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The role of zinc in the adaptive evolution of polar phytoplankton

文献类型： 外文期刊

作者： Ye, Naihao 1 ; Han, Wentao 1 ; Toseland, Andrew 3 ; Wang, Yitao 1 ; Fan, Xiao 1 ; Xu, Dong 1 ; van Oosterhout, Cock 3 ; Grigoriev, Igor, V 4 ; Tagliabue, Alessandro 6 ; Zhang, Jian 1 ; Zhang, Yan 1 ; Ma, Jian 1 ; Qiu, Huan 7 ; Li, Youxun 8 ; Zhang, Xiaowen 1 ; Mock, Thomas 3 ;

作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao, Peoples R China

2.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Fisheries Sci & Food Prod Proc, Qingdao, Peoples R China

3.Univ East Anglia, Sch Environm Sci, Norwich, Norfolk, England

4.US DOE, Joint Genome Inst, Berkeley, CA USA

5.Univ Calif Berkeley, Dept Plant & Mol Biol, Berkeley, CA 94720 USA

6.Univ Liverpool, Sch Environm Sci, Liverpool, Merseyside, England

7.US DOE, Lawrence Berkeley Natl Lab, Joint Genome Inst, Berkeley, CA USA

8.Marine Sci Res Inst Shandong Prov, Qingdao, Peoples R China

期刊名称：NATURE ECOLOGY & EVOLUTION （ 影响因子：19.1； 五年影响因子：18.622 ）

ISSN： 2397-334X

年卷期： 2022 年 6 卷 7 期

页码：

收录情况： SCI

摘要： Zinc is an essential trace metal for oceanic primary producers with the highest concentrations in polar oceans. However, its role in the biological functioning and adaptive evolution of polar phytoplankton remains enigmatic. Here, we have applied a combination of evolutionary genomics, quantitative proteomics, co-expression analyses and cellular physiology to suggest that model polar phytoplankton species have a higher demand for zinc because of elevated cellular levels of zinc-binding proteins. We propose that adaptive expansion of regulatory zinc-finger protein families, co-expanded and co-expressed zinc-binding proteins families involved in photosynthesis and growth in these microalgal species and their natural communities were identified to be responsible for the higher zinc demand. The expression of their encoding genes in eukaryotic phytoplankton metatranscriptomes from pole-to-pole was identified to correlate not only with dissolved zinc concentrations in the upper ocean but also with temperature, suggesting that environmental conditions of polar oceans are responsible for an increased demand of zinc. These results suggest that zinc plays an important role in supporting photosynthetic growth in eukaryotic polar phytoplankton and that this has been critical for algal colonization of low-temperature polar oceans. Polar microalgae have high zinc demand. Here, the authors use quantitative proteomics and transcriptomics of polar and non-polar model algae combined with cellular physiology to show that zinc plays an important role in supporting photosynthetic growth in eukaryotic polar phytoplankton.

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