Publication: Ethylene stimulation of latex yield depends on the expression of a sucrose transporter (HbSUT1B) in rubber tree (Hevea brasiliensis)
Issued Date
2010-12-01
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ISSN
17584469
0829318X
0829318X
Other identifier(s)
2-s2.0-78649627182
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Mahidol University
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SCOPUS
Bibliographic Citation
Tree Physiology. Vol.30, No.12 (2010), 1586-1598
Suggested Citation
Anaïs Dusotoit-Coucaud, Panida Kongsawadworakul, Laurence Maurousset, Unshira Viboonjun, Nicole Brunel, Valérie Pujade-Renaud, Hervé Chrestin, Soulaïman Sakr Ethylene stimulation of latex yield depends on the expression of a sucrose transporter (HbSUT1B) in rubber tree (Hevea brasiliensis). Tree Physiology. Vol.30, No.12 (2010), 1586-1598. doi:10.1093/treephys/tpq088 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/28429
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Title
Ethylene stimulation of latex yield depends on the expression of a sucrose transporter (HbSUT1B) in rubber tree (Hevea brasiliensis)
Abstract
Hevea brasiliensis is an important industrial crop for natural rubber production. Latex biosynthesis occurs in the cytoplasm of highly specialized latex cells and requires sucrose as the unique precursor. Ethylene stimulation of latex production results in high sugar flow from the surrounding cells of inner bark towards the latex cells. The aim of this work was to understand the role of seven sucrose transporters (HbSUTs) and one hexose transporter (HbHXT1) in this process. Two Hevea clones were used: PB217 and PB260, respectively described as high and low yielding clones. The expression pattern of these sugar transporters (HbSUTs and HbHXT1) was monitored under different physiological conditions and found to be maximal in latex cells. HbSUT1, one of the most abundant isoforms, displayed the greatest response to ethylene treatment. In clone PB217, ethylene treatment led to a higher accumulation of HbSUT1B in latex cells than in the inner bark tissues. Conversely, stronger expression of HbSUT1B was observed in inner bark tissues than in latex cells of PB260. A positive correlation with HbSUT1B transcript accumulation and increased latex production was further supported by its lower expression in latex cells of the virgin clone PB217. © The Author 2010. Published by Oxford University Press. All rights reserved.