Impact of seed-born Colletotrichum lindemuthianum on French bean seed quality

Ravi, S.; Doraiswamy, Sabitha; Valluvaparadisan, V.; Jeyalakshmi, C.

doi:10.1556/aphyt.34.1999.4.3

Cited by 11 publications

(8 citation statements)

References 2 publications

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“…The relationships were evident between infection levels in the pods and seed infection, as determined by seedling grow-out in laboratory tests reported by Vechiato et al [32]. These results are in line with those reported by Ravi et al [33] in that agar plate incubation was found to be the best and yielded maximum percentage of seed infection. The percentage of infected seed is an important determines factor and indicates virulence of the pathogen during the growing season since the secondary inoculum produced will be proportional to the amount of initial inoculum [34].…”

Section: Effect Of Soil Solarization and Fungicide Applications On Sesupporting

confidence: 90%

Effect of Integrated Management of Bean Anthracnose (Colletotrichum lindemuthianum Sacc. and Magn.) Through Soil Solarization and Fungicide Applications on Epidemics of the Disease and Seed Health in Hararghe Highlands, Ethiopia

Amin¹,

Ayalew²,

Dechassa³

2013

J Plant Pathol Microb

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Bean anthracnose is an important disease affecting common bean (Phaseolus vulgaris L.) in Hararghe highlands which produces common bean in large areas. The study was undertaken to evaluate the effect of integrated management of bean anthracnose through soil solarization and fungicide applications on disease development and seed health of common bean variety Mexican-142. Field experiments were conducted at Haramaya University and Hirna research station in 2010 summer season. Soil solarization was integrated with mancozeb and carbendazim seed treatments, with foliar sprays of carbendazim at the rate of 0.5 kg/ha at 10 and 20 days intervals. The experiment was arranged in 2×3×3 split-split plot design with three replications. There was significant difference in the anthracnose incidence, severity, infected pods per plant, infected seeds and AUDPC among treatments. Combined effect of mancozeb seed treatment with carbendazim spray at 10 day intervals and carbendazim seed treatment and carbendazim spray at 10 day intervals have reduced severity by 46.5% and 41%, respectively at Haramaya. Interactions of solarized soil with carbendazim foliar spray frequencies at 10 days interval reduced the number of infected pods per plant by 58% at Haramaya and 38.9% at Hirna. In the results concluded that, the integration of soil solarization, seed treatments and foliar spray were found to be effective in reducing bean anthracnose epidemics and seed infection

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Section: Effect Of Soil Solarization and Fungicide Applications On Sesupporting

confidence: 90%

Effect of Integrated Management of Bean Anthracnose (Colletotrichum lindemuthianum Sacc. and Magn.) Through Soil Solarization and Fungicide Applications on Epidemics of the Disease and Seed Health in Hararghe Highlands, Ethiopia

Amin¹,

Ayalew²,

Dechassa³

2013

J Plant Pathol Microb

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“…Neem (Azadirachta indica) seed extract effectively inhibited both germination of conidia and mycelial growth of C. lindemuthianum [52]. Seed treatment and field spray using the extracts of Lawsonia inermis significantly improved seedling emergence and reduced incidence of bean anthracnose [53].…”

Section: Biological Controlmentioning

confidence: 99%

“…The integration of soil solarization, Mancozeb seed treatment at a rate of 3 g/kg seeds and Carbendazim foliar spray at a rate of 0.5 kg/ha were found to be effective in reducing bean anthracnose epidemics [46]. Botanicals and biopesticides (10% extracts of Adenocalymma alliaceae, Azadirachta indica and Lawsonia inermis, 0.4% talc formulation of T. viride and Pseudomonas fluorescens along with fungicides (Carbendazim (0.2%) and Mancozeb (0.4%) were evaluated in a greenhouse and field experiment in India and gave promising results [53].…”

Section: Integrated Disease Managementmentioning

confidence: 99%

An Overview of Distribution, Biology and the Management of Common Bean Anthracnose

Mohammed¹

2013

J Plant Pathol Microbiol

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Bean anthracnose caused by Colletotrichum lindemuthianum (Sacc. & Magn.) is one of the most important seed borne disease of common bean (Phaseolus vulgaris L.) in the world. The disease is prevalent in areas that experience cool and wet weather conditions, causing up to 100% yield loss. Besides infecting Phaseolus vulgaris, Colletotrichum lindemuthianum also attacks other legumes like mung bean (P. aureus), cowpea (Vigna sinensis), and broad bean (Vicia faba). The disease causes symptoms to appear on leaves, stems, pods and seeds. The pathogen can survive in seeds for up to five years, and is also known to overwinter in crop debris. Seed infection is the primary means by which the pathogen spreads. Therefore, the production and the use of certified seeds is one control measure that is effective in dealing with the disease. Fungicidal seed treatment and foliar application as well as cultural and biological methods are very important for bean anthracnose management. Further information on biology and survival of C. lindemuthianum is needed to devise more effective management strategies. In this review attention were given to the biology and management options, with an emphasis on the future research priorities.

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“…Pod infection usually leads to seed infection and discoloration (Schwartz et al, 2005). Seed infection has been shown to reduce germination and seedling vigour (Ravi et al, 1999). The use of pathogen-free seed is one of the key components in an integrated strategy for the control of this disease (Schwartz et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

A quantitative real‐time PCR assay for detection of Colletotrichum lindemuthianum in navy bean seeds

et al. 2012

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Bean anthracnose is a seedborne disease of common bean (Phaseolus vulgaris) caused by the fungal pathogen Colletotrichum lindemuthianum. Using seed that did not test positive for the pathogen has been proven to be an effective strategy for bean anthracnose control. To quantify the extent of anthracnose seed infection, a real-time PCR-based diagnostic assay was developed for detecting C. lindemuthianum in seeds of the commercial bean class navy bean. The ribosomal DNA (rDNA) region consisting of part of the18S rDNA, 5. 8S rDNA, internal transcribed spacers (ITS) 1, 2 and part of the 28S rDNA of seven races of C. lindemuthianum, 21 isolates of Colletotrichum species and nine other bean pathogens were sequenced with the universal primer set ITS5/ITS4. Based on the aligned sequence matrix, one primer set and a probe were designed for a SYBR Green dye assay and a TaqMan MGB (minor groove binder) assay. The primer set was demonstrated to be specific for C. lindemuthianum and showed a high sensitivity for the target pathogen. The detection limit of both assays was 5 fg of C. lindemuthianum genomic DNA. To explore the correlation between the lesion area and the DNA amount of C. lindemuthianum in bean seed, seeds of the navy bean cultivar Navigator with lesions of different sizes, as well as symptomless seeds, were used in both real-time PCR assays.

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Impact of seed-born Colletotrichum lindemuthianum on French bean seed quality

Cited by 11 publications

References 2 publications

Effect of Integrated Management of Bean Anthracnose (Colletotrichum lindemuthianum Sacc. and Magn.) Through Soil Solarization and Fungicide Applications on Epidemics of the Disease and Seed Health in Hararghe Highlands, Ethiopia

Effect of Integrated Management of Bean Anthracnose (Colletotrichum lindemuthianum Sacc. and Magn.) Through Soil Solarization and Fungicide Applications on Epidemics of the Disease and Seed Health in Hararghe Highlands, Ethiopia

An Overview of Distribution, Biology and the Management of Common Bean Anthracnose

A quantitative real‐time PCR assay for detection of Colletotrichum lindemuthianum in navy bean seeds

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