Plant Response to Biotic and Abiotic Stress: A Study of Adaptation Strategies in Different Glycine max Cultivars

Author(s)

Aguiar, Maria Clara S. ; Freitas, Marcelo M. ; Freitas, Carlos A. ; Boica Junior, Arlindo L. ; Carneiro, Renato L. ; Forim, Moacir R.

• Document type: Journal article
• Source: ACS AGRICULTURAL SCIENCE & TECHNOLOGY; v. 4, n. 6, p. 13-pg., 2024-05-29.

Abstract

Insects are still the main competitor of humans for food, and combined with other environmental stresses (such as hydric stress), they cause several yield losses and the reduction in crop quality. Therefore, the effects of the herbivory, hydric stress, methyl jasmonate, and the combination of these stresses on Glycine max cultivars resistant and susceptible to Spodoptera cosmioides were investigated. Chemical profile analyses of volatile and nonvolatile compounds from leaves revealed a clear influence of the stress conditions on the plant response according to the cultivar. Plants susceptible to S. cosmioides under hydric stress showed chemical variations characteristic of plant acclimation. Application of methyl jasmonate to the leaves induced resistance responses in both cultivars. The results indicated the activation of pathways such as glycolysis, tricarboxylic acid cycle, oxylipins, phenylpropanoids, and fatty acids. Thus, this study contributes to a molecular understanding of the resistance mechanisms developed in G. max cultivars. (AU)

• FAPESP's process: 21/11878-3 - Search for bioactive molecules to pest insect control through comparative metabolomic analysis among genotypes of commercial interest
• Grantee: Moacir Rossi Forim
• Support Opportunities: Regular Research Grants
• FAPESP's process: 18/00340-0 - Evaluation of environmental factors on the metabolic profile of Gossypium hirsutum L., resistant (FMT-701) and susceptible (DeltaOpal), and its relation with detoxification mechanisms promoted by microorganisms associated to insect pests
• Grantee: Moacir Rossi Forim
• Support Opportunities: Regular Research Grants
• FAPESP's process: 14/50918-7 - INCT 2014: for the Biorational Control of Pest-Insect and Phytopathogens
• Grantee: Maria Fátima das Graças Fernandes da Silva
• Support Opportunities: Research Projects - Thematic Grants