Bruguiera hainesii, a critically endangered mangrove species, is a hybrid between B. cylindrica and B. gymnorhiza (Rhizophoraceae)

Bruguiera hainesii (Rhizophoraceae) is one of the two Critically Endangered mangrove species listed in the IUCN Red List of Threatened Species. Although the species is vulnerable to extinction, its genetic diversity and the evolutionary relationships with other Bruguiera species are not well underst...

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Main Authors: Salmo, Severino G, III, Ono, Junya, Yong, Jean W.H, Takayama, Koji, Saleh, Mohd Nazre, Wee, Alison K.S, Asakawa, Takeshi, Yllano, Orlex Baylen, Suleiman, Monica, Tung, Nguyen Xuan, Soe, Khin Khin, Meenakshisundaram, Sankararamasubramanian H, Watano, Yasuyuki, Webb, Edward L, Kajita, Tadashi
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Published: Archīum Ateneo 2016
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Online Access:https://archium.ateneo.edu/es-faculty-pubs/15
https://link.springer.com/article/10.1007/s10592-016-0849-y#enumeration
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spelling ph-ateneo-arc.es-faculty-pubs-10142020-02-10T01:30:26Z Bruguiera hainesii, a critically endangered mangrove species, is a hybrid between B. cylindrica and B. gymnorhiza (Rhizophoraceae) Salmo, Severino G, III Ono, Junya Yong, Jean W.H Takayama, Koji Saleh, Mohd Nazre Wee, Alison K.S Asakawa, Takeshi Yllano, Orlex Baylen Suleiman, Monica Tung, Nguyen Xuan Soe, Khin Khin Meenakshisundaram, Sankararamasubramanian H Watano, Yasuyuki Webb, Edward L Kajita, Tadashi Bruguiera hainesii (Rhizophoraceae) is one of the two Critically Endangered mangrove species listed in the IUCN Red List of Threatened Species. Although the species is vulnerable to extinction, its genetic diversity and the evolutionary relationships with other Bruguiera species are not well understood. Also, intermediate morphological characters imply that the species might be of hybrid origin. To clarify the genetic relationship between B. hainesii and other Bruguiera species, we conducted molecular analyses including all six Bruguiera species using DNA sequences of two nuclear genes (CesA and UNK) and three chloroplast regions (intergenic spacer regions of trnL-trnF, trnS-trnG and atpB-rbcL). For nuclear DNA markers, all nine B. hainesii samples from five populations were heterozygous at both loci, with one allele was shared with B. cylindrica, and the other with B. gymnorhiza. For chloroplast DNA markers, the two haplotypes found in B. hainesii were shared only by B. cylindrica. These results suggested that B. hainesii is a hybrid between B. cylindrica as the maternal parent and B. gymnorhiza as the paternal one. Furthermore, chloroplast DNA haplotypes found in B. hainesii suggest that hybridization has occurred independently in regions where the distribution ranges of the parental species meet. As the IUCN Red List of Threatened Species currently excludes hybrids (except for apomictic plant hybrids), the conservation status of B. hainesii should be reconsidered. 2016-01-01T08:00:00Z text https://archium.ateneo.edu/es-faculty-pubs/15 https://link.springer.com/article/10.1007/s10592-016-0849-y#enumeration Environmental Science Faculty Publications Archīum Ateneo Mangrove Hybridization Endangered species Genetics Environmental Sciences Natural Resources and Conservation
institution Ateneo De Manila University
building Ateneo De Manila University Library
country Philippines
collection archium.Ateneo Institutional Repository
topic Mangrove
Hybridization
Endangered species
Genetics
Environmental Sciences
Natural Resources and Conservation
spellingShingle Mangrove
Hybridization
Endangered species
Genetics
Environmental Sciences
Natural Resources and Conservation
Salmo, Severino G, III
Ono, Junya
Yong, Jean W.H
Takayama, Koji
Saleh, Mohd Nazre
Wee, Alison K.S
Asakawa, Takeshi
Yllano, Orlex Baylen
Suleiman, Monica
Tung, Nguyen Xuan
Soe, Khin Khin
Meenakshisundaram, Sankararamasubramanian H
Watano, Yasuyuki
Webb, Edward L
Kajita, Tadashi
Bruguiera hainesii, a critically endangered mangrove species, is a hybrid between B. cylindrica and B. gymnorhiza (Rhizophoraceae)
description Bruguiera hainesii (Rhizophoraceae) is one of the two Critically Endangered mangrove species listed in the IUCN Red List of Threatened Species. Although the species is vulnerable to extinction, its genetic diversity and the evolutionary relationships with other Bruguiera species are not well understood. Also, intermediate morphological characters imply that the species might be of hybrid origin. To clarify the genetic relationship between B. hainesii and other Bruguiera species, we conducted molecular analyses including all six Bruguiera species using DNA sequences of two nuclear genes (CesA and UNK) and three chloroplast regions (intergenic spacer regions of trnL-trnF, trnS-trnG and atpB-rbcL). For nuclear DNA markers, all nine B. hainesii samples from five populations were heterozygous at both loci, with one allele was shared with B. cylindrica, and the other with B. gymnorhiza. For chloroplast DNA markers, the two haplotypes found in B. hainesii were shared only by B. cylindrica. These results suggested that B. hainesii is a hybrid between B. cylindrica as the maternal parent and B. gymnorhiza as the paternal one. Furthermore, chloroplast DNA haplotypes found in B. hainesii suggest that hybridization has occurred independently in regions where the distribution ranges of the parental species meet. As the IUCN Red List of Threatened Species currently excludes hybrids (except for apomictic plant hybrids), the conservation status of B. hainesii should be reconsidered.
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author Salmo, Severino G, III
Ono, Junya
Yong, Jean W.H
Takayama, Koji
Saleh, Mohd Nazre
Wee, Alison K.S
Asakawa, Takeshi
Yllano, Orlex Baylen
Suleiman, Monica
Tung, Nguyen Xuan
Soe, Khin Khin
Meenakshisundaram, Sankararamasubramanian H
Watano, Yasuyuki
Webb, Edward L
Kajita, Tadashi
author_facet Salmo, Severino G, III
Ono, Junya
Yong, Jean W.H
Takayama, Koji
Saleh, Mohd Nazre
Wee, Alison K.S
Asakawa, Takeshi
Yllano, Orlex Baylen
Suleiman, Monica
Tung, Nguyen Xuan
Soe, Khin Khin
Meenakshisundaram, Sankararamasubramanian H
Watano, Yasuyuki
Webb, Edward L
Kajita, Tadashi
author_sort Salmo, Severino G, III
title Bruguiera hainesii, a critically endangered mangrove species, is a hybrid between B. cylindrica and B. gymnorhiza (Rhizophoraceae)
title_short Bruguiera hainesii, a critically endangered mangrove species, is a hybrid between B. cylindrica and B. gymnorhiza (Rhizophoraceae)
title_full Bruguiera hainesii, a critically endangered mangrove species, is a hybrid between B. cylindrica and B. gymnorhiza (Rhizophoraceae)
title_fullStr Bruguiera hainesii, a critically endangered mangrove species, is a hybrid between B. cylindrica and B. gymnorhiza (Rhizophoraceae)
title_full_unstemmed Bruguiera hainesii, a critically endangered mangrove species, is a hybrid between B. cylindrica and B. gymnorhiza (Rhizophoraceae)
title_sort bruguiera hainesii, a critically endangered mangrove species, is a hybrid between b. cylindrica and b. gymnorhiza (rhizophoraceae)
publisher Archīum Ateneo
publishDate 2016
url https://archium.ateneo.edu/es-faculty-pubs/15
https://link.springer.com/article/10.1007/s10592-016-0849-y#enumeration
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