Data/hora: 15/06/2024 00:51:54

Biblioteca(s): | Embrapa Milho e Sorgo.
Data corrente: | 09/11/2023
Data da última atualização: | 01/03/2024
Autoria: | HOSTETLER, A. N.; SOUSA, S. M. de; SPARKS, E. E.
Afiliação: | ASHLEY N. HOSTETLER, UNIVERSITY OF DELAWARE; SYLVIA MORAIS DE SOUSA TINOCO, CNPMS; ERIN E. SPARKS, UNIVERSITY OF DELAWARE.
Título: | Root responses to abiotic stress: a comparative look at root system architecture in maize and sorghum.
Ano de publicação: | 2023
Fonte/Imprenta: | Journal of Experimental Botany, v. 75, n. 2, p. 553-562, 2023.
DOI: | https://doi.org/10.1093/jxb/erad390
Idioma: | Inglês
Conteúdo: | Under all environments, roots are important for plant anchorage and acquiring water and nutrients. However, there is a knowledge gap regarding how root architecture contributes to stress tolerance in a changing climate. Two closely related plant species, maize and sorghum, have distinct root system architectures and different levels of stress tolerance, making comparative analysis between these two species an ideal approach to resolve this knowledge gap. However, current research has focused on shared aspects of the root system that are advantageous under abiotic stress conditions rather than on differences. Here we summarize the current state of knowledge comparing the root system architecture relative to plant performance under water deficit, salt stress, and low phosphorus in maize and sorghum. Under water deficit, steeper root angles and deeper root systems are proposed to be advantageous for both species. In saline soils, a reduction in root length and root number has been described as advantageous, but this work is limited. Under low phosphorus, root systems that are shallow and wider are beneficial for topsoil foraging. Future work investigating the differences between these species will be critical for understanding the role of root system architecture in optimizing plant production for a changing global climate.
Palavras-Chave: | Cereal crops; Déficit hídrico; Estresse abiótico.
Thesagro: | Fósforo; Milho; Raiz; Seca; Sistema Radicular; Solo Salino; Sorgo.
Thesaurus Nal: | Abiotic stress; Drought; Phosphorus; Root systems; Soil salinity.
Categoria do assunto: | --
Registro original: | Embrapa Milho e Sorgo (CNPMS)
Exemplares: | CNPMS - (30176-1) - UPC - AP - DD -  -  -  - DIS