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Arch Insect Biochem Physiol

Title:		Feeding-induced phenol production in Capsicum annuum L. influences Spodoptera litura F. larval growth and physiology
Author(s):		Movva V; Pathipati UR;
Address:		"Biology and Biotechnology Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, Telangana, India"
Journal Title:		Arch Insect Biochem Physiol
Year:		2017
Volume:		95
Issue:		1
Page Number:		-
DOI:		10.1002/arch.21387
ISSN/ISBN:		1520-6327 (Electronic) 0739-4462 (Linking)
Abstract:		"We studied the role of induced plant phenols as a defense response to insect herbivory. Phenolic compounds were induced in Capsicum annuum L., the source of many culinary peppers, after feeding by different stages of the insect pest, Spodoptera litura F. The phenols were identified and quantified using high performance liquid chromatography (HPLC) and effects produced by these phenols on larval development were studied. Vanillic acid was identified in plants challenged by second, fourth, and fifth instar larvae, but not in plants challenged by third instar nor unchallenged plants. Syringic acid production was induced in chili plants infested with second (0.429 +/- 0.003 mug/g fresh weight, fourth (0.396 +/- 0.01 mug/g fresh weight), and fifth instar (5.5 +/- 0.06 mug/g fresh weight) larvae, compared to untreated plants (0.303 +/- 0.01 mug/g fresh weight) plants. Leaves surface treated with the rutin deterred oviposition. Dietary exposure to chlorogenic acid, vanillic acid, syringic acid, sinapic acid, and rutin led to enhanced activities of detoxifying enzymes, beta-glucosidase, carboxyl esterase, glutathione S-transferase, and glutathione reductase in the midgut tissues of all the larval instars, indicating the toxic nature of these compounds. Protein carbonyl content and acetylcholinesterase activity was analyzed to appreciate the role of induced plant phenols in insect protein oxidation and terminating nerve impulses"
Keywords:		"Animals Capsicum/*metabolism Enzymes/metabolism Female Gallic Acid/analogs & derivatives/analysis/metabolism Herbivory Inactivation, Metabolic Insect Proteins/metabolism Larva/growth & development Oviposition/drug effects Phenol/analysis/*metabolism Plant;"
Notes:		"MedlineMovva, Vijaya Pathipati, Usha Rani eng 2017/04/28 Arch Insect Biochem Physiol. 2017 May; 95(1). doi: 10.1002/arch.21387"