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Chemical Compound Review

Maysin     2-(3,4-dihydroxyphenyl)-5,7- dihydroxy-6-[4...

Synonyms: AG-K-43337, AC1Q6BBJ, CTK2H8692, AR-1D4655, AC1L4Y2D, ...
 
 
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High impact information on Maysin

  • Quantitative trait loci and metabolic pathways: genetic control of the concentration of maysin, a corn earworm resistance factor, in maize silks [1].
  • We determined silk maysin concentrations and restriction fragment length polymorphism genotypes at flavonoid pathway loci or linked markers for 285 F2 plants derived from the cross of lines GT114 and GT119 [1].
  • C-glycosyl flavones in maize silks confer resistance (i.e., antibiosis) to corn earworm (Helicoverpa zea [Boddie]) larvae and are distinguished by their B-ring substitutions, with maysin and apimaysin being the di- and monohydroxy B-ring forms, respectively [2].
  • We conclude that both p1 and p2 induce maysin biosynthesis in silk, although the two genes differ in their expression and pigmentation effects in other tissues [3].
  • Because the p locus has often been a major QTL for maysin and CGA and has exhibited epistatic interactions with a1, c2, and whp1, association analysis was conditioned on the p genotype [4].
 

Biological context of Maysin

 

Associations of Maysin with other chemical compounds

  • Larvae of the Old World corn earworm, Helicoverpa armigera (Hübner), were fed diets containing lyophilized silks from maize genotypes expressing varying levels of maysin, a flavone glycoside known to be toxic to the New World corn earworm, Helicoverpa zea Boddie [9].
 

Gene context of Maysin

  • The maize p1 locus coincides with a major QTL (quantitative trait locus) determining levels of maysin, a C-glycosyl flavone that deters feeding by corn ear-worm [3].
  • QTL analysis has also implicated the dihydroflavanol reductase (DFR; E.C. no. 1.1.1.219) locus anthocyaninless1 (a1) and the duplicate chalcone synthase (CHS; E.C. no. 2.3.1.74) loci colorless2 (c2) and white pollen1 (whp1) as genes underlying QTL for maysin and/or CGA synthesis [4].

References

  1. Quantitative trait loci and metabolic pathways: genetic control of the concentration of maysin, a corn earworm resistance factor, in maize silks. Byrne, P.F., McMullen, M.D., Snook, M.E., Musket, T.A., Theuri, J.M., Widstrom, N.W., Wiseman, B.R., Coe, E.H. Proc. Natl. Acad. Sci. U.S.A. (1996) [Pubmed]
  2. Genetic mechanisms underlying apimaysin and maysin synthesis and corn earworm antibiosis in maize (Zea mays L.). Lee, E.A., Byrne, P.F., McMullen, M.D., Snook, M.E., Wiseman, B.R., Widstrom, N.W., Coe, E.H. Genetics (1998) [Pubmed]
  3. A maize QTL for silk maysin levels contains duplicated Myb-homologous genes which jointly regulate flavone biosynthesis. Zhang, P., Wang, Y., Zhang, J., Maddock, S., Snook, M., Peterson, T. Plant Mol. Biol. (2003) [Pubmed]
  4. Association analysis of candidate genes for maysin and chlorogenic acid accumulation in maize silks. Szalma, S.J., Buckler, E.S., Snook, M.E., McMullen, M.D. Theor. Appl. Genet. (2005) [Pubmed]
  5. The genetic basis of C-glycosyl flavone B-ring modification in maize (Zea mays L.) silks. Cortés-Cruz, M., Snook, M., McMullen, M.D. Genome (2003) [Pubmed]
  6. Salmon silk genes contribute to the elucidation of the flavone pathway in maize (Zea mays L.). McMullen, M.D., Kross, H., Snook, M.E., Cortés-Cruz, M., Houchins, K.E., Musket, T.A., Coe, E.H. J. Hered. (2004) [Pubmed]
  7. Restriction fragment length polymorphism markers associated with silk maysin, antibiosis to corn earworm (Lepidoptera: Noctuidae) larvae, in a dent and sweet corn cross. Guo, B.Z., Zhang, Z.J., Li, R.G., Widstrom, N.W., Snook, M.E., Lynch, R.E., Plaisted, D. J. Econ. Entomol. (2001) [Pubmed]
  8. Transformation of maize with the p1 transcription factor directs production of silk maysin, a corn earworm resistance factor, in concordance with a hierarchy of floral organ pigmentation. Cocciolone, S.M., Nettleton, D., Snook, M.E., Peterson, T. Plant Biotechnol. J. (2005) [Pubmed]
  9. Effect of maysin on wild-type, deltamethrin-resistant, and Bt-resistant Helicoverpa armigera (Lepidoptera: Noctuidae). Rector, B.G., Liang, G., Guo, Y. J. Econ. Entomol. (2003) [Pubmed]
 
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