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- 저자 : Liatukas, Zilvinas (검색결과 2 건)
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Abdullah, Sidrat,Sehgal, Sunish Kumar,Ali, Shaukat,Liatukas, Zilvinas,Ittu, Mariana,Kaur, Navjot The Korean Society of Plant Pathology 2017 Plant Pathology Journal Vol.33 No.2
Tan spot, caused by the fungus Pyrenophora tritici-repentis, is economically important foliar disease in Latvia, Lithuania, and Romania; however, race structure from Baltic States and Romania is not known. In this study, we performed genotypic and phenotypic race characterization of a large collection of P. tritici-repentis isolates from these countries to determine race structure and utilize this information for better disease management and breeding wheat for tan spot resistance. We characterized 231 single spore isolates from Latvia (n = 15), Lithuania (n = 107), and Romania (n = 109) for Ptr ToxA and Ptr ToxB genes using two genes specific primers. A subset (139) of 231 isolates were further characterized for their race structure by inoculating them individually on tan spot wheat differentials set. Majority (83%) of the 231 isolates amplified Ptr ToxA gene suggesting prevalence of race 1 and 2. Further, phenotypic characterization of 139 isolates also showed wide prevalence of races 1 (68%), 2 (8%), 3 (11%), and 4 (5%) were also identified from Baltic States as well as Romania. Eighteen of the isolates (13%) did not seem to be of any of the eight known races as they lacked Ptr ToxA gene but they behaved like either race 1 or race 2, suggesting possibility of novel toxins in these isolates as their virulence tools.
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Sidrat Abdullah,Sunish Kumar Sehgal,Shaukat Ali,Zilvinas Liatukas,Mariana Ittu,Navjot Kaur 한국식물병리학회 2017 Plant Pathology Journal Vol.33 No.2
Tan spot, caused by the fungus Pyrenophora triticirepentis,is economically important foliar disease inLatvia, Lithuania, and Romania; however, race structurefrom Baltic States and Romania is not known. Inthis study, we performed genotypic and phenotypicrace characterization of a large collection of P. triticirepentisisolates from these countries to determinerace structure and utilize this information for betterdisease management and breeding wheat for tanspot resistance. We characterized 231 single sporeisolates from Latvia (n = 15), Lithuania (n = 107), andRomania (n = 109) for Ptr ToxA and Ptr ToxB genesusing two genes specific primers. A subset (139) of231 isolates were further characterized for their racestructure by inoculating them individually on tan spotwheat differentials set. Majority (83%) of the 231 isolatesamplified Ptr ToxA gene suggesting prevalenceof race 1 and 2. Further, phenotypic characterizationof 139 isolates also showed wide prevalence of races 1(68%), 2 (8%), 3 (11%), and 4 (5%) were also identifiedfrom Baltic States as well as Romania. Eighteenof the isolates (13%) did not seem to be of any of theeight known races as they lacked Ptr ToxA gene butthey behaved like either race 1 or race 2, suggestingpossibility of novel toxins in these isolates as theirvirulence tools.
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