13-Oxo-9E,11E-octadecadienoic acid, a potent PPARα activator derived from tomato juice and an isomer of 9-oxo-ODA, exhibits the ability to decrease plasma and hepatic triglyceride levels in obese diabetic mice[1].
13(S)-HpOTrE is a monohydroperoxy polyunsaturated fatty acid produced in soybeans by the action of soybean LO-2 on esterified α-linolenic acid.[1] Incubation of soybean seedling biomembranes with soybean LO-2 catalyzes the formation of both 9- and 13-HpOTrE in a molar ratio of 10:1.1 In plants, 13(S)-HpOTrE can be metabolized by the hydroperoxide lyase pathway producing aldehyde and oxoacid fragments, or by the hydroperoxide dehydratase pathway producing jasmonic acid.[2],[3],[4] Treatment of tomato leaves with 13-HpOTrE causes induction of proteinase inhibitors, simulating the normal response to wounding.5 This data suggests that in plants 13(S)-HpOTrE may participate in a lipid-based signalling system initiated by insect and pathogen attack.
Tomatine hydrochloride is an alkaloid that occurs in the extract of leaves of wild tomato plants. It inhibits the growth of many fungi and bacteria. It is used as a precipitating agent for steroids.
Ascr#18 is an ascaroside hormone that is expressed throughout nematode development. It exhibits the ability to enhance resistance against a range of infections, including viral, bacterial, oomycete, fungal, and nematode, in Arabidopsis, tomato, potato, and barley[1].
Isoaltenuene shows antibiotic activity against Gram-positive bacteria; it also shows a minor phytotoxic activity on tomato leaves at level of 20 ug spot . Isoaltenuene exhibits cytotoxic activity against lung cancer cell line A549, breast cancer cell line