The barrier function of plant roots: biological bases for selective uptake and avoidance of soil compounds.
Funct Plant Biol
; 47(5): 383-397, 2020 04.
Article
de En
| MEDLINE
| ID: mdl-32213271
ABSTRACT
The root is the main organ through which water and mineral nutrients enter the plant organism. In addition, root fulfils several other functions. Here, we propose that the root also performs the barrier function, which is essential not only for plant survival but for plant acclimation and adaptation to a constantly changing and heterogeneous soil environment. This function is related to selective uptake and avoidance of some soil compounds at the whole plant level. We review the toolkit of morpho-anatomical, structural, and other components that support this view. The components of the root structure involved in selectivity, permeability or barrier at a cellular, tissue, and organ level and their properties are discussed. In consideration of the arguments supporting barrier function of plant roots, evolutionary aspects of this function are also reviewed. Additionally, natural variation in selective root permeability is discussed which suggests that the barrier function is constantly evolving and is subject of natural selection.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Sol
/
Racines de plante
Langue:
En
Journal:
Funct Plant Biol
Année:
2020
Type de document:
Article
Pays d'affiliation:
Mexique