PHYTOALEXIN ACCUMULATION IN SORGHUM - IDENTIFICATION OF AN APIGENINIDIN ACYL ESTER
PHYTOALEXIN ACCUMULATION IN SORGHUM - IDENTIFICATION OF AN APIGENINIDIN ACYL ESTER
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DOI：
10.1016/0885-5765(90)90067-8
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发表时间：
1990-05-01
影响因子：
2.7
通讯作者：
NICHOLSON, RL
中科院分区：
文献类型：
--
作者：
HIPSKIND, JD;HANAU, R;NICHOLSON, RL
一种新的3-脱氧花色素植物抗毒素在高粱叶片和中胚轴中的积累被证明发生在接种对高粱致病的禾生炭疽菌（Colletotrichum graminicola）的分离物之后。仅对玉米致病的禾生菌，以及玉米长蠕孢菌（Helminthosporum maydis）的分离物（高粱的非病原体）。发现该化合物是阿拉伯糖基-5-O-芹菜素的咖啡酸酯，从未出现在未接种的组织中。将该化合物与已鉴定的两种植物抗毒素（芹菜素和木犀草素）的杀菌活性进行比较，结果表明，这三种化合物对C.浓度低于10 μ M的草生菌
The accumulation of a new 3-deoxyanthocyanidin phytoalexin in sorghum leaves and mesocotyls was demonstrated to occur following inoculation with an isolate of Colletotrichum graminicola pathogenic to sorghum, an isolate of C. graminicola pathogenic only to corn, and an isolate of Helminthosporum maydis (a nonpathogen of sorghum). The compound was found to be a caffeic acid ester of arabinosyl-5-O-apigeninidin and was never present in uninoculated tissues. Comparison of the fungitoxicity of the compound with that of two phytoalexins identified previously (apigeninidin and luteolinidin) showed that all three of the compounds exhibited toxicity to C. graminicola at concentrations of less than 10 .mu.M.