Small brown planthopper resistance loci in wild rice (Oryzaofficinalis)
Small brown planthopper resistance loci in wild rice (Oryzaofficinalis)
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DOI：
10.1007/s00438-014-0814-8
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发表时间：
2014-02
影响因子：
3.1
通讯作者：
Weilin Zhang;Yan Dong;Ling Yang;B. Ma;Rongrong Ma;F. Huang;Changchun Wang;Haitao Hu;
中科院分区：
文献类型：
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作者：
Weilin Zhang;Yan Dong;Ling Yang;B. Ma;Rongrong Ma;F. Huang;Changchun Wang;Haitao Hu;
寄主植物抗性是防治稻飞虱最经济实用的方法。然而，迄今为止，很少有水稻种质资源对这三种稻飞虱都具有抗性褐飞虱（Nilaparvata lugensStål）;（2）小褐飞虱（SBPH;Laodelphax striatellusFallen）;（3）白背飞虱（白背飞虱Sogatella furciferaHorvath）;因此，在单一品种中寄主植物对稻飞虱广谱抗性的遗传基础研究很少。其中野生稻（Oryzaofficinalis，Acc.HY018，2n= 24，CC）对3种稻飞虱均表现抗性。O.目前，国内外对该菌的抗性研究主要集中在其对SBPH的抗性上。通过不对称体细胞杂交将抗稻瘟病基因导入栽培稻。利用SSST法检测到的3个抗条斑螟QTL分别定位在第3、7和12染色体上。对3种抗稻飞虱基因的等位/非等位关系和相对图谱位置的分析表明，抗稻飞虱基因中的SBPH、WBPH和BPH基因在药用野生稻中的等位/非等位关系最小。药用植物是由多个基因控制的，但不是由任何主基因控制的。单份寄主植物对稻飞虱的广谱抗性遗传数据表明，筛选稻飞虱的广谱抗性源是最理想、最经济的方法，而不是利用广谱抗性基因来治理稻飞虱。将这些基因聚合在一个品种中可能是一种有效的方法来管理稻飞虱。
Host-plant resistance is the most practical and economical approach to control the rice planthoppers. However, up to date, few rice germplasm accessions that are resistant to the all three kinds of planthoppers (1) brown planthopper (BPH;Nilaparvata lugensStål), (2) the small brown planthopper (SBPH;Laodelphax striatellusFallen), and (3) the whitebacked planthopper (WBPH,Sogatella furciferaHorvath) have been identified; consequently, the genetic basis for host-plant broad spectrum resistance to rice planthoppers in a single variety has been seldom studied. Here, one wild species,Oryzaofficinalis(Acc. HY018, 2n= 24, CC), was detected showing resistance to the all three kinds of planthoppers. Because resistance to WBPH and BPH inO. officinalishas previously been reported, the study mainly focused on its SBPH resistance. The SBPH resistance gene(s) was (were) introduced into cultivated rice via asymmetric somatic hybridization. Three QTLs for SBPH resistance detected by the SSST method were mapped and confirmed on chromosomes 3, 7, and 12, respectively. The allelic/non-allelic relationship and relative map positions of the three kinds of planthopper resistance genes inO.officinalisshow that the SBPH, WBPH, and BPH resistance genes inO. officinaliswere governed by multiple genes, but not by any major gene. The data on the genetics of host-plant broad spectrum resistance to planthoppers in a single accession suggested that the most ideally practical and economical approach for rice breeders is to screen the sources of broad spectrum resistance to planthoppers, but not to employ broad spectrum resistance gene for the management of planthoppers. Pyramiding these genes in a variety can be an effective way for the management of planthoppers.