A5065512262- Allelopathy and phytotoxic interactions
- Weed Control and Herbicide Applications
- Plant Stress Responses and Tolerance
- Photosynthetic Processes and Mechanisms
- Plant Parasitism and Resistance
- Plant tissue culture and regeneration
- Plant Molecular Biology Research
- Plant biochemistry and biosynthesis
- Microtubule and mitosis dynamics
- Nigella sativa pharmacological applications
- Pain Mechanisms and Treatments
- Plant Genetic and Mutation Studies
- Plant nutrient uptake and metabolism
- Insect and Pesticide Research
- Heavy metals in environment
- Plant and animal studies
- Chemical synthesis and alkaloids
- Fungal Plant Pathogen Control
- Cancer Treatment and Pharmacology
- Plant responses to elevated CO2
- Botulinum Toxin and Related Neurological Disorders
- Plant Micronutrient Interactions and Effects
- Hops Chemistry and Applications
- Plant Reproductive Biology
- Plant Gene Expression Analysis
Universidade de Vigo
2011-2023
University of Lausanne
2022
Faculty (United Kingdom)
2012
ABSTRACT This review provides information on the biological activities of chalcones (whether natural or synthetic derivatives) different organisms, as well an overview functions and possible new applications these plant secondary metabolites crop protection, eco-friendly pesticides weed control agents. Naturally occurring have been used in traditional medicine for many years; however, recent scientific advances shown that molecules a broad range variety organisms. A major sources main...
ABSTRACT Chalcone (1,3‐diphenyl‐2‐propen‐1‐one) is an aromatic ketone precursor of important molecules in plants such as flavonoids or anthocyanins. Its phytotoxicity has been demonstrated on different plant species, but to date little known about the mechanisms action this secondary metabolite at cellular level. Detailed analysis by light and transmission electron microscopy (TEM) was conducted examine root meristems' ultrastructure control chalcone‐treated Arabidopsis seedlings....
trans-Caryophyllene (TC) is a sesquiterpene commonly found as volatile component in many different aromatic plants. Although the phytotoxic effects of trans-caryophyllene on seedling growth are relatively explored, not information available regarding phytotoxicity this sesquiterpenes weed germination and adult The potential TC was assayed vitro to validate its species. Moreover, it metabolism Arabidopsis thaliana plants, through two application ways, spraying watering, order establish...
Mode of action farnesene, a volatile sesquiterpene commonly found in the essential oils several plants, was deeply studied on model species Arabidopsis thaliana. The effects farnesene root morphology were evaluated by different microscopic techniques. As well, microtubules immunolabeling, phytohormone measurements and ROS staining helped us to elucidate single or multi-modes this plant metabolism. Farnesene-treated roots showed strong growth inhibition marked modifications morphology,...
Citral is a monoterpene commonly found as volatile component in many different aromatic plants. Although studies have identified the presence of citral phytotoxic essential oils, this work determines for first time potential herbicidal effect on weeds. The use against weeds and crops resulted management barnyardgrass, redroot pigweed, ribwort. Clear morphological differences were observed between adult thale cress plants exposed to two application methods: spraying watering. Citral-sprayed...
Four terpenoids, camphor, pulegone, trans-caryophyllene and farnesene, previously found in Calamintha nepeta (L.) Savi methanolic extract essential oils were assayed on germination root growth of Arabidopsis thaliana Heynh. None the terpenes, singularly or combination, was able to inhibit process. Farnesene caused a strong inhibitory effect growth, at highest concentrations, reduced lateral formation. Although mixture camphor-trans-caryophyllene with without farnesene did not cause any...
Trans-cinnamaldehyde is a specialised metabolite that naturally occurs in plants of the Lauraceae family. This study focused on phytotoxic effects this compound morphology and metabolism Arabidopsis thaliana seedlings.To evaluate phytotoxicity trans-cinnamaldehyde, dose-response curve was first performed for root growth process order to calculate reference inhibitory concentrations IC50 IC80 (trans-cinnamaldehyde inducing 50% 80% inhibition, respectively). Subsequently, structure...
The abuse of synthetic pesticides in weed management causes serious environmental problems: disruption ecological balance, harmful effects on human health and higher incidence herbicide-resistant weeds. Due to this, efforts are being directed develop new eco-friendly compounds with non-toxic modes action. Some plant secondary metabolites an important source formulate bioherbicides. Monoterpenes one the largest most groups metabolites, some which have already reported phytotoxic activity that...
Based on previous results, which showed that the secondary metabolite citral causes disturbances to plant water status, present study is focused demonstrating and detailing these effects water-related parameters of Arabidopsis thaliana adult plants, their impact fitness. Clear evidence status fitness were observed: plants treated with 1200 2400 μm decreased RWC, reduced Ψs , increased Ψw stomatal opening, even 7 days after beginning experiment. Plant protection signals, such as leaf rolling...
Abstract BACKGROUND New modes of action are needed for herbicides. The flavonoid synthesis intermediate t ‐chalcone causes apoptosis‐like symptoms in roots and bleaching shoots Arabidospsis, suggesting a unique mode as phytotoxin. RESULTS Using RNA‐Seq, transcriptome changes were monitored Arabidopsis seedlings during the first 24 h exposure (at 1, 3, 6, 12 h) to 21 μ m (I 50 dose), examining effects on separately. Expression 892 1000 genes was affected shoots, respectively. According...
The mechanism of phytotoxicity citral was probed in Arabidopsis thaliana using RNA-Seq and silico binding analyses. Inhibition growth by 50% downregulated transcription 9156 5541 genes roots shoots, respectively, after 1 h. Only 56 62 were upregulated. In the downregulation increased at 3 h (6239 downregulated, vs 66 upregulated). Of all affected (time greatest effect), 7.69% for nucleic acid functions. Genes single strand DNA proteins (SSBP) WHY1, WHY 2 WHY3 strongly shoot up until 12...
Chalcone is a secondary metabolite belonging to the group of flavonoids. It has shown strong phytotoxic activity on Arabidopsis roots, as inductor programmed cell death, and inhibitor root growth hair formation. Peroxidases are particularly abundant in meristems involved formation interconversion reactive oxygen species (ROS), which play critical role development. Therefore, we report here peroxidases development during chalcone treatment. A inhibition peroxidase was detected apical after...
The sesquiterpene farnesene and the monoterpene citral are phytotoxic natural compounds characterized by a high similarity in macroscopic effects, suggesting an equal or similar mechanism of action when assayed at IC50 concentration. In present study, short-time experiment (24 48 h) using imaging spectrofluorometer allowed us to monitor in-vivo effects two molecules, highlighting that both terpenoids were similarly affecting all PSII parameters, even quicker appearing than those farnesene....