Cited by 29Plant Pathogens and Fungal DiseasesPlant Disease Resistance and GeneticsPlant pathogens and resistance mechanisms

Response of Fusarium thapsinum to Sorghum brown midrib Lines and to Phenolic Metabolites

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Funnell-Harris, Deanna L., Sattler, Scott E., Pedersen, Jeffrey F.·2014·Plant Disease

Abstract

Sorghum lines were bred for reduced lignin for cellulosic bioenergy uses, through the incorporation of brown midrib (bmr)6 or -12 into two backgrounds (RTx430 and Wheatland) as either single or double-mutant lines. When these lines were assessed for resistance to Fusarium thapsinum stalk rot, a cause of lodging, they were as resistant to F. thapsinum as the near-isogenic wild type. Peduncles of newly identified bmr lines from an ethyl-methanesulfonate-mutagenized population, inoculated with F. thapsinum, were as resistant as the wild-type line, BTx623. One bmr line (1107) had significantly smaller mean lesion lengths than BTx623, suggesting that a mutation is associated with reduced susceptibility. Growing F. thapsinum on medium with ferulic, vanillic, sinapic, syringic, and caffeic acids (phenolic compounds derived from the lignin pathway and elevated in different bmr lines) indicated that F. thapsinum was tolerant to these compounds. When eight other sorghum fungi were tested for response to the presence of these compounds, ferulic acid inhibited these fungi. Most of the phenolics inhibited F. verticillioides and F. proliferatum. Accumulation of phenolic metabolites in bmr plants may inhibit growth of some sorghum pathogens, while other factors such as aromatic phytoalexins or salicylic acid may be involved in resistance to F. thapsinum.

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  • The effect of different phenolic acids and flavonoids on mycelium growth in cereal-based media varied largely depending on the Fusarium species and the concentration tested.

    “The effect of different phenolic acids and flavonoids on the mycelium growth assay, using cereal based media, varied largely depending on the Fusarium species and the concentration levels tested.”

    From Does sorghum phenolic extract have antifungal effect? (2024) · cites this paper as [33]

    The in vitro growth methods and results (page unavailable) show that responses to several phenolic acids varied by fungal species and concentration. However, the assays used peptone-glucose agar, not cereal-based media, and the tested compounds did not include flavonoids. (LLM, conf=0.90)

    Experimental — accuracy not yet measured
  • Funnell-Harris et al. (2014) found that Fusarium thapsinum was tolerant to sorghum phenolic compounds, but ferulic acid at 0.5 mM inhibited Fusarium verticillioides, Fusarium proliferatum, and Macrophomina phaseolina.

    “F. thapsinum was tolerant to these compounds.”

    From Does sorghum phenolic extract have antifungal effect? (2024) · cites this paper as [33]

  • The antifungal activity of ferulic acid was demonstrated by Funnell-Harris et al. (2014).

    “and its antifungal activity was demonstrated by Funnell-Harris et al. (2014) [33].”

    From Does sorghum phenolic extract have antifungal effect? (2024) · cites this paper as [33]

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Research works printed but not linked: 4

  1. [4]4. Bird, P. M. 1988. The role of lignification in plant disease. Pages 523-535 in: Experimental and Conceptual Plant Pathology, vol.
  2. [5]5. R. S. Singh, U. S. Singh, W. M. Hess, and D. J. Weber, eds. Oxford and IBH Publishing Co., Pvt., Ltd., New Delhi, India.
  3. [11]11. Castor, L. L., and Frederiksen, R. A. 1982. Grain deterioration in sorghum. Pages 163-169 in: Proc. Int. Symp. Sorghum Grain Quality. L. W. Rooney and D. S. Murty, eds. ICRISAT Center, Patancheru A.P., India.
  4. [33]33. Padule, D. N., and Salunkhe, D. K. 1984. Effects of diseases on yield and quality of grain sorghum. In: Nutritional and Processing Quality of Sor- ghum. D. K. Salunkhe, J. K. Chavan and S. J. Jadhav, eds. Oxford & IBH Pub. Co., New Dehli, India.

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Authors
Funnell-Harris, D. L., Sattler, S. E., & Pedersen, J. F.
Affiliations
  • Grain, Forage, and Bioenergy Research Unit (GFBRU), United States Department of Agriculture–Agricultural Research Service (USDA-ARS), and Department of Plant Pathology, University of Nebraska, Lincoln 68583-0937
  • University of Nebraska–Lincoln (US)
Venue
Plant Disease
Published
2014-10
Volume
98
Issue
10
Pages
1300-1308
ISSN
  • 0191-2917 (ISSN-L)
  • 1943-7692
OpenAlex
W1976118061
Cited by
29
References
52
Citations by year
2025: 1 · 2024: 3 · 2023: 4 · 2022: 1 · 2021: 8 · 2020: 1 · 2019: 1 · 2018: 2 · 2017: 3 · 2016: 4 · 2015: 1
FWCI
1.33
Type
journal article
Language
en
Open access
Locations
  • Plant Disease (publishedVersion)
  • PubMed (publishedVersion)
  • Lincoln (University of Nebraska) (submittedVersion, public-domain)
Funders
  • U.S. Department of Agriculture (2011-67009-30026)
  • Agricultural Research Service (2011-67009-30026)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Plant Pathogens and Fungal Diseases
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Disease Resistance and Genetics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant pathogens and resistance mechanisms
Keywords
Fusarium thapsinum, lignin reduction, phenolic compounds, ferulic acid, vanillic acid, sinapic acid, syringic acid, caffeic acid, antifungal resistance, EMS mutagenesis, near-isogenic lines, salicylic acid

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