TY - JOUR

T1 - Microsatellite-based analysis of the genetic diversity and population structure of the seagrass species Thalassia hemprichii from southern Viet Nam

AU - Nguyen, Xuan Vy

AU - Nguyen-Nhat, Nhu Thuy

AU - Nguyen, Xuan Thuy

AU - Dao, Viet Ha

AU - McDermid, Karla J.

AU - Papenbrock, Jutta

N1 - Funding Information: We are deeply indebted to all staff of the Department of Marine Botany, Institute of Oceanography (ION), Viet Nam, for their support, generously providing many valuable suggestions. We thank the VAST Key lab on Food and Environmental Safety (Central Viet Nam) for the ability to use their equipment. We would like to thank two anonymous reviewers for their suggestions, comments, and editing. We also thank to JSPS Core-to-Core Program CREPSUM JPJSCCB20200009. This paper is a contribution to celebrate the 100 years anniversary of the Institute of Oceanography, Viet Nam Academy of Science and Technology. This work was supported by Vietnam Academy of Science and Technology [grant number: VAST04.01/20–21 ]. Funding Information: We are deeply indebted to all staff of the Department of Marine Botany, Institute of Oceanography (ION), Viet Nam, for their support, generously providing many valuable suggestions. We thank the VAST Key lab on Food and Environmental Safety (Central Viet Nam) for the ability to use their equipment. We would like to thank two anonymous reviewers for their suggestions, comments, and editing. We also thank to JSPS Core-to-Core Program CREPSUM JPJSCCB20200009. This paper is a contribution to celebrate the 100 years anniversary of the Institute of Oceanography, Viet Nam Academy of Science and Technology. This work was supported by Vietnam Academy of Science and Technology [grant number: VAST04.01/20?21].

PY - 2022/4

Y1 - 2022/4

N2 - Climate change, habitat loss, nutrient pollution, and other anthropogenic impacts cause seagrass degradation globally. Like other seagrass species, Thalassia hemprichii is threatened by these factors. A better knowledge about genetic diversity within and among populations would support and guide prudent conservation strategies. In Viet Nam, T. hemprichii is found mainly in two habitats including hard substratum in the open sea and the soft, muddy sand substratum in lagoons. In this present study, 106 individuals of T. hemprichii collected from eight populations along the southern coast of Viet Nam were used to evaluate the genetic diversity and population structure via 10 loci of microsatellite markers. Based on the pairwise FST, relatively low genetic differentiation was detected among T. hemprichii populations. Statistically significant pairwise population genetic differentiation was found among almost all populations. Cluster, structure, and AMOVA analysis also showed that the eight populations were separated into two groups in agreement with the two different habitat types. Significant positive correlations exist between geographic and genetic distances. The genetic diversity exhibitd by three of the eight populations suggests that these three populations need protection priority.

AB - Climate change, habitat loss, nutrient pollution, and other anthropogenic impacts cause seagrass degradation globally. Like other seagrass species, Thalassia hemprichii is threatened by these factors. A better knowledge about genetic diversity within and among populations would support and guide prudent conservation strategies. In Viet Nam, T. hemprichii is found mainly in two habitats including hard substratum in the open sea and the soft, muddy sand substratum in lagoons. In this present study, 106 individuals of T. hemprichii collected from eight populations along the southern coast of Viet Nam were used to evaluate the genetic diversity and population structure via 10 loci of microsatellite markers. Based on the pairwise FST, relatively low genetic differentiation was detected among T. hemprichii populations. Statistically significant pairwise population genetic differentiation was found among almost all populations. Cluster, structure, and AMOVA analysis also showed that the eight populations were separated into two groups in agreement with the two different habitat types. Significant positive correlations exist between geographic and genetic distances. The genetic diversity exhibitd by three of the eight populations suggests that these three populations need protection priority.

KW - Conservation

KW - Gene flow

KW - Substratum

KW - Thalassia hemprichii

KW - Viet Nam

UR - http://www.scopus.com/inward/record.url?scp=85123883571&partnerID=8YFLogxK

U2 - 10.1016/j.aquabot.2022.103497

DO - 10.1016/j.aquabot.2022.103497

M3 - Article

AN - SCOPUS:85123883571

VL - 178

JO - Aquatic botany

JF - Aquatic botany

SN - 0304-3770

M1 - 103497

ER -