A5026499942- Seed Germination and Physiology
- Allelopathy and phytotoxic interactions
- Plant tissue culture and regeneration
- Weed Control and Herbicide Applications
- Sunflower and Safflower Cultivation
- Plant Molecular Biology Research
- Plant Parasitism and Resistance
- Plant Stress Responses and Tolerance
- Soybean genetics and cultivation
- Plant Reproductive Biology
- Cassava research and cyanide
- Light effects on plants
- Potato Plant Research
- Plant nutrient uptake and metabolism
- Ultrasonics and Acoustic Wave Propagation
- Plant responses to elevated CO2
- Growth and nutrition in plants
- Plant-Microbe Interactions and Immunity
- Nitrogen and Sulfur Effects on Brassica
- RNA modifications and cancer
- Plant responses to water stress
- RNA Research and Splicing
- Plant Genetic and Mutation Studies
- DNA and Nucleic Acid Chemistry
- RNA and protein synthesis mechanisms
Warsaw University of Life Sciences
2008-2024
University of Freiburg
2011-2012
South China Agricultural University
2011
University of Warwick
2011
Sorbonne Université
2007-2009
Royal Botanic Gardens, Kew
2009
Université Paris Cité
2008
University of Warsaw
2005
At harvest, sunflower (Helianthus annuus L.) seeds are dormant and unable to germinate at temperatures below 15 degrees C. Seed storage in the dry state, known as after-ripening, is associated with an alleviation of embryonic dormancy allowing subsequent germination suboptimal temperatures. To identify process by which broken during we focused on role reactive oxygen species (ROS) this phenomenon. After-ripening entailed a progressive accumulation ROS, namely superoxide anions hydrogen...
Abstract The physiological dormancy of sunflower (Helianthus annuus) embryos can be overcome during dry storage (after-ripening) or by applying exogenous ethylene hydrogen cyanide (HCN) imbibition. aim this work was to provide a comprehensive model, based on oxidative signaling reactive oxygen species (ROS), for explaining the cellular mode action HCN in alleviation. Beneficial effect germination dormant is associated with marked increase peroxide and superoxide anion generation embryonic...
Cysteine-rich receptor-like kinases (CRKs) are transmembrane proteins characterized by the presence of two domains unknown function 26 (DUF26) in their ectodomain. The CRKs form one largest groups protein plants, but biological functions have so far remained largely uncharacterized. We conducted a large-scale phenotyping approach nearly complete crk T-DNA insertion line collection showing that control important aspects plant development and stress adaptation response to biotic abiotic...
The allelopathic potential of two cultivars sunflower (Helianthus annuus L.) Lech and Ogrodowy was studied. Leaf aqueous extracts at 2.5, 5, 10 % (m/v) concentrations were applied to determine their effect on mustard (Sinapis alba) seed germination seedlings growth under laboratory conditions. Increasing concentration inhibited germination, up almost complete failure observed in the presence extract from cv. Ogrodowy. decrease germinability well correlated with increased membrane...
Freshly harvested sunflower (Helianthus annuus L.) seeds are considered to be dormant because they fail germinate at relatively low temperatures (10 degrees C). This dormancy results mainly from an embryo and disappears during dry storage. Although endogenous ethylene is known involved in seed alleviation of dormancy, little attention had been paid the possible role cyanide, which produced by conversion 1-aminocyclopropane 1-carboxylic acid ethylene, this process. The aims work were...
Abstract The completion of germination in Lepidium sativum and other endospermic seeds (e.g. Arabidopsis [Arabidopsis thaliana]) is regulated by two opposing forces, the growth potential radicle (RAD) resistance to this from micropylar endosperm cap (CAP) surrounding it. We show puncture force measurement that CAP progressively weakens during germination, we have conducted a time-course transcript analysis RAD tissues throughout process. also used specific inhibitors investigate importance...
Myrica gale L. (sweet gale) fruit leachate contains myrigalone A (MyA), a rare C-methylated dihydrochalcone and putative allelochemical, which is known to be phytotoxin impeding seedling growth. We found that MyA inhibited Lepidium sativum seed germination in dose-dependent manner. did not affect testa rupture, but endosperm rupture the transition subsequent micropylar cap (CAP) weakening increase growth potential of radical/hypocotyl region (RAD) embryo, both being key processes required...
Pectin methylesterase (PME) controls the methylesterification status of pectins and thereby determines biophysical properties plant cell walls, which are important for tissue growth weakening processes. We demonstrate here that tissue-specific spatiotemporal alterations in wall pectin occur during germination garden cress (Lepidium sativum). These changes associated with characteristic expression patterns PME genes resultant enzyme activities key seed compartments CAP (micropylar endosperm)...
Myrigalone A (MyA) is a rare flavonoid in fruit leachates of Myrica gale, deciduous shrub adapted to flood-prone habitats. As putative allelochemical it inhibits seed germination and seedling growth. Using Lepidium sativum as model target species, experiments were conducted investigate how environmental cues modulate MyA's interference with key processes germination. Time course analyses L. testa endosperm rupture under different light conditions water potentials combined quantifying...
Light is one of the most important environmental factors regulating seed germination. It known that light inhibits germination some monocotyledonous species and it mostly related to blue wavelength spectrum received by cryptochromes (cry). Research has also found red (R) stimulates dicotyledonous seeds this reaction involves mainly phytochromes (phy). Surprisingly, up date, role mechanism action (BL) in biology dicot plants still very poorly understood questions are unexplained, e.g.,...
Abstract Main conclusion Our data link the miR165/166- and miR160-mediated regulatory modules to ROS seed formation. Trade-offs of size, weight, number probably require control expression miR165/166 by miR160, modulation metabolism miR165/166, miR160 abundance ROS-induced oxidative modifications The cycle plant life its yield productivity depends fundamentally on establishment trade-offs number. For annual plants, should simply be a positive function vegetative biomass negative size and/or...