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Rvi4和Rvi15是相同的果皮抗性基因

Andreas Peil¹, Nicholas P Howard², Simone Bühlmann-Schütz³

¹Julius Kühn Institut (JKI)-Federal Research Centre for Cultivated Plants, Institute for Breeding Research on Fruit Crops, Pillnitzer Platz 3a, 01326 Dresden, Pillnitz Germany.

Molecular breeding : new strategies in plant improvement

|October 13, 2023

概括

果皮抗性基因Rvi4和Rvi15被证实是相同的基因. 这一发现澄清了它们的果育种身份,并建议使用Rvi4名称作为未来的参考.

科学领域:

植物病理学植物病理学
遗传学是一个遗传学.
园艺园艺园艺园艺

背景情况:

由Venturia inaequalis引起的果,是影响马卢斯 x domestica的一个主要疾病.
抗性基因Rvi4和Rvi15之前被映射到链接组2的类似区域,并诱导过敏反应.
Rvi4和Rvi15的潜在身份对果育种计划有影响.

研究的目的:

为了最终确定果皮耐药性基因Rvi4和Rvi15是否相同.
为了明确这些抗性基因在育种Malus x domestica.的利用.

主要方法:

基因型GMAL 2473 (Rvi15的来源) 的血统重建.
在携带Rvi4.4的品种中对抗性基因Vr2-C (Rvi15) 的比较分析.
测试表达Vr2-C的转基因线路与Venturia inaequalis种族对抗 4.

主要成果:

基因型GMAL 2473,Rvi15的来源,是"俄罗斯苗木"的F1,也是Rvi4.4的来源.
众所周知携带Rvi4的"Regia"品种拥有Vr2-C基因,可诱导Rvi15耐药性.
具有Vr2-C的转基因线条与种族4的果皮分离物显示出兼容性,证实了基因相同性.

结论:

耐药性基因Rvi4和Rvi15显然是相同的基因位置.
未来的研究和育种工作应该将这种耐药性基因称为Rvi4.4.
这一澄清有助于在果品种中战略部署耐药性.

关键词:

马卢斯 (Malus) x 家庭动物标记器辅助的选择抗性育种是一种抗性育种.风水不平等的风水.

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