Low allelopathic potential of an invasive forage grass on native grassland plants: a cause for encouragement?

Renne, Ian J.; Rios, Bianca G.; Fehmi, Jeffrey S.; Tracy, Benjamin F.

doi:10.1016/j.baae.2003.11.001

Cited by 30 publications

(34 citation statements)

References 46 publications

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“…The endophyte produces alkaloids and enhances host resistance to herbivores, pathogens, drought, and plant competition (Clay 1990;Elmi and West 1995;Clay 1996;Malinowski and Belesky 2000). The endophyte may also contribute to the presence of allelochemicals in tall fescue (Malinowski et al 1999;Renne et al 2004). Importantly, the presence of the endophyte in tall fescue strongly slows the successional dynamics of plant communities by suppressing colonizing tree species (J.A.…”

Section: Methodsmentioning

confidence: 98%

“…For example, compounds toxic to other plants can be artificially isolated from many plant species, but these compounds are not necessarily encountered by neighboring plants in nature (Harper 1994). Furthermore, little research has explored whether co-occurring native species differ in their responses to allelopathy (but see, Vandermast et al 2002;Grant et al 2003;Renne et al 2004), potentially resulting in a shift in species composition due to the allelopathic effects of an invader.…”

Section: Introductionmentioning

confidence: 98%

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Invasive Plants can Inhibit Native Tree Seedlings: Testing Potential Allelopathic Mechanisms

2005

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The mechanisms by which invasive species affect native communities are not well resolved. For example, invasive plants may influence other species through competition, altered ecosystem processes, or other pathways. We investigated one potential mechanism by which invasive plants may harm native species, allelopathy. Specifically, we explored whether native tree species respond differently to potential allelopathic effects of two invasive plant species. We assessed the separate effects of Lolium arundinaceam (tall fescue) and Elaeagnus umbellata (autumn olive) on three common successional tree species: Acer saccharinum (silver maple), Populus deltoides (eastern cottonwood), and Platanus occidentalis (sycamore). Tall fescue and autumn olive are widely planted and highly invasive or persistent throughout North America where they often grow in forest edges, old fields, and other sites colonized by pioneering tree species. In an exploratory greenhouse experiment, we applied aqueous extracts derived from soil, leaf litter, or live leaves to native trees. We compared these treatments to a sterile water control and also to minced leaves leached in water, a common, but potentially less realistic method of testing for allelopathy. For all tree species, minced leaves from tall fescue reduced the probability that seedlings emerged, and minced leaves of autumn olive reduced the number of days to emergence. During other demographic stages, the three native tree species diverged in their responses to the invasive plants. Platanus occidentalis exhibited the widest range of responses, with reduced root biomass due to minced tissue from both invasive species, reduced days to emergence and marginally reduced survival from minced tall fescue, and reduced leaf biomass from tall fescue leaf litter. Populus deltoides appeared insensitive to most extracts, although survival was marginally increased with application of minced or fresh leaf extracts from autumn olive. In addition, minced tall fescue shortened the time to seedling emergence for Acer saccharinum, potentially a positive effect. Overall, results suggest that allelopathy may be one mechanism underlying the negative impacts of tall fescue and autumn olive on other plant species, but that effects can depend strongly upon the source of allelochemicals and the tree species examined.

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Section: Methodsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Invasive Plants can Inhibit Native Tree Seedlings: Testing Potential Allelopathic Mechanisms

2005

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“…For sainfoin grown in pure stands, the percentage of plants without nodules was 20 and twice as much in mixtures with tall fescue, where nodulation rating was strongly depressed (by 23.1%). It is assumed that this is due to competition for absorption of some nutrients as well to the allelopathic effect of grass components found by Siegel and Bush (1997) and Renne et al (2004). In the three component mixtures (with subterranean clover as a component), nodulation rating was recovered and was found to be higher than that of sainfoin grown alone (by 19.2%), without nodule-forming plants.…”

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confidence: 82%

Studies on Nodulating Capacity of Some Forage Legumes Grown Alone or in Mixtures

Vasileva

Athar

2018

Planta daninha

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-A pot experiment was conducted to study the nodulating capacity of some forage legumes. Birdsfoot trefoil (Lotus corniculatus L), sainfoin (Onobrychis viciifolia Scop.) and subterranean clover (Trifolium subterraneum L.) were grown in pure culture (100%) and in mixtures with tall fescue (Festuca arundinacea Schreb.) in the ratios: birdsfoot trefoil + tall fescue (50:50%); sainfoin + tall fescue (50:50%); subterranean clover + tall fescue (50:50%); birdsfoot trefoil + subterranean clover + tall fescue (33:33:33%); sainfoin + subterranean clover + tall fescue (33:33:33%). Birdsfoot trefoil from the crops cultivated in pure stands showed the highest nodulation rating (31), followed by sainfoin (26) Palavras-chave: eficiência do uso de fósforo, sanfeno, trevo-subterrâneo, festucaalta, cultivo isolado ou em combinação.

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“…The well-developped mycelial network measured under inoculated E. camaldulensis trees could explain this positive effect by equalizing the distribution of soil resources among competitively dominant and sub-dominant species (Wirsel 2004). But it has been also reported that soil microbes can act against allelochemical mediators, inactiving or metabolizing toxic compounds (Renne et al 2004). In particular, it has been suggested that AM fungi could protect seedlings from allelopathy (Renne et al 2004).…”

Section: Allelopathy and Soil Microbiotamentioning

confidence: 95%

“…But it has been also reported that soil microbes can act against allelochemical mediators, inactiving or metabolizing toxic compounds (Renne et al 2004). In particular, it has been suggested that AM fungi could protect seedlings from allelopathy (Renne et al 2004).…”

Section: Allelopathy and Soil Microbiotamentioning

confidence: 98%

Rhizosphere microbiota interfers with plant-plant interactions

et al. 2009

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Diversity, structure and productivity of above-ground compartment of terrestrial ecosystems have been generally considered as the main drivers of the relationships between diversity and ecosystem functioning. More recently it has been suggested that plant population dynamics may be linked with the development of the below-ground community. The biologically active soil zone where root-root and rootmicrobe communications occur is named "Rhizosphere" where root exudates play active roles in regulating rhizosphere interactions. Root exudation can regulate the soil microbial community, withstand herbivory, facilitate beneficial symbioses, modify the chemical and physical soil properties and inhibit the growth of competing plant species. In this review, we explore the current knowledge assessing the importance of root exudates in plant interactions, in communications between parasitic plants and their hosts and how some soil microbial components could regulate plant species coexistence and change relationships between plants. This review will be focussed on several well documented biological processes regulating plant-plant communications such as exotic plant species invasions, negative root-root communication (allelopathy) and parasitic plant / host plant interactions and how some soil microbial components can interfere with signal traffic between roots. The reported data show that the overall effect of one plant to another results from multiple interacting mechanisms where soil microbiota can be considered as a key component. (Résumé d'auteur

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Low allelopathic potential of an invasive forage grass on native grassland plants: a cause for encouragement?

Cited by 30 publications

References 46 publications

Invasive Plants can Inhibit Native Tree Seedlings: Testing Potential Allelopathic Mechanisms

Invasive Plants can Inhibit Native Tree Seedlings: Testing Potential Allelopathic Mechanisms

Studies on Nodulating Capacity of Some Forage Legumes Grown Alone or in Mixtures

Rhizosphere microbiota interfers with plant-plant interactions

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