Maize Responses Challenged by Drought, Elevated Daytime Temperature and Arthropod Herbivory Stresses: A Physiological, Biochemical and Molecular View

Maize ( Zea mays L.) is one of the main cereals grown around the world. It is used for human and animal nutrition and also as biofuel. However, as a direct consequence of global climate change, increased abiotic and biotic stress events have been reported in different regions of the world, which hav...

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Published in:Frontiers in plant science Vol. 12; p. 702841
Main Authors: Chávez-Arias, Cristhian Camilo, Ligarreto-Moreno, Gustavo Adolfo, Ramírez-Godoy, Augusto, Restrepo-Díaz, Hermann
Format: Journal Article
Language:English
Published: Frontiers Media S.A 21-07-2021
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Summary:Maize ( Zea mays L.) is one of the main cereals grown around the world. It is used for human and animal nutrition and also as biofuel. However, as a direct consequence of global climate change, increased abiotic and biotic stress events have been reported in different regions of the world, which have become a threat to world maize yields. Drought and heat are environmental stresses that influence the growth, development, and yield processes of maize crops. Plants have developed dynamic responses at the physiological, biochemical, and molecular levels that allow them to escape, avoid and/or tolerate unfavorable environmental conditions. Arthropod herbivory can generate resistance or tolerance responses in plants that are associated with inducible and constitutive defenses. Increases in the frequency and severity of abiotic stress events (drought and heat), as a consequence of climate change, can generate critical variations in plant-insect interactions. However, the behavior of herbivorous arthropods under drought scenarios is not well understood, and this kind of stress may have some positive and negative effects on arthropod populations. The simultaneous appearance of different environmental stresses and biotic factors results in very complex plant responses. In this review, recent information is provided on the physiological, biochemical, and molecular responses of plants to the combination of drought, heat stress, and the effect on some arthropod pests of interest in the maize crop.
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Reviewed by: Shabir Hussain Wani, Sher-e-Kashmir University of Agricultural Sciences and Technology, India; Martina Spundova, Palacký University, Olomouc, Czechia; Ana Karla M. Lobo, São Paulo State University, Brazil
This article was submitted to Plant Physiology, a section of the journal Frontiers in Plant Science
Edited by: Fabricio Eulalio Leite Carvalho, Corporacion Colombiana de Investigacion Agropecuaria (Agrosavia) – CI La Suiza, Colombia
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2021.702841