Histological characterization of resistance in lactuca saligna to lettuce downy mildew (Bremia lactucae)

1994 ◽  
Vol 44 (2) ◽  
pp. 125-139 ◽  
Author(s):  
A. Lebeda ◽  
K. Reinink
Keyword(s):  
Downy Mildew ◽  
Bremia Lactucae ◽  
Lettuce Downy Mildew ◽  
Lactuca Saligna

scholarly journals Host interactors of effector proteins of the lettuce downy mildew Bremia lactucae obtained by yeast two-hybrid screening

PLoS ONE ◽  
2020 ◽  
Vol 15 (5) ◽  
pp. e0226540 ◽  
Author(s):  
Alexandra J. E. Pelgrom ◽  
Claudia-Nicole Meisrimler ◽  
Joyce Elberse ◽  
Thijs Koorman ◽  
Mike Boxem ◽  
...  
Keyword(s):  
Downy Mildew ◽  
Effector Proteins ◽  
Bremia Lactucae ◽  
Yeast Two Hybrid ◽  
Lettuce Downy Mildew ◽  
Two Hybrid ◽  
Hybrid Screening

scholarly journals Insensitivity to the Fungicide Fosetyl-Aluminum in California Isolates of the Lettuce Downy Mildew Pathogen, Bremia lactucae

Plant Disease ◽  
2004 ◽  
Vol 88 (5) ◽  
pp. 502-508 ◽  
Author(s):  
Sarah Brown ◽  
Steven T. Koike ◽  
Oswaldo E. Ochoa ◽  
Frank Laemmlen ◽  
Richard W. Michelmore
Keyword(s):  
Quantitative Analysis ◽  
Downy Mildew ◽  
Mating Type ◽  
Control Measures ◽  
Bremia Lactucae ◽  
Widespread Occurrence ◽  
Lettuce Downy Mildew ◽  
Normal Field ◽  
Growth Room ◽  
Disease Pressure

Lettuce downy mildew, caused by Bremia lactucae, is the most important foliar disease of lettuce in California. In recent years, there were apparent failures of fungicides containing fosetyl-aluminum (Aliette) to control downy mildew in commercial lettuce fields in California. Consequently, we characterized 134 isolates collected over 2 years from throughout the coastal growing areas of California for insensitivity to the fungicides fosetyl-aluminum and maneb, pathotype, and mating type. Tests using seedlings in controlled growth room conditions demonstrated the widespread occurrence of insensitivity to fosetyl-aluminum in California populations of B. lactucae. Fifty percent of the isolates assayed sporulated profusely in the presence of fosetyl-aluminum applied at rates twice the normal field dosage, and an additional 40% showed moderate sporulation at this rate. Fosetyl-aluminum-insensitive isolates were detected from all regions sampled. Insensitivity was also observed in multiple pathotypes. Insensitivity was not complete, however, because quantitative analysis of the number of lesions on older plants revealed that applications of fosetyl-aluminum could reduce the levels of disease by 50%. Therefore, while fosetyl-aluminum may have utility under low disease pressure in the field, other control measures are required to provide control under conditions favorable to the disease.

scholarly journals Effector identification in the lettuce downy mildew Bremia lactucae by massively parallel transcriptome sequencing

2012 ◽  
Vol 13 (7) ◽  
pp. 719-731 ◽  
Author(s):  
JOOST H. M. STASSEN ◽  
MICHAEL F. SEIDL ◽  
PIM W. J. VERGEER ◽  
ISAÄC J. NIJMAN ◽  
BEREND SNEL ◽  
...  
Keyword(s):  
Downy Mildew ◽  
Transcriptome Sequencing ◽  
Massively Parallel ◽  
Bremia Lactucae ◽  
Lettuce Downy Mildew
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