Factors Affecting Infection Cushion Development by<i>Rhizoctonia solani</i>on Cotton

Armentrout, V. N.; Downer, A. James; Grasmick, D. L.; Weinhold, A. R.

doi:10.1094/phyto-77-623

Cited by 32 publications

(10 citation statements)

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“…have been shown to form similar hyphal aggregations, termed infection cushions, on several host plants (e.g. Armentrout et al 1987;Hietala 1997). In the present study, branched hyphal proliferation, apparently formed within the intercellular spaces, was commonly observed within the epidermis and mesophyll.…”

Section: Discussionsupporting

confidence: 65%

Rhizoctonia solani AG 2‐1 as a causative agent of cotyledon rot on European beech (Fagus sylvatica)

Hietala¹,

Mehli

Nagy³

et al. 2005

Forest Pathology

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Rhizoctonia solani was frequently isolated in the Italian Alps from nursery-grown European beech (Fagus sylvatica) seedlings displaying symptoms of cotyledon rot. Koch's postulates were verified and mode of infection of the associated isolates was investigated with light and scanning electron microscopy. Population structure of the pathogen was investigated by scoring the anastomosis reaction type in pairings between different isolates from the same seedbed. One pathogen genotype showed a large distribution area within the seedbed, this implying that the inoculum had been building up in the seedbed over a longer time period. Hyphal anastomosis tests and sequence analysis of the internal transcribed spacer (ITS) region of ribosomal DNA indicated that the pathogen belongs to AG 2-1 of R. solani. ITS sequence analysis indicates that the isolates from beech are closely related to R. solani isolates causing a disease on tulip. The striking similarities between the two diseases are discussed.

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Section: Discussionsupporting

confidence: 65%

Rhizoctonia solani AG 2‐1 as a causative agent of cotyledon rot on European beech (Fagus sylvatica)

Hietala¹,

Mehli

Nagy³

et al. 2005

Forest Pathology

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“…MeG has been shown to inhibit cushion formation by preventing production of mucilage from the hyphal cells, possibly due to interference by MeG with uptake of specific nutrients locally available on the host surface (Armentrout et al 1987, Weihnold andBowman 1974). In the presence of MeG, Rhizoctonia hyphae did not align with the topographical features of the cotyledon surface, instead hyphae wandered over it (Armentrout et al 1987). This phenomenon has been observed as well in nonpathogenic Rhizoctonia-host interactions (Keijer et al 1997).…”

Section: W3 Contigs 48 and 58mentioning

confidence: 99%

Gene expression profiling of the plant pathogenic basidiomycetous fungus Rhizoctonia solani AG 4 reveals putative virulence factors

Lakshman¹,

Alkharouf²,

Roberts³

et al. 2012

Mycologia

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“…The ability to produce discrete appressoria is highly variable and regulated seemingly by numerous factors. Hyphae may penetrate without an appressorium through stomata or wounds [14][15][16]. All Rhizoctonia species are obligate aerobic fungi, which are habiting mainly in rhizosphere, however, they may survive as saprobionts in the upper layer of the soil forming a mycelial web, thus the undisturbed soil enhance the risk of the infection of young roots [17].…”

Section: Introductionmentioning

confidence: 99%

Susceptibility of Wheat Varieties to Soil-Borne <i>Rhizoctonia</i> Infection

Oros¹,

Naàr²,

Magyar³

2013

AJPS

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Response of 19 wheat varieties cultivated in Hungary varied within large limits to soil borne Rhizoctonia infection. The most frequent symptom, usually leading to damping off was the root neck necrosis. Four significant factors influencing the susceptibility of wheat comprised 71% of total variation but none of them was dominant. The inhibition of development of survivors in Rhizoctonia infested soil correlated with overall susceptibility of variety concerned. The varieties Emese, Kikelet and Palotás are proved to be less susceptible, but none of the varieties could be certified as tolerant. No relationships were revealed between pathogenicity of 26 Rhizoctonia strains studied and their taxonomic position or origin. The anamorph strains of Athelia, Ceratobasidium, Ceratorhiza and Waitea similar to Thanatephorus anamorphs selectively infected the wheat varieties, but the syndromatic pictures were undistinguishable with unarmed eye. R. solani was proved to be more aggressive against germinating wheat than R. cerealis. Nine significant factors influencing the virulence of Rhizoctonia strains comprised 82% of total variation, and six of them influenced exclusively Thanatephorus anamorphs.

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Factors Affecting Infection Cushion Development byRhizoctonia solanion Cotton

Cited by 32 publications

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Rhizoctonia solani AG 2‐1 as a causative agent of cotyledon rot on European beech (Fagus sylvatica)

Rhizoctonia solani AG 2‐1 as a causative agent of cotyledon rot on European beech (Fagus sylvatica)

Gene expression profiling of the plant pathogenic basidiomycetous fungus Rhizoctonia solani AG 4 reveals putative virulence factors

Susceptibility of Wheat Varieties to Soil-Borne <i>Rhizoctonia</i> Infection

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Factors Affecting Infection Cushion Development byRhizoctonia solanion Cotton

Cited by 32 publications

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Rhizoctonia solani AG 2‐1 as a causative agent of cotyledon rot on European beech (Fagus sylvatica)

Rhizoctonia solani AG 2‐1 as a causative agent of cotyledon rot on European beech (Fagus sylvatica)

Gene expression profiling of the plant pathogenic basidiomycetous fungus Rhizoctonia solani AG 4 reveals putative virulence factors

Susceptibility of Wheat Varieties to Soil-Borne &lt;i&gt;Rhizoctonia&lt;/i&gt; Infection

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Susceptibility of Wheat Varieties to Soil-Borne <i>Rhizoctonia</i> Infection