Solid formulations of binucleate Rhizoctonia isolates suppress Rhizoctonia solani and Pythium ultimum in potting medium

Harris, A.R.

doi:10.1016/s0944-5013(00)80007-5

Cited by 13 publications

(6 citation statements)

References 22 publications

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“…A naturally occurring hypovirulent isolate of Phytophthora nicotianae was found to effectively control citrus root rot caused by P. nicotianae and P. palmivora (Colburn and Graham 2007). In another study binucleate isolates of Rhizoctonia solani were effective at controlling damping off diseases in pepper caused by Rhizoctonia solani or Pthyium ultimum (Harris 2000). Hypovirulent isolates of the Chestnut Blight disease pathogen Cryphonectria parasitica were widely and successfully used to control the disease in chestnut trees (Nuss 2005).…”

Section: Where Do Bcas Come Frommentioning

confidence: 99%

Biological control of plant diseases

O’Brien

2017

Australasian Plant Pathol.

273

150

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Biological control is the control of disease by the application of biological agents to a host animal or plant that prevents the development of disease by a pathogen. With regard to plant diseases the biocontrol agents are usually bacterial or fungal strains isolated from the endosphere or rhizosphere. Viruses can also be used as biocontrol agents and there is a resurgent interest in the use of bacterial viruses for control of plant diseases. The degree of disease suppression achieved with biological agents can be comparable to that achieved with chemicals. Our understanding of the ways in which biocontrol agents protect plants from disease has developed considerably in recent years with the application of genomics and genetic modification techniques. We have uncovered mechanisms by which biocontrol agents interact with the host plant and other members of the microbial community associated with the plant. Understanding these mechanisms is crucial to the isolation of effective biocontrol agents and the development of biocontrol strategies for plant diseases. This review looks at recent developments in our understanding of biocontrol agents for plant diseases and how they work.

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Section: Where Do Bcas Come Frommentioning

confidence: 99%

Biological control of plant diseases

O’Brien

2017

Australasian Plant Pathol.

273

150

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“…In addition to AG-3 PT, AG-1, AG-2, AG-4, AG-5, AG-6, AG-7, AG-8, AG-9, AG-10, AG-11, AG-12, and AG-13 were also reported to cause Rhizoctonia disease on potato [ 35 , 36 , 39 , 40 , 41 , 42 , 43 , 44 , 45 ]. In addition, BNR, used to protect potatoes against MNR previously [ 46 , 47 ], was proven to cause slight symptoms of stem canker on potatoes, such as AG-A, AG-F, AG-G, AG-I, AG-K, AG-U, and AG-W [ 48 , 49 , 50 , 51 , 52 ].…”

Section: Introductionmentioning

confidence: 99%

Diversity of Mycoviruses Present in Strains of Binucleate Rhizoctonia and Multinucleate Rhizoctonia, Causal Agents for Potato Stem Canker or Black Scurf

Yang

et al. 2023

JoF

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In this study, the diversity of putative mycoviruses present in 66 strains of binucleate Rhizoctonia (BNR, including anastomosis group (AG)-A, AG-Fa, AG-K, and AG-W) and 192 strains of multinucleate Rhizoctonia (MNR, including AG-1-IA, AG-2-1, AG-3 PT, AG-4HGI, AG-4HGII, AG-4HGIII, and AG-5), which are the causal agents of potato stem canker or black scurf, was studied using metatranscriptome sequencing. The number of contigs related to mycoviruses identified from BNR and MNR was 173 and 485, respectively. On average, each strain of BNR accommodated 2.62 putative mycoviruses, while each strain of MNR accommodated 2.53 putative mycoviruses. Putative mycoviruses detected in both BNR and MNR contained positive single-stranded RNA (+ssRNA), double-stranded RNA (dsRNA), and negative single-stranded RNA (-ssRNA) genomes, with +ssRNA genome being the prevalent nucleic acid type (82.08% in BNR and 75.46% in MNR). Except for 3 unclassified, 170 putative mycoviruses found in BNR belonged to 13 families; excluding 33 unclassified, 452 putative mycoviruses found in MNR belonged to 19 families. Through genome organization, multiple alignments, and phylogenetic analyses, 4 new parititviruses, 39 novel mitoviruses, and 4 new hypoviruses with nearly whole genome were detected in the 258 strains of BNR and MNR.

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“…Most of these binucleate Rhizoctonia spp. were non-pathogenic and were considered to have potential for biocontrol (Harris 2000). Pathogenic binucleate Rhizoctonia spp.…”

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confidence: 99%

rDNA-based characterization of a new binucleate Rhizoctonia spp. causing root rot on kale in Brazil

et al. 2007

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In this paper we present the first report of the occurrence of a binucleate Rhizoctonia spp. causing hypocotyl and root rot in kale in Brazil. Rhizoctonia spp. were isolated from kale (Brassica oleracea var. acephala) with symptoms of hypocotyl and root rot. The isolates, characterized as binucleate Rhizoctonia spp., did not show an anastomosis reaction with any of the binucleate Rhizoctonia spp. testers used. The pathogenicity of the isolates was tested under greenhouse conditions; all isolates were pathogenic and showed different symptom severities on kale. The ITS-5.8S rDNA sequences of kale isolates and 50 testers (25 binucleate Rhizoctonia spp. and 25 Rhizoctonia solani) were compared in order to characterize the genetic identity of Rhizoctonia spp. infecting kale. The kale isolates showed genetic identities ranging from 99.3 to 99.8% and were phylogenetically closely related to CAG 7 (AF354084), with identities of 98.5 and 98.7%. It is suggested that the binucleate Rhizoctonia spp. causing hypocotyl and root rot on kale Brazil comprises a new AG not yet described.

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Solid formulations of binucleate Rhizoctonia isolates suppress Rhizoctonia solani and Pythium ultimum in potting medium

Cited by 13 publications

References 22 publications

Biological control of plant diseases

Biological control of plant diseases

Diversity of Mycoviruses Present in Strains of Binucleate Rhizoctonia and Multinucleate Rhizoctonia, Causal Agents for Potato Stem Canker or Black Scurf

rDNA-based characterization of a new binucleate Rhizoctonia spp. causing root rot on kale in Brazil

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