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Fungicide effects on fungal community composition in the wheat phyllosphere.

Karlsson I, Friberg H, Steinberg C, Persson P - PLoS ONE (2014)

Bottom Line: This study examined fungicide effects on fungal communities on winter wheat leaves in two areas of Sweden.It was found that commonly used fungicides had moderate but significant effect on fungal community composition in the wheat phyllosphere.The relative abundance of several saprotrophs was altered by fungicide use, while the effect on common wheat pathogens was mixed.

View Article: PubMed Central - PubMed

Affiliation: Dept. of Crop Production Ecology, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden.

ABSTRACT
The fungicides used to control diseases in cereal production can have adverse effects on non-target fungi, with possible consequences for plant health and productivity. This study examined fungicide effects on fungal communities on winter wheat leaves in two areas of Sweden. High-throughput 454 sequencing of the fungal ITS2 region yielded 235 operational taxonomic units (OTUs) at the species level from the 18 fields studied. It was found that commonly used fungicides had moderate but significant effect on fungal community composition in the wheat phyllosphere. The relative abundance of several saprotrophs was altered by fungicide use, while the effect on common wheat pathogens was mixed. The fungal community on wheat leaves consisted mainly of basidiomycete yeasts, saprotrophic ascomycetes and plant pathogens. A core set of six fungal OTUs representing saprotrophic species was identified. These were present across all fields, although overall the difference in OTU richness was large between the two areas studied.

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Wheat leaves were sampled in two important agricultural production areas of Sweden.Dots represent position of individual fields within in the two sampling areas. The Northern sampling area (N) is located in the Västergötland region and the Southern area (S) in the Skåne region.
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pone-0111786-g001: Wheat leaves were sampled in two important agricultural production areas of Sweden.Dots represent position of individual fields within in the two sampling areas. The Northern sampling area (N) is located in the Västergötland region and the Southern area (S) in the Skåne region.

Mentions: Sampling of wheat fields was carried out in two important agricultural production areas of Sweden, a Northern sampling area located in the region of Västergötland and a Southern sampling area in the Skåne region (Fig. 1). The Southern area is characterised by a milder and drier climate. The two areas also differ in agricultural management, for example in terms of cropping sequence [23], the choice of wheat variety and fungicides are used more frequently in the Southern area [24]. The average winter wheat yield is about 2000 kg/ha higher in the Southern area [23]. At the time of sampling, fields in the Northern area had reached anthesis, while in the Southern area the developmental stage ranged from anthesis to the early dough ripening stage (Table 1).


Fungicide effects on fungal community composition in the wheat phyllosphere.

Karlsson I, Friberg H, Steinberg C, Persson P - PLoS ONE (2014)

Wheat leaves were sampled in two important agricultural production areas of Sweden.Dots represent position of individual fields within in the two sampling areas. The Northern sampling area (N) is located in the Västergötland region and the Southern area (S) in the Skåne region.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4219778&req=5

pone-0111786-g001: Wheat leaves were sampled in two important agricultural production areas of Sweden.Dots represent position of individual fields within in the two sampling areas. The Northern sampling area (N) is located in the Västergötland region and the Southern area (S) in the Skåne region.
Mentions: Sampling of wheat fields was carried out in two important agricultural production areas of Sweden, a Northern sampling area located in the region of Västergötland and a Southern sampling area in the Skåne region (Fig. 1). The Southern area is characterised by a milder and drier climate. The two areas also differ in agricultural management, for example in terms of cropping sequence [23], the choice of wheat variety and fungicides are used more frequently in the Southern area [24]. The average winter wheat yield is about 2000 kg/ha higher in the Southern area [23]. At the time of sampling, fields in the Northern area had reached anthesis, while in the Southern area the developmental stage ranged from anthesis to the early dough ripening stage (Table 1).

Bottom Line: This study examined fungicide effects on fungal communities on winter wheat leaves in two areas of Sweden.It was found that commonly used fungicides had moderate but significant effect on fungal community composition in the wheat phyllosphere.The relative abundance of several saprotrophs was altered by fungicide use, while the effect on common wheat pathogens was mixed.

View Article: PubMed Central - PubMed

Affiliation: Dept. of Crop Production Ecology, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden.

ABSTRACT
The fungicides used to control diseases in cereal production can have adverse effects on non-target fungi, with possible consequences for plant health and productivity. This study examined fungicide effects on fungal communities on winter wheat leaves in two areas of Sweden. High-throughput 454 sequencing of the fungal ITS2 region yielded 235 operational taxonomic units (OTUs) at the species level from the 18 fields studied. It was found that commonly used fungicides had moderate but significant effect on fungal community composition in the wheat phyllosphere. The relative abundance of several saprotrophs was altered by fungicide use, while the effect on common wheat pathogens was mixed. The fungal community on wheat leaves consisted mainly of basidiomycete yeasts, saprotrophic ascomycetes and plant pathogens. A core set of six fungal OTUs representing saprotrophic species was identified. These were present across all fields, although overall the difference in OTU richness was large between the two areas studied.

Show MeSH