Genetic diversity of Pyrenophora tritici-repentis in Algeria as revealed by amplified fragement length polymorphism (AFLP) analysis
Material type: ArticlePublication details: 2013ISSN:- 1684-5315
Item type | Current library | Collection | Call number | Status | Date due | Barcode | Item holds | |
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Article | CIMMYT Knowledge Center: John Woolston Library | CIMMYT Staff Publications Collection | CIS-7198 (Browse shelf(Opens below)) | Available |
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Peer-review: No - Open Access: Yes|http://www.ajol.info/index.php/ajb
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Tan spot caused by Pyrenophora tritici-repentis is a major wheat disease. DNA of 61 isolates of P.|tritici-repentis from different cereal growing areas in Algeria were analyzed using amplified fragment|length polymorphism (AFLP) in order to study the genetic diversity among this population. Initially, 78|primer combinations were tested, of which 12 were selected and applied to the 61 isolates. There was a|high genetic diversity in this population of P. tritici-repentis with 61 different haplotypes among the 61|isolates selected. The Jaccard similarity index range was 1.43 to 68.37%. Cluster analysis showed that,|clustering of isolates was independent of their race classification, geographic origin, or host plant.|However, one isolate (Ptr24) that showed a new virulence pattern in our previous race analysis study|was clearly distinguished from the rest of the population studied. This isolate had not only new|virulence but also different genetic makeup to other P. tritici-repentis isolates and requires additional|studies to decipher complete knowledge of host-pathogen interactions for tan spot of wheat.
Global Wheat Program
English
CIMMYT Informa No. 1851| Academic Journals
INT3301
CIMMYT Staff Publications Collection