Titel
Didymella pinodes Affects N and P Uptakes and Their Efficiencies in a Tripartite Mutualism of Pea
Autor*in
Getinet Desalegn
Department of Crop Sciences, University of Natural Resources and Life Sciences
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Abstract
In pea (Pisum sativum L.) production, Didymella pinodes (Berk. & A. Bloxam) Petr. is the most damaging aerial pathogen globally. In two completely randomized pot experiments with four replicates, we studied the effects of D. pinodes infection interaction with three symbiotic treatments (Rhizobium leguminosarum biovar viciae, arbuscular mycorrhizal fungi (AMF) and co-inoculation of both) and a non-symbiotic control on one or two pea cultivars. Grain yield and yield components of pea, uptakes and physiological efficiencies of N and P and nitrogen fixation were recorded. The results show that there were significant interaction effects among treatments. Therefore, productivity of crops and their uptakes and efficiencies of N and P are dependent on plant health conditions, effectiveness of microbial symbionts and response of pea genotypes. For cv. Protecta inoculated with both symbionts, pathogen infection compared to healthy plants significantly enhanced P acquisition. Overall, plants inoculated with rhizobia alone had higher grain yield by 20–30% and nitrogen fixation by 20–25% than in dual symbiosis independent of plant health conditions. In conclusion, aerial pathogen, pea genotypes and microbial symbionts interactions modified N and P uptake and their efficiencies, which can lead to improving final grain yield quantity and quality in a sustainable farming system.
Stichwort
peagrain yieldaerial pathogenmycorrhizarhizobianitrogenphosphorus
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
Erschienen in
Titel
Agronomy
Band
9
Ausgabe
2
ISSN
2073-4395
Erscheinungsdatum
2019
Seitenanfang
52
Publication
MDPI AG
Erscheinungsdatum
2019
Zugänglichkeit
Rechte
Rechteangabe
© 2019 by the authors
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