Epidemiology and management of Leptosphaeria maculans (phoma stem canker) on oilseed rape in Australia, Canada and Europe

365Citations
Citations of this article
187Readers
Mendeley users who have this article in their library.

This article is free to access.

Abstract

Phoma stem canker (blackleg), caused by Leptosphaeria maculans, is an important disease on oilseed rape (canola, rapeseed, Brassica napus, Brassica juncea, Brassica rapa) causing seedling death, lodging or early senescence in Australia, Canada and Europe, but not in China. The two forms of L. maculans (A group and B group) that occur on oilseed rape are now considered to be separate species. The epidemiology and severity of phoma stem canker differs between continents due to differences in the pathogen population structure, oilseed rape species and cultivars grown, climate and agricultural practices. Epidemics are most severe in Australia, where only the A group occurs, and can be damaging in Canada and western Europe, where both A and B groups occur, although their proportions vary within regions and throughout the year. Epidemics are slight in China, where the A group has not been found. Dry climates (Australia, western Canada) lengthen the persistence of infected debris and may synchronize the release of airborne ascospores (after rain) with seedling emergence. L. maculans spreads from cotyledon and leaf infections down petioles to reach the stem, with infections on cotyledons and leaves early in the season producing the most damaging stem cankers at the stem base (crown). Development of both crown cankers and phoma stem lesions higher up stems is most rapid in regions with high temperatures from flowering to harvest, such as Australia and Canada. Breeding for resistance (genetic, disease escape or tolerance), stubble management, crop rotation and fungicide seed treatments are important strategies for control of phoma stem canker in all areas. Fungicide spray treatments are justified only in regions such as western Europe where high yields are obtained, and accurate forecasts of epidemic severity are needed to optimize their use.

References Powered by Scopus

A systemic pathway in the infection of oilseed rape plants by Leptosphaeria maculans

186Citations
N/AReaders
Get full text

History, occurrence, impact, and control of blackleg of rapeseed

156Citations
N/AReaders
Get full text

Genetic control and host range of avirulence toward Brassica napus cultivars Quinta and Jet Neuf in Leptosphaeria maculans

130Citations
N/AReaders
Get full text

Cited by Powered by Scopus

Pathogen population genetics, evolutionary potential, and durable resistance

1747Citations
N/AReaders
Get full text

World-wide importance of phoma stem canker (Leptosphaeria maculans and L. biglobosa) on oilseed Rape (Brassica napus)

390Citations
N/AReaders
Get full text

A phylogenetic evaluation of whether endophytes become saprotrophs at host senescence

351Citations
N/AReaders
Get full text

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

West, J. S., Kharbanda, P. D., Barbetti, M. J., & Fitt, B. D. L. (2001). Epidemiology and management of Leptosphaeria maculans (phoma stem canker) on oilseed rape in Australia, Canada and Europe. Plant Pathology. https://doi.org/10.1046/j.1365-3059.2001.00546.x

Readers over time

‘10‘11‘12‘13‘14‘15‘16‘17‘18‘19‘20‘21‘22‘23‘24‘2508162432

Readers' Seniority

Tooltip

PhD / Post grad / Masters / Doc 64

62%

Researcher 31

30%

Professor / Associate Prof. 7

7%

Lecturer / Post doc 2

2%

Readers' Discipline

Tooltip

Agricultural and Biological Sciences 98

80%

Environmental Science 12

10%

Biochemistry, Genetics and Molecular Bi... 9

7%

Chemistry 3

2%

Save time finding and organizing research with Mendeley

Sign up for free
0