Exotic alleles contribute to heat tolerance in wheat under field conditions.
Exotic alleles contribute to heat tolerance in wheat under field conditions.
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DOI：
10.1038/s42003-022-04325-5
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发表时间：
2023-01-09
影响因子：
5.9
通讯作者：
中科院分区：
文献类型：
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作者：
全球变暖对粮食安全构成重大威胁，需要开发能够抵御未来气候不稳定的作物品种。通过在产量潜力和热胁迫条件下对149个春小麦品系进行田间评估，我们证明了与优质品系相比，外来材料的战略性整合如何在热胁迫下显著提高产量，而在有利条件下没有显著的产量损失。遗传分析揭示了这种耐热性背后的三个外来遗传位点，它们共同使产量提高50%以上，并使冠层温度降低约2°C。我们发现了一只Ae。tauschii基因渐渗是这些关联中最重要的基础，并提取了渐渗的Ae。陶氏基因，揭示进一步解剖的候选者。将这些外来等位基因纳入育种计划可以作为一种先发制人的策略，生产出能够抵御未来气候不确定性影响的高产小麦品种。通过对149个小麦基因型的比较表型分析和全基因组关联研究，揭示了与耐热性相关的等位基因，为今后小麦品种的选育提供参考。
Global warming poses a major threat to food security and necessitates the development of crop varieties that are resilient to future climatic instability. By evaluating 149 spring wheat lines in the field under yield potential and heat stressed conditions, we demonstrate how strategic integration of exotic material significantly increases yield under heat stress compared to elite lines, with no significant yield penalty under favourable conditions. Genetic analyses reveal three exotic-derived genetic loci underlying this heat tolerance which together increase yield by over 50% and reduce canopy temperature by approximately 2 °C. We identified an Ae. tauschii introgression underlying the most significant of these associations and extracted the introgressed Ae. tauschii genes, revealing candidates for further dissection. Incorporating these exotic alleles into breeding programmes could serve as a pre-emptive strategy to produce high yielding wheat cultivars that are resilient to the effects of future climatic uncertainty. Comparative phenotyping and genome-wide association study in a panel of 149 wheat genotypes reveal alleles associated with heat tolerance, which could be useful in future breeding programmes for wheat cultivars.
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影响因子：
46.9
作者：
Gaurav K;Arora S;Silva P;Sánchez-Martín J;Horsnell R;Gao L;Brar GS;Widrig V;John Raupp W;Singh N;Wu S;Kale SM;Chinoy C;Nicholson P;Quiroz-Chávez J;Simmonds J;Hayta S;Smedley MA;Harwood W;Pearce S;Gilbert D;Kangara N;Gardener C;Forner-Martínez M;Liu J;Yu G;Boden SA;Pascucci A;Ghosh S;Hafeez AN;O'Hara T;Waites J;Cheema J;Steuernagel B;Patpour M;Justesen AF;Liu S;Rudd JC;Avni R;Sharon A;Steiner B;Kirana RP;Buerstmayr H;Mehrabi AA;Nasyrova FY;Chayut N;Matny O;Steffenson BJ;Sandhu N;Chhuneja P;Lagudah E;Elkot AF;Tyrrell S;Bian X;Davey RP;Simonsen M;Schauser L;Tiwari VK;Randy Kutcher H;Hucl P;Li A;Liu DC;Mao L;Xu S;Brown-Guedira G;Faris J;Dvorak J;Luo MC;Krasileva K;Lux T;Artmeier S;Mayer KFX;Uauy C;Mascher M;Bentley AR;Keller B;Poland J;Wulff BBH
通讯作者：
Wulff BBH
影响因子：
6.9
作者：
Colmer, TD;Flowers, TJ;Munns, R
通讯作者：
Munns, R
影响因子：
6.6
作者：
Alvarado, Gregorio;Rodriguez, Francisco M.;Lopez-Cruz, Marco A.
通讯作者：
Lopez-Cruz, Marco A.
使用下一代 DNA 测序数据进行变异发现和基因分型的框架。
影响因子：
30.8
作者：
通讯作者：
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影响因子：
9.8
作者：
Browning, Brian L.;Zhou, Ying;Browning, Sharon R.
通讯作者：
Browning, Sharon R.