Structure of conidial walls of Fusarium culmorum

Laborda, F.; García, Irene; Uruburu, F.; Villanueva, Julio R.

doi:10.1016/s0007-1536(74)80067-7

Cited by 8 publications

(2 citation statements)

References 29 publications

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“…Sivan and Chet (1989) have explained difference in cell wall degrading enzymes activities of T. harzianum against Rhizoctonia solani, Sclerotium rolfsii and Fusarium species by protein content in their cell walls, they have argued that cell walls of Fusarium species contain more protein (7-28%) than walls of other fungi. Chemical composition analysis indicates that the hyphal wall of F. culmorum contains more protein than the cell walls of F. graminearum with only 4.5% (Laborda et al, 1974;Barbosa and Kemmelmeier, 1993). Several studies have reported that chitinase and protease involved in mycoparasitism of Trichoderma strains play an important role in the destruction of the plant pathogens.…”

Section: Discussionmentioning

confidence: 99%

Biocontrol of Wheat Fusarium Crown and Root Rot by Trichoderma spp. and Evaluation of Their Cell Wall Degrading Enzymes Activities

Dendouga¹,

Boureghda²,

Belhamra³

2016

Acta Phytopathologica et Entomologica Hungarica

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Fourteen strains of Trichoderma spp. were isolated from Algerian desert soils and assessed for their antagonistic activity against Fusarium crown and root rot of wheat. Biocontrol efficiency of Trichoderma spp. was studied by in vitro and in vivo based bioassay against three pathogenic species: F. culmorum, F. graminearum and F. verticillioides. In vitro based bioassay (dual culture) results obtained with all Trichoderma spp. isolates showed significant decrease in colony diameter of Fusarium species compared to the control. The highest percentages of reduction in colony diameter were obtained with T. harzianum Thr.4 causing a growth reduction of 70.68%, 67.05 and 70.57% against F. culmorum, F. graminearum and F. verticillioides, respectively. All Trichoderma spp. isolates were able to overgrow and sporulate above F. culmorum colonies but no overgrowth was observed with F. graminearum and F. verticilliodes. The seed treatment by Trichoderma spp. isolates before sowing in a soil already infested by the pathogens led to a significant decrease of disease severity compared to the untreated control. The highest disease index decrease (>70%) was obtained with two isolates of T. harzianum (Thr.4 and Thr.10) and T. viride Tv.6 against the three fungal pathogens. Lytic enzymes production by Trichoderma spp. isolates was tested in liquid cultures containing fungal cell walls of each pathogen as sole carbon source. Higher levels of protease and chitinase activities were induced by hyphal cell walls of F. graminearum than cell walls of F. verticillioides and F. culmorum. T. harzianum Thr.4 exhibited the highest enzyme activities with hyphal cell walls of F. graminearum and F. culmorum. However, in the medium amended with cell wall of F. verticillioides, maximal lytic activities were recorded for T. viride Tv.6.

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Section: Discussionmentioning

confidence: 99%

Biocontrol of Wheat Fusarium Crown and Root Rot by Trichoderma spp. and Evaluation of Their Cell Wall Degrading Enzymes Activities

Dendouga¹,

Boureghda²,

Belhamra³

2016

Acta Phytopathologica et Entomologica Hungarica

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“…Together these investigations provide the taxonomist with significant information. For example, the walls of conidial fungi (Subdivision Deuteromycotina) have received considerable attention from both biochemists and ultrastructuralists (Jones et al, 1972;Kitajima et al, 1972;Reisinger and Bonaly, 1972;Nozawa et al, 1973;White et al, 1973;Laborda et al, 1974;Barran et al, 1975). The formation of chlamydospores in these fungi represents an important taxonomic character.…”

Section: Wall Chemistry and Ultrastructurementioning

confidence: 99%

Contributions of Electron Microscopy to Fungal Classification

Cole

1979

Am Zool

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SYNOPSIS. Such characters as surface ultrastructure of asexual and sexual propagules, wall and septal ultrastructure, the fine structure of ascal tips, and ultrastructural aspects of nuclear division have taxonomic significance for major groups of fungi. Information derived from fine-structural analyses can be correlated with that obtained from lightmicroscopic, chemical, and developmental investigations. The versatility of electronmicroscopic facilities makes them powerful research tools in the hands of the innovative taxonomist.

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Chemistry of cell walls of Fusarium solani and the resistance of spores to microbial lysis

Eck¹

1978

Soil Biology and Biochemistry

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Structure of conidial walls of Fusarium culmorum

Cited by 8 publications

References 29 publications

Biocontrol of Wheat Fusarium Crown and Root Rot by Trichoderma spp. and Evaluation of Their Cell Wall Degrading Enzymes Activities

Biocontrol of Wheat Fusarium Crown and Root Rot by Trichoderma spp. and Evaluation of Their Cell Wall Degrading Enzymes Activities

Contributions of Electron Microscopy to Fungal Classification

Chemistry of cell walls of Fusarium solani and the resistance of spores to microbial lysis

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