Transcriptome and metabolite analyses in Azadirachta indica: identification of genes involved in biosynthesis of bioactive triterpenoids

Bhambhani S, Lakhwani D, Gupta P, Pandey A, Dhar YV, Bag SK, Asif MH, Trivedi PK (2017)
SCIENTIFIC REPORTS 7: 5043.

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Abstract
Azadirachta indica A. Juss, commonly known as Neem, is the reservoir of triterpenoids of economic importance. Metabolite analysis of different developmental stages of leaf and fruit suggests tissue-specific accumulation of the major triterpenoids in this important tree. Though biosynthesis of these complex molecules requires substrate flux from the isoprenoid pathway, enzymes involved in late biosynthetic steps remain uncharacterized. We established and analyzed transcriptome datasets from leaf and fruit and identified members of gene families involved in intermediate steps of terpenoid backbone biosynthesis and those related to secondary transformation leading to the tissue-specific triterpenoid biosynthesis. Expression analysis suggests differential expression of number of genes between leaf and fruit and probable participation in the biosynthesis of fruit-specific triterpenoids. Genome-wide analysis also identified members of gene families putatively involved in secondary modifications in late biosynthetic steps leading to the synthesis of highly oxygenated triterpenoids. Expression and molecular docking analyses suggest involvement of specific members of CYP450 family in secondary modifications for the biosynthesis of bioactive triterpenoids. This study generated rich genomic resource and identified genes involved in biosynthesis of important molecules, which will aid in the advancement of tools for functional genomics and elucidation of the biosynthesis of triterpenoid from this important tree.
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Bhambhani S, Lakhwani D, Gupta P, et al. Transcriptome and metabolite analyses in Azadirachta indica: identification of genes involved in biosynthesis of bioactive triterpenoids. SCIENTIFIC REPORTS. 2017;7: 5043.
Bhambhani, S., Lakhwani, D., Gupta, P., Pandey, A., Dhar, Y. V., Bag, S. K., Asif, M. H., et al. (2017). Transcriptome and metabolite analyses in Azadirachta indica: identification of genes involved in biosynthesis of bioactive triterpenoids. SCIENTIFIC REPORTS, 7, 5043. doi:10.1038/s41598-017-05291-3
Bhambhani, S., Lakhwani, D., Gupta, P., Pandey, A., Dhar, Y. V., Bag, S. K., Asif, M. H., and Trivedi, P. K. (2017). Transcriptome and metabolite analyses in Azadirachta indica: identification of genes involved in biosynthesis of bioactive triterpenoids. SCIENTIFIC REPORTS 7:5043.
Bhambhani, S., et al., 2017. Transcriptome and metabolite analyses in Azadirachta indica: identification of genes involved in biosynthesis of bioactive triterpenoids. SCIENTIFIC REPORTS, 7: 5043.
S. Bhambhani, et al., “Transcriptome and metabolite analyses in Azadirachta indica: identification of genes involved in biosynthesis of bioactive triterpenoids”, SCIENTIFIC REPORTS, vol. 7, 2017, : 5043.
Bhambhani, S., Lakhwani, D., Gupta, P., Pandey, A., Dhar, Y.V., Bag, S.K., Asif, M.H., Trivedi, P.K.: Transcriptome and metabolite analyses in Azadirachta indica: identification of genes involved in biosynthesis of bioactive triterpenoids. SCIENTIFIC REPORTS. 7, : 5043 (2017).
Bhambhani, Sweta, Lakhwani, Deepika, Gupta, Parul, Pandey, Ashutosh, Dhar, Yogeshwar Vikram, Bag, Sumit Kumar, Asif, Mehar Hasan, and Trivedi, Prabodh Kumar. “Transcriptome and metabolite analyses in Azadirachta indica: identification of genes involved in biosynthesis of bioactive triterpenoids”. SCIENTIFIC REPORTS 7 (2017): 5043.
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