In vitro transient expression system of latex C-serum was used for analysis of hevein promoter in response to abscisic acid in Hevea brasiliensis

Journal of Integrative Plant Biology
Xiao-Wen Fei, Xiao-Dong Deng

Abstract

Hevein has been found to be an essential element in coagulation of rubber particles in latex of rubber trees. In a previous study, we cloned a 1,241-bp fragment of a 5' upstream region of the hevein gene by genome walking. This fragment was analyzed by a 5' end nested deletion method in the present study, fused with a uidA (gus) gene to produce a series of tested constructs, which were transferred into C-serum of latex and the Gus activities were detected. Results showed that the fragment from -749 to -292 was sufficient for expression of gus gene in latex, and the fragment from -292 to -168 was crucial in response to abscisic acid inducement. In a transient transgenic test of rubber leaf with particle bombardment, construct Hev749 conferred gus-specific expression in veins, in which the latex tubes mainly distributed. This implies that the fragment from -749 to -292 was laticiferous-specific.

References

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Citations

Jun 19, 2016·Biochimie·Karine BerthelotSophie Lecomte

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