The influence of biological and fungicidal seed treatments on chickpea (<i>Cicer arietinum</i>) damping off

Leisso, Rachel; Miller, Perry R.; Burrows, Mary

doi:10.1080/07060660909507570

Cited by 16 publications

(17 citation statements)

References 33 publications

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“…Results of seed treatment studies in Montana in 2007 demonstrated that mefenoxam (marketed as Apron XL LS), which targets Pythium, was highly effective in controlling damping-off on chickpea, while seed treatments containing fluidoxonil (Maxim), targeting other fungi, were less effective (Leisso et al, 2009). This suggests that Pythium spp.…”

Section: Discussionmentioning

confidence: 97%

“…These plots were part of a study of seed treatments to prevent damping-off (Leisso et al, 2009). Diseased seeds and seedlings were collected from three locations in Montana -Bozeman, Huntley, and Sidney -on 16 May, 17 May and 23 May 2007, respectively.…”

Section: Recovery and Identification Of Fusarium Spp Isolatesmentioning

confidence: 99%

“…Although studies testing seed treatments for damping-off in field settings have been conducted in the Great Plains states of the USA (e.g. Hammon & Berrada, 2001;Chen et al, 2004;Leisso et al, 2009), little published work exists addressing the identity of pathogens that cause damping-off in chickpea.…”

Section: Introductionmentioning

confidence: 98%

“…and Pythium spp. were isolated from kabuli chickpea affected by damping-off in Montana field trials at three locations in 2007 (Leisso et al, 2009). While root rot in chickpea can be caused by F. solani and F. oxysporum Schltdl.…”

Section: Introductionmentioning

confidence: 99%

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Pathogenicity ofFusariumspp. to chickpea seed and seedlings (Cicer arietinumL.)

Leisso

Miller

Jacobsen

et al. 2011

Canadian Journal of Plant Pathology

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Damping-off disease can cause severe stand loss and reduce seedling vigour of kabuli chickpea (Cicer arietinum L.). While Pythium spp. are thought to be the primary cause of damping-off in chickpea, diversity and pathogenicity of other genera have not been widely explored. In surveys of three Montana fields of chickpea affected by damping-off, Fusarium spp. were isolated from 83% of the seeds tested, and were more common than the other taxa recovered, namely Pythium and Rhizopus. Fusarium spp. were identified to species using morphological characters and sequence analysis of two loci, the internal transcribed spacer (ITS) region of ribosomal DNA and the translation elongation factor (TEF) 1-α gene. Consistently identified species were F. oxysporum Schltdl. and F. redolens Wollenw. While discrepancies between identification methods made the identity of other isolates unclear, Fusaria infecting chickpea were diverse and varied across sites. The pathogenicity of eight isolates to kabuli chickpea was tested across a gradient of soil moisture and initial propagule density. All isolates were able to cause disease on kabuli chickpea seeds and seedlings. Effects of soil moisture levels on disease incidence varied among isolates, even isolates whose TEF 1-α sequences were 100% identical. This indicates that strains within a species can vary in pathogenicity. Additionally, most isolates caused more severe disease symptoms on cotyledons than roots.Résumé: La fonte des semis peut causer de lourdes pertes au champ et réduire la vigueur des semis des pois chiches Kabuli (Cicer arietinum L.). Bien que Pythium spp. semblent être la cause première de cette maladie chez le pois chiche, la diversité et la pathogénicité d'autres genres n'ont pas été évaluées extensivement. Dans des études menées dans trois champs de pois chiches du Montana touchés par la fonte des semis, on a isolé Fusarium spp. de 83 % des semences testées et ceux-ci étaient plus courants que les autres taxons décelés, entre autres, Pythium et Rhizopus. Fusarium spp. ont été identifiés à des espèces qui utilisent les caractères morphologiques et l'analyse de séquence de deux locus, la région de l'espaceur transcrit interne (ETI) de l'ADN-r et le gène 1-α du facteur d'élongation de la traduction (FET). Les espèces qui y étaient identifiées invariablement incluaient F. oxysporum Schltdl. et F. redolens Wollenw. Tandis que des différences entre les méthodes d'identification rendaient l'identité des autres isolats incertaine, les fusariums infectant les pois chiches étaient différents et variaient d'un site à un autre. La pathogénicité de huit isolats de pois chiches Kabuli a été testée le long d'un gradient d'humidité de sol et de densité initiale de propagules. Tous les isolats ont pu transmettre la maladie aux semences et aux semis de pois chiches. Les effets des taux d'humidité du sol sur l'incidence de la maladie variaient chez les isolats, même chez ceux dont les séquences du gène 1-α du FET étaient identiques à 100 %. Ceci indique que des souches appartenant à u...

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Section: Discussionmentioning

confidence: 97%

Section: Recovery and Identification Of Fusarium Spp Isolatesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Pathogenicity ofFusariumspp. to chickpea seed and seedlings (Cicer arietinumL.)

Leisso

Miller

Jacobsen

et al. 2011

Canadian Journal of Plant Pathology

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“…인삼 모잘록병은 유묘출현이 저온에서 지연 되거나, 과도한 볏짚멀칭으로 토양에 습도가 높거나 온도가 낮을 때 문제가 되는 것으로 알려져 있다 (Hudelson and Parke, 1995). 광범위한 약효를 갖는 살균제의 종자 처리는 모잘록병을 억제하는데 효과적이나, 인축독성, 농약잔류로 인한 토양 및 수질오염 등의 문제를 일으킬 수 있으며, 살균 제의 장기간 사용은 약제저항성 균주 초래 및 토양내 근권 미생물상을 단순화 시킬 수 있다 (Leisso et al, 2009). 또한 살균제와 화학비료의 무분별한 사용으로 인한 농약잔류 문 제 및 농산물 안전성 문제는 친환경 농산물에 대한 소비자 의 관심을 증가시켜 왔다.…”

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Isolation and Characterization of Bacillus Species Having Antifungal Activity Against Pathogens of Ginseng Damping Off

Park¹,

Park²,

Lee³

et al. 2016

KJPS

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This study was performed to select potentially available biological control agent from soil bacteria for prevention of ginseng damping off. More than five hundred strains were isolated from ginseng rhizosphere soil. By testing antifungal activity, we have selected three soil bacteria strains and their ability to produce antibiotics and lytic enzymes such as cellulase, protease and pectate lyase was examined. Also, the presence of genes for biosynthesis of lipopeptide such as fengycin, bacillomycin D, surfactin, iturin A, and zwittermicin A was investigated in selected strains. All three strains produced cellulase, protease, and xylanase. Moreover, these strains had gene for biosynthesis of bacillomycin D, surfactin, and iturin A. ES1 and ES3 strains were identified Bacillus methylotrophucus and ES2 was confirmed Bacillus amyloliquefaciens using phylogenetic analysis on the basis of 16S rRNA gene sequences. In field test, control value of ES1, ES2 and ES3 treatment was 32.4%, 46.8% and 36.7%, respectively. This results indicate that antagonistic microbes with high ability of antifungal and lytic enzyme activity can be used as a useful biological control agent to control ginseng damping off.

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