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383 results for “Lolium perenne”
Lolium perenne L. f. ramosum (Schumach.) Holmb. (BR0000011557883)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lolium perenne L. (BR0000012542147)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lolium perenne L. (BR0000011556527)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lolium perenne L. f. ramosum (Schumach.) Holmb. (BR0000011558361)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lolium perenne L. (BR0000012349364)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lolium perenne L. (BR0000012601264)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Fig. 1 in Infection of perennial ryegrass (Lolium perenne) by an endophyte fungus (Neotyphodium lolii) decreases the abundance and diversity of predators and parasitoids
Fig. 1. Total number of predators collected from Jumbo (E-) and Alto AR1 (E+) perennial ryegrass. A) Number of spiders and B) the number of insects. * indicates significant differences according to the chi-square test.
Single and mixed arbuscular mycorrhizal fungal species inocula have a different effect on the growth and oxidative stress defense in Lolium perenne exposed to phenol and polynuclear aromatic hydrocarbons
<p>Arbuscular mycorrhizal fungi (AMF) are ubiquitous mutualistic plant symbionts which promote plant growth and protect them from abiotic stresses. Studies on AMF-assisted phytoremediation have shown that AMF can increase plant tolerance to the presence of hydrocarbon contaminants by improving plant nutrition status and mitigating oxidative stress. This work aimed to evaluate the impact of single-species or mixed-species AMF inocula, obtained from the contaminated environment (<i>Funneliformis caledonium</i>, <i>Diversispora varaderana</i>, <i>Claroideoglomus walkeri</i>), on a growth, oxidative stress (DNA oxidation and lipid peroxidation) and activity of antioxidative enzymes (superoxide dismutase, catalase, peroxidase) in <i>Lolium perenne</i> cultured in a substrate contaminated with 0/0 - 30/120 mg phenol/polynuclear aromatic hydrocarbons (PAHs) kg<sup>-1</sup>. The assessment of AMF resistance to the presence of contaminants was based on mycorrhizal root colonization, spore production, the level of oxidative stress and antioxidative activity in AMF spores. In contrast to the mixed-species AMF inoculum, single AMF species significantly enhanced the growth of host plants cultured in the contaminated substrate. Their effect on the level of oxidative stress and the activity of antioxidative enzymes in plant tissues differed between the AMF species. Changes in the level of oxidative stress and the activity of antioxidative enzymes in AMF spores in response to contamination also depended on AMF species. Although, the concentration of phenol and PAHs had a negative effect on the production of AMF spores, low (5/20 mg phenol/PAHs kg<sup>-</sup>1) and substrate (15/60 mg phenol/PAHs kg<sup>-1</sup>) contamination stimulated the mycorrhizal colonization of roots. Among the studied AMF species, <i>F. caledonium</i> was the most resistant to phenol and PAHs and showed the highest potential in plant growth promotion. Adverse effects of mixed AMF inoculum on <i>L. perenne</i> growth might result from the competitive associations between the AMF species and excessive development of <i>C. walkeri</i>. Presented results might contribute to the development of functionally customized strategies of AMF-assisted phytoremediation with indigenous AMF inocula, adapted to form mycorrhizal associations in the presence of contaminants, which might enhance phytoremediation more effective than commercial AMF inocula.</p>
Data from: Genetic diversity and structure of Lolium perenne ssp. multiflorum in California vineyards and orchards indicates potential for spread of herbicide resistance via gene flow
Management of agroecosystems with herbicides imposes strong selection pressures on weedy plants leading to the evolution of resistance against those herbicides. Resistance to glyphosate in populations of Lolium perenne L. ssp. multiflorum is increasingly common in California, USA, causing economic losses and the loss of effective management tools. To gain insights into the recent evolution of glyphosate resistance in L. perenne in perennial cropping systems of northwest California and to inform management, we investigated the frequency of glyphosate resistance and the genetic diversity and structure of 14 populations. The sampled populations contained frequencies of resistant plants ranging from 10% to 89%. Analyses of neutral genetic variation using microsatellite markers indicated very high genetic diversity within all populations regardless of resistance frequency. Genetic variation was distributed predominantly among individuals within populations rather than among populations or sampled counties, as would be expected for a wide-ranging outcrossing weed species. Bayesian clustering analysis provided evidence of population structuring with extensive admixture between two genetic clusters or gene pools. High genetic diversity and admixture, and low differentiation between populations, strongly suggests the potential for spread of resistance through gene flow and the need for management that limits seed and pollen dispersal in L. perenne.
Data from: Genetic diversity and structure of Lolium perenne ssp. multiflorum in California vineyards and orchards indicates potential for spread of herbicide resistance via gene flow
Open the record for dataset details and reuse information.
Lolium perenne L. (BR0000012276011)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lolium perenne L. (BR0000011559764)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lolium perenne L. (BR0000010669402)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lolium perenne L. (BR0000011557623)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lolium perenne L. (BR0000011557296)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lolium perenne L. (BR0000011557746)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lolium perenne L. (BR0000011557999)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lolium perenne L. f. viviparum (Gray) Holmb. (BR0000012602841)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lolium perenne L. f. ramosum (Schumach.) Holmb. (BR0000011557197)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lolium perenne L. (BR0000011558835)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
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