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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Analysis of Papaya Cell Wall-Related Genes during Fruit Ripening Indicates a Central Role of Polygalacturonases during Pulp Softening

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Author(s):
Fabi, Joao Paulo [1, 2] ; Broetto, Sabrina Garcia [1] ; Garcia Leme da Silva, Sarah Ligia [1] ; Zhong, Silin [3] ; Lajolo, Franco Maria [1, 2] ; Oliveira do Nascimento, Joao Roberto [1, 2]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, FCF, Dept Food Sci & Expt Nutr, Sao Paulo - Brazil
[2] Univ Sao Paulo, NAPAN Food & Nutr Res Ctr, Sao Paulo - Brazil
[3] Chinese Univ Hong Kong, Sch Life Sci, State Key Lab Agrobiotechnol, Hong Kong, Hong Kong - Peoples R China
Total Affiliations: 3
Document type: Journal article
Source: PLoS One; v. 9, n. 8 AUG 27 2014.
Web of Science Citations: 32
Abstract

Papaya (Carica papaya L.) is a climacteric fleshy fruit that undergoes dramatic changes during ripening, most noticeably a severe pulp softening. However, little is known regarding the genetics of the cell wall metabolism in papayas. The present work describes the identification and characterization of genes related to pulp softening. We used gene expression profiling to analyze the correlations and co-expression networks of cell wall-related genes, and the results suggest that papaya pulp softening is accomplished by the interactions of multiple glycoside hydrolases. The polygalacturonase cpPG1 appeared to play a central role in the network and was further studied. The transient expression of cpPG1 in papaya results in pulp softening and leaf necrosis in the absence of ethylene action and confirms its role in papaya fruit ripening. (AU)

FAPESP's process: 02/12452-9 - Carbohydrate metabolism during fruit ripening: a functional genomics approach
Grantee:Franco Maria Lajolo
Support Opportunities: Research Projects - Thematic Grants