Germination inhibitory activity of aqueous extracts of native grasses from South America

Scrivanti, Lidia Raquel; Antón, Ana M.

doi:10.1590/2175-7860202172028

Cited by 5 publications

(5 citation statements)

References 26 publications

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“…Another functional trait identified was the ability of natives to self-protect, which can be both offensive and defensive. Offensive strategies include the usage of allelopathy to reduce germination rates in seeds of other species (Scrivanti and Anton, 2021). The South American native species of Bothriochloa spp.…”

Section: Discussionmentioning

confidence: 99%

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Native grasses’ potential of providing ecological weed suppression in rangeland and natural areas: A scoping review

Zhang

Galvin

2023

Outlook Agric

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Weedy species invasions are a huge problem in rangeland and natural areas as they degrade the quality and quantity of forage for livestock and reduce biodiversity. Weed suppression using native grasses is an ecologically driven method of weed management, representing an opportunity for low-input and management over long temporal scales if these systems can be successfully established. A systemic literature review was conducted to explore the interactions between native grasses and weeds, and revealed the potential of native grasses to provide a reduction in weed presence through interactions with other biological communities. We proposed the merging of agronomic and breeding techniques with restoration efforts such as using specialized seeding techniques to establish native grasses in these systems. A generalized planning framework for land managers is also presented, emphasizing the consideration of functional traits for competitive advantage against weeds and germplasm availability as the main considerations for species selection. Management strategies that provide advantages to native grasses such as land clearance and strategic disturbances were also discussed. Suppression can occur through a variety of mechanisms including direct competition with weeds, indirect interactions through trophic levels of arthropods and grazers, and human-induced disturbances. From our results, we believe that native grasses can potentially play an important role in efficacious weed suppression if utilized tactfully.

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Section: Discussionmentioning

confidence: 99%

“…The South American native species of Bothriochloa spp. produced allelopathic chemicals that had a strong inhibitory effect on weed seed germination (Scrivanti and Anton, 2021). Conversely, a defensive approach is the ability of native species to resist allelopathy from weeds (Shang et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Native grasses’ potential of providing ecological weed suppression in rangeland and natural areas: A scoping review

Zhang

Galvin

2023

Outlook Agric

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“…Location Coordinates Aqueous extracts. In order to obtain the aqueous extracts, we used a method adapted from the one described by Scrivanti (Scrivanti 2010, Scrivanti et al 2011, Scrivanti & Anton 2019, 2021. Five grams of fresh leaf blades from each Imperata plant were crushed with a blender.…”

Section: Imperata Species Collection Number (Cord)mentioning

confidence: 99%

Preliminary report on the allelopathic potential of South American Imperata species (Poaceae: Andropogoneae)

2023

Self Cite

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Background: A significant number of species of grasses (Poaceae) have allelopathic properties and two genera of Andropogoneae -Cymbopogon and Bothriochloa- are the main aromatic genera recognized in the family. The genus Imperata (Poaceae: Andropogoneae) is widely distributed, with several species being present around the world. Questions and / or Hypotheses: This study assessed the allelopathic potential of some South American species of Imperata taking into account previous reports on I. cylindrica, which has been extensively studied due to its invasiveness and allelopathic potential. Studied species / data description /Mathematical model: I. brasiliensis, I. condensata, I. minutiflora, and I. tenuis Study site and dates: Greenhouse of the Instituto Multidisciplinario de Biología Vegetal, Sistemática y Filogeografía de Plantas, Córdoba, Argentina. Methods: We obtain the aqueous extract from the studied species and we evaluated its effect on germination and root and shoot growth of lettuce, corn, and tomato. Results: In bioassays, aqueous leaf extract of I. brasiliensis, I. condensata, I. minutiflora, and I. tenuis inhibited seed germination and root and shoot growth of lettuce (Lactuca sativa), tomato (Solanum lycopersicum), and maize (Zea mays). The extracts mainly affected root and shoot length, whereas the effect on seed germination was low. Conclusions: The studied species may contain allelochemicals, which interfere with seed germination and seedling growth. Future research on the type of chemical compounds present in aqueous extracts may contribute to their use for agroecological purposes.

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“…The allelopathic effect depends on the donor and recipient species, their growth stage, and the toxicity level of the released allelochemicals [1]. The study on grass species has demonstrated the existence of phenolic compounds such as vanillic acid, chlorogenic acid, caffeic acid, ferulic acid, and coumaric acid [25] and allelopathic activity in some genotypes and species of grasses, which can have an inhibitory effect on weed germination and growth [11,26,27].…”

Section: Introductionmentioning

confidence: 99%

Allelopathic Effect of Aqueous Extracts of Grass Genotypes on Eruca Sativa L.

Motalebnejad,

Karimmojeni,

Majidi

et al. 2023

Plants

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The aim of the current research is to evaluate the allelopathic activity of fifty grass genotypes from different species and to identify phenolic compounds in the genotypes that have the highest allelopathic activity and inhibitory effect on Eruca sativa L. (Rocket). Aqueous extract was prepared from the leaves of grass genotypes in different concentrations and its effect on germination and growth of E. sativa L. was measured. According to the results, the type of genotype and the concentration of the extract significantly decreased the percentage of germination, hypocotyl length, radicle length, and dry weight of E. sativa L. seedlings. Increasing the concentration of the extract resulted in a decrease in germination and growth of seedlings. The genotypes of Festulolium (Festulolium) (GR 5009, GR 1692, GR 5004) had the most inhibitory effect on the growth of E. sativa L. Also, among the genotypes studied, two genotypes (DG-M) and (DG-P) of Dactylis glomerata L. (orchardgrass) species showed the least allelopathic activity. The results of HPLC-MS indicated nine phenolic compounds including caffeic acid, syringic acid, vanillic acid, p-coumaric acid, ferulic acid, apigenin acid, chlorogenic acid, 4-hydroxybenzoic acid, and gallic acid. The phenolic compound most present in the aqueous extract was caffeic acid. However, phenolic compounds derived from Festulolium genotypes showed the greatest allelopathic action on the growth parameters of E. sativa L. The aqueous extracts of the Festulolium genotypes can be considered valid systems of sustainable weed control thanks to the phytocomplex rich in phenols.

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Germination inhibitory activity of aqueous extracts of native grasses from South America

Cited by 5 publications

References 26 publications

Native grasses’ potential of providing ecological weed suppression in rangeland and natural areas: A scoping review

Native grasses’ potential of providing ecological weed suppression in rangeland and natural areas: A scoping review

Preliminary report on the allelopathic potential of South American Imperata species (Poaceae: Andropogoneae)

Allelopathic Effect of Aqueous Extracts of Grass Genotypes on Eruca Sativa L.

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