Pisum sativum´s cultivar specific taste for symbionts

Reinhard Turetschek, Stephan Holzbach, Stefan Sassmann, Getinet Desalegn, Hans-Peter Kaul, Stefanie Wienkoop

Because of their nutritional value to man and life stock, legumes account for a big part of agricultural production. Their symbiotic interactions (Rhizobia & arbuscular mycorrhizal fungi - AMF) enhance nutritional what makes them substantial in sustainable agriculture. Each legume is capable of forming symbiosis with particular Rhizobia and commonly several species of AMF. The interaction with Rhizobia is to a great extent controlled by the plant and each species as well as cultivars show different nodule morphology. With regard to breeding strategies, agronomy is interested in the effect of below ground parts on above ground traits (e.g. biomass, pathogen resistance levels, and yield). We tested the effect of single and co-inoculation with Rhizobia and AMF on the plants´ morphology as well as the leaf proteome in two cultivars of P. sativum. The nodulation profile (weight and number of nodules) is remarkably distinct among cultivars and the proteome shows predominantly cultivar rather than symbiotic effects. However, we found that single Rhizobia inoculation shows the utmost effect on the proteome in a cultivar specific manner. The intensity of the host-symbiont interaction over a plants´ lifespan usually varies between cultivars. We found as well that fresh weight and number of nodules differ among the cultivars in a time dependent manner. We further aim to elucidate these time effects on the proteome as well as on the metabolome. These insights about cultivar specific symbiotic interaction provide knowledge for advanced sustainable breeding strategies.

External organisation(s)
Universität für Bodenkultur Wien
Publication date
Peer reviewed
Austrian Fields of Science 2012
106037 Proteomics, 401112 Plant protection, 106008 Botany, 401110 Plant cultivation
ASJC Scopus subject areas
Agricultural and Biological Sciences(all)
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