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Int. J. Mol. Sci. 2015, 16(2), 4136-4149; doi:10.3390/ijms16024136

Isolation and Molecular Characterization of 1-Aminocyclopropane-1-carboxylic Acid Synthase Genes in Hevea brasiliensis

1
Key Laboratory of Tropical Crop Biotechnology, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
2
Hainan Academy of Agricultural Sciences, Haikou 571100, China
*
Author to whom correspondence should be addressed.
Academic Editor: Marcello Iriti
Received: 31 October 2014 / Accepted: 6 February 2015 / Published: 16 February 2015
(This article belongs to the Section Biochemistry, Molecular and Cellular Biology)
View Full-Text   |   Download PDF [2083 KB, uploaded 16 February 2015]   |  

Abstract

Ethylene is an important factor that stimulates Hevea brasiliensis to produce natural rubber. 1-Aminocyclopropane-1-carboxylic acid synthase (ACS) is a rate-limiting enzyme in ethylene biosynthesis. However, knowledge of the ACS gene family of H. brasiliensis is limited. In this study, nine ACS-like genes were identified in H. brasiliensis. Sequence and phylogenetic analysis results confirmed that seven isozymes (HbACS1–7) of these nine ACS-like genes were similar to ACS isozymes with ACS activity in other plants. Expression analysis results showed that seven ACS genes were differentially expressed in roots, barks, flowers, and leaves of H. brasiliensis. However, no or low ACS gene expression was detected in the latex of H. brasiliensis. Moreover, seven genes were differentially up-regulated by ethylene treatment. These results provided relevant information to help determine the functions of the ACS gene in H. brasiliensis, particularly the functions in regulating ethylene stimulation of latex production. View Full-Text
Keywords: Hevea brasiliensis; 1-aminocyclopropane-1-carboxylic acid synthase; gene expression; ethylene Hevea brasiliensis; 1-aminocyclopropane-1-carboxylic acid synthase; gene expression; ethylene
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Zhu, J.-H.; Xu, J.; Chang, W.-J.; Zhang, Z.-L. Isolation and Molecular Characterization of 1-Aminocyclopropane-1-carboxylic Acid Synthase Genes in Hevea brasiliensis. Int. J. Mol. Sci. 2015, 16, 4136-4149.

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