Knowledge Center Catalog

Local cover image
Local cover image

Genetic diversity of Pyrenophora tritici-repentis in Algeria as revealed by amplified fragement length polymorphism (AFLP) analysis

By: Contributor(s): Material type: ArticleArticlePublication details: 2013ISSN:
  • 1684-5315
Subject(s): Online resources: In: African Journal of Biotechnology v. 12, no. 26, p. 4082-4093Summary: 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.
Tags from this library: No tags from this library for this title. Log in to add tags.
Star ratings
    Average rating: 0.0 (0 votes)

Peer-review: No - Open Access: Yes|http://www.ajol.info/index.php/ajb

Peer review

Open Access

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

Click on an image to view it in the image viewer

Local cover image

International Maize and Wheat Improvement Center (CIMMYT) © Copyright 2021.
Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237.
If you have any question, please contact us at
CIMMYT-Knowledge-Center@cgiar.org