scholarly journals Microbial symbionts affect Pisum sativum proteome and metabolome under Didymella pinodes infection

2016 ◽  
Vol 143 ◽  
pp. 173-187 ◽  
Author(s):  
G. Desalegn ◽  
R. Turetschek ◽  
H.-P. Kaul ◽  
S. Wienkoop
Keyword(s):  
Pisum Sativum ◽  
Didymella Pinodes ◽  
Microbial Symbionts

scholarly journals Didymella pinodes Affects N and P Uptakes and Their Efficiencies in a Tripartite Mutualism of Pea

Agronomy ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 52
Author(s):  
Getinet Desalegn ◽  
Reinhard Turetschek ◽  
Stefanie Wienkoop ◽  
Hans-Peter Kaul
Keyword(s):  
Nitrogen Fixation ◽  
Grain Yield ◽  
Mycorrhizal Fungi ◽  
Rhizobium Leguminosarum ◽  
Farming System ◽  
P Uptake ◽  
Plant Health ◽  
Health Conditions ◽  
Didymella Pinodes ◽  
Microbial Symbionts

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.

Pinolide, a New Nonenolide Produced by Didymella pinodes, the Causal Agent of Ascochyta Blight on Pisum sativum

2012 ◽  
Vol 60 (21) ◽  
pp. 5273-5278 ◽  
Author(s):  
Alessio Cimmino ◽  
Anna Andolfi ◽  
Sara Fondevilla ◽  
Mohamed A. Abouzeid ◽  
Diego Rubiales ◽  
...  
Keyword(s):  
Pisum Sativum ◽  
Ascochyta Blight ◽  
Causal Agent ◽  
Didymella Pinodes

scholarly journals Relative Host Resistance to Black Spot Disease in Field Pea (Pisum sativum) is Determined by Individual Pathogens

Plant Disease ◽  
2015 ◽  
Vol 99 (5) ◽  
pp. 580-587 ◽  
Author(s):  
Hieu Sy Tran ◽  
Ming Pei You ◽  
Tanveer N. Khan ◽  
Martin J. Barbetti
Keyword(s):  
Pisum Sativum ◽  
Host Resistance ◽  
Ascochyta Blight ◽  
Black Spot ◽  
Field Pea ◽  
Breeding Programs ◽  
Didymella Pinodes ◽  
Progress Curve ◽  
The Individual ◽  
Important Disease

Black spot, also known as Ascochyta blight, is the most important disease on field pea (Pisum sativum). It is caused by a complex of pathogens, the most important of which in Australia include Didymella pinodes, Phoma pinodella, and P. koolunga. The relative proportions of these and other component pathogens of the complex fluctuate widely across time and geographic locations in Australia, limiting the ability of breeders to develop varieties with effective resistance to black spot. To address this, 40 field pea genotypes were tested under controlled environment conditions for their individual stem and leaf responses against these three pathogens. Disease severity was calculated as area under disease progress curve (AUDPC), and subsequently converted to mean rank (MR). The overall rank (OR) for each pathogen was used to compare response of genotypes under inoculation with each pathogen. The expressions of host resistance across the field pea genotypes were largely dependent upon the individual test pathogen and whether the test was on stem or leaf. Overall, P. koolunga caused most severe stem disease; significantly more severe than either D. pinodes or P. pinodella. This is the first report of the host resistance identified in field pea to P. koolunga; the five genotypes showing highest resistance on stem, viz. 05P778-BSR-701, ATC 5338, ATC 5345, Dundale, and ATC 866, had AUDPC MR values <250.4, while the AUDPC MR values of the 19 genotypes showing the best resistance on leaf was less than 296.8. Two genotypes, ATC 866 and Dundale, showed resistance against P. koolunga on both stem and leaf. Against D. pinodes, the four and 16 most resistant genotypes on stem and leaf had AUDPC MR values <111.2 and <136.6, respectively, with four genotypes showing resistance on both stem and leaf including 05P770-BSR-705, Austrian Winter Pea, 06P822-(F5)-BSR-6, and 98107-62E. Against P. pinodella, four and eight genotypes showing the best resistance on stem and leaf had AUDPC MR values <81.3 and <221.9, respectively; three genotypes, viz. 98107-62E, Dundale, and Austrian Winter Pea showed combined resistance on stem and leaf. A few genotypes identified with resistance against two major pathogens of the complex will be of particular significance to breeding programs. These findings explain why field pea varieties arising from breeding programs in Australia fail to display the level or consistency of resistance required against black spot and why there needs to be a wider focus than D. pinodes in breeding programs.

scholarly journals Key metabolic traits of Pisum sativum maintain cell vitality during Didymella pinodes infection: cultivar resistance and the microsymbionts' influence

2017 ◽  
Vol 169 ◽  
pp. 189-201 ◽  
Author(s):  
Reinhard Turetschek ◽  
Getinet Desalegn ◽  
Tamara Epple ◽  
Hans-Peter Kaul ◽  
Stefanie Wienkoop
Keyword(s):  
Pisum Sativum ◽  
Cultivar Resistance ◽  
Metabolic Traits ◽  
Didymella Pinodes ◽  
Cell Vitality
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