野生番茄 Lycopersicon pennellii 腺毛分泌物中的葡萄糖酯对蚜虫的驱避作用。

Aphid deterrence by glucose esters in glandular trichome exudate of the wild tomato,Lycopersicon pennellii.

机构信息

Department of Plant Breeding and Biometry, Cornell University, 14853, Ithaca, New York.

出版信息

J Chem Ecol. 1989 Jul;15(7):2135-47. doi: 10.1007/BF01207444.

DOI:10.1007/BF01207444

Abstract

Settling of the potato aphid,Macrosiphum euphorbiae, on feeding membranes was deterred by methanolic leaf rinses ofLycopersicon pennellii, or of its F1 with tomato,L. esculentum. The active compounds in theL. pennellii rinsates were identified as 2,3,4-tri-O-acylglucoses bearing short to medium chain length fatty acids. These compounds are localized in the glandular exudate of the type IV trichomes and may accumulate to levels in excess of 400 μg/cm(2). In choice assays, purified glucose esters fromL. pennellii reduced aphid settling at concentrations as low as 25 μg/cm(2); at concentrations of 150 μg/cm(2) or more, all aphids avoided treated areas. Glucose esters were also active in deterring aphid settling in no-choice assays. At 100 μg/ cm(2), these esters resulted in increased levels of mortality after 48 hr.

摘要

马铃薯蚜在取食膜上的定殖受到番茄的甲醇叶冲洗液（Lycopersicon pennellii）或其与番茄的 F1（L. esculentum）的抑制。L. pennellii 冲洗液中的活性化合物被鉴定为带有短至中链长脂肪酸的 2,3,4-三-O-酰基葡萄糖。这些化合物定位于 IV 型毛状体的腺分泌物中，可能积累到超过 400μg/cm(2)的水平。在选择试验中，从 L. pennellii 中纯化的葡萄糖酯在低至 25μg/cm(2)的浓度下就降低了蚜虫的定殖；在 150μg/cm(2)或更高的浓度下，所有蚜虫都避免了处理区域。葡萄糖酯在非选择试验中也能有效地阻止蚜虫定殖。在 100μg/cm(2)时，这些酯类在 48 小时后导致死亡率增加。