A5035183468- Plant Molecular Biology Research
- Plant tissue culture and regeneration
- Plant Stress Responses and Tolerance
- Plant Reproductive Biology
- Plant nutrient uptake and metabolism
- Arsenic contamination and mitigation
- Aluminum toxicity and tolerance in plants and animals
- Plant Parasitism and Resistance
- Plant and animal studies
- Photosynthetic Processes and Mechanisms
- Forest Management and Policy
- Ecology and Vegetation Dynamics Studies
- Remote Sensing and LiDAR Applications
- Heavy metals in environment
- Polyamine Metabolism and Applications
- Plant biochemistry and biosynthesis
- Animal Ecology and Behavior Studies
- Plant Physiology and Cultivation Studies
- Forest Ecology and Biodiversity Studies
- Polysaccharides and Plant Cell Walls
- Forest ecology and management
- Botany and Plant Ecology Studies
- Lichen and fungal ecology
- Light effects on plants
- Mycotoxins in Agriculture and Food
Sapienza University of Rome
2015-2024
University of Bologna
2015
University of Siena
2008-2015
University of Chieti-Pescara
1998
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....
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...
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...
Lunularia cruciata occupies a very basal position in the phylogenetic tree of liverworts, which turn have been recognized as early clade land plants. It would therefore seem appropriate to take L. startingpoint for investigating character evolution plants' metal(loid) response. One strongest evolutionary pressures colonization by plants has come from potential access much greater amounts nutritive ions surface rocks, compared water. This might resulted need precisely regulate trace element...
Dioecism characterizes many crop species of economic value, including kiwifruit (Actinidia deliciosa). Kiwifruit male sterility occurs at the microspore stage. The cell walls microspores and pollen male-sterile male-fertile flowers, respectively, differ in glucose galactose levels. In numerous plants, formation involves normal functioning degeneration timing tapetum, with calcium carbohydrates provided by tapetum essential for fertility. aim this study was to determine whether anther wall...
Abstract Arabidopsis abcb1 abcb19 double mutants defective in the auxin transporters ABCB1/PGP1 and ABCB19/PGP19 are altered stamen elongation, anther dehiscence pollen maturation. To assess contribution of these to development we performed phenotypic, histological analyses, situ hybridizations on single mutant flowers. We found that maturation precocious but not mutant. Accordingly, endothecium lignification is only anthers. Both stamens also show early development, with asynchronous...
Soil pollutants may affect root growth through interactions among phytohormones like auxin and jasmonates. Rice is frequently grown in paddy fields contaminated by cadmium arsenic, but the effects of these on jasmonates/auxin crosstalk during adventitious lateral roots formation are widely unknown. Therefore, seedlings Oryza sativa cv. Nihonmasari jasmonate-biosynthetic mutant coleoptile photomorphogenesis2 were exposed to and/or jasmonic acid methyl ester, then analysed morphological,...
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...