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Involvement of Ethylene in the Latex Metabolism and Tapping Panel Dryness of Hevea brasiliensis

Putranto, Riza-Arief and Herlinawati, Eva and Rio, Maryannick and Leclercq, Julie and Piyatrakul, Piyanuch and Gohet, Eric and Sanier, Christine and Oktavia, Fetrina and Pirrello, Julien and Kuswanhadi, Kuswanhadi and Montoro, Pascal Involvement of Ethylene in the Latex Metabolism and Tapping Panel Dryness of Hevea brasiliensis. (2015) International Journal of Molecular Sciences, 16 (8). 17885-17908. ISSN 1661-6596

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Official URL: http://dx.doi.org/10.3390/ijms160817885

Abstract

Ethephon, an ethylene releaser, is used to stimulate latex production in Hevea brasiliensis. Ethylene induces many functions in latex cells including the production of reactive oxygen species (ROS). The accumulation of ROS is responsible for the coagulation of rubber particles in latex cells, resulting in the partial or complete stoppage of latex flow. This study set out to assess biochemical and histological changes as well as changes in gene expression in latex and phloem tissues from trees grown under various harvesting systems. The Tapping Panel Dryness (TPD) susceptibility of Hevea clones was found to be related to some biochemical parameters, such as low sucrose and high inorganic phosphorus contents. A high tapping frequency and ethephon stimulation induced early TPD occurrence in a high latex metabolism clone and late occurrence in a low latex metabolism clone. TPD-affected trees had smaller number of laticifer vessels compared to healthy trees, suggesting a modification of cambial activity. The differential transcript abundance was observed for twenty-seven candidate genes related to TPD occurrence in latex and phloem tissues for ROS-scavenging, ethylene biosynthesis and signalling genes. The predicted function for some Ethylene Response Factor genes suggested that these candidate genes should play an important role in regulating susceptibility to TPD.

Item Type:Article
Additional Information:Thanks to Multidisciplinary Digital Publishing Institute. The definitive version is available at http://www.mdpi.com/ The original PDF of the article can be found at International Journal of Molecular Sciences website : http://www.mdpi.com/1422-0067/16/8/17885
HAL Id:hal-01264334
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre de Coopération Internationale en Recherche Agronomique - CIRAD (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Other partners > Indonesian Research Institute for Biotechnology and Bioindustry - IRIBB (INDONESIA)
Other partners > Indonesian Rubber Research Institute - IRRI (INDONESIA)
Other partners > Montpellier SupAgro (FRANCE)
Other partners > Rubber Research Institute Of Thailand - RRIT (THAILAND)
Laboratory name:
Funders:
Ann Cuypers
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Deposited By: Brigitte LAFFORGUE
Deposited On:11 Jan 2016 14:44

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