Biological Control of White Rot Disease of Onion (<i>Sclerotium cepivorum</i>) by <i>Trichoderma harzianum</i>

Abd-El-Motty, T. H.; Shatla, M.N.

doi:10.1111/j.1439-0434.1981.tb03287.x

Cited by 45 publications

(17 citation statements)

References 13 publications

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“…The percentage of survived plants wereincreased, by increasing plant extract concentration from 4 to 8% (Fig. 1B).The degree of effectiveness of plant extracts to reduce dampingoff disease of cucumber and increase the survival counts, which were in order of ginger > neem > garlic, is in agreement with the findings by Abd-El-Moity and Shatla [11] who reported that ginger extract had thehighest suppressive effect on Rhizoctonia solani, a damping-off pathogen, when added to the infected medium. This effect might be due to the presence of certain disulfide amino-acid in ginger extract [11].…”

Section: Damping-off Diseasesupporting

confidence: 90%

“…1B).The degree of effectiveness of plant extracts to reduce dampingoff disease of cucumber and increase the survival counts, which were in order of ginger > neem > garlic, is in agreement with the findings by Abd-El-Moity and Shatla [11] who reported that ginger extract had thehighest suppressive effect on Rhizoctonia solani, a damping-off pathogen, when added to the infected medium. This effect might be due to the presence of certain disulfide amino-acid in ginger extract [11]. Kurucheve and Padmauath [12] equally supported the observation of [11] that ginger extract contains well specialized materials which inhibit the activity of hydrolytic enzymes produced by the pathogen.…”

Section: Damping-off Diseasesupporting

confidence: 90%

“…This effect might be due to the presence of certain disulfide amino-acid in ginger extract [11]. Kurucheve and Padmauath [12] equally supported the observation of [11] that ginger extract contains well specialized materials which inhibit the activity of hydrolytic enzymes produced by the pathogen. This work is equally in conformity with the report of Tohamyet al [8] who observed that extract of ginger cloves was the most effective in inhibiting percentage of damping-off disease infection.Concentration level at 8% gave the highest suppressive effect on pre-and post-emergence damping off disease, followed by 4%, while 12% was the least.…”

Section: Damping-off Diseasementioning

confidence: 88%

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The Efficacy of Eco-friendly Botanicals in the Management of Damping-off and Downy Mildew Diseases of Cucumber

2016

IJSR

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Experiments were conducted in 2011 and 2012 cropping seasonsunder field conditions to investigate the possible utilization of plant material extracts to manage damping-off and downy mildew diseases of cucumber. Three plant materials, i.e. ginger rhizomes, garlic bulbs, and neem leaves were extracted using water, at three different concentrations (4, 8, and 12%), and tap water was used as a check.The results (combined for the two years) revealed that cucumber seeds treated with different plant material extracts at various concentrations significantly reduced the pre-and post-emergence damping-off diseasesand increasedthe survival counts relative to control. From4 weeks after planting, cucumber plants responded positively to weekly sprays of different plant extracts at all concentration tested and significantly suppressed the incidenceand severity of downy mildew disease and thus enhanced the relative disease control. This resulted in improved growth and yield of cucumber plants when compared tocheck.The degree of effectiveness of plant extracts in the management of damping-off and downy mildew diseases of cucumber were: ginger > neem > garlic and the most effective concentration level in this regard was 8%.

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Section: Damping-off Diseasesupporting

confidence: 90%

Section: Damping-off Diseasesupporting

confidence: 90%

Section: Damping-off Diseasementioning

confidence: 88%

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The Efficacy of Eco-friendly Botanicals in the Management of Damping-off and Downy Mildew Diseases of Cucumber

2016

IJSR

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“…Prior studies have demonstrated lysis of S. cepivorum hyphae (de Oliviera et al ., 1984) and parasitism of S. cepivorum sclerotia (Abd‐El‐Moity & Shatla, 1981). Antagonism by Trichoderma spp.…”

Section: Introductionmentioning

confidence: 99%

The process of antagonism of Sclerotium cepivorum in white rot affected onion roots by Trichoderma koningii

Metcalf

Wilson

2001

Plant Pathology

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Trichoderma koningii (strain Tr5) grew in the epidermal mucilage of onion roots without entering healthy epidermal tissue. When placed on the epidermis of Sclerotium cepivorum‐infected roots, T. koningii colonized epidermal passage cells, with little colonization of other epidermal tissues, then branched and spread throughout the root cortical tissues damaged by enzymes and toxins which diffused ahead of S. cepivorum hyphae, and impeded the path of the infection. When T. koningii colonized infected tissue, many S. cepivorum hyphae became detached at septa, cell walls dissolved and many hyphal apices burst. Contact between hyphae was not necessary for lysis to occur. T. koningii produced two endochitinases (Rf 0·15 and 0·24) and two exo‐acting chitinolytic enzymes (Rf 0·46 and 0·62) during degradation of crabshell chitin and S. cepivorum cell walls. The Rf 0·24 and 0·46 proteins were detected when T. koningii colonized S. cepivorum‐infected roots and are likely to be a component of the antagonism process.

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“…decrease the amount of the chemicals in the plant seeds Although the cyanobacteria, which constitute the which may affect human health (El-Morsy et al, 1996). largest, most diverse and most widely distributed group On the other hand, fungicides pollute the environment, of photosynthetic prokaryotes (Stanier and Cohen-Bazire, cause harmful effects to all living organisms and 1977), together with the eukaryotic algae make up of the reduce the population of the useful micro-organisms in world's biomass (Cannell, 1993), they have received little soil (Elad et al, 1980;Abdel-Moity and Shatla, 1981; attention as potential bio-control agents of plant diseases. Papavizas and Lewis, 1989;Khalifa, 1991;Khalifa et al, Yanni and Osman (1990) found that Anabaena cylindrica, 1995; Lewis et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

Biological Control of Faba Bean Pathogenic Fungi by Three Cyanobacterial Filtrates

Abo-Shady¹,

Al-ghaffar²,

Rahhal³

et al. 2007

Pakistan J. of Biological Sciences

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Abstract:The aim of the present study is to evaluate the biological control aptitude of the cyanobacteria, Anabaena subcylindrica, Nostoc muscorum and Oscillatoria angusta filtrates on the growth of the isolated pathogenic fungi from the different organs of Faba bean. Three caynobacterial (Anabaena subcylindrica, Nostoc muscorum and Oscillatoria angusta) filtrates were prepared in different concentrations and their effects on the isolated pathogenic fungi from leaves, stems and roots of Faba bean were studied. The study revealed high efficiency of the three algal filtrates on the control of the isolated pathogenic fungi from the three organs of Faba bean plants. The reduction in fungal mat growth diameter was greater than in that of the fungal dry weight showing inhibited fungal spread by greater rate. The reduction in the fungal dry weight was mostly linear and significantly correlated with the algal filtrate concentrations. The Efficient Algal Filtrate Concentration (EAFC) ranged between 104 and 461% for the three algal filtrates on the studied fungi dry weight. Complete control of the isolated fungi could be achieved by of a mixture of two algal filtrates in their EAFC and that of Nostoc muscorum + Oscillatoria angusta filtrates with an EAFC 368 and 194% were the best and economic mixture.

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Biological Control of White Rot Disease of Onion (Sclerotium cepivorum) by Trichoderma harzianum

Cited by 45 publications

References 13 publications

The Efficacy of Eco-friendly Botanicals in the Management of Damping-off and Downy Mildew Diseases of Cucumber

The Efficacy of Eco-friendly Botanicals in the Management of Damping-off and Downy Mildew Diseases of Cucumber

The process of antagonism of Sclerotium cepivorum in white rot affected onion roots by Trichoderma koningii

Biological Control of Faba Bean Pathogenic Fungi by Three Cyanobacterial Filtrates

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