Abstract
Woolly cupgrass (Eriochloa villosa Thunb. Knuth) is a common weed which is native to East Asia. It also was introduced into North America and Europe. The problems related to controlling this annual weed are due to its germination characteristics, low susceptibility to certain herbicides and considerable competitiveness against other plant species. Several genera of the Panicoideae subfamily contain benzoxazinoids, therefore we hypothesized that woolly cupgrass also produces these chemicals. To test this hypothesis, the benzoxazinoid content of plants at the flowering stage was investigated. Our results demonstrate the presence of benzoxaziniods in woolly cupgrass and this represents the first report of these compounds in this species within the Poaceae family and the Panicoideae subfamily. Benzoxazinoids likely account for the rapid spread and ecological success of woolly cupgrass in its invasive range.
Highlights
IntroductionKunth) is a common weed which is native to East Asia
Our results demonstrate the presence of benzoxazinoid compounds in different tissues of woolly cupgrass (Table 1), and this represents the first report of these compounds in this species
We report the first occurrence of benzoxazinoids in woolly cupgrass (Eriochloa villosa)
Summary
Kunth) is a common weed which is native to East Asia. In the middle of the 20th century, it was introduced into North America, the United States, especially as a weed in corn fields. Soon it spread, and appeared in the southern part of Canada by the start of the 21st century. It was introduced into Europe (Romania, Ukraine, Hungary) [1]. In the last few years, this problematic weed plant has been found in other Western and Eastern European countries [2]. In Hungary, there are numerous regions where this invasive plant is found [3]
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