

FOLLOWUS
1.CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
2.Laboratory for Marine Ecology and Environmental Science, Laoshan Laboratory, Qingdao 266237, China
3.Jiaozhou Bay Marine Ecosystem Research Station, Chinese Academy of Sciences, Qingdao 266071, China
4.University of Chinese Academy of Sciences, Beijing 100049, China
ysun@qdio.ac.cn
收稿:2023-04-03,
网络首发:2023-05-15,
纸质出版:2024-03-01
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Genome-wide SNP markers provided insights into the reproductive strategy and genetic diversity of the green tide causative species
SUN Song,MA Weiwei,WANG Nan,et al.Genome-wide SNP markers provided insights into the reproductive strategy and genetic diversity of the green tide causative species Ulvaprolifera in China[J].Journal of Oceanology and Limnology,2024,42(02):533-543.
Genome-wide SNP markers provided insights into the reproductive strategy and genetic diversity of the green tide causative species
SUN Song,MA Weiwei,WANG Nan,et al.Genome-wide SNP markers provided insights into the reproductive strategy and genetic diversity of the green tide causative species Ulvaprolifera in China[J].Journal of Oceanology and Limnology,2024,42(02):533-543. DOI: 10.1007/s00343-023-3060-2.
Ulva
prolifera
is the causative species of the annually occurring large-scale green tides in China since 2007. Its specific biological features on reproductivity strategies
as well as intra-species genetic diversity
are still largely unknown
especially at the genome level
despite their importance in understanding the formation and outbreak of massive green tides. In the present study
the restriction site-associated DNA genotyping approach (2b-RAD) was adopted to identify the genome-wide single-nucleotide polymorphisms (SNPs) of 54 individual thalli including samples collected from Subei Shoal in 2019 and Qingdao coast from 2019 to 2021. SNPs genotype results revealed that most of the thalli in 2019 and 2020 were haploid gametophytes
while only half of the thalli were gametophytes in 2021
indicating flexibility in the reproductive strategies for the formation of the green tides among different years and the dominance of asexual and vegetative reproductive mode for the floating period. Besides
population analysis was conducted
and it revealed a very low genetic diversity among samples from Subei Shoal
and the Qingdao coast in the same year and a higher divergence among samples in different years. The results showed the efficiency of 2b-RAD in the exploration of SNPs in
U
.
prolifera
and provided the first genome-wide scale evidence for the origin of the large-scale green tides on the Qingdao coast. This study improved our understanding of the reproductive strategy and genetic diversity of the green tide causative species and will help further reveal the biological causes of the green tide in China.
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