Pubblicazione scientifica

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

FILONE TECNOLOGICO	TEMA
economia circolare e sostenibilità

RIASSUNTO

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.

DATA

Data di pubblicazione: 12/08/2020

AUTORI

WANG DONGMEI
YU XINZI
XU KUIPENG
BI GUIQI
CAO MIN
ZELZION EHUD
FU CHUNXIANG
SUN PEIPEI
LIU YANG
KONG FANNA
DU GUOYING
TANG XIANGHAI
YANG RUIJUAN
WANG JUNHAO
TANG LEI
WANG LU
ZHAO YINGJUN
GE YUAN
ZHUANG YUNYUN
MO ZHAOLAN
CHEN YU
GAO TIAN
GUAN XIAOWEI
CHEN RUI
QU WEIHUA
SUN BIN
BHATTACHARYA DEBASHISH
MAO YUNXIANG

RIVISTA

Nature Communications, 11, 4028

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