Investigating In Vitro Mating Preference Between or Within the Two Forms of Pyrenophora teres and Its Hybrids

• DOI: 10.1094/phyto-02-21-0058-r
• Publication Date: 2021-05-25T12:42:33Z
• Authors: Buddhika A. Dahan...; Niloofar Vaghefi; Lislé Snyman; Anke Martin
• Keywords: 580; 0301 basic medicine; sexual reproduction; Introgression; Reproduction; Reproduction vigour; Hordeum; Recombination; Back crosses; Plant pests and diseases; 03 medical and health sciences; Ascomycota; Hybridisation; Genetics; Plant pathology; Plant Diseases

Net blotch diseases result in significant yield losses to barley industries worldwide. They occur as net-form and spot-form net caused by Pyrenophorateres f. teres P. maculata, respectively. Hybridization between the forms was proposed be rare, but recent identifications of field hybrids has renewed interest frequency mechanisms underlying hybridization. This study investigates mating preference teres, laboratory-produced vitro, using 24 different isolates four experimental setups. Two crosses our produced ascospores during two intervals separated a 32- 35-day period no ascospore production. For these crosses, mated with same form early production interval, later interval. maculata did not mate form, instead hybridized isolates. Analyses based on DArTseq markers confirmed that hybrids, when given choice both These results unravel novel concept seems have greater reproduction vigor than which could lead increased prevalence hybrid incidences vivo.