IBBEA   24401
INSTITUTO DE BIODIVERSIDAD Y BIOLOGIA EXPERIMENTAL Y APLICADA
Unidad Ejecutora - UE
artículos
Título:
Combined effects of AMF and exogenous cytokins on pomegranate under two constrasting water availability conditions
Autor/es:
BOMPADRE MJ; LAURA FERNANDEZ BIDONDO; SILVANI VANESA; COLOMBO ROXANA; M. PERGOLA; A. PARDO; GODEAS ALICIA
Revista:
SYMBIOSIS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2015 vol. 65 p. 55 - 63
ISSN:
0334-5114
Resumen:
Abstract To our knowledge, there are no studies on the interactive
effects of inoculation with arbuscular mycorrhizal
fungi and cytokinin addition to plants under drought stress.
We investigated the potential protective effect of arbuscular
mycorrhizae on pomegranate plants, combined with exogenous
cytokinin addition, under two contrasting soil water
availability regimes. Our results showed that exogenous cytokinin
addition enhances plant biomass, shoot to root ratio and
water content, as well as increasing the anthocyanin content.
However, a combination of AM fungal inoculation and cytokinin
addition did not result in a synergistic protective effect
against water stress. Plants were equally well protected against
this stress by cytokinin spraying alone. The improvement
of pomegranate growth was due mainly to exogenous cytokinin
addition. Photosynthesis was promoted both by
mycorrhizal inoculation alone and by exogenous cytokinin
addition. The main protection against oxidative stress
caused by drought was via enhanced accumulation of anthocyanins
when the plants were sprayed with cytokinins.
When cytokinins were used, the photosynthesis apparatus
was also protected.