Occurrence of pyrrolizidine alkaloids in ragwort plants, soils and surface waters at the field scale in grassland
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Occurrence of pyrrolizidine alkaloids in ragwort plants, soils and surface waters at the field scale in grassland. / Hama, Jawameer R.; Strobel, Bjarne W.
In: Science of the Total Environment, Vol. 755, 142822, 2021.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Occurrence of pyrrolizidine alkaloids in ragwort plants, soils and surface waters at the field scale in grassland
AU - Hama, Jawameer R.
AU - Strobel, Bjarne W.
PY - 2021
Y1 - 2021
N2 - Pyrrolizidine alkaloids (PA)s are natural toxins produced by a variety of plants including ragwort. The PAs present a serious health risk to human and livestock. Although these compounds have been extensively studied in food and feed, little is known regarding their environmental fate. To fill this data gap, we investigated the occurrence of PAs in ragwort plants, soils and surface waters at three locations where ragwort was the dominant plant species to better understand their environmental distribution. The concentrations of PAs were quantified during the full growing season (April–November) and assessed in relation to rain events. PA concentrations ranged from 3.2–6.6 g/kg dry weight (dw) in plants, 0.8–4.0 mg/kg dw in soils, and 6.0–529 μg/L in surface waters. Maximum PA concentrations in the soil (4 mg/kg) and water (529 μg/L) were in mid-May just before flowering. The average distribution of PAs in water was approximately 5 g/10,000 L, compared to the average amounts present in ragwort (506 kg/ha), and soil (1.7 kg/ha). In general, concentrations of PAs increase in the soil and surface water following rain events.
AB - Pyrrolizidine alkaloids (PA)s are natural toxins produced by a variety of plants including ragwort. The PAs present a serious health risk to human and livestock. Although these compounds have been extensively studied in food and feed, little is known regarding their environmental fate. To fill this data gap, we investigated the occurrence of PAs in ragwort plants, soils and surface waters at three locations where ragwort was the dominant plant species to better understand their environmental distribution. The concentrations of PAs were quantified during the full growing season (April–November) and assessed in relation to rain events. PA concentrations ranged from 3.2–6.6 g/kg dry weight (dw) in plants, 0.8–4.0 mg/kg dw in soils, and 6.0–529 μg/L in surface waters. Maximum PA concentrations in the soil (4 mg/kg) and water (529 μg/L) were in mid-May just before flowering. The average distribution of PAs in water was approximately 5 g/10,000 L, compared to the average amounts present in ragwort (506 kg/ha), and soil (1.7 kg/ha). In general, concentrations of PAs increase in the soil and surface water following rain events.
KW - Fallow
KW - Hepatotoxic
KW - Jacobaea vulgaris
KW - Plant toxins
KW - Surface water
KW - Terrestrial environment
U2 - 10.1016/j.scitotenv.2020.142822
DO - 10.1016/j.scitotenv.2020.142822
M3 - Journal article
C2 - 33348479
AN - SCOPUS:85094100591
VL - 755
JO - Science of the Total Environment
JF - Science of the Total Environment
SN - 0048-9697
M1 - 142822
ER -
ID: 254662490