of the mangrove Rhizophora mucronata Lam. (Rhizophoraceae) in Southeast Asia
- Author
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Wee, Alison K. S., Takayama, Koji, Asakawa, Takeshi, Thompson, Bijoy, Onrizal, Sungkaew, Sarawood, Tung, Nguyen Xuan, Salleh@Japri, Mohd Nazre, Soe, Khin Khin, Tan, Hugh T. W., Watano, Yasuyuki, Baba, Shigeyuki, Kajita, Tadashi, Webb, Edward L., Wee, Alison K. S., Takayama, Koji, Asakawa, Takeshi, Thompson, Bijoy, Onrizal, Sungkaew, Sarawood, Tung, Nguyen Xuan, Salleh@Japri, Mohd Nazre, Soe, Khin Khin, Tan, Hugh T. W., Watano, Yasuyuki, Baba, Shigeyuki, Kajita, Tadashi, and Webb, Edward L.
- Abstract
Aim Mangroves are intertidal plants with sea-dispersed propagules, hence their population structure can offer valuable insights into the biogeographical processes driving population subdivision in coastal species. In this study, we used molecular markers and ocean circulation simulations to examine the effects of ocean currents and land masses on the genetic structure of the major mangrove species Rhizophora mucronata. Location Southeast Asia. Methods We assessed the genetic structure of 13 R. mucronata populations from continental Southeast Asia and Sumatra using 10 microsatellite loci. We first examined the relative effects of geographical distance and land mass (the Malay Peninsula) in shaping the genetic structure of R. mucronata in Southeast Asia. We then characterized the genetic structure of R. mucronata and compared it to the simulated ocean circulation patterns within our study region. Results Despite the low genetic diversity, significant genetic structuring was detected across R. mucronata populations. Contrary to observations on other mangrove species, genetic differentiation in R. mucronata was not found across the coasts of the Malay Peninsula, nor was it correlated with geographical distance. Instead, the most distinct genetic discontinuity was found at the boundary between the Andaman Sea and the Malacca Strait, and this can be explained by the prevailing ocean currents in this region. Main conclusions Our study presents novel evidence that the genetic structure of R. mucronata is maintained by ocean current-facilitated propagule dispersal.
- Published
- 2014
12. Development of 11 polymorphic microsatellite markers for Xylocarpus granatum (Meliaceae) using next-generation sequencing technology
- Author
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Tomizawa, Yuki, Shinmura, Yoshimi, Wee, Alison K. S., Takayama, Koji, Asakawa, Takeshi, Yllano, Orlex Baylen, Salmo III, Severino Garengo, Ardli, Erwin Riyanto, Tung, Nguyen Xuan, Malekal, Norhaslinda, Onrizal, Meenakshisundaram, Sankararamasubramanian Halasya, Sungkaew, Sarawood, Saleh @ Japri, Mohd Nazre, Adjie, Bayu, Soe, Khin Khin, Oguri, Emiko, Murakami, Noriaki, Watano, Yasuyuki, Baba, Shigeyuki, Webb, Edward L., Kajita, Tadashi, Tomizawa, Yuki, Shinmura, Yoshimi, Wee, Alison K. S., Takayama, Koji, Asakawa, Takeshi, Yllano, Orlex Baylen, Salmo III, Severino Garengo, Ardli, Erwin Riyanto, Tung, Nguyen Xuan, Malekal, Norhaslinda, Onrizal, Meenakshisundaram, Sankararamasubramanian Halasya, Sungkaew, Sarawood, Saleh @ Japri, Mohd Nazre, Adjie, Bayu, Soe, Khin Khin, Oguri, Emiko, Murakami, Noriaki, Watano, Yasuyuki, Baba, Shigeyuki, Webb, Edward L., and Kajita, Tadashi
- Abstract
Human impacts have seriously damaged mangroves, and conservation of mangroves will require information on local and regional population genetic structures. Here, we report the development and polymorphism of eleven novel microsatellite markers, developed using next-generation sequencing on 56 samples of widespread mangrove species Xylocarpus granatum (Meliaceae) from nine populations across the Indo-West Pacific region. All loci were found to be polymorphic, with the number of alleles per locus ranging from four to 19. In a population from Sabah (Malaysia), the mean observed and expected heterozygosity per locus was 0.59 and 0.58, respectively. No null allele, significant linkage disequilibrium or deviation from Hardy–Weinberg equilibrium was detected among all loci. The eleven markers developed can be valuable tools to conservation genetics of this species across its distributional range.
- Published
- 2013
13. Development of 11 polymorphic microsatellite markers for Xylocarpus granatum (Meliaceae) using next-generation sequencing technology
- Author
-
Tomizawa, Yuki, Shinmura, Yoshimi, Wee, Alison K. S., Takayama, Koji, Asakawa, Takeshi, Yllano, Orlex Baylen, Salmo III, Severino Garengo, Ardli, Erwin Riyanto, Tung, Nguyen Xuan, Malekal, Norhaslinda, Onrizal, Meenakshisundaram, Sankararamasubramanian Halasya, Sungkaew, Sarawood, Saleh @ Japri, Mohd Nazre, Adjie, Bayu, Soe, Khin Khin, Oguri, Emiko, Murakami, Noriaki, Watano, Yasuyuki, Baba, Shigeyuki, Webb, Edward L., Kajita, Tadashi, Tomizawa, Yuki, Shinmura, Yoshimi, Wee, Alison K. S., Takayama, Koji, Asakawa, Takeshi, Yllano, Orlex Baylen, Salmo III, Severino Garengo, Ardli, Erwin Riyanto, Tung, Nguyen Xuan, Malekal, Norhaslinda, Onrizal, Meenakshisundaram, Sankararamasubramanian Halasya, Sungkaew, Sarawood, Saleh @ Japri, Mohd Nazre, Adjie, Bayu, Soe, Khin Khin, Oguri, Emiko, Murakami, Noriaki, Watano, Yasuyuki, Baba, Shigeyuki, Webb, Edward L., and Kajita, Tadashi
- Abstract
Human impacts have seriously damaged mangroves, and conservation of mangroves will require information on local and regional population genetic structures. Here, we report the development and polymorphism of eleven novel microsatellite markers, developed using next-generation sequencing on 56 samples of widespread mangrove species Xylocarpus granatum (Meliaceae) from nine populations across the Indo-West Pacific region. All loci were found to be polymorphic, with the number of alleles per locus ranging from four to 19. In a population from Sabah (Malaysia), the mean observed and expected heterozygosity per locus was 0.59 and 0.58, respectively. No null allele, significant linkage disequilibrium or deviation from Hardy–Weinberg equilibrium was detected among all loci. The eleven markers developed can be valuable tools to conservation genetics of this species across its distributional range.
- Published
- 2013
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