The secondary laticifer differentiation in rubber tree is induced by trichostatin A, an inhibitor of histone acetylation

Abstract

The secondary laticifer, a specific tissue in the secondary phloem of rubber tree, is differentiated from the vascular cambia. The number of the secondary laticifer in the trunk bark of rubber tree is positively correlated with rubber yield. Although jasmonates have been demonstrated to be crucial in the regulation of secondary laticifer differentiation, the mechanism for the jasmonate-induced secondary laticifer differentiation remains to be elucidated. By using an experimental morphological technique, the present study revealed that trichostatin A (TSA), an inhibitor of histone deacetylation, could induce the secondary laticifer differentiation in a concentration-dependent manner. The results suggest that histone acetylation is essential for the secondary laticifer differentiation in rubber tree.

Keywords

Hevea brasiliensis / histone acetylation / laticifer differentiation / trichostatin / vascular cambia

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (31300504), Fundamental Research Funds for Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences (1630022016006) and the Earmarked Fund for China Agriculture Research System (CARS-34-GW1).

Compliance with ethics guidelines

Shixin Zhang, Shaohua Wu, and Weimin Tian declare that they have no conflict of interest or financial conflicts to disclose.

This article does not contain any studies with human or animal subjects performed by any of the authors.

RIGHTS & PERMISSIONS

The Author(s) 2016. Published by Higher Education Press. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0)