Evaluation of Allelopathic Effect of Euphorbia maculata Weed on Traits of Germination, Chlorophyll and Carotenoids Pigments of Wheat Cultivars

In grazing conditions, unpalatable species may induce either associational defense or neighbor contrast susceptibility in neighboring communities. Using surveys from eight grasslands, we tested whether various unpalatable species have the same impacts on neighboring communities in response to grazing. The studied unpalatable species were: Phlomis cancellata (an unpalatable nonpoisonous plant), Euphorbia boissieriana, E.microsciadia (poisonous plants), and Seseli transcaucasicum (a highly poisonous plant). Our results showed that, in the ungrazed grasslands, communities containing P. cancellata had lower biodiversity than communities without it. In the moderately- and heavily grazed grasslands, P. cancellata induced associational defense in the neighboring communities. In heavily grazed grasslands, both Euphorbia species promoted neighbor contrast susceptibility in the neighboring communities. Similarly, S. transcaucasicum in a heavily grazed grassland, induced neighbor contrast susceptibility. Different responses of plant community vulnerability among the studied unpalatable plants might be due to herbivore different foraging decisions. Accordingly, grazers selectively choose from other patches when facing P. cancellata and other plant individuals when there is a poisonous plant in a patch. Our results suggested that grazing intensity may not substantially affect the foraging decisions of sheep and goats in response to unpalatable species. We recommend monitoring the abundance of poisonous species to maintain the sustainable use of grasslands.

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Unpalatable plants induce a species-specific associational effect on neighboring communities

Erfanian

Memariani

Atashgahi

et al. 2021

Sci Rep

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Evaluation of allelopathic stress of St. John's wort (Hypericum perforatum) on the germination, physiological, and biochemical characteristics of green pea (Pisum sativum), the benchmark plant sensitive to allelochemicals

Gholamalipour Alamdari,

Habibi,

Masoumi

et al. 2024

J. Seed Res.

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Evaluation of Allelopathic Effect of Euphorbia maculata Weed on Traits of Germination, Chlorophyll and Carotenoids Pigments of Wheat Cultivars

Cited by 2 publications

References 15 publications

Unpalatable plants induce a species-specific associational effect on neighboring communities

Unpalatable plants induce a species-specific associational effect on neighboring communities

Evaluation of allelopathic stress of St. John's wort (Hypericum perforatum) on the germination, physiological, and biochemical characteristics of green pea (Pisum sativum), the benchmark plant sensitive to allelochemicals

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