Genetic relationships between race-nonspecific and race-specific interactions in the wheat-Pyrenophora tritici-repentis pathosystem

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
Gayan K KariyawasamZ Liu

Abstract

We identified a major QTL conferring race-nonspecific resistance and revealed its relationships with race-specific interactions in the wheat- Pyrenophora tritici-repentis pathosystem. Tan spot, caused by the fungus Pyrenophora tritici-repentis (Ptr), is a destructive disease of wheat worldwide. The disease system is known to include inverse gene-for-gene, race-specific interactions involving the recognition of fungal-produced necrotrophic effectors (NEs) by corresponding host sensitivity genes. However, quantitative trait loci (QTLs) conferring race-nonspecific resistance have also been identified. In this work, we identified a major race-nonspecific resistance QTL and characterized its genetic relationships with the NE-host gene interactions Ptr ToxA-Tsn1 and Ptr ToxC-Tsc1 in a recombinant inbred wheat population derived from the cross between 'Louise' and 'Penawawa.' Both parental lines were sensitive to Ptr ToxA, but Penawawa and Louise were highly resistant and susceptible, respectively, to conidial inoculations of all races. Resistance was predominantly governed by a major race-nonspecific QTL on chromosome arm 3BL for resistance to all races. Another significant QTL was detected at the distal end of chromosome arm 1AS for...Continue Reading

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Citations

Nov 14, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Yuan LiuXuehui Li
Dec 22, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Justin D FarisZhaohui Liu
Dec 9, 2017·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Aimin WenZhaohui Liu
Jun 23, 2020·Phytopathology·JIngwei GuoZhaohui Liu
Apr 18, 2020·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Nelomie GalagedaraZhaohui Liu
Oct 18, 2018·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Eric G DinglasanLee T Hickey
Mar 16, 2017·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Zhaohui LiuMaricelis Acevedo
May 22, 2020·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Yuan LiuXuehui Li
Mar 19, 2021·Saudi Journal of Biological Sciences·Oksana Yu KremnevaNadezhda M Kovalenko
Jun 2, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Eric G DinglasanLee T Hickey

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