אסיף מאגר המחקר החקלאי

Hybridization of powdery mildew strains gives rise to pathogens on novel agricultural crop species

Year:

2016

Source of publication :

Authors :

Volume :

48

Co-Authors:

Menardo, F., Department of Plant and Microbial Biology, University of Zürich, Zurich, Switzerland
Praz, C.R., Department of Plant and Microbial Biology, University of Zürich, Zurich, Switzerland
Wyder, S., Department of Plant and Microbial Biology, University of Zürich, Zurich, Switzerland
Ben-David, R., Department of Plant and Microbial Biology, University of Zürich, Zurich, Switzerland, Institute of Plant Science, ARO-Volcani Center, Bet Dagan, Israel
Bourras, S., Department of Plant and Microbial Biology, University of Zürich, Zurich, Switzerland
Matsumae, H., Institute of Evolutionary Biology and Environmental Studies, University of Zürich, Zurich, Switzerland
McNally, K.E., Department of Plant and Microbial Biology, University of Zürich, Zurich, Switzerland
Parlange, F., Department of Plant and Microbial Biology, University of Zürich, Zurich, Switzerland
Riba, A., Biozentrum, University of Basel, Basel, Switzerland
Roffler, S., Department of Plant and Microbial Biology, University of Zürich, Zurich, Switzerland
Schaefer, L.K., Department of Plant and Microbial Biology, University of Zürich, Zurich, Switzerland
Shimizu, K.K., Institute of Evolutionary Biology and Environmental Studies, University of Zürich, Zurich, Switzerland
Valenti, L., Department of Plant and Microbial Biology, University of Zürich, Zurich, Switzerland
Zbinden, H., Department of Plant and Microbial Biology, University of Zürich, Zurich, Switzerland
Wicker, T., Department of Plant and Microbial Biology, University of Zürich, Zurich, Switzerland
Keller, B., Department of Plant and Microbial Biology, University of Zürich, Zurich, Switzerland

Facilitators :

Link :

Abstract:

Throughout the history of agriculture, many new crop species (polyploids or artificial hybrids) have been introduced to diversify products or to increase yield. However, little is known about how these new crops influence the evolution of new pathogens and diseases. Triticale is an artificial hybrid of wheat and rye, and it was resistant to the fungal pathogen powdery mildew (Blumeria graminis) until 2001 (refs. 1,2,3). We sequenced and compared the genomes of 46 powdery mildew isolates covering several formae speciales. We found that B. graminis f. sp. triticale, which grows on triticale and wheat, is a hybrid between wheat powdery mildew (B. graminis f. sp. tritici) and mildew specialized on rye (B. graminis f. sp. secalis). Our data show that the hybrid of the two mildews specialized on two different hosts can infect the hybrid plant species originating from those two hosts. We conclude that hybridization between mildews specialized on different species is a mechanism of adaptation to new crops introduced by agriculture. © 2016 Nature America, Inc.

Note:

Related Files :

Related Content

More details

You may also be interested in