Isolation of a (+)- delta-cadinene synthase gene CAD1-A and analysis of its expression pattern in seedlings ofGossypium arboreum L

Science in China. Series C, Life Sciences
W Q LiangP Heinstein

Abstract

The cotton sesquiterpene cyclase, (+)-delta-cadinene synthase, is encoded by a gene family, which can be divided into two subfamilies:CAD1-A and CAD1-C. The geneCAD1-A was isolated fromG. arboreum. In situ hybridization performed on seven-day-old cotton seedlings localized transcripts of both the CAD1 -A and CAD1 -C mainly in lateral root primordium and apical ground meristem, vascular tissues of emerging lateral roots, and also in procambium and some subepidermal cells of the hypocotyl. The CAD1 -A promoter showed a similar tissue-specificity in transgenic tobacco plants. Histochemistry showed occurrence of sesquiterpene aldehydes in outer cells of the lateral root tips, as well as in pigment glands. The CAD1 gene expression in G.arboreum seedlings and the spatial pattern of sesquiterpene biosynthesis constitute a chemical defense machinery in cotton seedlings.

References

Nov 15, 1992·Proceedings of the National Academy of Sciences of the United States of America·P J Facchini, J Chappell
Aug 1, 1994·PCR Methods and Applications·D Alfandari, T Darribère
May 16, 1998·Proceedings of the National Academy of Sciences of the United States of America·J BohlmannR Croteau
Jan 1, 1995·Plant Physiology·J. Chappell

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Citations

Oct 1, 2013·Phytochemistry·Chang-Qing YangLing-Jian Wang
Jun 2, 2011·PLoS Neglected Tropical Diseases·Debalina Ray, David L Williams

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