Root traits distinguish phosphorus acquisition of two wheat cultivars growing in phosphorus-deficient acid soil
Date
Authors
BORIE BORIE, FERNANDO RICARDO
de Souza Campos, Pedro M.
Meier, Sebastián
Morales, Arturo
Borie, Fernando R.
Cornejo, Pablo E.
Ruiz, Antonieta
Seguel, Alex
de Souza Campos, Pedro M.
Meier, Sebastián
Morales, Arturo
Borie, Fernando R.
Cornejo, Pablo E.
Ruiz, Antonieta
Seguel, Alex
Authors
Date
Datos de publicación:
10.1016/j.rhisph.2022.100549
Keywords
Arbuscular Mycorrhizae - Carboxylates - Phosphorus Nutrition - Root Architecture
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Abstract
This study aimed to analyze the differences in root traits of two wheat cultivars and their relationship with phosphorus (P) acquisition in a soil with low P availability. For that, biomass production, root morphology, acid phosphatase activity, carboxylate exudation, and arbuscular mycorrhizal colonization were examined in TCRB14 and STKI14 wheat cultivars grown in pots. Biomass production was highly correlated with P acquisition and was greater in TCRB14. Mycorrhizal colonization and oxalate concentration in rhizosphere soils were also greater in TCRB14. STKI14 presented higher acid phosphatase activity in their rhizosphere, although not significantly. Overall, TCRB14 showed longer, larger, more branched, and thinner root systems, directly correlating with P acquisition. In this study, morphological root traits were the predominant component of P acquisition and, along with AM symbiosis and oxalate exudation, could comprise key targets for breeding programs orientated to more sustainable agricultural production under P-restricted scenarios. © 2022 Elsevier B.V., All rights reserved.
Description
Keywords
Arbuscular Mycorrhizae , Carboxylates , Phosphorus Nutrition , Root Architecture
Citation
10.1016/j.rhisph.2022.100549