Impact of moisture, host genetics and Fusarium graminearum isolates on Fusarium head blight development and trichothecene accumulation in spring wheat

@article{Gautam2011ImpactOM,
  title={Impact of moisture, host genetics and Fusarium graminearum isolates on Fusarium head blight development and trichothecene accumulation in spring wheat},
  author={Pravin Gautam and Ruth Dill-Macky},
  journal={Mycotoxin Research},
  year={2011},
  volume={28},
  pages={45-58}
}
The impact of moisture on the development of Fusarium head blight (FHB) and accumulation of deoxynivalenol (DON) in Fusarium-infected wheat was examined. The field experiments were designed as split-split-plot with five replicates. Main plots were durations of mist-irrigation [14, 21, 28 and 35 days after inoculation (DAI)]; sub-plots were wheat cultivar; and sub-sub-plots were F. graminearum isolates differing in aggressiveness and DON production capacity. The wheat cultivars ‘Alsen… 
Fusarium head blight development and trichothecene accumulation in point inoculated Fusarium infected wheat heads
TLDR
This study characterised the influence of different F. graminearum isolates and host resistance on Fusarium head blight development and mycotoxin accumulation in warm and humid environments at and shortly after anthesis.
Fusarium head blight incidence and detection of Fusarium toxins in wheat in relation to agronomic factors
TLDR
Investigation of incidences of Fusarium head blight (FHB) and concentrations of six mycotoxins in wheat from 2010 to 2013 suggests necessity to monitor and mitigate FHB risk for susceptible cultivars, when wheat spring sowing follows corn or wheat.
Impact of post-anthesis rainfall, fungicide and harvesting time on the concentration of deoxynivalenol and zearalenone in wheat
TLDR
This is the first report to show that the post-anthesis rainfall can significantly increase ZON in wheat, which can increase further with a delayed harvest but may be significantly reduced with the application of prothioconazole.
Exploration of Mycotoxin Accumulation and Transcriptomes of Different Wheat Cultivars during Fusarium graminearum Infection
Fusarium graminearum is one of the most devastating diseases of wheat worldwide, and can cause Fusarium head blight (FHB). F. graminearum infection and mycotoxin production mainly present in wheat
Free Water Can Leach Mycotoxins from Fusarium‐infected Wheat Heads
TLDR
It can be concluded that DON and its derivatives produced in planta can be leached out from the host tissues by free water on contact with plant surfaces.
Single and sequential applications of metconazole alone or in mixture with pyraclostrobin to improve Fusarium head blight control and wheat yield in Brazil
TLDR
The fungicide x cultivar susceptibility interaction was significant with the highest severity reduction (>70%) susceptible cultivars and overall yield increased in fungicide-treated plots compared to the check; the mixture of fungicides led to higher increase in yield.
Infection conditions of Fusarium graminearum in barley are variety specific and different from those in wheat
TLDR
Climate chamber experiments with artificial FG infection of barley investigating the influence of different temperatures and durations and field experiments showed that the overwintered straw treatment resulted in a three times higher FG incidence and DON content compared with the control and freshly inoculated straw treatment.
Effects of Rain and Simulated Rain on Deoxynivalenol Levels in Grain and Chaff of Winter Wheat with Fusarium Head Blight
Wheat grain affected by Fusarium head blight (FHB) contains the mycotoxin deoxynivalenol (DON) that is harmful to humans and animals. Reducing the amount of DON in grain is the goal of management
CONTRIBUTION OF PRIMARY SPIKES VS TILLERS TO TOTAL DEOXYNIVALENOL IN HARVESTED GRAIN OF WHEAT AND BARLEY
TLDR
It is suggested cultivars with high tillers number should be lected in breeding programs to develop cultivar with high yi eld and low DON, and planting density of wheat and barley can be adjusted such that it will result in higher numbers of tillers, increasing tillers propo rtion that might lower DON concentration in final harvest.
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References

SHOWING 1-10 OF 58 REFERENCES
Fusarium head blight development and trichothecene accumulation in point inoculated Fusarium infected wheat heads
TLDR
This study characterised the influence of different F. graminearum isolates and host resistance on Fusarium head blight development and mycotoxin accumulation in warm and humid environments at and shortly after anthesis.
The Effect of Inoculation Treatment and Long-term Application of Moisture on Fusarium Head Blight Symptoms and Deoxynivalenol Contamination in Wheat Grains
TLDR
Four inoculation treatments in which a conidial suspension was sprayed on flowering ears were compared to study the effect of the application of moisture during kernel setting and filling with a mist-irrigation system and the relation between visual symptoms and the DON content deteriorated at higher infection levels.
Post-anthesis moisture increased Fusarium head blight and deoxynivalenol levels in North Carolina winter wheat.
TLDR
This is the first investigation to show that extended post-flowering moisture can have a significant enhancing effect on FHB, FDK, DON, and percent infected kernels of wheat and imply that accurate forecasts of DON in small grains must take account of post-anthesis weather conditions.
Resource Allocation and Cultivar Stability in Breeding for Fusarium Head Blight Resistance in Spring Wheat
TLDR
Optimum resource allocation for DIS was most affected by the number of environments with three being the minimum to accurately characterize a genotype's resistance level and using more than three replications or scoring more than 10 spikes per plot had little practical value.
Resistance to fusarium head blight and deoxynivalenol accumulation in wheat
TLDR
The percentage of scabbed spikelets and kernels can be generally used to predict DON levels in harvested wheat grain, and 16 wheat lines from various origins that accumulated less than 2 mg/kg DON may be useful as sources for breeding wheat cultivars with lower DON levels.
Influence of Wheat Cultivar, Species of Fusarium, and Isolate Aggressiveness on the Efficacy of Fungicides for Control of Fusarium Head Blight.
TLDR
Among the fungicides tested, those containing tebuconazole tended to be more effective in reducing FHB, and research to develop more resistant cultivars, better spraying technology, and more effective fungicides is also needed.
Selection for Fusarium head blight resistance in early generations reduces the deoxynivalenol (DON) content in grain of winter and spring wheat
TLDR
This study examined whether an early selection for fewer FHB symptoms would lead to a reduced DON content in grain after inoculation with Fusarium culmorum, illustrating that indirect selection should already be feasible in the earliest generations.
Effect of Extended Irrigation and Host Resistance on Deoxynivalenol Accumulation in Fusarium-Infected Wheat.
TLDR
Environmental moisture is an important factor determining the DON content of Fusarium-infected wheat, and DON concentrations tended to decrease from disease assessment until harvest, regardless of the irrigation treatment.
Variation Among Isolates of Fusarium graminearum Associated with Fusarium Head Blight in North Carolina
TLDR
Randomly Amplified Polymorphic DNA (RAPD) analysis revealed high levels of genotypic diversity among isolates of Fusarium graminearum associated with FHB, which can reduce yield of wheat and decrease the value of harvested grain by accumulation of detrimental toxins.
Effects of infection time and moisture on development of ear blight and deoxynivalenol production by Fusarium spp. in wheat
Summary Wheat ears were inoculated with conidia of Fusarium spp. at different growth stages between ear emergence and harvest and moist conditions were maintained for up to 7 days subsequently by
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