Tobacco leaf spot and root rot caused by <i>Rhizoctonia solani</i> Kühn

González, Marleny; Pujol, Merardo; Métraux, Jean‐Pierre; García, Vicente González; Bolton, Melvin D.; Borrás‐Hidalgo, Orlando

doi:10.1111/j.1364-3703.2010.00664.x

Cited by 81 publications

(76 citation statements)

References 60 publications

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“…Ralstonia solanacearum is a pathogenic agent of bacterial wilt23; Pseudomonas syringae, P. aeruginosa, P. corrugate and P. mediterranea are economically important plant pathogens242526; Rhizoctonia solani is a soil-borne fungal pathogen that causes disease in a wide range of plants including tobacco27; Fusarium contains many plant pathogens such as F. oxysporumi for infection of tomato and F. solani for infection of pea28. It is possible that these pathogenic microorganisms may cause serious plant diseases in the degraded soils, consistent with the high disease index of tobacco bacteria wilt in the degraded soils (Table 2).…”

Section: Discussionmentioning

confidence: 99%

Microbial taxa and functional genes shift in degraded soil with bacterial wilt

Zhang

Wang

Shu

et al. 2017

Sci Rep

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Soil degradation is a serious global problem, but little is known about how soil microbial communities respond to soil degradation as well as their feedback to ecosystem functioning. In this study, we found the microbial community composition, structure and functional potential significantly altered in the degraded soils with bacterial wilt (termed as degraded soils). Compared with healthy soils, OTU richness of beneficial microorganisms were significantly decreased, but OTU richness of pathogenic microorganisms were significantly increased in the degraded soils. Functional gene array (GeoChip 5.0) analysis showed the functional metabolic potential of genes involved in stress, virulence, sulfur cycle, metal resistance, degradation of plant cell wall was significantly increased in the degraded soils. Increased functional metabolic potential of these genes may be related to the acidification and severe plant disease of degraded soils. Biological activity of degraded soils was obviously decreased with weakened soil enzyme activities when compared to the healthy soils. Soil pH and enzyme activities were negatively correlated with the abundance of genes involved in sulfur cycle, virulence, and stress responses. This study provides new insights into our understanding of soil microbial community responses to soil degradation.

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Section: Discussionmentioning

confidence: 99%

Microbial taxa and functional genes shift in degraded soil with bacterial wilt

Zhang

Wang

Shu

et al. 2017

Sci Rep

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“…; González et al. ). Recently, the so‐called tobacco false broomrape disease has become an important problem for this crop in Cuba.…”

Section: Introductionmentioning

confidence: 97%

Identification and Molecular Characterization of Nocardia sp. as a New Causal Agent of Tobacco False Broomrape

Morán

Chacón

Córdoba-Sellés

et al. 2012

Journal of Phytopathology

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Tobacco false broomrape disease is a serious problem in tropical countries. To identify its cause, experiments were conducted in tobacco fields. Six actinomycete strains were isolated from white succulent outgrowths of tobacco roots and their pathogenicity was confirmed by biological testing. Based on phenotypic and 16S rRNA gene sequence BLAST analysis, the strains were identified as members of the genus Nocardia. This association was also confirmed by secA1 gene phylogenetic analysis. This is the first report of Nocardia sp. as the cause of tobacco false broomrape.

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“…Although no race structure is defined for this species, isolates are grouped based on hyphal anastomosis reactions and consequently are placed into so-called anastomosis groups (AGs) [1]. In tobacco ( Nicotiana tabacum ), R. solani AG-2-2 and AG-3 cause damping-off, stem rot and sore shin (a plant seedlings disease characterized by stem cankers that girdle the stem near the soil line) in older plants [2, 3].…”

Section: Introductionmentioning

confidence: 99%

“…However, AG-2-2 and AG-3 already present in a field can also initiate infection [4]. Management of this disease can be difficult using conventional means because R. solani can subsist for long period in soil as mycelium or sclerotia [1]. …”

Section: Introductionmentioning

confidence: 99%

“…However, knowledge of tobacco resistance mechanisms to R. solani is insufficient. Various lines of evidences suggest multiple responses involving constitutive and induced mechanisms controlled by numerous defense pathways [1]. Though the identification of resistance to R. solani has been successful in crops such as peanut, bean, rice, sorghum, and sugar beet [5–9], resistance screens in tobacco germplasm have been limited to a small number of commonly used cultivars and the disease remains a major economic factor for tobacco growers.…”

Section: Introductionmentioning

confidence: 99%

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High-throughput SuperSAGE for gene expression analysis of Nicotiana tabacum–Rhizoctonia solani interaction

et al. 2017

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ObjectiveThe ubiquitous soil pathogen Rhizoctonia solani causes serious diseases in different plant species. Despite the importance of this disease, little is known regarding the molecular basis of susceptibility. SuperSAGE technology and next-generation sequencing were used to generate transcript libraries during the compatible Nicotiana tabacum–R. solani interaction. Also, we used the post-transcriptional silencing to evaluate the function of a group of important genes.ResultsA total of 8960 and 8221 unique Tag sequences identified as differentially up- and down-regulated were obtained. Based on gene ontology classification, several annotated UniTags corresponded to defense response, metabolism and signal transduction. Analysis of the N. tabacum transcriptome during infection identified regulatory genes implicated in a number of hormone pathways. Silencing of an mRNA induced by salicylic acid reduced the susceptibility of N. tabacum to R. solani. We provide evidence that the salicylic acid pathway was involved in disease development. This is important for further development of disease management strategies caused by this pathogen.Electronic supplementary materialThe online version of this article (10.1186/s13104-017-2934-9) contains supplementary material, which is available to authorized users.

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Tobacco leaf spot and root rot caused by Rhizoctonia solani Kühn

Cited by 81 publications

References 60 publications

Microbial taxa and functional genes shift in degraded soil with bacterial wilt

Microbial taxa and functional genes shift in degraded soil with bacterial wilt

Identification and Molecular Characterization of Nocardia sp. as a New Causal Agent of Tobacco False Broomrape

High-throughput SuperSAGE for gene expression analysis of Nicotiana tabacum–Rhizoctonia solani interaction

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