Genetic differentiation in Pyrenophora teres populations measured with AFLP markers

Serenius, Marjo; Manninen, Outi; Wallwork, H.; Williams, Kevin Jon

doi:10.1016/j.mycres.2006.11.009

Cited by 39 publications

(55 citation statements)

References 40 publications

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“…This is because the sexual cycle leads to the production of new genotypes from which the frequency of individuals with best fitness can increase through an asexual reproductive phase. Although PTT and PTM have been shown to hybridise in the laboratory (McDonald 1963;Campbell et al 1999), it probably happens very rarely or not at all under field conditions (Campbell et al 2002;Rau et al 2003;Leisova et al 2005b;Serenius et al 2007).…”

Section: Introductionmentioning

confidence: 99%

“…The genetic structure of P. teres populations has previously been investigated using random amplified polymorphic DNA (RAPD) (Peever & Milgroom 1994;Jonsson et al 2000;Campbell et al 2002) and amplified fragment length polymorphism (AFLP) (Rau et al 2003;Leisova et al 2005b;Serenius et al 2007) molecular markers. In these studies, varying levels of genetic diversity were detected among populations, with geographical distance shown to be a factor in determining the level of genetic differentiation between populations.…”

Section: Introductionmentioning

confidence: 99%

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Genetic structure of South Australian Pyrenophora teres populations as revealed by microsatellite analyses

2010

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic structure of South Australian Pyrenophora teres populations as revealed by microsatellite analyses

2010

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“…(anamorph: Drechslera teres) is a predominant foliar disease of Moroccan barley crops (Douiyssi et al 1998;El Yousfi 2002) and prevails elsewhere in any barley-growing region of the world (Steffenson and Webster 1992;Serenius et al 2007). The causal agent occurs in two forms, one producing net-type symptoms and the other producing spot-type symptoms (Tekauz 1990).…”

Section: Introductionmentioning

confidence: 99%

“…The causal agent occurs in two forms, one producing net-type symptoms and the other producing spot-type symptoms (Tekauz 1990). However, the net form caused by P. teres f. teres was reported to be more prevalent than P. teres f. maculata producing the spot form (Tekauz 1990;Serenius et al 2007). In Morocco, yield losses range from 14 to 29% and reach 39% on susceptible cultivars (El Yousfi and Ezzahiri 2001).…”

Section: Introductionmentioning

confidence: 99%

Barley yield losses due to defoliation of upper three leaves either healthy or infected at boot stage by Pyrenophora teres f. teres

Jebbouj

Yousfi

2009

Eur J Plant Pathol

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This paper evaluates, in the greenhouse and under natural conditions, barley yield losses due to defoliation treatments of the upper three leaves either healthy or infected at the boot stage by Pyrenophora teres f. teres. Defoliation was assumed as a loss of a similar leaf area caused by net blotch disease severity of 100%. Contribution to grain yield was defined herein as a difference between defoliation treatments and a treatment where plants lost all their upper three leaves. In contrast, yield losses referred to differences in yield between defoliations and the control. In the greenhouse, removal of the antepenultimate leaf did not affect any yield component. For main stems, defoliating upper three leaves reduced grain yield by 30% and this was mainly due to flag leaf removal. These losses were similar to those induced by net blotch disease under natural conditions, but were of 42% for all tillers. Grain yield losses due to disease severity were not equivalent to the defoliation effect of a similar healthy leaf area. On the other hand and for a significant contribution to grain yield, flag leaf was dependent on the presence of the other two leaves. Inoculation and defoliation of 21 cultivars induced similar grain yield losses of 32%. However, biotic stress reduced by 40% the contribution of their upper three leaves. Under field conditions, yield losses were not significant until barley plants lost more than one upper leaf and flag leaf contribution was equivalent to that of the remaining leaves. Characteristic roots, defined as leaf coefficients for plant performance, were 0.13, 0.06 and 0.01 for the flag, penultimate and antepenultimate leaves, respectively. Because antepenultimate leaves become trivial at the boot stage, we propose that coefficients of the remaining leaves should be used when modelling yield losses due to barley foliar diseases.

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“…AFLP, have been used in different works for characterize the population of different Pyrenophora species (Friesen et al, 2005;Leisová et al, 2005Leisová et al, , 2008Serenius et al, 2007). This procedure is based on the selective amplification of genomic restriction fragments.…”

Section: Amplified Fragment Length Polymorphisms (Aflp)mentioning

confidence: 99%

Pyrenophora tritici-repentis, Causal Agent of Tan Spot: A Review of Intraspecific Genetic Diversity

Moreno¹,

Stenglein²,

Perelló³

2012

The Molecular Basis of Plant Genetic Diversity

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Genetic differentiation in Pyrenophora teres populations measured with AFLP markers

Cited by 39 publications

References 40 publications

Genetic structure of South Australian Pyrenophora teres populations as revealed by microsatellite analyses

Genetic structure of South Australian Pyrenophora teres populations as revealed by microsatellite analyses

Barley yield losses due to defoliation of upper three leaves either healthy or infected at boot stage by Pyrenophora teres f. teres

Pyrenophora tritici-repentis, Causal Agent of Tan Spot: A Review of Intraspecific Genetic Diversity

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