A5062222698- Photosynthetic Processes and Mechanisms
- Plant Stress Responses and Tolerance
- Plant tissue culture and regeneration
- Plant-Microbe Interactions and Immunity
- Plant Reproductive Biology
- Endoplasmic Reticulum Stress and Disease
- Algal biology and biofuel production
- Plant Pathogens and Fungal Diseases
- Plant responses to elevated CO2
- Legume Nitrogen Fixing Symbiosis
- Mycorrhizal Fungi and Plant Interactions
- Plant Molecular Biology Research
- Plant Micronutrient Interactions and Effects
- Plant and animal studies
- Nematode management and characterization studies
- Diatoms and Algae Research
- Plant nutrient uptake and metabolism
- Plant Parasitism and Resistance
- Polysaccharides and Plant Cell Walls
- Toxin Mechanisms and Immunotoxins
- Plant responses to water stress
- Plant biochemistry and biosynthesis
- Light effects on plants
- Yeasts and Rust Fungi Studies
- Ginkgo biloba and Cashew Applications
University of Padua
2015-2024
UniCredit (Italy)
2021
PAGEPress (Italy)
2009
University of Oxford
2002
United States Nuclear Regulatory Commission
2000
Centro di Riferimento Oncologico
2000
Biolog (United States)
1995
University of Ferrara
1993
In many soils plants have to grow in a shortage of phosphate, leading development phosphate-saving mechanisms. At the cellular level, these mechanisms include conversion phospholipids into glycolipids, mainly digalactosyldiacylglycerol (DGDG). The lipid changes are not restricted plastid membranes where DGDG is synthesized and resides under normal conditions. plant cells deprived mitochondria contain high concentration DGDG, whereas no glycolipids control cells. Mitochondria do synthesize...
The response of both specific (ascorbate peroxidase, APX) and unspecific (POD) peroxidases H(2)O(2) content sunflower plants (Helianthus annuus L. cv. Hor) grown hydroponically with (C) or without (-Fe) iron in the nutrient solution were analysed to verify whether deficiency led cell oxidative status. In -Fe leaves a significant increase was detected, result confirmed by electron microscopy analysis. As regards extracellular peroxidases, while APX activity significantly decreased, no change...
A previous analysis showed that Gammaproteobacteria could be the sole recoverable bacteria from surface-sterilized nodules of three wild species Hedysarum. In this study we extended to eight Mediterranean native, uninoculated legumes never previously investigated regarding their root-nodule microsymbionts. The structural organization was studied by light and electron microscopy, bacterial occupants were assessed combined cultural molecular approaches. On examination 100 field-collected...
Abstract The implication of calcium as intracellular messenger in the arbuscular mycorrhizal (AM) symbiosis has not yet been directly demonstrated, although often envisaged. We used soybean (Glycine max) cell cultures stably expressing bioluminescent Ca2+ indicator aequorin to detect changes response culture medium spores Gigaspora margarita germinating absence plant partner. Rapid and transient elevations cytosolic free were recorded, indicating that diffusible molecules released by fungus...
Programmed cell death (PCD) has been recognized as a fundamental cellular process conserved in metazoans, plants and yeast. However, the mechanisms leading to PCD have not fully elucidated unicellular organisms. Evidence is presented that heat stress induces Chlorella saccharophila cells. Our results demonstrate shock triggers pathway occurring with characteristics features such chromatin condensation, DNA fragmentation, shrinkage detachment of plasma membrane from wall, suggest presence...
The phenylpropanoid and flavonoid families include thousands of specialized metabolites that influence a wide range processes in plants, including seed dispersal, auxin transport, photoprotection, mechanical support protection against insect herbivory. Such play key role the plants abiotic stress, many cases through their well-known ability to inhibit formation reactive oxygen species (ROS). However, precise specific molecules is unclear. We therefore investigated anthocyanins (ACs) other...
Bacillus licheniformis GL174 is a culturable endophytic strain isolated from Vitis vinifera cultivar Glera, the grapevine mainly cultivated for Prosecco wine production. This was previously demonstrated to possess some specific plant growth promoting traits but its attitude and role in biocontrol only partially explored. In this study, potential action of investigated vitro vivo and, by genome sequence analyses, putative functions involved plant-bacteria interaction were assessed. Firstly,...
• Chitosan, a component of the cell wall many fungi, has been widely used to mimic pathogen attack and shown induce several defence responses. Here we show that low concentrations (50 µg ml−1) chitosan are able an increase in cytosolic Ca2+ concentration ([Ca2+]cyt), accumulation H2O2 culture medium, induction gene chalcone synthase (chs), death soybean cells (Glycine max). Chitosan-induced occurred through cytoplasmic shrinkage, chromatin condensation activation caspase 3-like protease,...
Eukaryotic microalgae are highly suitable biological indicators of environmental changes because they exposed to extreme seasonal fluctuations. The biochemical and molecular targets regulators key proteins involved in the stress response have yet be elucidated. This study presents morphological evidence programmed cell death (PCD) a low temperature strain Chlorella saccharophila induced by exposure NaCl stress. Morphological characteristics PCD, including shrinkage, detachment plasma...
Calcium is commonly involved as intracellular messenger in the transduction by plants of a wide range biotic stimuli, including signals from pathogenic and symbiotic fungi. Trichoderma spp. are largely used biological control plant diseases caused fungal phytopathogens able to colonize roots. Early molecular events underlying their association with relatively unknown. Here, we investigated effects on cells metabolite complexes secreted atroviride wild type P1 deletion mutant this strain...
We investigated the potential plant growth-promoting traits of 377 culturable endophytic bacteria, isolated from Vitis vinifera cv. Glera, as good biofertilizer candidates in vineyard management. Endophyte ability promoting growth was assessed vitro by testing ammonia production, phosphate solubilization, indole-3-acetic acid (IAA) and IAA-like molecule biosynthesis, siderophore lytic enzyme secretion. Many isolates were able to mobilize (33%), release ammonium (39%), secrete siderophores...
Endophytes are micro-organisms that colonize the internal tissues of plants without inducing signs negative effects and can provide benefits to plant health yield. In present work, culturable bacterial endophyte community, colonizing vegetative organs grapevine, was isolated from surface-sterilized characterized by molecular methods. From roots, shoots leaves Vitis vinifera "Glera", located in six different vineyards throughout Conegliano-Valdobbiadene DOCG area (Veneto, Italy), 381 strains...
Chloroplasts require a fine-tuned control of their internal Ca
Despite their essential role in the environment, number of known fungal species is still low compared to recent estimates biodiversity, principally because often cryptic or ambiguous morphological traits. Recent studies have reported that DNA sequences deposited public databases and representing correctly a appears dramatically (approx. 120,000) when with estimated total from 2.2 3.8 million). Thus, linkage curated sequence data expertly identified voucher specimens fundamental importance...
Under phosphate deprivation, higher plants change their lipid composition and recycle from phospholipids. A phospholipase D, PLDζ2, is involved in this recycling other cellular functions related to plant development. We investigated the localization of Arabidopsis PLDζ2 by cell fractionation vivo GFP confocal imaging. AtPLDζ2 localizes tonoplast Nter regulatory domain sufficient for its sorting. remains located but distribution uneven. observed PLDζ2‐enriched domains preferentially...
Summary The Abc1 protein kinases are a large family of functionally diverse proteins with multiple roles in the regulation respiration and oxidative stress tolerance. A functional characterization was carried out for At SIA 1, an Arabidopsis thaliana Abc1‐like protein, focusing on its potential redundancy homolog OSA 1. Both located within chloroplasts, even if different subplastidial localization seems probable. comparison atsia1 atosa1 mutants, atsia1/atosa1 double mutant wild‐type plants...
Trichoderma filamentous fungi are increasingly used as biocontrol agents and plant biostimulants. Growing evidence indicates that part of the beneficial effects is mediated by activity fungal metabolites on host. We have investigated mechanism perception HYTLO1, a hydrophobin abundantly secreted longibrachiatum, which may play an important role in early stages plant-fungus interaction. Aequorin-expressing Lotus japonicus suspension cell cultures responded to HYTLO1 with rapid cytosolic Ca2+...
In an attempt to identify the origin of cells capable generating somatic embryos, hypocotyl explants from carrot seedlings were cultured in presence auxin. The various tissues responded different ways. external layers (epidermis, cortical parenchyma) expanded, whereas provascular divided and expanded. Hence only latter can generate cell lines embryos. A cyto-histological analysis showed that pro-embryogenic masses, which embryos develop absence auxin, are generated same which, after a proper...