Structural Aspects of the Parasitism of Sclerotia of Sclerotinia sclerotiorum (Lib.) de Bary by Coniothyrium minitans Campb.

Phillips, Alan J. L.; Price, K.R.

doi:10.1111/j.1439-0434.1983.tb00537.x

Cited by 23 publications

(8 citation statements)

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“…1983), thereby causing soft rot. Penetration, by these species and others (C. minitans, G. catenulatum and G. virens) would appear to be due to both enzymic lysis and mechanical penetration (Durrell, 1966;Jones et al, 1974;Huang & Hoes, 1976;Huang, 1978;Tu, 1980;Elad etal., 1983a, b;Phillips & Price, 1983;Tu. 1984).…”

Section: Resultsmentioning

confidence: 99%

Antagonistic activity of fungi isolated from sclerotia of Sclerotinia sclerotiorum

Zazzerini

Tosi

1985

Plant Pathology

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Fungi isolated from soils in central Italy by a baiting technique with sclerotia of Sclerotinia sclerotiorum were evaluated for their antagonism in vitro to this fungus using dual cultures and tests with sclerotia. Trichoderma spp., Coniothyrium minitans and species of Fusarium and Penicillium all showed strong antagonistic activity. Morphological alterations were observed in the mycelium of S. sclerotiorum. Trichoderma spp. and Gliocladium catenulatum killed a very high percentage (96–100%) of the sclerotia.

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Section: Resultsmentioning

confidence: 99%

Antagonistic activity of fungi isolated from sclerotia of Sclerotinia sclerotiorum

Zazzerini

Tosi

1985

Plant Pathology

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“…Although C. minitans attacks both growing hyphae (43,47,79,81) and sclerotia (20,26,46,71) of S. sclerotiorum, the control of sclerotinia wilt of sunflower is achieved only through the reduction of numbers of sclerotia, which serve as the primary inoculum (34). The hyperparasite is ineffective in preventing secondary spread of the disease by root to root contact (34).…”

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confidence: 99%

Ecological basis of biological control of soilborne plant pathogens

Huang¹

1992

Canadian Journal of Plant Pathology

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“…No appressoriumlike structures are formed during this mycoparasitism [10]. Mechanical pressure and enzymatic hydrolysis are the two main invasion methods for C. minitans to parasitize S. sclerotiorum [9,[19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Mycoparasitism illuminated by genome sequencing and digital gene expression profiling of Coniothyrium minitans, an important biocontrol fungus of the plant pathogen Sclerotinia sclerotiorum

Zhao¹,

Zhou²,

Xiè³

et al. 2019

Preprint

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BackgroundConiothyrium minitans is a mycoparasite of the notorious plant pathogen Sclerotinia sclerotiorum. To further understand the parasitism of C. minitans, here, we assembled and analyzed its genome by combining transcriptome data. ResultsThe genome of C. minitans strain ZS-1 was 39.77 Mb in 350 scaffolds. A total of 11437 predicted genes and proteins were annotated, and 30.8% of blast hits matched proteins encoded by Paraphaeosphaeria sporulosa, a worldwide soil fungus. The transcriptome of strain ZS-1 during the early interaction at 0 h, 4 h and 12 h with its host was analyzed. The detected expressed genes were involved in response to host defenses, including cell wall-degrading enzymes, transporters, secretory proteins and secondary metabolites. The fungal cell wall-degrading enzymes belonged to the GH16, GH18, and GH72 classes in CAZymes, and some were significantly up-regulated during mycoparasitism. Most of the monocarboxylate transporter genes of the major facilitator superfamily and all the detected ABC transporters, especially the heavy metal transporters, were significantly upregulated. Approximately 8% of the 11437 proteins in C. minitans were predicted to be secretory proteins, with catalytic activity, hydrolase activity, peptidase activity and serine hydrolase activity enriched in molecular function. Most genes involved in serine hydrolase activity were significantly upregulated during mycoparasitism. ConclusionThis assemble genome and genome-wide expression study demonstrate that the mycoparasitism process of C. minitans is complex and a series of genes or proteins would be deployed by C. minitans to invade successfully the host. Our study provides insights into the mechanisms of the mycoparasitism between C. minitans and S. sclerotiorum and clues to excavate active secondary metabolites from C. minitans. BackgroundConiothyrium minitans, a sclerotial mycoparasite, lives on the sclerotia of Sclerotinia sclerotiorum and its relatives in soil and was first isolated and identified in 1947 by Campbell [1]. It is distributed worldwide in America, Europe, Australia, Africa and Asia [2][3][4], and its remarkable biocontrol ability has attracted great attention. C. minitans shares similar conditions (20°C) with its host S. sclerotiorum [1,[4][5][6]. C. minitans has a narrow host range, and most of its reported hosts are fungi in the genus Sclerotinia [5]. It can parasitize the sclerotia and hypha of Sclerotinia spp. and produce antifungal substances that inhibit host growth [5,[7][8][9][10][11][12][13]. C. minitans can successfully control crop diseases caused by S. sclerotiorum in the field [14][15][16]. C. minitans destroyed the sclerotia, blocked the germination of apothecia by approximately 90% and reduced disease incidence in a bean crop by 50% [5, 17]. As the main effective constituent in commercial biological control agents, C. minitans was first registered in Germany and was used to control the diseases caused by S. sclerotiorum and S. minor in Europe, America, Oceania and Asia. In China, C. min...

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Structural Aspects of the Parasitism of Sclerotia of Sclerotinia sclerotiorum (Lib.) de Bary by Coniothyrium minitans Campb.

Cited by 23 publications

References 20 publications

Antagonistic activity of fungi isolated from sclerotia of Sclerotinia sclerotiorum

Antagonistic activity of fungi isolated from sclerotia of Sclerotinia sclerotiorum

Ecological basis of biological control of soilborne plant pathogens

Mycoparasitism illuminated by genome sequencing and digital gene expression profiling of Coniothyrium minitans, an important biocontrol fungus of the plant pathogen Sclerotinia sclerotiorum

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