The intersection between cell wall disassembly, ripening, and fruit susceptibility to Botrytis cinerea

Fruit ripening is characterized by processes that modify texture and flavor but also by a dramatic increase in susceptibility to necrotrophic pathogens, such as Botrytis cinerea. Disassembly of the major structural polysaccharides of the cell wall (CW) is a significant process associated with ripeni...

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Detalles Bibliográficos
Autores principales: Cantu, D., Vicente, Ariel Roberto, Greve, L. C., Dewey, F. M., Bennett, A. B., Labavitch, J. M., Powell, A. L.T.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2008
Materias:
Ciencias Agrarias
Expansin
Plant pathogen
Polygalacturonase
Tomato
Patógeno
Tomate
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84282
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-84282
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Expansin
Plant pathogen
Polygalacturonase
Tomato
Patógeno
Tomate
spellingShingle Ciencias Agrarias
Expansin
Plant pathogen
Polygalacturonase
Tomato
Patógeno
Tomate
Cantu, D.
Vicente, Ariel Roberto
Greve, L. C.
Dewey, F. M.
Bennett, A. B.
Labavitch, J. M.
Powell, A. L.T.
The intersection between cell wall disassembly, ripening, and fruit susceptibility to Botrytis cinerea
topic_facet Ciencias Agrarias
Expansin
Plant pathogen
Polygalacturonase
Tomato
Patógeno
Tomate
description Fruit ripening is characterized by processes that modify texture and flavor but also by a dramatic increase in susceptibility to necrotrophic pathogens, such as Botrytis cinerea. Disassembly of the major structural polysaccharides of the cell wall (CW) is a significant process associated with ripening and contributes to fruit softening. In tomato, polygalacturonase (PG) and expansin (Exp) are among the CW proteins that cooperatively participate in ripening-associated CW disassembly. To determine whether endogenous CW disassembly influences the ripening-regulated increase in necrotropic pathogen susceptibility, B. cinerea susceptibility was assessed in transgenic fruit with suppressed polygalacturonase (LePG) and expansin (LeExp1) expression. Suppression of either LePG or LeExp1 alone did not reduce susceptibility but simultaneous suppression of both dramatically reduced the susceptibility of ripening fruit to B. cinerea, as measured by fungal biomass accumulation and by macerating lesion development. These results demonstrate that altering endogenous plant CW disassembly during ripening influences the course of infection by B. cinerea, perhaps by changing the structure or the accessibility of CW substrates to pathogen CW-degrading enzymes. Recognition of the role of ripening-associated CW metabolism in postharvest pathogen susceptibility may be useful in the design and development of strategies to limit pathogen losses during fruit storage, handling, and distribution.
format Articulo
Articulo
author Cantu, D.
Vicente, Ariel Roberto
Greve, L. C.
Dewey, F. M.
Bennett, A. B.
Labavitch, J. M.
Powell, A. L.T.
author_facet Cantu, D.
Vicente, Ariel Roberto
Greve, L. C.
Dewey, F. M.
Bennett, A. B.
Labavitch, J. M.
Powell, A. L.T.
author_sort Cantu, D.
title The intersection between cell wall disassembly, ripening, and fruit susceptibility to Botrytis cinerea
title_short The intersection between cell wall disassembly, ripening, and fruit susceptibility to Botrytis cinerea
title_full The intersection between cell wall disassembly, ripening, and fruit susceptibility to Botrytis cinerea
title_fullStr The intersection between cell wall disassembly, ripening, and fruit susceptibility to Botrytis cinerea
title_full_unstemmed The intersection between cell wall disassembly, ripening, and fruit susceptibility to Botrytis cinerea
title_sort intersection between cell wall disassembly, ripening, and fruit susceptibility to botrytis cinerea
publishDate 2008
url http://sedici.unlp.edu.ar/handle/10915/84282
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