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245 1 0 _aStress responsiveness of vindoline accumulation in Catharanthus roseus leaves is mediated through co.expression of allene oxide cyclase with pathway genes
490 0 _vProtoplasma, 259(3), p.755-773, 2022
520 3 _aVindoline is an important alkaloid produced in Catharanthus roseus leaves. It is the more important monomer of the scarce and costly anticancer bisindole alkaloids, vincristine, and vinblastine, as unlike catharanthine (the other monomer), its biosynthesis is restricted to the leaves. Here, biotic (bacterial endophyte, phytoplasma, virus)and abiotic (temperature, salinity, SA, MeJa)factors were studied for their effect on vindoline accumulation in C. roseus. Variations in vindoline pathway-related gene expression were reflected in changes in vindoline content. Since allene oxide cyclase (CrAOC)is involved in jasmonate biosynthesis and MeJa modulates many vindoline pathway genes, the correlation between CrAOC expression and vindoline content was studied. It was taken up for full-length cloning, tissue-specific expression profiling, in silico analyses, and upstream genomic region analysis for cis-regulatory elements. Co-expression analysis of CrAOC with vindoline metabolism-related genes under the influence of aforementioned abiotic/biotic factors indicated its stronger direct correlation with the tabersonine-to-vindoline genes (t16h, omt, t3o, t3r, nmt, d4h, dat)as compared to the pre-tabersonine genes (tdc, str, sgd). Its expression was inversely related to that of downstream-acting peroxidase (prx)(except under temperature stress). Direct/positive relationship of CrAOC expression with vindoline content established it as a key gene modulating vindoline accumulation in C. roseus.
650 1 4 _aABIOTIC/BIOTIC FACTORS
650 1 4 _aBISINDOLE ALKALOIDS
650 1 4 _aCO-EXPRESSION ANALYSIS
650 1 4 _aJASMONATE
650 1 4 _aVINDOLINE METABOLISM
700 1 2 _aMall, M.
700 1 2 _aShanker, K.
700 1 2 _aSamad, A.
700 1 2 _aKalra, A.
700 1 2 _aSundaresan, V.
700 1 2 _aShukla, A. K.
856 4 0 _uhttps://drive.google.com/file/d/1DzdTaRhyeSNZOURdkDXpcaoUKws9v_NZ/view?usp=drivesdk
_zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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