globalchange  > 过去全球变化的重建
DOI: 10.1104/pp.18.01448
WOS记录号: WOS:000466860800036
论文题名:
Evolution of Cold Acclimation and Its Role in Niche Transition in the Temperate Grass Subfamily Pooideae
作者: Schubert, Marian1; Gronvold, Lars2; Sandve, Simen R.3; Hvidsten, Torgeir R.2,4; Fjellheim, Siri1
通讯作者: Fjellheim, Siri
刊名: PLANT PHYSIOLOGY
ISSN: 0032-0889
EISSN: 1532-2548
出版年: 2019
卷: 180, 期:1, 页码:404-419
语种: 英语
WOS关键词: MULTIPLE SEQUENCE ALIGNMENT ; RNA-SEQ DATA ; FROST-TOLERANCE ; FREEZING TOLERANCE ; GENE FAMILY ; BRACHYPODIUM-DISTACHYON ; STRESS-RESPONSE ; CBF GENES ; FRUCTOSYLTRANSFERASE GENES ; LATITUDINAL GRADIENT
WOS学科分类: Plant Sciences
WOS研究方向: Plant Sciences
英文摘要:

The grass subfamily Pooideae dominates the grass floras in cold temperate regions and has evolved complex physiological adaptations to cope with extreme environmental conditions like frost, winter, and seasonality. One such adaptation is cold acclimation, wherein plants increase their frost tolerance in response to gradually falling temperatures and shorter days in the autumn. However, understanding how complex traits like cold acclimation evolve remains a major challenge in evolutionary biology. Here, we investigated the evolution of cold acclimation in Pooideae and found that a phylogenetically diverse set of Pooideae species displayed cold acclimation capacity. However, comparing differential gene expression after cold treatment in transcriptomes of five phylogenetically diverse species revealed widespread species-specific responses of genes with conserved sequences. Furthermore, we studied the correlation between gene family size and number of cold-responsive genes as well as between selection pressure on coding sequences of genes and their cold responsiveness. We saw evidence of protein-coding and regulatory sequence evolution as well as the origin of novel genes and functions contributing toward evolution of a cold response in Pooideae. Our results reflect that selection pressure resulting from global cooling must have acted on already diverged lineages. Nevertheless, conservation of cold-induced gene expression of certain genes indicates that the Pooideae ancestor may have possessed some molecular machinery to mitigate cold stress. Evolution of adaptations to seasonally cold climates is regarded as particularly difficult. How Pooideae evolved to transition from tropical to temperate biomes sheds light on how complex traits evolve in the light of climate changes.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/137075
Appears in Collections:过去全球变化的重建

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作者单位: 1.Norwegian Univ Life Sci, Dept Plant Sci, NO-1432 As, Norway
2.Norwegian Univ Life Sci, Fac Chem Biotechnol & Food Sci, NO-1432 As, Norway
3.Norwegian Univ Life Sci, Dept Anim & Aquacultural Sci, Ctr Integrat Genet, NO-1432 As, Norway
4.Umea Univ, Dept Plant Physiol, Umea Plant Sci Ctr, SE-90187 Umea, Sweden

Recommended Citation:
Schubert, Marian,Gronvold, Lars,Sandve, Simen R.,et al. Evolution of Cold Acclimation and Its Role in Niche Transition in the Temperate Grass Subfamily Pooideae[J]. PLANT PHYSIOLOGY,2019-01-01,180(1):404-419
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