Interactions between damping-off fungi, antagonists and Capsicum seedlings

Harris, A.R.; Siwek, Krzysztof; Wiseman, Bronwyn M.

doi:10.1016/s0929-1393(97)00017-6

Cited by 13 publications

(3 citation statements)

References 30 publications

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“…has been extensively studied and appears to involve the production of a variety of antibiotic compounds (Howell and Stipanovic, 1980;Sharifi-Tehrani et al, 1998;Thrane et al, 2000), competition (Mohamed and Caunter, 1995;Ellis et al, 1999) and induced resistance (Benhamou et al, 1996;Ramamoorthy et al, 2002a). P. putida, P. corrugata and P. marginalis were also reported to exert an antagonistic activity through the production of antimicrobial compounds (de Freitas et al, 1991;Harris et al, 1997), competition (Paulitz et al, 1992;Fukui et al, 1994) or induction of plant resistance mechanism (Chen et al, 1998;Ongena et al, 2000Ongena et al, , 2002). In this study, the presence of an inhibition zone occurring between the pathogens and P. fluorescens, P. putida, P. corrugata and P. marginalis in dual culture on agar plate suggests that the production of antibiotic compounds is involved in the antagonism observed in vivo.…”

Section: Discussionmentioning

confidence: 99%

Antagonist Microorganisms with the Ability to Control Pythium Damping-off of Tomato Seeds in Rockwool

et al. 2005

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A total of 237 microorganisms were isolated from five different greenhouse tomato growing media. Of those, 40 microorganisms reduced the in vitro mycelial growth of both Pythium aphanidermatum and Pythium ultimum. The ability of these microorganisms to control damping-off was then tested in rockwool. As a result, Pseudomonas corrugata strains 1 and 3, Pseudomonas fluorescens subgroup F and G strains 1, 2, 3, 4 and 5, Pseudomonas marginalis, Pseudomonas putida subgroup B strain 1, Pseudomonas syringae strain 1 and Pseudomonas viridiflava significantly reduced damping-off caused by P. ultimum or P. aphanidermatum. Pseudomonas marginalis was the only microorganism that significantly reduced damping-off caused by both pathogens.

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Section: Discussionmentioning

confidence: 99%

Antagonist Microorganisms with the Ability to Control Pythium Damping-off of Tomato Seeds in Rockwool

et al. 2005

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“…Additionally, the composition of bacterial ) and arbuscular mycorrhizal fungal (Bever et al 1996) communities in the rhizosphere can change due to influence of the host plant species, and differentiation of these communities may also generate negative feedback (Bever et al 1997, Bever 1999. Moreover, the deleterious effect of Pythium may be ameliorated by interactions with rhizosphere bacteria (Harris et al 1997). …”

Section: Introductionmentioning

confidence: 99%

“…These include rhizosphere bacteria, which have been shown to have positive and negative effects on plant growth (Albrecht et al 1981, Neitko and Frankenburg 1989, Handman et al 1991, Derylo and Skorupska 1992. Rhizosphere bacteria have also been shown to modify or eliminate the effects of other components of the soil community (e.g., Harris et al 1997, Kim et al 1997.…”

Section: Introductionmentioning

confidence: 99%

Mechanisms of Plant Species Coexistence: Roles of Rhizosphere Bacteria and Root Fungal Pathogens

Westover

Bever

2001

Ecology

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Abstract. Two independent experiments were conducted to investigate the influence of rhizosphere bacteria on the growth of Anthoxanthum odoratum and Panicum sphaerocarpon. We tested whether host-specific populations of Bacillus mycoides affected the growth of their Anthoxanthum and Panicum hosts and whether host-specific differences in Bacillus populations modified the strong detrimental effect of the root fungal pathogen, Pythium macrosporum. Our results showed both positive and negative effects of Bacillus inoculation and that Anthoxanthum and Panicum plants responded differently to Bacillus isolates that originated from different host plants. Anthoxanthum grew relatively better with isolates from Panicum, while Panicum grew relatively better with isolates from Anthoxanthum, consistent with a negative feedback. In both experiments Pythium infection was detrimental to plant growth, and Panicum was more negatively affected by inoculation with Pythium. Overall, Bacillus ameliorated the pathogenic effect of Pythium. However, there was no evidence that host-specific Bacillus populations had different effects on the interaction between these plant species and Pythium. Both host-specific differences in rhizosphere bacteria and host-specific accumulation of a fungal pathogen can generate negative feedback between these two plant species.

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Versatility of Fungal and Bacterial Isolates for Biological Control of Damping-Off Disease Caused byRhizoctonia solaniandPythiumspp.

Harris

Adkins

1999

Biological Control

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Interactions between damping-off fungi, antagonists and Capsicum seedlings

Cited by 13 publications

References 30 publications

Antagonist Microorganisms with the Ability to Control Pythium Damping-off of Tomato Seeds in Rockwool

Antagonist Microorganisms with the Ability to Control Pythium Damping-off of Tomato Seeds in Rockwool

Mechanisms of Plant Species Coexistence: Roles of Rhizosphere Bacteria and Root Fungal Pathogens

Versatility of Fungal and Bacterial Isolates for Biological Control of Damping-Off Disease Caused byRhizoctonia solaniandPythiumspp.

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