A - Papers appearing in refereed journals
Huang, Y-J., Toscano-Underwood, C., Fitt, B. D. L., Hu, X. J. and Hall, A. M. 2003. Effects of temperature on ascospore germination and penetration of oilseed rape (Brassica napus ) leaves by A- or B-group Leptosphaeria maculans (phoma stem canker). Plant Pathology. 52 (2), pp. 245-255.
|Authors||Huang, Y-J., Toscano-Underwood, C., Fitt, B. D. L., Hu, X. J. and Hall, A. M.|
Ascospores of both A-group and B-group Leptosphaeria maculans germinated at temperatures from 5 to 20degreesC on leaves of oilseed rape. Germination of ascospores of both groups started 2 h after inoculation and percentage germination reached its maximum about 14 h after inoculation at all temperatures. Both the percentage of A-/B-group ascospores that had germinated after 24 h incubation and germ tube length increased with increasing temperature from 5 to 20degreesC. Germ tubes from B-group ascospores were longer than those from A-group ascospores at all temperatures, with the greatest difference at 20degreesC. Hyphae from ascospores of both groups penetrated the leaves predominantly through stomata, at temperatures from 5 to 20degreesC. A-group ascospores produced highly branched hyphae that grew tortuously, whereas B-group ascospores produced long, straight hyphae. The percentage of germinated ascospores that penetrated stomata increased with increasing temperature from 5 to 20degreesC and was greater for A-group than for B-group L. maculans after 40 h incubation.
|Keywords||Agronomy; Plant Sciences|
|Year of Publication||2003|
|Journal citation||52 (2), pp. 245-255|
|Digital Object Identifier (DOI)||doi:10.1046/j.1365-3059.2003.00813.x|
|Open access||Published as non-open access|
|Funder project or code||424|
|Epidemiology of winter oilseed rape diseases|
|Quantitative comparative plant disease epidemiology|
Permalink - https://repository.rothamsted.ac.uk/item/88zq8/effects-of-temperature-on-ascospore-germination-and-penetration-of-oilseed-rape-brassica-napus-leaves-by-a-or-b-group-leptosphaeria-maculans-phoma-stem-canker