Huan Li, Shi Mengmeng, Wang Xulei, Gu Wenhui, Zhang Baoyu, Liu Xuehua, Zhuo Jintao, Wang Guangce
Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
College of Life Sciences, Qingdao Agricultural University, Qingdao, China.
Mar Pollut Bull. 2023 Oct;195:115468. doi: 10.1016/j.marpolbul.2023.115468. Epub 2023 Sep 2.
Green tides in the Yellow Sea have occurred periodically since 2007, impacting the ecological environment and green algal communities along the coasts of Jiangsu and Shandong provinces in China. To investigate the morphological characteristics and genetic diversity of Ulva prolifera, we conducted surveys and comparative analyses of both its floating and attached forms along the coastal areas of Jiangsu and Shandong. The results revealed that the external morphology of the floating U. prolifera was multibranched. The attached U. prolifera displayed significant morphological variation among individuals. Based on the analysis of the amplified characteristic bands of the chloroplast gene, it was shown that both floating and attached U. prolifera could hybridize with Ulva linza. The genetic diversity of U. prolifera was studied using mitochondrial and chloroplast genome fragments. All floating U. prolifera and three strains of attached U. prolifera belonged to the same haplotype. The genetic diversity of floating U. prolifera was low, and there were some genetic differences with attached U. prolifera. The attached U. prolifera displayed a higher level of genetic diversity with abundant sites of variation and haplotypes.
自2007年以来，黄海绿潮周期性爆发，对中国江苏和山东沿海的生态环境及绿藻群落造成影响。为研究浒苔的形态特征和遗传多样性，我们对江苏和山东沿海地区的漂浮浒苔和附着浒苔进行了调查与比较分析。结果显示，漂浮浒苔的外部形态为多分支状。附着浒苔个体间表现出显著的形态变异。基于叶绿体基因扩增特征条带分析，表明漂浮浒苔和附着浒苔均能与肠浒苔杂交。利用线粒体和叶绿体基因组片段对浒苔的遗传多样性进行了研究。所有漂浮浒苔及三株附着浒苔属于同一单倍型。漂浮浒苔的遗传多样性较低，与附着浒苔存在一定遗传差异。附着浒苔表现出较高的遗传多样性，具有丰富的变异位点和单倍型。
