A5030140594- Plant Molecular Biology Research
- Plant Stress Responses and Tolerance
- Plant tissue culture and regeneration
- Aluminum toxicity and tolerance in plants and animals
- Plant nutrient uptake and metabolism
- Arsenic contamination and mitigation
- Plant Reproductive Biology
- Palliative Care and End-of-Life Issues
- Plant Parasitism and Resistance
- Plant responses to water stress
- Photosynthetic Processes and Mechanisms
- Cancer survivorship and care
- Childhood Cancer Survivors' Quality of Life
- Polysaccharides and Plant Cell Walls
- Plant Physiology and Cultivation Studies
- Protein Degradation and Inhibitors
- Patient Dignity and Privacy
- Flowering Plant Growth and Cultivation
- Agriculture, Soil, Plant Science
- Plant Gene Expression Analysis
- Plant and animal studies
- Nausea and vomiting management
- Peroxisome Proliferator-Activated Receptors
- Pain Management and Opioid Use
- Seed Germination and Physiology
Sapienza University of Rome
2015-2024
Ospedale Policlinico San Martino
2023-2024
University of Bologna
2015
University of Siena
2015
University of Milan
2009
Adventitious roots (ARs) are part of the root system in numerous plants, and required for successful micropropagation. In Arabidopsis thaliana primary (PR) lateral (LRs), quiescent centre (QC) stem cell niche meristem controls apical growth with involvement auxin cytokinin. arabidopsis, ARs emerge planta from hypocotyl pericycle, different tissues vitro cultured explants, e.g. endodermis thin layer (TCL) explants. The aim this study was to investigate establishment maintenance QC arabidopsis...
Cadmium (Cd) and arsenic (As), non essential, but toxic, elements for animals plants are frequently present in paddy fields. Oryza sativa L., a staple food at least the half of world population, easily absorbs As Cd by root, this organ pollutants evoke consistent damages, reducing/modifying root system. Auxins key hormones regulating all developmental processes, including organogenesis. Moreover, respond to environmental stresses, such as those caused As, changing levels distribution...
The research was focussed on the effects of cadmium (Cd) and arsenic (As), alone or combined, Arabidopsis post-embryonic roots, with attention to quiescent centre formation development in relation auxin homeostasis. To aim, morphological histochemical analyses were carried out seedlings, exposed not Cd and/or As, wild type, transgenic lines useful for monitoring identity, localization cellular influx efflux. Moreover, levels expression YUC6 biosynthetic gene monitored As type seedlings....
The heterologous expression of AtPCS1 in tobacco plants exposed to arsenic plus cadmium enhances phytochelatin levels, root As/Cd accumulation and pollutants detoxification, but does not prevent cyto-histological damages. High (PC) levels may be involved detoxification both (Cd) (As) numerous plants. Although polluted environments are frequently characterized by As Cd coexistence, how increased PC affect the adaptation entire plant response its cells/tissues a combined contamination needs...
Adventitious roots (ARs) are post-embryonic essential for plant survival and propagation. Indole-3-acetic acid (IAA) is the auxin that controls AR formation; however, its precursor indole-3-butyric (IBA) known to enhance it. Ethylene affects many auxin-dependent processes by affecting IAA synthesis, transport and/or signaling, but role in formation has not been elucidated. This research investigated of ethylene dark-grown Arabidopsis thaliana seedlings, interaction with IAA/IBA. A number...
Indole-3-acetic acid (IAA), and its precursor indole-3-butyric (IBA), control adventitious root (AR) formation in planta. Adventitious roots are also crucial for propagation via cuttings. However, IBA role(s) is/are still far to be elucidated. In Arabidopsis thaliana stem cuttings, 10 μM is more AR-inductive than IAA, and, thin cell layers (TCLs), induces ARs when combined with 0.1 kinetin (Kin). It unknown whether arabidopsis TCLs produce under alone (10 μM) or IAA μM), they contain...
Adventitious roots (ARs) are essential for vegetative propagation. The Arabidopsis thaliana transcription factors SHORT ROOT (SHR) and SCARECROW (SCR) affect primary/lateral root development, but their involvement in AR formation is uncertain. LAX3 AUX1 auxin influx carriers contribute to development. expression regulated by SHR, contributes tip maximum. In contrast, development unknown. Xylogenesis induced plus cytokinin as formation, the genes involved largely Stem thin cell layers (TCLs)...
L. is a worldwide food-crop frequently growing in cadmium (Cd)/arsenic (As) polluted soils, with its root-system as the first target of pollutants. Root-system development involves establishment optimal indole-3-acetic acid (IAA) levels, also requiring conversion IAA natural precursor indole-3-butyric (IBA) into IAA, causing nitric oxide (NO) formation. Nitric stress-signaling molecule. In rice, negative interaction Cd or As endogenous auxin has been demonstrated, some NO protective effects....
Nitric oxide (NO) has signalling roles in plant stress responses. Cadmium (Cd) and arsenic (As) soil pollutants alter development, mainly the root-system, by increasing NO-content, triggering reactive oxygen species (ROS), forming peroxynitrite NO-reaction with superoxide anion. Interactions of NO ROS seem important for tolerance to heavy metal(oid)s, but mechanisms underlying this process remain unclear. Our goal was investigate NO-involvement rice (Oryza sativa L.) root-system after...
Adventitious roots (ARs) are often necessary for plant survival, and essential successful micropropagation. In Arabidopsis thaliana dark-grown seedlings AR-formation occurs from the hypocotyl is enhanced by application of indole-3-butyric acid (IBA) combined with kinetin (Kin). The same IBA + Kin-treatment induces in thin cell layers (TCLs). Auxin main inducer xylogenesis numerous species experimental systems. Xylogenesis competitive to hypocotyls TCLs. Jasmonates (JAs) negatively affect...
The heavy metal cadmium (Cd) affects root system development and quiescent center (QC)-definition in Arabidopsis root-apices. brassinosteroids-(BRs)-mediated tolerance to metals has been reported occur by a modulation of nitric oxide (NO) auxin-localization. However, how BRs counteract Cd-action different types is unknown. This research aimed find correlations between NO response Cd Arabidopsis's system, monitoring their effects on QC-definition auxin localization To this aim, developmental...
Brassinosteroids (BRs), an emerging class of phytohormones, affect numerous plant physiological and metabolic processes can improve defense systems to counteract metalloid phytotoxicity. Nitric oxide (NO), a reactive nitrogen species (RNS), behaves as signalling molecule activating cellular responses various environmental conditions. induce NO synthesis through nitrate reductase (NR) synthase (NOS) activities. Arsenite arsenate, inorganic forms the arsenic (As), cause both soil pollution...
The genetic basis of stem cell specification in somatic embryogenesis and organogenesis is still obscure. SOMATIC EMBRYOGENESIS RECEPTOR-LIKE KINASE (SERK) genes are involved numerous species. In vitro culture Cyclamen persicum immature ovules provides a system for investigating formation maintenance, because lines forming either organs or embryos callus without organs/embryos available the same cultivar plant growth regulator conditions. present aim was to exploit this property cyclamen...
Rice is a worldwide cultivated crop that serves as an important source of food for the human population, but it also simplest route arsenic (As) contamination chain. The As inorganic forms, arsenate [As(V)] and arsenite [As(III)], are highly toxic species found in soil most easily absorbed by roots. absorption As(V) prevails aerobic soils while As(III) favored anaerobic soils. converted to roots, although small amounts remain plant organs. root system first target action both forms....
Abstract Bromodomain and Extra Terminal domain (BET) proteins are characterized by the presence of two types domains, bromodomain extra terminal domain. They bind to acetylated lysines present on histone tails control gene transcription. also well known play an important role in cell cycle regulation. In Arabidopsis (Arabidopsis thaliana), there 12 BET genes; however, only them, IMBIBITION INDUCIBLE1 GENERAL TRANSCRIPTION FACTOR GROUP E6 (GTE6), were functionally analyzed. We GTE4 show that...
Peroxisomes are important in plant physiological functions and stress responses. Through the production of reactive oxygen nitrogen species (ROS RNS), antioxidant defense enzymes, peroxisomes control cellular redox homeostasis. Peroxin (PEX) proteins, such as PEX7 PEX5, recognize peroxisome targeting signals (PTS1/PTS2) for transporting proteins from cytosol to peroxisomal matrix. pex7-1 mutant displays reduced PTS2 protein import altered metabolism. In this research we analyzed role...
Knowledge on salt tolerance requires further investigation, particularly in plants of agro-food interest. Sorghum is a potentially useful plant because it emerging food species that combines high levels with interesting nutritional characteristics. In sorghum different genotypes respond differently to saline stress and the early events characterizing are not yet fully understood. Moreover, number resistant needs be extended. The Bianca Tonkawa two possible candidates for extending...
The role of the auxins indole-3-acetic acid (IAA) and indole-3-butyric (IBA) auxin-interacting phytohormone ethylene, on ectopic formation primary xylem (xylogenesis in planta) is still little known. In particular, auxin/ethylene-target tissue(s), modality xylary process (trans-differentiation vs. de novo formation), kind elements formed (metaxylem protoxylem) are currently unknown. It also unclear whether IBA may act independently conversion into IAA. To investigate these topics,...