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首页> 外文期刊>Genome >Cereal cyst nematode resistance conferred by the Cre7 gene from Aegilops triuncialis and its relationship with Cre genes from Australian wheat cultivars.
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Cereal cyst nematode resistance conferred by the Cre7 gene from Aegilops triuncialis and its relationship with Cre genes from Australian wheat cultivars.

机译：Aegilops triuncialis的Cre7基因赋予的谷物囊肿线虫抗性及其与澳大利亚小麦品种的Cre基因的关系。

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摘要

Cereal cyst nematode (CCN; Heterodera avenae Woll.) is a root pathogen of cereal crops that can cause severe yield losses in wheat (Triticum aestivum). Differential host-nematode interactions occur in wheat cultivars carrying different CCN resistance (Cre) genes. The objective of this study was to determine the CCN resistance conferred by the Cre7 gene from Aegilops triuncialis in a 42-chromosome introgression line and to assess the effects of the Cre1, Cre3, Cre4, and Cre8 genes present in Australian wheat lines on Spanish pathotype Ha71. Inhibition of nematode reproduction was rank-ordered as Cre1 >or = Cre4 > or = Cre7 Cre8 > Cre3. Lines carrying Cre1, Cre4, or Cre7 exhibited a significantly higher level of resistance than those carrying Cre8 or Cre3. Allelism tests indicated that Cre7 segregated independently of Cre1 on chromosome 2BL and Cre4 on chromosome 2DL, and these genes could consistently be combined in the same genotype, inducing a more durable resistance. Tests to determine the chromosomal location of Cre7 using addition lines were inconclusive.
机译：谷物囊肿线虫（CCN; Heterodera avenae Woll。）是谷物作物的根系病原体，可能导致小麦（Triticum aestivum）的严重减产。携带不同CCN抗性（Cre）基因的小麦品种中存在不同的宿主-线虫相互作用。这项研究的目的是确定来自Aegilops triuncialis的Cre7基因在42染色体渐渗系中产生的CCN抗性，并评估澳大利亚小麦系中存在的Cre1，Cre3，Cre4和Cre8基因对西班牙致病型的影响。哈71。线虫繁殖的抑制按Cre1>或= Cre4>或= Cre7 Cre8> Cre3的顺序排列。带有Cre1，Cre4或Cre7的线的电阻水平比带有Cre8或Cre3的线高得多。等位基因测试表明，Cre7独立于2BL染色体上的Cre1和2DL染色体上的Cre4进行分离，并且这些基因可以一致地组合在同一基因型中，从而诱导更持久的抗性。使用添加线确定Cre7染色体位置的测试尚无定论。

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