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Braz J Biol

Title:		Maize plants produce direct resistance elicited by Tetranychus urticae Koch (Acari: Tetranychidae)
Author(s):		Paulo PD; Lima CG; Dominiquini AB; Fadini MAM; Mendes SM; Marinho CGS;
Address:		"Department of Agricultural Science, Universidade Federal de Sao Joao del-Rei, Sete Lagoas, MG, Brazil. Embrapa Milho e Sorgo, Sete Lagoas, MG, Brazil"
Journal Title:		Braz J Biol
Year:		2018
Volume:		20170626
Issue:		1
Page Number:		13 - 17
DOI:		10.1590/1519-6984.19915
ISSN/ISBN:		1678-4375 (Electronic) 1519-6984 (Linking)
Abstract:		"Plants can be attacked by a wide variety of herbivores. Thus, developing protective mechanisms for resistance against these agents is an advantage for survival and reproduction. Over the course of evolution, many resistance mechanisms against herbivory have been developed by the plants. Induced direct and indirect resistance mechanisms can manifest in plants after herbivore attack. The two-spotted spider mite Tetranychus urticae is not a pest of maize crops (Zea mays), despite being reported infesting plants that may have resistances against this herbivore. We tested the hypothesis that maize plants would be able to induce direct resistance against T. urticae after, evaluating the effect of T. urticae infestation in maize plants on the development and reproduction of conspecifics. We tested induced direct resistance performing infestation and measuring biological parameters upon a second infestation. Maize plants, 40 days after sowing, were divided into two groups: 30 not infested by T. urticae (clean plants clean) and, 30 infested by the spider mite. Infestation of maize plants by T. urticae reduced the conspecific female adult survival. However, no change in the survival of immature or reproduction was observed. These results suggest the induction of induced direct resistances in maize by T. urticae. This is first report of direct resistance induction in Z. mays by the two-spotted spider mite T. urticae"
Keywords:		"Animals *Crops, Agricultural/parasitology/physiology *Disease Resistance *Mite Infestations *Tetranychidae/pathogenicity *Zea mays/parasitology/physiology;"
Notes:		"MedlinePaulo, P D Lima, C G Dominiquini, A B Fadini, M A M Mendes, S M Marinho, C G S eng Brazil 2017/06/29 Braz J Biol. 2018 Feb; 78(1):13-17. doi: 10.1590/1519-6984.19915. Epub 2017 Jun 26"