Importance and causal agents of root rot on field pea and lentil on the Canadian prairies, 2014–2017

Chatterton, Syama; Harding, Michael W.; Bowness, Robyne; McLaren, Debra L.; Banniza, Sabine; Gossen, B. D.

doi:10.1080/07060661.2018.1547792

Cited by 50 publications

(65 citation statements)

References 36 publications

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“…Aphanomyces euteiches has recently emerged as a challenging root pathogen in western Canada, that is not limited to specific soil or land use types [ 29 ]. Root rot diseases caused by this soil-borne oomycete fungus results in substantial losses in pulse crop production, especially under environmental conditions that promote the pathogen growth and development [ 30 , 31 , 32 ]. Infection results in symptoms of brown-stained roots, generally similar among all infected legumes, leading to poor growth and death of plants.…”

Section: Introductionmentioning

confidence: 99%

Effects of Lentil Genotype on the Colonization of Beneficial Trichoderma Species and Biocontrol of Aphanomyces Root Rot

et al. 2020

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Trichoderma species are opportunistic plant symbionts that are common in the root and rhizosphere ecosystems. Many Trichoderma species may enhance plant growth, nutrient acquisition, and disease resistance, and for these reasons, they are widely used in agriculture as biofertilizers or biocontrol agents. Host plant genotype and other microorganisms, such as root pathogens, may influence the efficacy of Trichoderma inoculants. Aphanomyces euteiches is an important soil-borne oomycete in western Canada that causes root rot in legume crops such as lentil and pea, and there is not yet any significantly resistant varieties or effective treatments available to control the disease. In this study, the composition of root-associated fungal communities and the abundance of Trichoderma species, T. harzianum strain T-22 and T. virens strain G41, was determined in the roots of eight Lens genotypes based on internal transcribed spacer (ITS) Illumina MiSeq paired-end sequencing, both in the presence and the absence of the root rot pathogen Aphanomyces euteiches. Biocontrol effects of T. harzianum on A. euteiches was also examined. Significant genotypic variations were observed in the composition of root-associated fungal communities and the abundance of the different Trichoderma species in the lentil roots. The presence of A. euteiches altered the composition of Trichoderma found associated to the lentil genotypes. Biocontrol of A. euteiches by T. harzianum T22 species was observed in vitro and positive correlations between the abundance of Trichoderma and plant root and shoot biomass were observed in vivo. These findings revealed that lentil genotype and infection by the phytopathogen A. euteiches greatly influenced the colonization of root-associated fungi and the abundance of the Trichoderma species, as well as the effect on plant growth promotion. The multipartite interactions observed among lentil genotypes, Trichoderma species and A. euteiches suggest possibilities to select compatible host-beneficial microbe combinations in lentil breeding programs and to develop application strategies to harness the beneficial effects of Trichoderma inoculants in sustainable crop production systems.

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Section: Introductionmentioning

confidence: 99%

Effects of Lentil Genotype on the Colonization of Beneficial Trichoderma Species and Biocontrol of Aphanomyces Root Rot

et al. 2020

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“…Polymerase chain reaction assays targeting individual pathogens of the PRRC have been established and employed to study the presence, abundance, and synergistic or antagonistic interactions of selected pathogenic species. Through end-point PCR, the study of Chatterton et al (2018) surveyed pea roots grown in Canadian fields over 4 years and confirmed the presence of the PRRC pathogens which are A. euteiches, F. avenaceum, F. oxysporum, F. redolens, and F. solani. Remarkably, A. euteiches could not be isolated from roots by means of traditional culturing methods, despite its frequent detection by PCR.…”

Section: Introductionmentioning

confidence: 89%

“…Although not well understood, there is evidence that different combinations of these pathogens interact synergistically and infect the plant conjointly, forming a pea root rot complex (PRRC) (Baćanović-Šišić et al, 2018;Chatterton et al, 2018). Co-infection of two or more microbial species can break down resistance against single pathogens and aggravate disease as shown for several multi-species pathosystems of pea (Kerr, 1963;Shehata et al, 1983;Peters and Grau, 2002;Willsey et al, 2018;Zitnick-Anderson et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Untangling the Pea Root Rot Complex Reveals Microbial Markers for Plant Health

et al. 2021

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Plant health is recognised as a key element to ensure global food security. While plant breeding has substantially improved crop resistance against individual pathogens, it showed limited success for diseases caused by the interaction of multiple pathogens such as root rot in pea (Pisum sativum L.). To untangle the causal agents of the pea root rot complex and determine the role of the plant genotype in shaping its own detrimental or beneficial microbiome, fungal and oomycete root rot pathogens, as well as previously identified beneficials, i.e., arbuscular mycorrhizal fungi (AMF) and Clonostachys rosea, were qPCR quantified in diseased roots of eight differently resistant pea genotypes grown in four agricultural soils under controlled conditions. We found that soil and pea genotype significantly determined the microbial compositions in diseased pea roots. Despite significant genotype x soil interactions and distinct soil-dependent pathogen complexes, our data revealed key microbial taxa that were associated with plant fitness. Our study indicates the potential of fungal and oomycete markers for plant health and serves as a precedent for other complex plant pathosystems. Such microbial markers can be used to complement plant phenotype- and genotype-based selection strategies to improve disease resistance in one of the world’s most important pulse crops of the world.

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“…Er zijn ziektewerende gronden gevonden waarvan de werking biologisch is (Persson et al, 1999). De ziekte wordt vaak niet opgemerkt, maar lijkt in erwt algemeen te zijn en problematischer te worden, vooral door nauwere rotaties (Chatterton et al, 2019). Kan zich ook goed ontwikkelen in gronden met een lage temperatuur, waardoor groenbemesters die tot de peulvruchten behoren waarschijnlijk bij kunnen dragen tot de instandhouding van de ziekte.…”

Section: Aphanomyces Euteiches (Wortelrot)unclassified

“…2.3.4). Buitenlands onderzoek heeft het bestaan van zo'n complex van pathogenen die betrokken is bij wortelrot van peulvruchten bevestigd (bv Gaulin et al, 2007;Heyman et al, 2013;Chatterton et al, 2019;Pieczarka & Abawi, 1978a),. waarbij ook Pratylenchus penetrans (wortellesieaaltje) genoemd wordt.…”

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Beheersing van bodempathogenen via bodemgezondheidsmaatregelen : Een overzicht van de beschikbare kennis voor een selectie van akkerbouwgewassen met hun bijbehorende bodemziekten

Rozen¹,

Huiting²,

Allema³

et al. 2020

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Een overzicht van de beschikbare kennis voor een selectie van akkerbouwgewassen met hun bijbehorende bodemziekten Beheersing van bodempathogenen via bodemgezondheidsmaatregelen Beheersing van bodempathogenen via bodemgezondheidsmaatregelen Een overzicht van de beschikbare kennis voor een selectie van akkerbouwgewassen met hun bijbehorende bodemziekten Dit onderzoek is gefinancierd door TKI AgriFood en Brancheorganisatie Akkerbouw, en is uitgevoerd binnen de PPS Beter Bodembeheer (AF-16064). WR is een onderdeel van Rapport WPR-955 A.J. Termorshuizen, L.P.G. Molendijk, J. Postma, 2019. Beheersing van bodempathogenen via bodemgezondheidsmaatregelen; Een overzicht van de beschikbare kennis voor een selectie van akkerbouwgewassen met hun bijbehorende bodemziekten. Wageningen Research, Rapport WPR-955. 104 blz.; 1 fig.; 6 tab.; 304 ref. Dit rapport is gratis te downloaden op https://doi.org/10.18174/513197Dit rapport geeft een overzicht van bodemmaatregelen die ingezet kunnen worden om bodempathogenen in de Nederlandse akkerbouw te beheersen. De nadruk ligt op de gewassen aardappelen, cichorei, granen, kool-en raapzaad, peen, peulvruchten, suikerbiet en ui. Relevante kennis in de wetenschappelijke literatuur en rapporten en kennis aanwezig bij experts vanuit lopend onderzoek is voor de meest voorkomende problematische bodempathogenen, zowel aaltjes als schimmels, in kaart gebracht.

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Importance and causal agents of root rot on field pea and lentil on the Canadian prairies, 2014–2017

Cited by 50 publications

References 36 publications

Effects of Lentil Genotype on the Colonization of Beneficial Trichoderma Species and Biocontrol of Aphanomyces Root Rot

Effects of Lentil Genotype on the Colonization of Beneficial Trichoderma Species and Biocontrol of Aphanomyces Root Rot

Untangling the Pea Root Rot Complex Reveals Microbial Markers for Plant Health

Beheersing van bodempathogenen via bodemgezondheidsmaatregelen : Een overzicht van de beschikbare kennis voor een selectie van akkerbouwgewassen met hun bijbehorende bodemziekten

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