Distribution of Compatibility Types and Occurrence of Sexual Reproduction in Natural Populations of Bremia lactucae on Wild Lactuca serriola plants

I. Petrzelová; A. Lebeda

doi:10.1556/aphyt.38.2003.1-2.6

Acta Phytopathologica et Entomologica Hungarica

Volume/Issue:: Volume 38: Issue 1-2

Distribution of Compatibility Types and Occurrence of Sexual Reproduction in Natural Populations of Bremia lactucae on Wild Lactuca serriola plants

Authors:

I. Petrzelová

I. Petrzelová Department of Botany, Faculty of Science, Palacky University, Slechtitelu 11, 783 71 Olomouc-Holice, Czech Republic

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A. Lebeda

A. Lebeda Department of Botany, Faculty of Science, Palacky University, Slechtitelu 11, 783 71 Olomouc-Holice, Czech Republic

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Pages:: 43–52

Online Publication Date:: 22 Jul 2005

Publication Date:: 01 Apr 2003

Article Category:: Journal Article

DOI:: https://doi.org/10.1556/aphyt.38.2003.1-2.6

Keywords:: wild plant pathosystem; wild plant pathosystem; prickly lettuce; lettuce downy mildew; mating types; heterothallism; oospore formation

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The occurrence of sexual compatibility types (mating types) was studied in a set of 59 Bremia lactucae isolates originating from 33 naturally infected and wild populations of Lactuca serriola (prickly lettuce) plants occurring in the Czech Republic, Germany and France. The isolates were collected in the period 1997-1999 as part of detailed population studies of virulence structure. Both compatibility types (B1 and B2) were recorded. However, the majority of the isolates was determined as type B2, with only two isolates being type B1. The reasons for and influence of this sexual structure are discussed in relation to the virulence of pathogen populations and interactions between wild and crop pathosystems. Occurrence of natural sexual reproduction of B. lactucae on L. serriola plants was extremely rare. Virulence variation of B. lactucae populations occurring on L. serriola would not seem to be related to sexual reproduction.

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Acta Phytopathologica et Entomologica Hungarica

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Ágnes TURÓCI Centre for Agricultural Research, Hungary

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K SALÁNKI Centre for Agricultural Research, Hungary

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Z BOZSÓ Centre for Agricultural Research, Hungary

PE CHETVERIKOV Saint-Petersburg State University, Russia

JX CUI Henan Institute of Science and Technology, China

J FODOR Centre for Agricultural Research, Hungary

Z IMREI Centre for Agricultural Research, Hungary

BM KAYDAN Çukurova University, Turkey

L KISS University of Southern Queensland, Australia

V MARKÓ Hungarian University of Agriculture and Life Sciences, Hungary

MW NEGM Ibaraki University, Japan

L PALKOVICS Széchenyi István University, Hungary

M POGÁNY Centre for Agricultural Research, Hungary

D RÉDEI National Chung Hsing University, Taiwan

A TOLSTIKOV University of Tyumen, Russia

J VUTS Rothamsted Research, UK

GQ WANG Guangxi University, China

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Acta Phytopathologica et Entomologica Hungarica
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