首页|Identification of genes under positive selection reveals evolutionary adaptation of Ulva mutabilis

Identification of genes under positive selection reveals evolutionary adaptation of Ulva mutabilis

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Ulvophytes are attractive model systems for understanding the evolution of growth, development, and environmental stress responses. They are untapped resources for food, fuel, and high-value compounds. The rapid and abundant growth of Ulva species makes them key contributors to coastal biogeochemical cycles, which can cause significant environmental problems in the form of green tides and biofouling. Until now, the Ulva mutabilis genome is the only Ulva genome to have been sequenced. To obtain further insights into the evolutionary forces driving divergence in Ulva species, we analyzed 3905 single copy ortholog family from U. mutabilis, Chlamydomonas reinhardtii and Volvox carteri to identify genes under positive selection (GUPS) in U. mutabilis. We detected 63 orthologs in U. mutabilis that were considered to be under positive selection. Functional analyses revealed that several adaptive modifications in photosynthesis, amino acid and protein synthesis, signal transduction and stress-related processes might explain why this alga has evolved the ability to grow very rapidly and cope with the variable coastal ecosystem environments.

green algaeUlva mutabilispositive selectionadaptive evolution

Jian Zhang、Xiaowen Zhang、Wentao Han、Xiao Fan、Yitao Wang、Dong Xu、Yan Zhang、Jian Ma、Chengwei Liang、Naihao Ye

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College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, China

Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China

Function Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China

National Key Research and Development Program of China under contract NoCentral Public-interest Scientific Institution Basal Research Fund,CAFS under contractCentral Public-interest Scientific Institution Basal Research Fund,CAFS under contractMajor Scientific and Technological Innovation Project of Shandong Provincial Key Research and Development Program under contNational Natural Science Foundation of China under contractNo.31770393Earmarked Fund for China Agriculture Research System under contract No.CARS-50;the Taishan Scholars Funding of Shandong Prov

2016YFC1402102Nos 2020TD192020TD272019JZZY020706

2020

海洋学报(英文版)
中国海洋学会

海洋学报(英文版)

CSTPCDCSCDSCI
影响因子：0.323
ISSN：0253-505X
年,卷(期)：2020.39(10)
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