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Int. J. Mol. Sci. 2014, 15(10), 17396-17410; doi:10.3390/ijms151017396

Sequencing and Transcriptional Analysis of the Biosynthesis Gene Cluster of Abscisic Acid-Producing Botrytis cinerea

Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
Henan Key Laboratory of Microbial Engineering, Institute of Biology, Henan Academy of Sciences, Zhengzhou 450008, China
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Received: 26 May 2014 / Revised: 18 July 2014 / Accepted: 2 September 2014 / Published: 29 September 2014
(This article belongs to the Section Biochemistry, Molecular and Cellular Biology)
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Botrytis cinerea is a model species with great importance as a pathogen of plants and has become used for biotechnological production of ABA. The ABA cluster of B. cinerea is composed of an open reading frame without significant similarities (bcaba3), followed by the genes (bcaba1 and bcaba2) encoding P450 monooxygenases and a gene probably coding for a short-chain dehydrogenase/reductase (bcaba4). In B. cinerea ATCC58025, targeted inactivation of the genes in the cluster suggested at least three genes responsible for the hydroxylation at carbon atom C-1' and C-4' or oxidation at C-4' of ABA. Our group has identified an ABA-overproducing strain, B. cinerea TB-3-H8. To differentiate TB-3-H8 from other B. cinerea strains with the functional ABA cluster, the DNA sequence of the 12.11-kb region containing the cluster of B. cinerea TB-3-H8 was determined. Full-length cDNAs were also isolated for bcaba1, bcaba2, bcaba3 and bcaba4 from B. cinerea TB-3-H8. Sequence comparison of the four genes and their flanking regions respectively derived from B. cinerea TB-3-H8, B05.10 and T4 revealed that major variations were located in intergenic sequences. In B. cinerea TB-3-H8, the expression profiles of the four function genes under ABA high-yield conditions were also analyzed by real-time PCR. View Full-Text
Keywords: Botrytis cinerea; abscisic acid; comparative sequence analysis; real-time PCR Botrytis cinerea; abscisic acid; comparative sequence analysis; real-time PCR

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Gong, T.; Shu, D.; Yang, J.; Ding, Z.-T.; Tan, H. Sequencing and Transcriptional Analysis of the Biosynthesis Gene Cluster of Abscisic Acid-Producing Botrytis cinerea. Int. J. Mol. Sci. 2014, 15, 17396-17410.

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