Barley (Hordeum vulgare) circadian clock genes can respond rapidly to temperature in an EARLY FLOWERING 3-dependent manner.
Barley (Hordeum vulgare) circadian clock genes can respond rapidly to temperature in an EARLY FLOWERING 3-dependent manner.
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DOI：
10.1093/jxb/erw317
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发表时间：
2016-10
影响因子：
6.9
通讯作者：
Trevaskis B
中科院分区：
文献类型：
--
作者：
Ford B;Deng W;Clausen J;Oliver S;Boden S;Hemming M;Trevaskis B
在大麦中，巨人茶和假反应调节器时钟基因以EARLY FLOWARD3依赖的方式对温度迅速反应。全球气温的上升将影响未来的作物产量。在谷类作物小麦和大麦中，高温加速了生殖发育，减少了每株植物的谷粒数量和最终的谷物产量。尽管温度和谷物产量之间存在这种关系，但尚不清楚是什么基因和分子途径介导了对温度升高的发育反应。植物昼夜节律钟对温度变化具有响应性，对光周期依赖的开花具有重要意义，是控制禾谷类作物温度响应的潜在机制。本研究探讨了温度、生物钟和大麦（大麦）开花时间基因表达之间的关系，大麦是温带谷物的作物模型。在一定温度范围内测定大麦核心生物钟基因的转录水平。核心时钟基因CCA1、GI、PRR59、PRR73、PRR95和LUX的转录水平在较高温度下增加。CCA1和PRR73对温度的降低迅速响应，而GI和PRR59对温度的升高迅速响应。GI和PRR基因对温度变化的响应在elf3突变体中丢失，表明它们对温度的响应可能依赖于功能性ELF3基因。
In barley, GIGANTEA and the PSEUDO RESPONSE REGULATOR clock genes respond rapidly to temperature in an EARLY FLOWERING 3-dependent manner. An increase in global temperatures will impact future crop yields. In the cereal crops wheat and barley, high temperatures accelerate reproductive development, reducing the number of grains per plant and final grain yield. Despite this relationship between temperature and cereal yield, it is not clear what genes and molecular pathways mediate the developmental response to increased temperatures. The plant circadian clock can respond to changes in temperature and is important for photoperiod-dependent flowering, and so is a potential mechanism controlling temperature responses in cereal crops. This study examines the relationship between temperature, the circadian clock, and the expression of flowering-time genes in barley (Hordeum vulgare), a crop model for temperate cereals. Transcript levels of barley core circadian clock genes were assayed over a range of temperatures. Transcript levels of core clock genes CCA1, GI, PRR59, PRR73, PRR95, and LUX are increased at higher temperatures. CCA1 and PRR73 respond rapidly to a decrease in temperature whereas GI and PRR59 respond rapidly to an increase in temperature. The response of GI and the PRR genes to changes in temperature is lost in the elf3 mutant indicating that their response to temperature may be dependent on a functional ELF3 gene.
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影响因子：
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