Repositorio
Institucional

Cornejo, Pablo

Tereucan, Gonzalo

Ruiz, Antonieta

Nahuelcura, Javiera

Oyarzun, Paulina

Santander, Christian

Winterhalter, Peter

Avelar Ferreira, Paulo Ademar

Shifts in biochemical and physiological responses by the inoculation of arbuscular mycorrhizal fungi in Triticum aestivum growing under drought conditions

WILEY

JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE

en

BACKGROUND A decrease in rainfall is one of the main constraints on wheat production, although the association of wheat with arbuscular mycorrhizal fungi (AMF) may be an alternative for crop production under drought conditions. In the present study, we used three wheat cultivars (Purple, Ilustre and Maxi Baer) inoculated with two AMF strains, one obtained from the hyperarid Atacama Desert (northern Chile, Fm) and the other obtained from southern Chile (Cc). Plants were maintained under two irrigation conditions (normal irrigation and drought) and the physiological behaviour and enzymatic and nonenzymatic antioxidant activities in the shoots were determined. In addition, the phenolic compounds were identified by high-performance liquid chromatography-dioide array detection-electrospray ionization-tandem mass spectrometry and quantified. RESULTS AMF colonization produced higher levels of efficiency of photosystem II and photosynthetic pigments. High values of catalase in Purple-Cc, ascorbate peroxidase in Purple-Cc, glutathione reductase in Maxi-Cc and superoxide dismutase in Purple-Cc, all under stress, were registered. Of the inoculated cultivars, Purple-Cc showed the highest flavonoid levels, whereas hydroxycinnamic acids were higher in Maxi-Fm without drought, with apigenin and luteolin being the most abundant. High levels of phenols were present in the Ilustre-Fm plants without drought. Under normal irrigation, high levels of antioxidant activity were registered in the AMF treatments, whereas, under stress conditions, in general, high values were observed under the Fm inoculation. CONCLUSION Our results showed that the greatest antioxidant activity and phenolic content occurred in wheat plants inoculated with AMF, indicating their influence on coping with water stress, which is of importance in vast areas where global climate change is resulting in diminished rainfall. (c) 2021 Society of Chemical Industry.

artículo original

This study was supported by the Agencia Nacional de Investigacion y Desarrollo (ANID, Chile) through grants ANID/FONDECYT/1210964, ANID/FONDECYT/1190585 and ANID/FONDAP/15130015. We also acknowledge Dr Gerold Jerz (TU Braunschweig, Germany) for access to HPLC-DAD-ESI-MS/MS equipment.

Este estudio fue apoyado por la Agencia Nacional de Investigación y Desarrollo (ANID, Chile) a través de las subvenciones ANID/FONDECYT/1210964, ANID/FONDECYT/1190585 y ANID/FONDAP/15130015. También agradecemos al Dr. Gerold Jerz (TU Braunschweig, Alemania) por el acceso al equipo HPLC-DAD-ESI-MS/MS.

10.1002/jsfa.11530

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antioxidant activity

arbuscular mycorrhizal fungi

phenolic compounds

photosynthesis

water stress

wheat crop

STOMATAL CONDUCTANCE

PLANT-GROWTH

MAIZE PLANTS

WATER-STRESS

PHOTOSYNTHESIS

L.

AQUAPORINS

METABOLISM

TOLERANCE

MELATONIN

Agricultura

Multidisciplinaria

Química Aplicada

Ciencia y tecnología de los alimentos

actividad antioxidante

hongos micorrízicos arbusculares

compuestos fenólicos

fotosíntesis

estrés hídrico

cultivo de trigo

CONDUCTANCIA ESTOMATAL

CRECIMIENTO DE PLANTAS

PLANTAS DE MAÍZ

ESTRÉS HÍDRICO

FOTOSÍNTESIS

L.

ACUAPORINAS

METABOLISMO

TOLERANCIA

MELATONINA

Shifts in biochemical and physiological responses by the inoculation of arbuscular mycorrhizal fungi in Triticum aestivum growing under drought conditions

1927

1938

artículo original

version publicada

0

metadata

metadata

ANID-FONDECYT 1210964

ANID-FONDECYT 1190585

ANID-FONDAP 15130015]

ANID FONDECYT 1210964

ANID FONDECYT 1190585

ANID FONDAP 15130015]

WOS:000700476900001