First Report of <i>Rhizoctonia solani</i> AG 11 Causing Stem Rot of <i>Phaseolus vulgaris</i> in Idaho

Woodhall, J. W.; Brown, Lara; Harrington, Miranda; Pizolotto, Carlos Augusto; Keith, S.; Marshall, Juliet M.

doi:10.1094/pdis-03-20-0666-pdn

Cited by 2 publications

(3 citation statements)

References 7 publications

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“…solani AG‐11 has been reported to be pathogenic to lily ( Lilium spp.) in Japan (Misawa et al, 2017), lupin ( Lupinus angustifolius ) in Western Australia (Sweetingham et al, 1986), snap bean ( Phaseolus vulgaris ) in Idaho (Woodhall et al, 2020), soybean ( Glycine max ) in Arkansas (Ajayi‐Oyetunde & Bradley, 2016) and sugar beet in Poland (Moliszewska et al, 2020). The results of our pathogenicity tests indicated that R .…”

Section: Discussionmentioning

confidence: 99%

“…Woodhall et al, 2020), soybean (Glycine max) in Arkansas (Ajayi-Oyetunde & Bradley, 2016) and sugar beet in Poland (Moliszewska et al, 2020). The results of our pathogenicity tests indicated that R. solani AG-4 caused high levels of stand loss and disease severity on rice seedlings while the R. solani AG-11 isolates exhibited a significant variability in their aggressiveness.…”

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confidence: 99%

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Identification and distribution of fungal pathogens associated with seedling blight of rice in the southern United States

Gaire¹,

Zhou²,

Zhou

et al. 2022

Plant Pathology

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Surveys were conducted in the five southern rice‐producing states of Arkansas, Louisiana, Mississippi, Missouri and Texas in the United States during the 2018 and 2019 cropping seasons to determine the distribution and pathogenicity of fungal pathogens associated with seedling blight in rice. A total of 349 pathogenic fungal isolates were collected and identified as belonging to four genera: Rhizoctonia solani, Fusarium spp., Sclerotium rolfsii and Marasmius graminum based on morphological characteristics, molecular analysis and Koch's postulates. R. solani (252 out of 349 pathogenic isolates) was the most prevalent fungus isolated from diseased samples. Of the 252 pathogenic R. solani isolates, 245 were further classified as anastomosis group 11 (AG‐11) and 7 as AG‐4. Isolates of R. solani AG‐4 and M. graminum were the most aggressive, with the highest stand loss (63% to 100%) and median disease rating (DR; 5.0), followed by isolates of R. solani AG‐11 (stand loss = 4% to 100% and DR = 0.6 to 5.0), Fusarium spp. (stand loss = 26% to 48% and DR = 2.0 to 5.0) and S. rolfsii (stand loss = 33% to 48% and DR = 2.0 to 3.0) in causing seedling blight in rice. R. solani (62% to 83% of total pathogenic isolates) and Fusarium spp. (10% to 24% of total pathogenic isolates) were predominant in all the five states surveyed. S. rolfsii and M. graminum were present only in Louisiana and Texas. The results of this first systematic survey of rice seedling diseases in the southern United States will help develop effective fungicide seed treatment strategies for control of stand loss caused by seedling blight, one of the major factors limiting rice production.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Identification and distribution of fungal pathogens associated with seedling blight of rice in the southern United States

Gaire¹,

Zhou²,

Zhou

et al. 2022

Plant Pathology

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“…R. solani is a ubiquitous soil-borne plant pathogen that can survive in soil for several years. R. solani infects tobacco and also causes rice sheath wilt ( Yang et al 2022 ), pepper root rot ( El-Kazzaz et al 2022 ), peanut pod rot ( Chi et al 2016 ), stem rot of Phaseolus vulgaris ( Woodhall et al 2020 ), potato with stem canker ( Yang et al 2019 ), tomato root rot ( Heflish et al 2021 ), and root rot of wheat ( Özer et al 2019 ). The primary method of controlling tobacco target spot disease is using chemical fungicides.…”

Section: Introductionmentioning

confidence: 99%

Biocontrol and Growth Promotion Potential of Bacillus subtilis CTXW 7-6-2 against Rhizoctonia solani that Causes Tobacco Target Spot Disease

Huang,

Jin,

Wen

et al. 2024

Polish Journal of Microbiology

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Fungal diseases form perforated disease spots in tobacco plants, resulting in a decline in tobacco yield and quality. The present study investigated the antagonistic effect of Bacillus subtilis CTXW 7-6-2 against Rhizoctonia solani, its ability to promote the growth of tobacco seedlings, and the expression of disease resistance-related genes for efficient and eco-friendly plant disease control. Our results showed that CTXW 7-6-2 had the most vigorous growth after being cultured for 96 h, and its rate of inhibition of R. solani growth in vitro was 94.02%. The volatile compounds produced by CTXW 7-6-2 inhibited the growth of R. solani significantly (by 96.62%). The fungal growthinhibition rate of the B. subtilis CTXW 7-6-2 broth obtained after high-temperature and no-high-temperature sterile fermentation was low, at 50.88% and 54.63%, respectively. The lipopeptides extracted from the B. subtilis CTXW 7-6-2 fermentation broth showed a 74.88% fungal growth inhibition rate at a concentration of 100 mg/l. Scanning and transmission electron microscopy showed some organelle structural abnormalities, collapse, shrinkage, blurring, and dissolution in the R. solani mycelia. In addition, CTXW 7-6-2 increased tobacco seedling growth and improved leaf and root weight compared to the control. After CTXW 7-6-2 inoculation, tobacco leaves showed the upregulation of the PDF1.2, PPO, and PAL genes, which are closely related to target spot disease resistance. In conclusion, B. subtilis CTXW 7-6-2 may be an efficient biological control agent in tobacco agriculture and enhance plant growth potential.

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First Report of Rhizoctonia solani AG 11 Causing Stem Rot of Phaseolus vulgaris in Idaho

Cited by 2 publications

References 7 publications

Identification and distribution of fungal pathogens associated with seedling blight of rice in the southern United States

Identification and distribution of fungal pathogens associated with seedling blight of rice in the southern United States

Biocontrol and Growth Promotion Potential of Bacillus subtilis CTXW 7-6-2 against Rhizoctonia solani that Causes Tobacco Target Spot Disease

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