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首页> 外文期刊>Journal of Agricultural and Food Chemistry >NEW C-4''-HYDROXY DERIVATIVES OF MAYSIN AND 3'-METHOXYMAYSIN ISOLATED FROM CORN SILKS (ZEA MAYS)
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NEW C-4''-HYDROXY DERIVATIVES OF MAYSIN AND 3'-METHOXYMAYSIN ISOLATED FROM CORN SILKS (ZEA MAYS)

机译：从玉米丝中分离出来的新的C-4''-羟基羟基木素和3'-羟基羟基木素

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Reduced derivatives of maysin [2 ''-O-alpha-L-rhamnosyl-6-C-(6-deoxy-xylo-hexos-4-ulosyl)luteolin] and 3'-methoxymaysin have been isolated and identified from several corn (Zea mays L.) inbreds. These include 2 ''-O-alpha-L-rhamnasyl-6-C-quinovosylluteolin (equatorial 4 ''-OH-maysin, eq-4 ''-OH-maysin), 2 ''-O-alpha-L-rhamnosyl-6-C-fucosylluteolin (axial 4 ''-OH-maysin, ax-4 ''-OH-maysin), and 2 ''-O-alpha-L-rhamnosyl-6-C-fucosyl-3'-methoxyluteolin (ax-4 ''-OH-3'-methoxymaysin). In addition to maysin and 3'-methoxymaysin, inbred Tx501 contains minor amounts of ax-4 ''-OH-maysin and ax-4 ''-OH-3'methoxymaysin. Corn Lines A103, GE275, ESDJ1, and CML131 contained relatively large levels of both ax-4 ''-OH-maysin and eq-4 ''-OH-maysin. Synthetic 4 ''-OH-maysin (obtained by NaBH4 reduction of maysin) was tested for growth inhibition of corn earworm (Helicoverpa tea Boddie) larvae in a laboratory bioassay and found to be almost as active as maysin, suggesting that incorporation by breeders of these compounds into silks could enhance the resistance of corn to corn earworm larvae.
机译：从数个玉米中分离并鉴定出还原的maysin [2'-O-α-L-鼠李糖基-6-C-（6-脱氧-xylo-hexos-4-ulosyl）木犀草素]和3'-甲氧基maysin的衍生物。玉米（Zea mays L.）近交系。这些包括2''-O-α-L-鼠李糖基-6-C-喹啉基花青素（赤道4''-OH-maysin，eq-4''-OH-maysin），2''-O-α-L-鼠李糖基-6-C-岩藻糖蛋白（轴向4''-OH-maysin，ax-4''-OH-maysin和2''-O-α-L-鼠李糖基-6-C-岩藻糖基-3'-甲氧基木犀草素（ax-4''-OH-3'-甲氧基maysin）。除了maysin和3'-甲氧基maysin，近交Tx501还包含少量的ax-4''-OH-maysin和ax-4''-OH-3'甲氧基maysin。玉米A103，GE275，ESDJ1和CML131品系都含有相对大量的ax-4''-OH-maysin和eq-4''-OH-maysin。在实验室生物测定法中测试了合成的4''-OH-maysin（通过NaBH4还原maysin获得的）对玉米ear虫（Helicoverpa tea Boddie）幼虫的生长抑制作用，发现其活性与maysin几乎一样，这表明育种者将其掺入这些化合物变成丝可以增强玉米对玉米corn虫幼虫的抵抗力。

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