CRASSOSTREA-ANGULATA
; THERMAL TOLERANCE
; STRESS
; TEMPERATURE
; ADAPTATION
; DIVERGENCE
; PROTEINS
; PATTERNS
; FAMILY
; GIGAS
WOS学科分类:
Biology
; Ecology
; Evolutionary Biology
WOS研究方向:
Life Sciences & Biomedicine - Other Topics
; Environmental Sciences & Ecology
; Evolutionary Biology
英文摘要:
Organismal responses to environmental stresses are a determinant of the effect of climate change. These can occur through the regulation of gene expression, involving genetic adaptation and plastic changes as evolutionary strategy. Heat shock protein (hsp) family genes are extensively expanded and play important roles in thermal adaptation in oysters. We investigated expression of all heat-responsive hsps in two allopatric congeneric oyster species, Crassostrea gigas and C. angulata, which are respectively distributed along the northern and southern coasts of China, using common garden and reciprocal transplant experiments. Our results showed that hsps in C. gigas have evolved higher basal levels of expression under ambient conditions at each field site, with lower expression plasticity in response to heat stress in comparison to C. angulata, which exhibited lower baseline expression but higher expression plasticity. This pattern was fixed regardless of environmental disturbance, potentially implying genetic assimilation. Our findings indicate divergent adaptive strategies with underlying evolutionary trade-offs between genetic adaptation and plasticity at the molecular level in two oyster congeners in the face of rapid climate change.
1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Expt Marine Biol, Qingdao, Shandong, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao, Shandong, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Shandong, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China 5.Chinese Acad Sci, Ctr Ocean Mega Sci, Beijing, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Natl & Local Joint Engn Key Lab Ecol Mariculture, Qingdao, Shandong, Peoples R China
Recommended Citation:
Li, Ao,Li, Li,Wang, Wei,et al. Evolutionary trade-offs between baseline and plastic gene expression in two congeneric oyster species[J]. BIOLOGY LETTERS,2019-01-01,15(6)