Study of the biosynthesis of fumonisins B1, B2 and B3 by different strains of
            <b>
              <i>Fusarium moniliforme</i>
            </b>

Melcion, Dominique; Cahagnier, B.; Richard-Molard, Daniel

doi:10.1046/j.1472-765x.1997.00074.x

Cited by 19 publications

(14 citation statements)

References 4 publications

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“…Differences between three temperatures around the optimum (25°C, 30°C and 35°C) were consistent over 18 fungal strains from different geographic origins showing varying sporulation capabilities. Range and amount of sporulation found by Melcion et al (1997) in different strains were similar to those from this study.…”

Section: Discussionsupporting

confidence: 88%

Effect of environmental conditions on spore production by Fusarium verticillioides, the causal agent of maize ear rot

2008

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Silk infection by Fusarium verticillioides is caused by conidia produced on maize crop residues and results in kernel infection and consequent accumulation of fumonisins. Studies were carried out in both controlled and field conditions to understand the dynamics of sporulation on maize residues. The effect of temperature (5°C to 45°C) and incubation time (3 to 41 days) on spore production on maize meal agar was described by a logistic model that accounted for 85% of variability. The rate parameter depended on the length of incubation and the asymptote on temperature. Maximum sporulation occurred at 27°C, with a progressive increase between 5°C and 27°C and then a rapid decline, with no sporulation at 45°C. Fusarium verticillioides strains from different geographic origins showed different sporulation capabilities, with similar optimum temperatures. Pieces of stalk residues inoculated with F. verticillioides and placed above the soil between rows of maize crops, in 2003 to 2005, produced conidia continuously and abundantly for some weeks, particularly during the period after silk emergence, with an average of 1.59×10 7 conidia g −1 of stalk, over a wide range of environmental conditions. Sixty-seven percent of variability of the spore numbers found on stalks was accounted for by a multiple regression model. Precipitation (rain or overhead irrigation) in the 14 days before stalk sampling decreased the number of spores, whilst the number of days with conducive conditions of moisture (i.e. days with rainfall, average relative humidity >85% or vapour pressure deficit <4 hPa) and greater degreedays (base 0°C) in the 14 and 3 days before sampling, respectively, increased sporulation.

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Section: Discussionsupporting

confidence: 88%

Effect of environmental conditions on spore production by Fusarium verticillioides, the causal agent of maize ear rot

2008

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“…Although previous studies reported 25°C ± 2°C to be optimal temperatures for fumonisin production (Alberts et al 1990;Melcion et al 1997), this study showed that fumonisin production was higher at 16°C than at 26°C (Figure 1). However, the fumonisin production per unit in this study was not even a fraction of the amount reported by previous studies, where fumonisin production on maize measured >14,000 mg/L and 850 mg/L, after 7 and 10 days respectively (Alberts et al 1990;Melcion et al 1997). In contrast, Garcia et al (2012) reported less than 0.02 mg/L fumonisin after F. verticillioides was incubated on sterile soybeans for 21 days at different temperatures ranging between 15°C and 30°C.…”

Section: Discussioncontrasting

confidence: 64%

“…Mycotoxin production is species-and straindependent, and is influenced by the growth substrate and environmental conditions (D'Mello and Macdonald 1997;Melcion et al 1997;Brzonkalik et al 2011;Garcia et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Mycotoxin production by three different toxigenic fungi genera on formulated abalone feed and the effect of an aquatic environment on fumonisins

et al. 2019

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Mycotoxins are toxic secondary metabolites produced by various filamentous fungi, of which Fusarium, Aspergillus and Penicillium are the three main genera. Fusarium verticillioides is one of the most dominant toxigenic fungal species, associated with fumonisin contamination in grainbased feeds, such as compound abalone feed. Mycotoxin production is influenced by temperature and available nutrients. In this study the aims were: to determine if abalone feed as growth substrate favours mycotoxin production for toxigenic fungi; to determine the most effective temperature for fumonisin production by F. verticillioides on abalone feed; and to assess the effect of the aquatic environment on fumonisin-contaminated abalone feed. A total of 93 fungal isolates were inoculated onto abalone feed, including species belonging to the genera Fusarium, Aspergillus and Penicillium. Feed inoculated with F. verticillioides were incubated at two different temperatures and fumonisin-contaminated feed was submerged into seawater for 24 h. Results showed that mycotoxins were produced when abalone feed was inoculated with toxigenic fungi, and that F. verticillioides produced higher concentrations of fumonisins at a lower temperature. Submerging fumonisin-contaminated feed in seawater showed that this toxin leached into the seawater, lowering the risk of fumonisins to be consumed by abalone.

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“…Water activity (a w ) and temperature influence fumonisin biosynthesis when F. moniliforme is grown in culture on mature maize kernels (3,(14)(15)(16). It has been reported that when the fungus is grown on mature maize grain adjusted to a a w of 1.0 at 25°C, good growth and rapid production of fumonisin B 1 occur (16). Based on desorption isotherms, the a w of intact maize kernels does not begin to significantly decrease until the kernel moisture content falls below approximately 24% (a w , ϳ1.0) (9).…”

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confidence: 99%

Influence of Kernel Age on Fumonisin B ₁ Production in Maize by Fusarium moniliforme

Warfield

Gilchrist

1999

Appl Environ Microbiol

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Production of fumonisins by Fusarium moniliforme on naturally infected maize ears is an important food safety concern due to the toxic nature of this class of mycotoxins. Assessing the potential risk of fumonisin production in developing maize ears prior to harvest requires an understanding of the regulation of toxin biosynthesis during kernel maturation. We investigated the developmental-stage-dependent relationship between maize kernels and fumonisin B1 production by using kernels collected at the blister (R2), milk (R3), dough (R4), and dent (R5) stages following inoculation in culture at their respective field moisture contents with F. moniliforme. Highly significant differences (P ≤ 0.001) in fumonisin B1production were found among kernels at the different developmental stages. The highest levels of fumonisin B1 were produced on the dent stage kernels, and the lowest levels were produced on the blister stage kernels. The differences in fumonisin B1production among kernels at the different developmental stages remained significant (P ≤ 0.001) when the moisture contents of the kernels were adjusted to the same level prior to inoculation. We concluded that toxin production is affected by substrate composition as well as by moisture content. Our study also demonstrated that fumonisin B1 biosynthesis on maize kernels is influenced by factors which vary with the developmental age of the tissue. The risk of fumonisin contamination may begin early in maize ear development and increases as the kernels reach physiological maturity.

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Study of the biosynthesis of fumonisins B1, B2 and B3 by different strains of Fusarium moniliforme

Cited by 19 publications

References 4 publications

Effect of environmental conditions on spore production by Fusarium verticillioides, the causal agent of maize ear rot

Effect of environmental conditions on spore production by Fusarium verticillioides, the causal agent of maize ear rot

Mycotoxin production by three different toxigenic fungi genera on formulated abalone feed and the effect of an aquatic environment on fumonisins

Influence of Kernel Age on Fumonisin B ₁ Production in Maize by Fusarium moniliforme

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Study of the biosynthesis of fumonisins B1, B2 and B3 by different strains of Fusarium moniliforme

Cited by 19 publications

References 4 publications

Effect of environmental conditions on spore production by Fusarium verticillioides, the causal agent of maize ear rot

Effect of environmental conditions on spore production by Fusarium verticillioides, the causal agent of maize ear rot

Mycotoxin production by three different toxigenic fungi genera on formulated abalone feed and the effect of an aquatic environment on fumonisins

Influence of Kernel Age on Fumonisin B 1 Production in Maize by Fusarium moniliforme

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Influence of Kernel Age on Fumonisin B ₁ Production in Maize by Fusarium moniliforme