Host Range Studies of Rice Sheath Blight Fungus Rhizoctonia solani (Kuhn)

Nagaraj, B. T.; Sunkad, Gururaj; Pramesh, D.; Naik, M. K.; Patil, Manjunath

doi:10.20546/ijcmas.2017.611.452

Cited by 17 publications

(12 citation statements)

References 16 publications

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“…B. Frank) Donk.) is a common soil-borne Basidiomycete fungus that can infect a vast range of plant species including field crops, horticulture crops, and weeds [1,2]. The pathogen is classified into 14 anastomosis groups (AG1 to to understand the general and specific interaction of R. solani with different rice genotypes.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Gene Expression Profile of Pectin Degradation Enzymes Reveals the Molecular Events during Cell Wall Degradation and Pathogenesis of Rice Sheath Blight Pathogen Rhizoctonia solani AG1-IA

Rao

Chopperla

Prathi

et al. 2020

JoF

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Sheath blight disease of rice caused by Rhizoctonia solani Kühn (teleomorph: Thanatephorus cucumeris) remains a global challenge due to the absence of reliable resistance genes and poor understanding of pathogen biology. Pectin, one of the most vital constituents of the plant cell wall, is targeted by pectin methylesterases, polygalacturonases, and few other enzymes of fungal pathogens. In this study, we catalogued the expressed genes of the fungal genome from RNAseq of R. solani infected four rice genotypes. Analysis of RNAseq revealed 3325 pathogen genes commonly expressed in all rice genotypes, in which 49, 490, and 83 genes were specific to BPT5204, Tetep, and Pankaj genotypes, respectively. To identify the early and late responding genes of R. solani during plant cell wall degradation, a real-time PCR analysis of 30 pectinolytic enzymes was done at six different time points after inoculation. The majority of these genes showed maximum induction at the 72 h time point, suggesting that it is the most crucial stage of infection. Pankaj showed lesser induction of these genes as compared to other genotypes. Leaf-blade tissue and 45 days old-growth stage are more favorable for the expression of pectin degradation genes of R. solani. Additionally, the expression analysis of these genes from four different strains of R. solani suggested differential regulation of genes but no distinct expression pattern between highly virulent and mild strains. The implications of the differential regulation of these genes in disease development have been discussed. This study provides the first such comprehensive analysis of R. solani genes encoding pectin degrading enzymes, which would help to decipher the pathogen biology and sheath blight disease development.

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Section: Introductionmentioning

confidence: 99%

A Comprehensive Gene Expression Profile of Pectin Degradation Enzymes Reveals the Molecular Events during Cell Wall Degradation and Pathogenesis of Rice Sheath Blight Pathogen Rhizoctonia solani AG1-IA

Rao

Chopperla

Prathi

et al. 2020

JoF

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“…It is the causal organism of sheath blight of rice and has wide host range, it causes banded leaf in maize, rice and sorghum, dampingoff in cotton, stem rot in green gram and soybean, sheath rot in sugarcane, heart rot in cabbage, black scurf in potato and leaf blights of fruits and plantation crops. The pathogen is also capable of causing root rot, collar rot, stem canker, crown rot, bud and fruit rots on a variety of susceptible agriculturally important causing considerable economic loss worldwide (Nagaraj et al, 2017). Rhizoctonia solani is a complex species comprising of least 13 related but distinct genetically anastomosis groups (AGs) (Carling et al, 2002a).Rhizoctonia solani (AG-1 IA) is considered to cause rice sheath blight disease throughout tropical and subtropical rice growing areas and Binucleate Rhizoctonia isolates were associated with diseased potato plants (Tsror, 2010).…”

Section: Rhizoctonia Solanimentioning

confidence: 99%

Potential of Mycovirus in the Biological Control of Fungal Plant Pathogens: A Review

Longkumer

Ahmad

2020

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Fungal pathogenic populations such as Sclerotinia, Rhizoctonia and Fusarium are ubiquitous and have broad range of host enabling them to cause a severe infection resulting in huge yield losses. Albeit the various tactics such as cultural, mechanical implemented to counteract the havoc, it still creates a formidable challenge to the researchers to keep the pathogenic population below threshold. From Eco-friendly sustenance perspective, Biological control can play a vital role in combination along with the other efficient tactics. In field condition various strains are available having two characters namely virulent and hypovirulent, the latter may exhibit hypovirulent nature genetically or due to the invasion of mycoviruses becomes hypovirulent. In both the cases are of interest to the researchers in studying the biological control exhibited by the mycoviruses. The biocontrol agents include Mycoviruses, which plays a significant role in infecting the virulent fungal pathogen by reducing their virulence giving to a phenomenon known as Hypovirulence. Their genome consist of mostly dsRNA and others include +ssRNA, -ssRNA and dsDNA. These studies in fungal and viral interaction can lead to the development of novel biological control strategies and help us to explore upto the molecular level.

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“…Tanaman palawija yang biasa digunakan untuk pergiliran tanaman dapat terinfeksi R. solani. Gulma dan serasah jerami di sekitar pematang dapat menjadi inang alternatif bagi penyebaran penyakit hawar pelepah (Nuryanto et al 2010;Nagaraj et al 2017). Pengendalian penyakit hawar pelepah harus didasarkan pada periode kritis tanaman terhadap infeksi patogen agar kehilangan hasil dapat ditekan.…”

Section: Perbanyakan Inokulum R Solani Dilakukan DIunclassified

Periode Kritis Perkembangan Tanaman Padi terhadap Penyakit Hawar Pelepah (Rhizoctonia solani) dan Pengaruhnya terhadap Hasil

Milati

Nuryanto²

2019

j. penelit. pertan. tanam. pangan

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Sheath blight is a major disease of rice caused by Rhizoctonia solani. A screen house test was conducted to determine the critical stages of rice plant growth to the pathogen infection That cause rice yield reduction. Three rice varieties namely Ciherang, Minghui 63, and Hipa Jatim 2 were inoculated with R. solani inoculum at four different plant growth stages (maximum tillering, panicle initiation, flowering, and maturity) during dry and wet season. Results showed that the disease severities among plots inoculated at different plant stages as calculated in the form of Area Under the Disease Progress Curve (AUDPC) varied markedly. AUDPC values were the highest when the plants were inoculated at their maximum tillering and booting stages. Rice yield loss was higher in plot with a higher values of AUDPC. There were no significant differences in disease severities between resistant and susceptible rice varieties. The seemingly suitable control for sheath blight is when the plant enter the maximum tillering stage to minimize the rice yield loss.

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Host Range Studies of Rice Sheath Blight Fungus Rhizoctonia solani (Kuhn)

Cited by 17 publications

References 16 publications

A Comprehensive Gene Expression Profile of Pectin Degradation Enzymes Reveals the Molecular Events during Cell Wall Degradation and Pathogenesis of Rice Sheath Blight Pathogen Rhizoctonia solani AG1-IA

A Comprehensive Gene Expression Profile of Pectin Degradation Enzymes Reveals the Molecular Events during Cell Wall Degradation and Pathogenesis of Rice Sheath Blight Pathogen Rhizoctonia solani AG1-IA

Potential of Mycovirus in the Biological Control of Fungal Plant Pathogens: A Review

Periode Kritis Perkembangan Tanaman Padi terhadap Penyakit Hawar Pelepah (Rhizoctonia solani) dan Pengaruhnya terhadap Hasil

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