Pyropia yezoensis genome reveals diverse mechanisms of carbon acquisition in the intertidal environment

Dongmei Wang, Xinzi Yu, Kuipeng Xu, Guiqi Bi, Min Cao, Ehud Zelzion, Chunxiang Fu, Peipei Sun, Yang Liu, Fanna Kong, Guoying Du, Xianghai Tang, Ruijuan Yang, Junhao Wang, Lei Tang, Lu Wang, Yingjun Zhao, Yuan Ge, Yunyun Zhuang, Zhaolan MoYu Chen, Tian Gao, Xiaowei Guan, Rui Chen, Weihua Qu, Bin Sun, Debashish Bhattacharya, Yunxiang Mao

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56 Scopus citations


Changes in atmospheric CO2 concentration have played a central role in algal and plant adaptation and evolution. The commercially important red algal genus, Pyropia (Bangiales) appears to have responded to inorganic carbon (Ci) availability by evolving alternating heteromorphic generations that occupy distinct habitats. The leafy gametophyte inhabits the intertidal zone that undergoes frequent emersion, whereas the sporophyte conchocelis bores into mollusk shells. Here, we analyze a high-quality genome assembly of Pyropia yezoensis to elucidate the interplay between Ci availability and life cycle evolution. We find horizontal gene transfers from bacteria and expansion of gene families (e.g. carbonic anhydrase, anti-oxidative related genes), many of which show gametophyte-specific expression or significant up-regulation in gametophyte in response to dehydration. In conchocelis, the release of HCO3- from shell promoted by carbonic anhydrase provides a source of Ci. This hypothesis is supported by the incorporation of 13C isotope by conchocelis when co-cultured with 13C-labeled CaCO3.

Original languageEnglish (US)
Article number4028
JournalNature communications
Issue number1
StatePublished - Dec 1 2020

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Biochemistry, Genetics and Molecular Biology
  • General Physics and Astronomy


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