Genome analysis provides insight about pathogenesis of Indian strains of Rhizoctonia solani in rice

Ghosh, Srayan; Mirza, Neelofar; Kanwar, Poonam; Tyagi, Kriti; Jha, Gopaljee

doi:10.1007/s10142-019-00687-y

Cited by 16 publications

(19 citation statements)

References 60 publications

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“…Furthermore, the cytochrome P450s (CYPs)-encoding genes involving in the biosynthesis of primary and secondary metabolites including phytotoxins are differentially regulated during R. solani infection and sclerotial development, implying that the CYPs and CYP -associated genes contribute to R. solani pathogenicity (Shu et al 2019 ; Xia et al 2017 ). These findings further highlight the essentiality of secondary metabolites in R. solani pathogenicity (Ghosh et al 2019 ; Keller et al 2005 ; Vidhyasekaran et al 1997 ; Yang et al 2014 ).…”

Section: Pathogenicity Factors In R Solanimentioning

confidence: 72%

“…Bacteria and fungi are also able to produce oxalate decarboxylases (ODCs) to inhibit OA accumulation (Liang et al 2015 ; Qi et al 2017 ). During R. solani colonization of host plants, several ODC genes were significantly up-regulated (Ghosh et al 2019 ; Liang et al 2015 ). The ODC genes are essential for the formation of appressorium in S. sclerotiorum , another necrotrophic fungal pathogen, probably because ODCs function in OA detoxification and pH homeostasis or contribute to catabolic energy generation (Liang et al 2015 ).…”

Section: Countermeasures From the Hostmentioning

confidence: 99%

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Strategies to Manage Rice Sheath Blight: Lessons from Interactions between Rice and Rhizoctonia solani

Wei

et al. 2021

Rice

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Rhizoctonia solani is an important phytopathogenic fungus with a wide host range and worldwide distribution. The anastomosis group AG1 IA of R. solani has been identified as the predominant causal agent of rice sheath blight, one of the most devastating diseases of crop plants. As a necrotrophic pathogen, R. solani exhibits many characteristics different from biotrophic and hemi-biotrophic pathogens during co-evolutionary interaction with host plants. Various types of secondary metabolites, carbohydrate-active enzymes, secreted proteins and effectors have been revealed to be essential pathogenicity factors in R. solani. Meanwhile, reactive oxygen species, phytohormone signaling, transcription factors and many other defense-associated genes have been identified to contribute to sheath blight resistance in rice. Here, we summarize the recent advances in studies on molecular interactions between rice and R. solani. Based on knowledge of rice-R. solani interactions and sheath blight resistance QTLs, multiple effective strategies have been developed to generate rice cultivars with enhanced sheath blight resistance.

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Section: Pathogenicity Factors In R Solanimentioning

confidence: 72%

Section: Countermeasures From the Hostmentioning

confidence: 99%

Strategies to Manage Rice Sheath Blight: Lessons from Interactions between Rice and Rhizoctonia solani

Wei

et al. 2021

Rice

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“…Similarly, inhibitor I9 containing proteins have been abundantly detected in the predicted secretome of ShB pathogen (Anderson et al , ). In a recent genomic analysis of two virulent Indian strains of R. solani AG1‐1A, several putative candidate effectors such as histone acetyltransferase, histone deacetylase inhibitor, MDR transporter, O‐antigen biosynthesis protein, O‐methyl sterigmatocystin oxidoreductase, polygalacturonase and pectin lyase have been predicted (Ghosh et al , ). A total of 44 putative effector transcripts were found to be up‐regulated in R. solani AG1‐1A from different hosts, including rice (Xia et al , ).…”

Section: Molecular Interplay Between Rice and R Solanimentioning

confidence: 99%

Understanding sheath blight resistance in rice: the road behind and the road ahead

Molla

Karmakar

Molla

et al. 2020

Plant Biotechnology Journal

180

163

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Summary Rice sheath blight disease, caused by the basidiomycetous necrotroph Rhizoctonia solani, became one of the major threats to the rice cultivation worldwide, especially after the adoption of high‐yielding varieties. The pathogen is challenging to manage because of its extensively broad host range and high genetic variability and also due to the inability to find any satisfactory level of natural resistance from the available rice germplasm. It is high time to find remedies to combat the pathogen for reducing rice yield losses and subsequently to minimize the threat to global food security. The development of genetic resistance is one of the alternative means to avoid the use of hazardous chemical fungicides. This review mainly focuses on the effort of better understanding the host–pathogen relationship, finding the gene loci/markers imparting resistance response and modifying the host genome through transgenic development. The latest development and trend in the R. solani–rice pathosystem research with gap analysis are provided.

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“…High-molecular weight DNA was extracted from R . solani AG1-IA strain BRS1, as described earlier 7 and genomic DNA fragment library was constructed for PacBio SMRT (single molecule real time) sequencing, as per the manufacturer’s instructions. A total of 13.74 Gb (∼300x) sequence data was generated from two PacBio Sequel runs.…”

Section: Methodsmentioning

confidence: 99%

Genome duplication and transposon mediated gene alteration shapes the pathogenicity of Rhizoctonia solani AG1-IA

Francis

Ghosh

Tyagi

et al. 2022

Preprint

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Rhizoctonia solani AG1-IA is a polyphagous basidiomycete fungal pathogen that causes sheath blight disease in rice. In a high-quality genome assembly-based analysis, we report a recent whole genome duplication in R. solani AG1-IA. Duplicated syntenic gene blocks showed presence of district clusters of transposable elements (TEs), which introduced disruption in the continuity of synteny and caused alterations in gene structures. Genome duplication followed by TE-mediated gene structure alterations caused neofunctionalization of genes associated with pathogenicity, as experimentally shown by variation in expression patterns and their involvement during plant colonization. High throughput genome sequencing of forty-two rice field isolates of R. solani AG1-IA from different agro-climatic zones of India profiled the population genetic structure of the Indian isolates and classified those into three distinct groups and a subgroup of admixture, emphasizing exchange of genetic material under field conditions. Genetic diversity analysis of this population predicted the regions that are that are targets for diversifying and purifying selections. Experimental evidence showed that the genes undergoing diversifying and purifying selections were essential for pathogenicity. Together, our data and the analysis revealed profound impact of genome duplication and the transposable elements on genomic diversity and evolution that shaped the pathogenicity of R. solani AG1-IA.

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Genome analysis provides insight about pathogenesis of Indian strains of Rhizoctonia solani in rice

Cited by 16 publications

References 60 publications

Strategies to Manage Rice Sheath Blight: Lessons from Interactions between Rice and Rhizoctonia solani

Strategies to Manage Rice Sheath Blight: Lessons from Interactions between Rice and Rhizoctonia solani

Understanding sheath blight resistance in rice: the road behind and the road ahead

Genome duplication and transposon mediated gene alteration shapes the pathogenicity of Rhizoctonia solani AG1-IA

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