Skip Navigation

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by HARRISON, J. G.
Right arrow Search for Related Content
PubMed
Right arrow Articles by HARRISON, J. G.
Agricola
Right arrow Articles by HARRISON, J. G.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Annals of Botany 52: 823-838, 1983
© 1983 Annals of Botany Company

RESEARCH-ARTICLE

Growth of Lesions Caused by Botrytis fabae on Field Bean Leaves in Relation to Foliar Bacteria, Non-enzymic Phytotoxins, Pectic Enzymes and Osmotica

J. G. HARRISON

Scottish Crop Research Institute Invergowrie, Dundee, DD2 5DA

Accepted: 5 May 1983   

Extracts from spreading chocolate spot lesions contained a heat-stable, water-soluble, ether- or ethanol-insoluble phytotoxic fraction. Elution from Sephadex G75 indicated that the molecular weights of the toxic compounds were between 10000 and 30000 daltons. The toxins were adsorbed on DEAE Sephadex and eluted from it with 0.1–0.2 M NaCl. Toxic activity was enhanced in solutions with low osmotic potentials similar to those found in lesions. Controlling the growth of contaminating bacteria in lesions with antibiotics appeared to reduce the levels of heat-stable toxins extracted and to reduce the rate of increase in lesion size.

There were high levels of polygalacturonase (PG) activity in lesion extracts; large quantitites of PG, but little or no trans-eliminases, were produced by Botrytis fabae in liquid culture. A pectolytic strain of Bacillus lentus was associated with trans-eliminases in lesion extracts, and produced transeliminases, but not PG, in liquid culture.

Activities of both heat-stable phytotoxins and of pectic enzymes may depend on fungal isolate and types and populations of contaminating bacteria.

Botrytis fabae L., Bacillus, Vicia faba L., phytotoxins, pectic enzymes, chocolate spot


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.