Taxonomy of the Sugar-Cane Smuts

Mundkur, B. B.

doi:10.2307/4118167

Cited by 8 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Sugarcane smut has been an increasing large problem in almost all countries where sugarcane is grown. It was first reported in 1877 in the Natal region of South Africa [ 1 ]. Sugarcane smut can cause substantial losses in cane yield and sugar content in susceptible varieties.…”

Section: Introductionmentioning

confidence: 99%

“…The infected plants have increased tillering that results in more slender and much weaker leaves. The most recognizable characteristic of this disease is a black or gray outgrowth of a whip-like structure that is referred to as a “smut whip” [ 1 ] (Figure 1 ). These structures emerge from the terminal bud or from the lateral shoots of infected stalks and are composed of both plant and fungal tissues (Figure 1 ).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Genome sequencing of Sporisorium scitamineum provides insights into the pathogenic mechanisms of sugarcane smut

et al. 2014

View full text Add to dashboard Cite

BackgroundSugarcane smut can cause losses in cane yield and sugar content that range from 30% to total crop failure. Losses tend to increase with the passage of years. Sporisorium scitamineum is the fungus that causes sugarcane smut. This fungus has the potential to infect all sugarcane species unless a species is resistant to biotrophic fungal pathogens. However, it remains unclear how the fungus breaks through the cell walls of sugarcane and causes the formation of black or gray whip-like structures on the sugarcane plants.ResultsHere, we report the first high-quality genome sequence of S. scitamineum assembled de novo with a contig N50 of 41 kb, a scaffold N50 of 884 kb and genome size 19.8 Mb, containing an estimated 6,636 genes. This phytopathogen can utilize a wide range of carbon and nitrogen sources. A reduced set of genes encoding plant cell wall hydrolytic enzymes leads to its biotrophic lifestyle, in which damage to the host should be minimized. As a bipolar mating fungus, a and b loci are linked and the mating-type locus segregates as a single locus. The S. scitamineum genome has only 6 G protein-coupled receptors (GPCRs) grouped into five classes, which are responsible for transducing extracellular signals into intracellular responses, however, the genome is without any PTH11-like GPCR. There are 192 virulence associated genes in the genome of S. scitamineum, among which 31 expressed in all the stages, which mainly encode for energy metabolism and redox of short-chain compound related enzymes. Sixty-eight candidates for secreted effector proteins (CSEPs) were found in the genome of S. scitamineum, and 32 of them expressed in the different stages of sugarcane infection, which are probably involved in infection and/or triggering defense responses. There are two non-ribosomal peptide synthetase (NRPS) gene clusters that are involved in the generation of ferrichrome and ferrichrome A, while the terpenes gene cluster is composed of three unknown function genes and seven biosynthesis related genes.ConclusionsAs a destructive pathogen to sugar industry, the S. scitamineum genome will facilitate future research on the genomic basis and the pathogenic mechanisms of sugarcane smut.Electronic supplementary materialThe online version of this article (doi:10.1186/1471-2164-15-996) contains supplementary material, which is available to authorized users.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genome sequencing of Sporisorium scitamineum provides insights into the pathogenic mechanisms of sugarcane smut

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Classification of Ustilago scitaminea H&P Sydow, the causal agent of sugarcane smut disease is based mainly on differences in spore morphology and the characteristics of germinating spores [1]. Based on spore size and following the examination of 73 collections of sugarcane smut, Mundkur [2] grouped this species into two varieties. Smut races have subsequently been reported based both on observations and inoculation studies [3,4].…”

Section: Introductionmentioning

confidence: 99%

Molecular profiling demonstrates limited diversity amongst geographically separate strains ofUstilago scitaminea

Singh¹,

Somai²,

Pillay³

2005

FEMS Microbiology Letters

View full text Add to dashboard Cite

Intraspecies diversity within Ustilago scitaminea isolates from South Africa, Reunion Island, Hawaii and Guadeloupe was assessed by RAPDs, bE mating-type gene detection, rDNA sequence analysis, microscopy and germination and morphological studies. Except for sequence data, the other analyses yielded no differences in the isolates that could be used in a phylogenetic separation. Mycelial DNA of the SA isolate shared 100% sequence identity with that of mycelial DNA cultured from in vitro produced teliospores of the parent cultivar. Overall the ITS1 and ITS2 regions were found to have 96.1% and 96.9% sequence identity with a total of 17 and 21 base changes, respectively, amongst the isolates. The Reunion Island isolate was shown to be most distantly related by 3.6% to the other isolates, indicating a single clonal lineage. The lack of germination in teliospores from Guadeloupe may be attributed to changes in temperature and humidity during transportation.

show abstract

“…Primeiramente, o patógeno do carvão, foi descrito e identificado em 1870 (MUNDKUR, 1939) et al, : BAKKEREN et al, 1992ALBERT e SCHENCK, 1996). O locus a apresenta dois genes os quais codificam um lipopeptídeo com função de feromônio e um receptor de feromônio.…”

Section: Fungo Sporisorium Scitamineumunclassified

Caracterização de genes associados ao tipo de reação sexual em Sporisorium scitamineum, agente causador do carvão da cana-de-açúcar

Kmit¹

View full text Add to dashboard Cite

Taxonomy of the Sugar-Cane Smuts

Cited by 8 publications

References 0 publications

Genome sequencing of Sporisorium scitamineum provides insights into the pathogenic mechanisms of sugarcane smut

Genome sequencing of Sporisorium scitamineum provides insights into the pathogenic mechanisms of sugarcane smut

Molecular profiling demonstrates limited diversity amongst geographically separate strains ofUstilago scitaminea

Caracterização de genes associados ao tipo de reação sexual em Sporisorium scitamineum, agente causador do carvão da cana-de-açúcar

Contact Info

Product

Resources

About