Survival of A-group and B-group Leptosphaeria maculans (phoma stem canker) ascospores in air and mycelium on oilseed rape stem debris

A - Papers appearing in refereed journals

Huang, Y-J., Fitt, B. D. L. and Hall, A. M. 2003. Survival of A-group and B-group Leptosphaeria maculans (phoma stem canker) ascospores in air and mycelium on oilseed rape stem debris. Annals of Applied Biology. 143 (3), pp. 359-369.

AuthorsHuang, Y-J., Fitt, B. D. L. and Hall, A. M.
Abstract

Mycelium of Leptosphaeria maculans survived on oilseed rape stem base debris buried in sand for 2, 4, 6, 8, 10 or 12 months and produced pseudothecia after subsequent exposure on the surface of the ground under natural conditions for 2-4 months, but did not survive on upper stem debris buried for 2 months. Only A-group L. maculans ascospores were produced on the stem base debris which had been buried; no B-group ascospores were produced. Mycelium of L. maculans survived on both stem base and upper stem debris exposed on the sand surface for 2, 4, 6, 8, 10 or 12 months and pseudothecia with viable ascospores were observed at the time of sampling. Both A-group L. maculans (predominant on stem bases) and B-group L. maculans (predominant on upper stems) ascospores were produced on unburied stem base and upper stem debris. Thus B-group L. maculans survived longer on unburied debris than on buried debris. A-group ascospores which were exposed in dry air in darkness at 5-20degreesC survived longer than B-group ascospores; 10-37% of A-group ascospores, compared with 2-31% of B-group ascospores, survived after 35 days.

KeywordsAgriculture, Multidisciplinary
Year of Publication2003
JournalAnnals of Applied Biology
Journal citation143 (3), pp. 359-369
Digital Object Identifier (DOI)doi:10.1111/j.1744-7348.2003.tb00305.x
Open accessPublished as non-open access
Funder project or code422
507
ISSN00034746
PublisherWiley

Permalink - https://repository.rothamsted.ac.uk/item/890z6/survival-of-a-group-and-b-group-leptosphaeria-maculans-phoma-stem-canker-ascospores-in-air-and-mycelium-on-oilseed-rape-stem-debris

1 total views
0 total downloads
0 views this month
0 downloads this month