Biocontrol efficacy of Trichoderma isolates for tan spot of wheat in Argentina

Perelló, A. E.; Mónaco, Cecilia Inés; Simón, Marı́a Rosa; Sisterna, Marina Noemí; Bello, G. M. Dal

doi:10.1016/s0261-2194(03)00143-1

Cited by 59 publications

(52 citation statements)

References 24 publications

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“…Management through fungicidal chemistries is only effective when the levels of initial inoculum were not high as the quantity of Rhizoctonia solani on tubers increases, the effectiveness of fungicides decreases (Tsror & Peretz, 2005 (Perello et al, 2003;Otadoh et al, 2011;Singh et al, 2008;Wilson et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Occurrence of Black Scurf Disease of Potato in Multan (Punjab) Alongwith Its in vitro Chemical and Biotic Elicitor Mediated Management

Malik¹,

Chohan²,

Naqvi³

2014

JAS

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Black scurf disease of potato, caused by fungus Rhizoctonia solani, is the most common and one of the oldest diseases of potato affecting stem and stolons. In recent years, the disease is reportedly present in the fields of potato in Pakistan especially in Punjab. Survey of different locations viz. Narangaabad, Band Bosan, Kaian Pur, Kotla Abdul-Fateh and Dhillun was conducted to assess the prevalence of disease in Multan region. Maximum disease incidence and severity of 95.00% and 3.1 rating, was recorded in Kotla Abdul-Fateh respectively. Sclerotial pieces showing characteristic symptoms of black scurf were detached from tuber surface and the fungus was isolated on potato dextrose agar medium. For in-vitro chemical and biotic elicitor testing, three different fungicides viz., Monceren, Topsin-M, and Triton were evaluated using poisoned food technique and antagonistic effect of two accessions of Triochoderma spp. viz. Trichoderma harzianum and Trichoderma viridae was determined against the sensitivity of fungus. Triton was found to be superior at all concentrations in inhibiting the radial mycelial growth of the fungus followed by Topsin-M and Monceren. Satisfactory results were obtained by the antagonistic effect of Trichoderma harzinaum and Trichoderma viridae with 70.00% and 66.00% respectively under in-vitro conditions. Although the fungicide chemistries exclusively control the fungus yet the evaluation of bioagents also remained prolific towards antagonism against Rhizoctonia solani. These investigations provide fresh information on the current status of black scurf disease of potato in fields of Multan and regarding the biochemical management against Rhizoctonia solani under in-vitro conditions and serve as a guide for the future prospects against this holistic disease.

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Section: Discussionmentioning

confidence: 99%

Occurrence of Black Scurf Disease of Potato in Multan (Punjab) Alongwith Its in vitro Chemical and Biotic Elicitor Mediated Management

Malik¹,

Chohan²,

Naqvi³

2014

JAS

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“…In case of Trichoderma spp., diverse mechanisms have been reported such as production of a wide range of broad spectrum antifungal metabolites, mycoparasitism, competition with the pathogen for nutrients and for occupation of the infection court, induced resistance, production of protease and fungal cell wall degrading enzymes (DENIS & WEBSTER 1971;ELAD 2000;PERELLO et al 2003).…”

Section: Discussionmentioning

confidence: 99%

Rapid detection of Ganoderma disease of coconut and assessment of inhibition effect of various control measures by immunoassay and PCR

Karthikeyan¹,

Radhika²,

Bhaskaran³

et al. 2006

Plant Prot. Sci.

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Molecular and immunological methods were applied for detecting the Ganoderma disease of coconut. Polyclonal antibodies (PAbs) raised against basidiocarp protein of Ganoderma were used. For the polymerase chain reaction (PCR) tests, the primer generated from the internal transcribed spacer region one (ITS 1) of ribosomal DNA gene of Ganoderma, which produced a PCR product of 167 bp in size, was used. Apparently healthy palms in two coconut gardens were tested for Ganoderma disease by ELISA test using basidiocarp protein antiserum. Field trials were laid out in these early-diagnosed palms for the management of the disease. Based on the ELISA results, Pseudomonas fluorescens + Trichoderma viride with chitin amended treatments arrested the multiplication of the pathogen and within 6 months showed an optical density (OD) below the level of infected plants. Integrated Disease Management (IDM) and fungicide tridemorph treated palms showed OD values below infection level within 7 months, and T. harzianum and P. fluorescens + T. viride treated palms showed OD values below infection level in 8 months.

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“…The control of diseases in faba bean mainly relies on chemical treatments. However, a number of authors indicate that the effect of leaf pathogens can be reduced by biological control with Tricho-derma [7][8][9][10]. Certainly, the suppression of plant pathogens can be achieved by a range of control methods that differ in their effectiveness, duration and cost [11], but to achieve the rational management of disease a number of factors need to be taken into account, such as the variation of prevalence (from year to year and from place to place) and disease intensity.…”

Section: Introductionmentioning

confidence: 99%

Control of Leaf Spot Diseases on Ecotypes of Faba Bean (Vicia faba L.) Produced in the Andean Region of Bolivia

Coca-Morante¹,

Mamani-Álvarez²

2012

AJPS

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The basin of Lake Titicaca is a faba bean-producing microregion of Bolivia where the crop is destined for export. The most commonly cultivated ecotypes "Gigante de Copacabana" and "Usnayo" are affected by diseases that can cause production losses. The aims of the present work were to identify the causal agents of leaf spot affecting these ecotypes, to record disease intensity levels, and to estimate their effect on production. In 2004 and 2005, leaflet, stem and pod samples were taken from faba bean plants with leaf spot growing in the Lake Titicaca area, and from plants in an experimental plot established to determine the effect of five different treatments on production and disease intensity: T 1 = Control; T 2 = seed treatment with Trichoderma sp. + alternate foliar spraying with benomyl and mancozeb; T 3 = seed treatment with fludioxanil/metalaxyl M + alternate foliar spraying with benomyl and mancozeb; T 4 = foliar spraying with Trichoderma sp.; T 5 = alternate foliar spraying with cymoxanyl and mancozeb-chlorothalonil. Microscopic analysis of the samples revealed the presence of new fungal pathogens for faba beans in Bolivia (Cladosporium sp., and Lepthosphaerulina sp.) as well as emerging fungal pathogens (Botrytis cinerea, B. fabae, Ascochyta fabae, Alternaria sp. and Cercospora sp.). None of the treatments affected the disease progression curve (DPC) for incidence, although effects were seen with respect to disease severity. The seed + foliar treatments (T 2 and T 3 ) were more effective at controlling disease than leaf treatments on their own (T 4 and T 5 ). Modelling analysis showed faba bean leaf spot disease to be moderately destructive. Compared to chemical treatments, biocontrol with Trichoderma spp. preliminary was found to provide good control of the disease. Losses due to leaf spot disease of 36% were recorded, and a strong correlation detected between yield and disease severity.

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Biocontrol efficacy of Trichoderma isolates for tan spot of wheat in Argentina

Cited by 59 publications

References 24 publications

Occurrence of Black Scurf Disease of Potato in Multan (Punjab) Alongwith Its in vitro Chemical and Biotic Elicitor Mediated Management

Occurrence of Black Scurf Disease of Potato in Multan (Punjab) Alongwith Its in vitro Chemical and Biotic Elicitor Mediated Management

Rapid detection of Ganoderma disease of coconut and assessment of inhibition effect of various control measures by immunoassay and PCR

Control of Leaf Spot Diseases on Ecotypes of Faba Bean (<i>Vicia faba</i> L.) Produced in the Andean Region of Bolivia

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Biocontrol efficacy of Trichoderma isolates for tan spot of wheat in Argentina

Cited by 59 publications

References 24 publications

Occurrence of Black Scurf Disease of Potato in Multan (Punjab) Alongwith Its in vitro Chemical and Biotic Elicitor Mediated Management

Occurrence of Black Scurf Disease of Potato in Multan (Punjab) Alongwith Its in vitro Chemical and Biotic Elicitor Mediated Management

Rapid detection of Ganoderma disease of coconut and assessment of inhibition effect of various control measures by immunoassay and PCR

Control of Leaf Spot Diseases on Ecotypes of Faba Bean (&lt;i&gt;Vicia faba&lt;/i&gt; L.) Produced in the Andean Region of Bolivia

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Control of Leaf Spot Diseases on Ecotypes of Faba Bean (<i>Vicia faba</i> L.) Produced in the Andean Region of Bolivia