Repositorio
Institucional

Seguel, Alex

Campos, Pedro#Borie, Fernando#Cornejo, Pablo#Lopez-Raez, Juan A.#Lopez-Garcia, Alvaro

Phosphorus Acquisition Efficiency Related to Root Traits: Is Mycorrhizal Symbiosis a Key Factor to Wheat and Barley Cropping?

FRONTIERS MEDIA SA

FRONTIERS IN PLANT SCIENCE

en

Wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.) are major crops cultivated around the world, thus playing a crucial role on human diet. Remarkably, the growing human population requires a significant increase in agricultural production in order to feed everybody. In this context, phosphorus (P) management is a key factor as it is component of organic molecules such as nucleic acids, ATP and phospholipids, and it is the most abundant macronutrient in biomass after nitrogen (N), although being one of the scarcest elements in the lithosphere. In general, P fertilization has low efficiency, as only a fraction of the applied P is acquired by roots, leaving a substantial amount to be accumulated in soil as not readily available P. Breeding for P-efficient cultivars is a relatively low cost alternative and can be done through two mechanisms: i) improving P use efficiency (PUE), and/or ii) P acquisition efficiency (PAE). PUE is related to the internal allocation/mobilization of P, and is usually represented by the amount of P accumulated per biomass. PAE relies on roots ability to acquire P from the soil, and is commonly expressed as the relative difference of P acquired under low and high P availability conditions. In this review, plant adaptations related to improved PAE are described, with emphasis on arbuscular mycorrhizal (AM) symbiosis, which is generally accepted to enhance plant P acquisition. A state of the art (1980-2018) of AM growth responses and P uptake in wheat and barley is made to discuss about the commonly accepted growth promoting effect and P increased uptake by AM fungi and the contrasting evidence about the generally accepted lack of positive responses in both plant species. Finally, the mechanisms by which AM symbiosis can affect wheat and barley PAE are discussed, highlighting the importance of considering AM functional diversity on future studies and the necessity to improve PAE definition by considering the carbon trading between all the directly related PAE traits and its return to the host plant.

Artículo de revisión

We fully acknowledge the financial support of the FONDECYT 11160385 (AS) and FONDECYT 1170264 (PCo) grants from Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT-Chile) and the support granted by CONICYT scholarship 21161474 (PCa). JL-R is supported by the grant AGL2015-64990-C2-1R (MINECO-Spain). AL-Gis supported by the grant 708530-DISPMIC (European Union's Horizon 2020 Marie Curie Individual Fellowship).

Agradecemos el apoyo financiero de las becas FONDECYT 11160385 (AS) y FONDECYT 1170264 (PCo) de la Comisión Nacional de Investigación Científica y Tecnológica (CONICYT-Chile) y el apoyo otorgado por la beca CONICYT 21161474 (PCa). JL-R cuenta con el apoyo de la beca AGL2015-64990-C2-1R (MINECO-España). AL-G cuenta con el apoyo de la beca 708530-DISPMIC (Beca Individual Marie Curie Horizonte 2020 de la Unión Europea).

10.3389/fpls.2018.00752

pdf

cereal# phosphorus# fungal diversity# mycorrhizae# nutrient uptake# PAE# root traits

http://dx.doi.org/10.3389/fpls.2018.00752

Plant Sciences

cereal# fósforo# diversidad de hongos# micorrizas# absorción de nutrientes# PAE# rasgos de raíz

Fitomejoramiento y protección vegetal

Agronomía

Micología

WOS:000434119600001

Phosphorus Acquisition Efficiency Related to Root Traits: Is Mycorrhizal Symbiosis a Key Factor to Wheat and Barley Cropping?

Artículo de revisión

version publicada

FRONTIERS MEDIA SA

FRONTIERS IN PLANT SCIENCE

Ciencias de las plantas

1664-462X

en

ANID FONDECYT 11160385#ANID FONDECYT 1170264#ANID 21161474#MINECO AGL2015-64990-C2-1R#UE HORIZON2020 708530-DISPMIC

ANID CONCYT FONDECYT 11160385

ANID CONCYT FONDECYT 1170264

ANID CONCYT 21161474

MINECO AGL2015-64990-C2-1R

EU Horizon 2020 Marie Curie Individual Fellowship 708530-DISPMIC

We fully acknowledge the financial support of the FONDECYT 11160385 (AS) and FONDECYT 1170264 (PCo) grants from Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT-Chile) and the support granted by CONICYT scholarship 21161474 (PCa). JL-R is supported by the grant AGL2015-64990-C2-1R (MINECO-Spain). AL-Gis supported by the grant 708530-DISPMIC (European Union's Horizon 2020 Marie Curie Individual Fellowship).

pdf

dorada#verde

acceso abierto

acceso abierto

CC BY

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