Some peculiarities of Lythrum salicaria nutrition (2025)

Competition between Lythrum salicaria and a rare species: combining evidence from experiments and long-term monitoring

Plant Ecology, 2007

The rare endemic plant Sidalcea hendersonii (Henderson's checker-mallow) occurs in tidal marshes of the Pacific Northwest and may be threatened by Lythrum salicaria (purple loosestrife), a European invader plant. We compared the abundances of Lythrum and Sidalcea in a wetland in British Columbia (Canada) in 1999 to those measured in 1979 to track changes in both species. Although the frequency of Sidalcea decreased by more than 50%, and that of Lythrum increased by almost 20%, there was no significant relationship between the changes of the two species. We assessed the potential effects of competition by Lythrum on Sidalcea in field and patio experiments. In the field, we measured the response of Sidalcea to the removal of Lythrum over a two-year period and compared this to the response of Sidalcea to the removal of native species and in unmanipulated control plots.

The Effect of a Competitor Species on the Seedling Development of Lythrum salicaria

Hortscience, 1995

To determine when a paper is to be presented, check the session number in the Program Schedule or the Conference at a Glance charts. The Author presenting the paper is indicated by an asterisk.

Erratum: Biological activity and microscopic characterization of Lythrum salicaria L

DARU Journal of Pharmaceutical Sciences, 2014

Background: There are several plants have been used worldwide in the folk medicine with high incidence for treatment of human disorders, of which Lythrum salicaria belongs to the Lythraceae family has traditionally reputation for some medicinal usage and recently many biological and pharmacological activity of the plant have been studied. Methods: In this study, microscopic characterizations of the aerial parts of the plant were determined. Moreover, the plant extract (aqueous methanol 80%) was subjected to an anti-diabetic activity test (in a rat model of streptozocin induced diabetes), anti-Helicobacter pylori (using disc diffusion method) along with antioxidant activity against DPPH (stable free radical) tests. Besides, total flavonoids, phenols, tannins, as well as polysaccharides contents have been assessed using spectroscopic methods. Results: The microscopic properties of the plant fragments revealed anomocytic stomata, conical shape trichomes, and abundant spherical pollen grains as a characteristic pattern for the aerial parts of the plant. The extract of the plant at concentration of 15 g/kg showed mild lowering activity on blood glucose level to 12.6% and 7.3% after 2 and 3 h of administration. Additionally, clinically isolated H. pylori strain was inhibited with the plant extract at concentration of 500 mg/mL (zone of inhibition: 17 ± 0.08 mm). Moreover, IC 50 values for DPPH inhibition of the plant extract, vitamin E, BHA were examined as 13.5, 14.2, and 7.8 μg/mL, respectively. Total flavonoids, phenols, tannin, and polysaccharides contents of the extract were successfully evaluated as 5.8 ± 0.4 μg QE/mg EXT, 331 ± 3.7 μg GAE/mg EXT, 340 ± 2.3 μg TAE/mg EXT, 21 ± 0.2 μg GE/mg EXT, respectively.

Reproductive effort as an element of life strategy of Lythrum salicaria L. populations

Acta Agrobotanica, 2007

The aim of the study was to compare some life strategy traits of individuals of Purple Loosestrife Lythrum salicaria within three meadow populations existing under various habitat conditions. The study attempted to answer the following questions: Do different habitat conditions affect the biomass allocation between particular organs of individuals? Can the individuals belonging to different populations of the same species realise their own unique reproductive strategy, in other words, can their reproductive effort represent various levels? In the case of L. salicaria the reproductive effort, measured by the participation of infl orescence biomass in the biomass of aboveground parts of genets, exhibits similar values (14.2-15.1%) in all the study populations, despite their habitat conditions. This fact proves that at the population level, the reproductive effort is relatively stable. Great differences are visible in the case of particular individuals within each of the populations. S...

Variability of total flavonoid, polyphenol and tannin contents in some Lythrum salicaria populations

Natural product communications

Lythrum salicaria L. can vary in some morphological and phytochemical features according to its habitat. The present study investigates and compares the total flavonoid, polyphenol and tannin composition of twelve populations of L. salicaria collected from different ecological habitats in south-west Hungary. We studied the plant heights and soil moistures of the habitats analyzing the potential correlation between the morphological and environmental factors and chemical compositions. Total flavonoid, polyphenol and tannin contents were determined according to the valid spectroscopic methods of the European Pharmacopoeia. Total flavonoid content was higher in the populations collected during the main blooming period in August than at the beginning of flowering in July. Higher values for total polyphenol and tannin were detected in flowering branch tips in August than in July, and higher ones in leaves and shoots in July than in August. The highest flavonoid content was measured in th...

Growth of Lythrum salicaria and Phragmites australis plants originating from a wide geographical area: response to nutrient and water supply

Global Ecology and Biogeography, 2004

The response of L. salicaria and P. australis plants originating from a broad latitudinal gradient to mineral nutrient and water supply was studied. We suggest implications for mechanisms possibly underlying the invasiveness of these two plant species.

An efficient in vitro regeneration system for Lythrum salicaria

Biologia Plantarum, 2009

This report describes an efficient plant regeneration system for the medicinal plant Lythrum salicaria via direct adventitious shoot development from leaf and stem explants. Leaf explants were much more responsive to regeneration than stem segments. Of the hormonal combinations tested, those involving thidiazuron (TDZ; 0.1, 0.3 or 0.5 mg dm -3 ) were more effective than the combinations of other hormones and 0.1 mg dm -3 TDZ combined with either indole-3acetic acid (IAA) or indole-3-butyric acid (IBA) was the most productive. Rooting was readily achieved when multiple shoots were singled out and cultured on medium containing different auxins. IAA was the most effective on root development in terms of both the number of roots per shoot and the frequency of rooted shoots. More than 90 % of the regenerants survived after hardening for four weeks at gradually decreased air humidity.

Early stages of decay of Lythrum salicaria L. and Typha latifolia L. in a standing-dead position

Aquatic Botany, 2003

Lythrum salicaria (purple loosestrife) has invaded wetlands across North America and is known to have negative effects on native plant species and diversity. The effects of this invasion on ecosystem processes are less well known. We examined decomposition of L. salicaria stems versus that of native Typha latifolia (broad-leaved cattail) in a previously cultivated, freshwater marsh in central New York State. We expected different decomposition rates and differences in litter quality of L. salicaria stems and T. latifolia shoots. We also quantified ergosterol concentration, an index of fungal biomass. However, standing-dead T. latifolia shoots and L. salicaria stems had lost similar quantities of mass (20-25%) after 1 year. Subsequent heavy snowfall and winter winds caused tissue fragmentation and much greater mass loss, but still similar for both plant species. Ergosterol concentrations were greater in T. latifolia shoots than in L. salicaria stems; yet, changes in tissue concentrations of nitrogen (N) and Klason lignin were very similar for both plant species. Therefore, although native T. latifolia may be more favorable in wetlands, the results of this study suggest that L. salicaria stems and T. latifolia shoots decompose in a similar fashion and have similar influence on the ecosystem-level processes measured in this study.

Pythium Species as Biocontrol Agents

2020

A SCIENCE PUBLISHERS BOOK p, Pythium Diagnosis, Diseases and Management Cover illustration provided by Prof. Francois Barja. Designing assistance from Bengisu Sengun.

Possible Role of Competition for Nutrients in Biocontrol of Pythium Damping-Off by Bacteria

Phytopathology, 1987

Of the 130 bacteria isolated from the rhirospheres of plants infrsted with Pi-isitum spp , six wsere found to beefficient biocontrol agents of this paihogtn under greenhouse conditions No lyric emmes were involved in in sitro interactions beItseen the bacteria and P aphanidernamint Substances inhibiting growth of the fungus were produced by both the biocontrol agents andollier rh,-obact-rii On the other handcompetntion ior nutrients between germinating oospores of P aphanidermiatur and bacteria. which was unique to the biocontrol agents, significantly correlated with suppression of disease in the greenhouse Oospore germination inrhizospheres of wheat, tomato, cucumber, melon, bean. and cotton plants was derreased in the presence ot these bacteria Broadcast Rhizobacterta, by their interactions with various pathogens, play a major role in the biological equilibrtum among microorganisms in the rhizosphere (1,23) Pt'ihium spp. have a broad host range and cause preemergence and postemergence damping-off and root rots followed by considerable yield losses in many important crops Biological control of this pathogen with bacteria is not well established. Mitchell and Hurvttz (15) protected tomato seedlings against damping-off caused by P. debarranum Hesse with a lytic strain of Arthrobacter, and Hadar et al (7) protected germinating cucumber seeds with Enterobacter cloacae (Jordan) Harm & Edwar from rots caused by Pthutum spp Howell and Stipanovic (9) isolated a strain of Picudomonas fluorescens Migula that produces an antibiotic inhibiting growth of Pithitar iltmunt Trow on seeds Rhizobacteria have beena the subject of several reports (11,12,16). It was suggested that the antibiotics or siderophores produced by these bacteria displace deleterious microorganisms, presumably minor pathogens (11, 12). In such a case, competition with the native microflora should also be considered. The objectivesofthepresent work wereto isolatepotenttalantagonistic rhizobacteria, apply them against Pythiurn damping-off, and invest;-ate their antagonistic mechanism, MATERIALS AND METHODS Isolation and characterization of bacteria. One hundred thirty bacteria were isolated from roots of bean, cotton, radish, cucumber, and melon plants grown in soils infested with Ptthtum spp. or in peat-vermiculite growth media (PVM). Isolations were made on nutrient agar (NA) (Becton-Dickinson Corp., Cockeysville, MO) cr King's medinm B (KB) (10). Bacteria were identified by the Analytical Profile Index (API) system (La Balme The pubib eal, i costs ol hisarticle were defrayed in par by page charge payment This article must tIherelore marked behereby 'adverttsemert-rn accordance with ii U S C 1734 solely i indicate thiisact PHYTOPATHOLOGY I R cdi C: PO T *-...~ ,2 (M). 310 (V7),814 (0'). or untreated (o).