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  Demethylation of oligogalacturonides by FaPE1 in the fruits of the wild strawberry Fragaria vesca triggers metabolic and transcriptional changes associated with defence and development of the fruit

Osorio, S., Bombarely, A., Giavalisco, P., Usadel, B., Stephens, C., Araguez, I., et al. (2011). Demethylation of oligogalacturonides by FaPE1 in the fruits of the wild strawberry Fragaria vesca triggers metabolic and transcriptional changes associated with defence and development of the fruit. Journal of Experimental Botany, 62(8), 2855-2873. doi:10.1093/jxb/erq465.

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Osorio, S.1, Author              
Bombarely, A.2, Author
Giavalisco, P.3, 4, Author              
Usadel, B.5, Author              
Stephens, C.2, Author
Araguez, I.2, Author
Medina-Escobar, N.2, Author
Botella, M. A.2, Author
Fernie, A. R.1, Author              
Valpuesta, V.2, Author
Affiliations:
1Central Metabolism, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753339              
2External Organizations, ou_persistent22              
3Experimental Systems Biology, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753342              
4Small Molecules, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, Am Mühlenberg 1, 14476 Potsdam-Golm, DE, ou_1753340              
5Integrative Carbon Biology, Department Stitt, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753329              

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Free keywords: defence signalling fruit oligogalacturonides pectin methyl esterase strawberry cell-wall botrytis-cinerea pseudomonas-syringae mass-spectrometry x ananassa differential expression contrasting firmness ripening strawberry signal-transduction disease resistance
 Abstract: Ectopic expression of the strawberry (Fragariaxananassa) gene FaPE1 encoding pectin methyl esterase produced in the wild species Fragaria vesca partially demethylated oligogalacturonides (OGAs), which conferred partial resistance of ripe fruits to the fungus Botrytis cinerea. Analyses of metabolic and transcriptional changes in the receptacle of the transgenic fruits revealed channelling of metabolites to aspartate and aromatic amino acids as well as phenolics, flavanones, and sesquiterpenoids, which was in parallel with the increased expression of some genes related to plant defence. The results illustrate the changes associated with resistance to B. cinerea in the transgenic F. vesca. These changes were accompanied by a significant decrease in the auxin content of the receptacle of the ripe fruits of transgenic F. vesca, and enhanced expression of some auxin-repressed genes. The role of these OGAs in fruit development was revealed by the larger size of the ripe fruits in transgenic F. vesca. When taken together these results show that in cultivated F. ananassa FaPE1 participates in the de-esterification of pectins and the generation of partially demethylated OGAs, which might reinforce the plant defence system and play an active role in fruit development.

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Language(s): eng - English
 Dates: 2011-01-272011
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: ISI:000290813300031
DOI: 10.1093/jxb/erq465
ISSN: 0022-0957
URI: ://000290813300031http://jxb.oxfordjournals.org/content/62/8/2855.full.pdf
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Title: Journal of Experimental Botany
  Other : J. Exp. Bot
Source Genre: Journal
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Publ. Info: Oxford : Oxford University Press [etc.]
Pages: - Volume / Issue: 62 (8) Sequence Number: - Start / End Page: 2855 - 2873 Identifier: ISSN: 0022-0957
CoNE: https://pure.mpg.de/cone/journals/resource/954925413883