Resistance to Heterodera filipjevi and H. avenae in Winter Wheat is Conferred by Different QTL
| Autor: | Yongkang Ren, Yu Sun, Jinghuang Hu, Peipei Wu, Dan Qiu, Zhiyong Liu, Timothy D. Murray, Lei Cui, Zhang Hongjun, Hongjie Li, Jingzhong Xie, Yang Zhou, Jingting Li, Li Yang, Jingwei Zou, Hongwei Liu, Lei Sun, Yan Lv, Yan Wang |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Genetics Cereal cyst nematode Heterodera filipjevi Heterodera food and beverages Heterodera avenae Locus (genetics) Plant Science Aegilops ventricosa Biology Quantitative trait locus biology.organism_classification 01 natural sciences 03 medical and health sciences 030104 developmental biology Nematode Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Phytopathology®. 110:472-482 |
| ISSN: | 1943-7684 0031-949X |
| DOI: | 10.1094/phyto-04-19-0135-r |
| Popis: | The coexistence of cereal cyst nematode (CCN) species Heterodera avenae and H. filipjevi, often involving multiple pathotypes, is a limiting factor for wheat production in China. Some of the known genes for resistance to CCN are not effective against both nematode species, hence complicating breeding efforts to develop CCN-resistant wheat cultivars. Here, we demonstrate that the CCN resistance in wheat cultivar Madsen to both Heterodera spp. is controlled by different genetic loci, both of which originated from Aegilops ventricosa. A new quantitative trait locus (QTL), QCre-ma7D, was identified and localized in a 3.77-Mb genomic region on chromosome arm 7DL, which confers resistance to H. filipjevi. QCre-ma2A on chromosome arm 2AS corresponds to CCN resistance gene Cre5 and confers resistance to H. avenae. This QTL is a new locus on chromosome arm 7DL and is designated Cre9. Three Kompetitive allele-specific PCR markers (BS00150072, BS00021745, and BS00154302) were developed for molecular marker-assisted selection of Cre9 and locally adapted wheat lines with resistance to both nematode species were developed. QCre-ma2A on chromosome arm 2AS corresponds to CCN resistance gene Cre5 and confers resistance to H. avenae. The identification of different loci underlying resistance to H. filipjevi and H. avenae and the development of adapted resistant entries will facilitate breeding of wheat cultivars that are resistant to these devastating nematodes in China. |
| Databáze: | OpenAIRE |
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