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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Beyond host specificity: the biotechnological exploitation of chitolectin from teratocytes ofToxoneuron nigricepsto control non-permissive hosts

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Author(s):
Merlin, Bruna Lais [1] ; Pino, Lilian Ellen [2, 3] ; Peres, Lazaro Eustaquio Pereira [3] ; Prataviera, Fabio [4] ; Ortega, Edwin Moises Marcos [4] ; Consoli, Fernando Luis [1]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Luiz de Queiroz Coll Agr, Dept Entomol & Acarol, Insect Interact Lab, Piracicaba, SP - Brazil
[2] Univ Sao Paulo, Ctr Nucl Energy Agr, Plant Breeding Lab, Piracicaba, SP - Brazil
[3] Univ Sao Paulo, Dept Biol Sci, Luiz de Queiroz Coll Agr, Hormonal Control Plant Dev Lab, Piracicaba, SP - Brazil
[4] Univ Sao Paulo, Dept Exact Sci, Luiz de Queiroz Coll Agr, Piracicaba, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: JOURNAL OF PEST SCIENCE; v. 94, n. 3, p. 713-727, JUN 2021.
Web of Science Citations: 0
Abstract

The virulence factors (VF) that parasitoids use to regulate the growth and development of their hosts have potential as new events in transgenic plants. VFs are promising candidates for biotechnological exploitation and implementation of pest-control tools to meet the world's demand for food in 2100, while sustainably increasing agricultural production. However, VFs have not been used in commercial transgenic plants, since they are thought to target only a narrow range of insects, due to the parasitoid host specialization. We investigated the potential of chitolectin (TnChit), produced by the teratocytes ofToxoneuron nigriceps(Viereck) (Hymenoptera: Braconidae), as a transgenic event to control several non-permissive hosts:Chrysodeixis includens(Walker),Spodoptera albula(Walker),Spodoptera frugiperda(JE Smith) (Lepidoptera: Noctuidae),Tuta absoluta(Meyrick) (Lepidoptera: Gelechiidae) andBemisia tabaci(Gennadius) (Hemiptera: Aleyrodidae). Third instars ofC. includens,S. albulaandS. frugiperdahad lower survival and probability of molting onTnChit-modified plants than on control plants. The nutritional indices ofS. frugiperdawere also altered. Larval survival and pupal weight of males ofT. absolutawere reduced on transgenic plants. Adult emergence ofB. tabaciwas also reduced. The expression of theTnChitgene differed in the transformation events obtained and was consistent with the biological effects observed. The effects ofTnChiton non-permissive hosts demonstrate the potential of the virulence factors that parasitoids employ in host regulation, as a source of new genes in plant transformation for control of insect pests. (AU)

FAPESP's process: 14/16553-1 - Cytokinin action and its interaction with other plant hormones in the control of branching in tomato (Solanum lycopersicum L.)
Grantee:Lilian Ellen Pino
Support Opportunities: Scholarships in Brazil - Post-Doctoral