Quality-quantity trade-offs drive functional trait evolution in a model microalgal 'climate change winner'

被引：31

作者：

Lindberg, Rasmus T. ^{[1
]}

Collins, Sinead ^{[1
]}

机构：

[1] Univ Edinburgh, Inst Evolutionary Biol, Charlotte Auerbach Rd, Edinburgh EH9 3FL, Midlothian, Scotland

来源：

ECOLOGY LETTERS | 2020年 / 23卷 / 05期

关键词：

Carbon dioxide; carbon dioxide; Chlamydomonas; experimental evolution; photosynthesis; phytoplankton bloom; primary production; Prodigal Son; reactive oxygen; CHLAMYDOMONAS-REINHARDTII; ELEVATED CO2; GREEN-ALGA; GROWTH; PHYTOPLANKTON; RESPONSES; STRESS; COMMUNITIES; ADAPTATION; IMPACT;

D O I：

10.1111/ele.13478

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Phytoplankton are the unicellular photosynthetic microbes that form the base of aquatic ecosystems, and their responses to global change will impact everything from food web dynamics to global nutrient cycles. Some taxa respond to environmental change by increasing population growth rates in the short-term and are projected to increase in frequency over decades. To gain insight into how these projected 'climate change winners' evolve, we grew populations of microalgae in ameliorated environments for several hundred generations. Most populations evolved to allocate a smaller proportion of carbon to growth while increasing their ability to tolerate and metabolise reactive oxygen species (ROS). This trade-off drives the evolution of traits that underlie the ecological and biogeochemical roles of phytoplankton. This offers evolutionary and a metabolic frameworks for understanding trait evolution in projected 'climate change winners' and suggests that short-term population booms have the potential to be dampened or reversed when environmental amelioration persists.

引用

页码：780 / 790

页数：11

共 47 条

[1] FEA1, FEA2, and FRE1, encoding two homologous secreted proteins and a candidate ferrireductase, are expressed coordinately with FOX1 and FTR1 in iron-deficient Chlamydomonas reinhardtii [J].