Article: Studies in the area of ecology reported from University of Montana.

According to a study from the United States, "1. Evaluating variation, or 'conditionality', in plant interactions is crucial to understanding their ecological importance and predicting where they might be at play."

"Much is known about conditionality for competition, facilitation and herbivory, but not for allelopathy, which likely contributes to the equivocal nature of reports on this topic. Centaurea maculosa (spotted knapweed) is an invasive species in North America, whose success has been attributed, at least in part, to the allelochemical root exudate (+/-)-catechin. 2. Understanding the ecological relevance of (+/-)-catechin necessitates determining how it ...

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