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. 1995 Nov;21(11):1781-8.
doi: 10.1007/BF02033676.

Phloem transport of antirrhinoside, an iridoid glycoside, inAsarina scandens (Scrophulariaceae)

E Gowan  1 , B A Lewis, R Turgeon
Affiliations

Phloem transport of antirrhinoside, an iridoid glycoside, inAsarina scandens (Scrophulariaceae)

E Gowan et al. J Chem Ecol. 1995 Nov.

Abstract

Iridoid glycosides, terpene-derived compounds found in many plant families, protect the plant against generalist and nonadapted specialist insect herbivores, fungi, and bacteria. Antirrhinoside, a common iridoid glycoside in the tribe Antirrhineae (Scrophulariaceae), was rapidly labeled when mature leaves ofAsarina scandens were exposed to(14)CO2. Antirrhinoside was translocated in the phloem along with sucrose. Radiolabeled antirrhinoside appeared in the petiole of the labeled leaf within 20 min of the beginning of the labeling period. Antirrhinoside was also found in phloem sap obtained by the EDTA method.

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