Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 408335
Title Transcriptomic profiling of citrus fruit peel tissues reveals fundamental effects of phenylpropanoids and ethylene on induced resistance
Author(s) Ballester Frutos, A.R.; Lafuente, M.T.; Forment, J.; Gadea, J.; Vos, C.H.R. de; Bovy, A.G.; Gonzalez-Candelas, L.
Source Molecular Plant Pathology 12 (2011)9. - ISSN 1464-6722 - p. 879 - 897.
Department(s) PRI Biodiversity and Breeding
PRI BIOS Applied Metabolic Systems
WUR Plant Breeding
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) penicillium-digitatum sacc - phenylalanine ammonia-lyase - plant defense responses - microarray data - acquired-resistance - decay resistance - gene-expression - uv-irradiation - infection - grapefruit
Abstract Penicillium spp. are the major postharvest pathogens of citrus fruit in Mediterranean climatic regions. The induction of natural resistance constitutes one of the most promising alternatives to avoid the environmental contamination and health problems caused by chemical fungicides. To understand the bases of the induction of resistance in citrus fruit against Penicillium digitatum, we have used a 12k citrus cDNA microarray to study transcriptional changes in the outer and inner parts of the peel (flavedo and albedo, respectively) of elicited fruits. The elicitor treatment led to an over-representation of biological processes associated with secondary metabolism, mainly phenylpropanoids and cellular amino acid biosynthesis and methionine metabolism, and the down-regulation of genes related to biotic and abiotic stresses. Among phenylpropanoids, we detected the over-expression of a large subset of genes important for the synthesis of flavonoids, coumarins and lignin, especially in the internal tissue. Furthermore, these genes and those of ethylene biosynthesis showed the highest induction. The involvement of both phenylpropanoid and ethylene pathways was confirmed by examining changes in gene expression and ethylene production in elicited citrus fruit. Therefore, global results indicate that secondary metabolism, mainly phenylpropanoids, and ethylene play important roles in the induction of resistance in citrus fruit.
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