The CBF gene family in hexaploid wheat and its relationship to the phylogenetic complexity of cereal CBFs.
The CBF gene family in hexaploid wheat and its relationship to the phylogenetic complexity of cereal CBFs.
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DOI：
10.1007/s00438-006-0206-9
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发表时间：
2007-05
影响因子：
3.1
通讯作者：
Sarhan, Fathey
中科院分区：
文献类型：
--
作者：
Badawi, Mohamed;Danyluk, Jean;Boucho, Barbara;Houde, Mario;Sarhan, Fathey
大多数温带植物都能忍受低温和冰点，而热带地区的许多物种在稍高于冰点的温度下会遭受冷害。冷驯化诱导了保护植物免受冰冻胁迫所需的冷调节基因的表达。这种诱导部分由CBF转录因子家族介导。为了了解该家族在谷类中的进化和功能，我们鉴定并表征了来自六倍体小麦的15个不同CBF基因。我们的分析表明，小麦品种，T。aestivum和T.单球孢属（monococcum）可能含有多达25个不同的CBF基因，禾本科CBF可分为10个组，这些组具有共同的系统发育起源和相似的结构特征。其中六组（IIIc，IIId，IVa，IVb，IVc和IVd）只发现在Pooideae表明他们代表CBF响应机制，最近在温带栖息地殖民化。表达研究表明，五个Pooideae特定的群体显示较高的组成型和低温诱导表达的冬季品种，在温暖的温度下生长过程中的昼夜调节模式。这些CBF组中较高的组成型和诱导型表达是一种遗传性状，可能在冬季品种的上级低温耐受能力中发挥主导作用，并且可能是早熟禾亚科内抗冻性遗传变异的基础。本文的在线版本（doi：10.1007/s00438 - 006 - 0206 - 9）包含补充材料，可供授权用户使用。
Most temperate plants tolerate both chilling and freezing temperatures whereas many species from tropical regions suffer chilling injury when exposed to temperatures slightly above freezing. Cold acclimation induces the expression of cold-regulated genes needed to protect plants against freezing stress. This induction is mediated, in part, by the CBF transcription factor family. To understand the evolution and function of this family in cereals, we identified and characterized 15 different CBF genes from hexaploid wheat. Our analyses reveal that wheat species, T. aestivum and T. monococcum, may contain up to 25 different CBF genes, and that Poaceae CBFs can be classified into 10 groups that share a common phylogenetic origin and similar structural characteristics. Six of these groups (IIIc, IIId, IVa, IVb, IVc and IVd) are found only in the Pooideae suggesting they represent the CBF response machinery that evolved recently during colonization of temperate habitats. Expression studies reveal that five of the Pooideae-specific groups display higher constitutive and low temperature inducible expression in the winter cultivar, and a diurnal regulation pattern during growth at warm temperature. The higher constitutive and inducible expression within these CBF groups is an inherited trait that may play a predominant role in the superior low temperature tolerance capacity of winter cultivars and possibly be a basis of genetic variability in freezing tolerance within the Pooideae subfamily. The online version of this article (doi:10.1007/s00438-006-0206-9) contains supplementary material, which is available to authorized users.
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影响因子：
7.4
作者：
Jaglo, KR;Kleff, S;Thomashow, MF
通讯作者：
Thomashow, MF
影响因子：
7.4
作者：
Fowler, SG;Cook, D;Thomashow, ME
通讯作者：
Thomashow, ME
影响因子：
3.3
作者：
Gill, Bikram S.;Appels, Rudi;Sasaki, Takuji
通讯作者：
Sasaki, Takuji
DOI：
10.1073/pnas.072223799
发表时间：
2002-06-11
影响因子：
11.1
作者：
Huang, S;Sirikhachornkit, A;Gornicki, P
通讯作者：
Gornicki, P
影响因子：
5.1
作者：
Gilmour, SJ;Fowler, SG;Thomashow, MF
通讯作者：
Thomashow, MF