Browsing by Autor "Barbara Doyle Prestwich"

Now showing 1 - 3 of 3

Bioprospecting in potato fields in the Central Andean Highlands: Screening of rhizobacteria for plant growth-promoting properties
(Elsevier BV, 2013) Jonas Ghyselinck; Siva L. S. Velivelli; Kim Heylen; Eileen O’Herlihy; Javier Franco; Mercy Rojas; Paul de Vos; Barbara Doyle Prestwich
Identification of mVOCs from Andean Rhizobacteria and Field Evaluation of Bacterial and Mycorrhizal Inoculants on Growth of Potato in its Center of Origin
(Springer Science+Business Media, 2014) Siva L. S. Velivelli; Peter Kromann; Paúl Loján; Mercy Rojas; Javier Franco; Juan Pablo Suárez; Barbara Doyle Prestwich
The induction of Ethylene response factor 3 ( ERF3 ) in potato as a result of co-inoculation with Pseudomonas sp. R41805 and Rhizophagus irregularis MUCL 41833 – a possible role in plant defense
(Taylor & Francis, 2015) Siva L. S. Velivelli; Paúl Loján; Sylvie Cranenbrouck; Hervé Dupré de Boulois; Juan Pablo Suárez; Stéphane Declerck; Javier Franco; Barbara Doyle Prestwich
Colonization of plant rhizosphere/roots by beneficial microorganisms (e.g. plant growth promoting rhizobacteria - PGPR, arbuscular mycorrhizal fungi - AMF) confers broad-spectrum resistance to virulent pathogens and is known as induced systemic resistance (ISR) and mycorrhizal-induced resistance (MIR). ISR or MIR, an indirect mechanism for biocontrol, involves complex signaling networks that are regulated by several plant hormones, the most important of which are salicylic acid (SA), jasmonic acid (JA) and ethylene (ET). In the present study, we investigated if inoculation of potato plantlets with an AMF (Rhizophagus irregularis MUCL 41833) and a PGPR (Pseudomonas sp R41805) either alone or in combination, could elicit host defense response genes in the presence or absence of Rhizoctonia Solani EC-1, a major potato pathogen. RT-qPCR revealed the significant expression of ethylene response factor 3 (EFR3) in mycorrhized potato plantlets inoculated with Pseudomonas sp R41805 and also in mycorrhized potato plantlets inoculated with Pseudomonas sp R41805 and challenged with R. solani. The significance of ethylene response factors (ERFs) in pathogen defense has been well documented in the literature. The results of the present study suggest that the dual inoculation of potato with PGPR and AMF may play a part in the activation of plant systemic defense systems via ERF3.