Potato brown rot incidence and severity under different management and amendment regimes in different soil types

Messiha, Nevein A. S.; Bruggen, A.H.C. van; Diepeningen, A.D. van; Vos, O.J. de; Termorshuizen, Aad J.; Tjou-Tam-Sin, N. N. A.; Janse, J.

doi:10.1007/s10658-007-9167-z

Cited by 46 publications

(35 citation statements)

References 25 publications

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“…Microcosms were inoculated with the assemblages at similar final cell densities (OD 600 = 0.1). Thus, each microcosm received the species at a cell density of OD 600 = 0.1/s, where s is the number of species in the community inoculum (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). For microcosms containing strain T, the latter was introduced at OD 600 = 0.02, regardless of the established species richness.…”

Section: Methodsmentioning

confidence: 99%

“…Because several of the functions of the soil microbiota are key to soil functioning (12), the considerable functional redundancy has been thought to overwhelm any type of diversity-function relationship (13). However, microbial diversity was found to be inversely related to invasibility of the wheat rhizosphere by Pseudomonas aeruginosa (14) and also affected the ability of Ralstonia solanacearum to induce wilting disease in tomato (15), although this was not the case in potato (16). Soil bacterial diversity exerted a positive effect on the decline of this plant pathogen.…”

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confidence: 99%

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Microbial diversity determines the invasion of soil by a bacterial pathogen

Elsas

Chiurazzi

Mallon

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

826

566

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Natural ecosystems show variable resistance to invasion by alien species, and this resistance can relate to the species diversity in the system. In soil, microorganisms are key components that determine life support functions, but the functional redundancy in the microbiota of most soils has long been thought to overwhelm microbial diversity–function relationships. We here show an inverse relationship between soil microbial diversity and survival of the invading species Escherichia coli O157:H7, assessed by using the marked derivative strain T. The invader's fate in soil was determined in the presence of ( i ) differentially constructed culturable bacterial communities, and ( ii ) microbial communities established using a dilution-to-extinction approach. Both approaches revealed a negative correlation between the diversity of the soil microbiota and survival of the invader. The relationship could be explained by a decrease in the competitive ability of the invader in species-rich vs. species-poor bacterial communities, reflected in the amount of resources used and the rate of their consumption. Soil microbial diversity is a key factor that controls the extent to which bacterial invaders can establish.

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Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

Microbial diversity determines the invasion of soil by a bacterial pathogen

Elsas

Chiurazzi

Mallon

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

826

566

View full text Add to dashboard Cite

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“…In general, potato is an intensively managed crop, requiring irrigation, fertilization, and frequent pesticide applications in order to obtain the highest yields possible (Alcón 2010, Kumari Despite its importance, the crop is subject to the pressure of various pests and diseases (Messiha et al 2007, Anonymous 1996, Rondon 2010, Guenthner et al 2012, Salami and Popoola 2007, Munyaneza et al 2009, Obidiegwu et al 2014, Kakuhenzire 2009, Lehtonen 2009). Insect pests account for 16% of crop losses of potato worldwide, and reductions in tuber yield and quality can be between 30% and 70% for various insect pests (Giordanengo et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Farmers′ perceptions, believes, knowledge and management practices of potato pests in South-Kivu Province, eastern of Democratic Republic of Congo

et al. 2017

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“…It has been recognised that these interactions can affect plant productivity in agricultural systems and has lead to the concept of suppressive ecosystems that act to protect plants against pathogens including nematodes, bacteria and fungi. [17][18][19][20] Metagenomics is one approach that has been used to explore this aspect of soil communities. This work suggests that the analogous metametabolomic approaches may also provide valuable insight into this complex system.…”

Section: Discussionmentioning

confidence: 99%

NMR metabolomics for soil analysis provide complementary, orthogonal data to MIR and traditional soil chemistry approaches – a land use study

Rochfort

Ezernieks²,

Mele

et al. 2015

Magnetic Reson in Chemistry

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The present study was designed to analyse soils by different methodologies to determine the range of traits that could be investigated for the study of environmental soil samples. Proton nuclear magnetic resonance spectroscopy ((1) H NMR) was employed for metametabolomic analysis of soils from agricultural systems (managed) or from soils in a native state (remnant). The metabolomic methodologies employed (grinding and extraction with sonication) are capable of breaking up cell walls and so enabled characterisation of both extracellular and intracellular components of soil. Diffuse mid-infrared spectroscopy (MIR) data was obtained for the same sample sets, and in addition, elemental composition was determined by conventional laboratory chemical testing methods. Also investigated was the antibiotic activity of the soil extracts. Resilient or suppressive soils are valued in the agricultural setting as they convey disease resistance (against bacterial and fungal pathogens) to crop plants. In order to test if any such biological activity could be detected in the soils, the extracts were tested against the bacteria Bacillus subtilis. Several extracts showed strong growth inhibition against the bacteria with the most active clustered together in principle component analysis (PCA) of the metabolomic data. The study showed that the NMR metabolomic approach corresponds more accurately to land use and biochemical properties potentially associated with suppression, while MIR data correlated well to inorganic chemical analysis. Thus, the study demonstrates the utility in combining these spectroscopic methods for soil analysis.

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Potato brown rot incidence and severity under different management and amendment regimes in different soil types

Abstract: Ralstonia solanacearum race 3 biovar 2, the causative agent of potato brown rot (bacterial wilt), is an economically important disease in tropical, subtropical and temperate regions of the world.

Cited by 46 publications

References 25 publications

Microbial diversity determines the invasion of soil by a bacterial pathogen

Microbial diversity determines the invasion of soil by a bacterial pathogen

Farmers′ perceptions, believes, knowledge and management practices of potato pests in South-Kivu Province, eastern of Democratic Republic of Congo

NMR metabolomics for soil analysis provide complementary, orthogonal data to MIR and traditional soil chemistry approaches – a land use study

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