المؤلفون: M. Grilli Caiola, Cinzia Forni

المصدر: Giornale botanico italiano. 127:422-427

مصطلحات موضوعية: biology, Anabaena, fungi, food and beverages, Nitrogenase, Plant Science, biochemical phenomena, metabolism, and nutrition, biology.organism_classification, Azolla, Nutrient, Mucilage, Arthrobacter, Botany, bacteria, Fern, Ecology, Evolution, Behavior and Systematics, Bacteria

الوصف: Bacterial population is found together with the cyanobacterium Anabaena azollae in the leaf cavities and the sporocarps of Azolla. Different Arthrobacter species have been invariably isolated from the leaf cavities and sporocarps of several fern species. About the role of the bacteria in the association, it is probable that the bacteria affect the carbon and nitrogen metabolism of the cavity by competing with the Anabaena for the nutrients and in the meantime it is likely that their high respiratory activity favours the establishment of a microaerobic environment and consequently the nitrogenase activity. Furthermore Arthrobacter may contribute to the production of the mucilage present in the algal packets by excreting extracellular polysaccharides, which components can be involved in lectin binding with Azolla and Anabaena. Finally the IAA formation by Arthrobacter may influence the hormonal balance during the establishment of the association.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::daf49eee27e63d631f91670e56ed0164Test
https://doi.org/10.1080/11263509309431025Test

المؤلفون: Cinzia Forni, J. Riov, Elisha Tel-Or, M. Grilli Caiola

المصدر: Scopus-Elsevier

مصطلحات موضوعية: Indoleacetic Acids, biology, Azolla pinnata, Tryptophan, food and beverages, Plants, biology.organism_classification, Azolla, Microbiology, Gas Chromatography-Mass Spectrometry, Azolla filiculoides, chemistry.chemical_compound, chemistry, Arthrobacter, Botany, heterocyclic compounds, Fern, Indole-3-acetic acid, Bacteria

الوصف: SUMMARY: Arthrobacter species, isolated from the leaf cavities and the microsporocarps of the aquatic fern species Azolla pinnata and Azolla filiculoides, produced indole-3-acetic acid (IAA) in culture when the precursor tryptophan was added to the medium. No IAA production was detected in the absence of tryptophan. Maximum IAA formation was obtained in the first 2 d of incubation. Part of the tryptophan was transformed to Nα-acetyl-L-tryptophan.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4797aee7e00d17b4b3c2dea7f671807Test
https://doi.org/10.1099/00221287-138-2-377Test

المؤلفون: Luigi Campanella, Manuela Pintore, Cinzia Forni, F. Giordani

مصطلحات موضوعية: Lemna, Lemna minor, growth, Sodium, Settore BIO/01, chemistry.chemical_element, Plant Science, Biology, azolla, chlorophyll, lemna, sds, biology.organism_classification, Azolla, Macrophyte, Azolla filiculoides, chemistry.chemical_compound, chemistry, Chlorophyll, phtyroremediation, Botany, Fern, SDS, Ecology, Evolution, Behavior and Systematics

الوصف: In this work, we determined the tolerance to sodium dodecyl sulphate (SDS) of Azolla filiculoides and of Lemna minor. The presence of the detergent in the media affected growth more than the chlorophyll content. On the basis of the effect indices, Lemna is more tolerant to SDS than Azolla. The fern had a better capacity, compared with duckweed, to remove and accumulate the pollutant.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b7fe2f414d48fac2d38ffeab9e8c003Test
http://hdl.handle.net/2108/15615Test

المؤلفون: Cinzia Forni, Antonella Cascone, Maurizio Fiori, Luciana Migliore

مصطلحات موضوعية: sulfadimethoxine, fern, experimental model, Environmental protection, nitrogen, Toxicology, Degradation, pollution control, Anti-Infective Agents, Antibiotics, environmental sanitation, Biomass, biological treatment, Waste Management and Disposal, Filicophyta, Water Science and Technology, water pollution, aquatic fauna, biology, Ecological Modeling, article, food and beverages, Environmental monitoring, Azolla, Pollution, Biodegradation, Environmental, priority journal, nitrogen fixation, Bioaccumulation, laboratory test, tillage, Biodegradation, growth rate, Settore BIO/03 - Botanica Ambientale e Applicata, Environmental Engineering, culture medium, Monitoring, Environmental remediation, Settore BIO/01, Adsorption, Bioremediation, Water pollution, remediation, wastewater, agricultural worker, azolla filiculoides, biomass, bioremediation, degradation, dry weight, nonhuman, Environmental Monitoring, Ferns, Sulfadimethoxine, Water Purification, Azolla filiculoides, Environmental, Dry weight, Aquatic plant, Botany, Civil and Structural Engineering, biology.organism_classification, Phytoremediation

الوصف: Plants can be an interesting tool for in situ remediation of drug contaminated waters. In a laboratory model Azolla filiculoides Lam., an aquatic fern known to absorb pollutants. has been exposed to an environmental persistent antibiotic commonly used in intensive farming. sulphadimethoxine (S), to test its bioremediation capability. In a 5 week experiment. plants were cultivated outdoor at four drug concentrations (50, 150. 300 and 450 mg 1(-1)) in N-free mineral medium. Drug affects growth rate (as biomass yield per week), N-2-fixation, heterocyst frequency, but plants are able to survive. Notwithstanding. at all concentrations tested drug was actively removed from the medium and the accumulation in the biomass is in order of magnitude up to mg g(-1) plant dry weight (1000 ppm). Drug uptake and degradation rates increase with S concentrations in the culture medium. The efficacy of the model was very high, These results demonstrated that Azolla can be taken into consideration as a tool for sulphonamides environmental monitoring and decontamination. (C) 2002 Elsevier Science Ltd. All rights reserved.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b9ac502acf805a4b3fde7eba4dacd30Test
http://hdl.handle.net/2108/52145Test

المؤلفون: M. Grilli Caiola, Jing Chen, Cinzia Forni, Lorenzo Tancioni

المصدر: Water research. 35(6)

مصطلحات موضوعية: Environmental Engineering, Settore BIO/07, Nitrogen, Settore BIO/01, Sewage, chemistry.chemical_element, Plant Development, Wastewater treatment, Biology, Water Purification, chemistry.chemical_compound, Animal science, Nitrate, Aquatic plant, Botany, Nitrogenase, Azolla, Nitrogenous compounds, Waste Management and Disposal, Water Science and Technology, Civil and Structural Engineering, business.industry, Ecological Modeling, Phosphorus, Plants, biology.organism_classification, Pollution, Azolla filiculoides, Oxygen, chemistry, Wastewater, Peroxidases, Fern, business, Water Pollutants, Chemical, Settore BIO/03 - Botanica Ambientale e Applicata

الوصف: Water fern (Azolla filiculoides Lam.) has been assessed for nitrogen and phosphorus removal in outdoor experiments comparing sewage water (S) from an experimental aquaculture plant, well water (W) and mineral growth medium Hoagland (H). The experiments were undertaken during the spring and the summer. The yield of fern biomass and nitrogenase activity was higher in H than in W and S waters. The enzyme activity had a decreasing trend with significant differences (p

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed31220ef615e2342ef91160fceac8bdTest
https://pubmed.ncbi.nlm.nih.gov/11317907Test

المؤلفون: M. Grilli Caiola, Cinzia Forni

المصدر: Enigmatic Microorganisms and Life in Extreme Environments ISBN: 9781402018633

مصطلحات موضوعية: Ecology, Settore BIO/01, Coryneform bacterium, Biology, Azolla, biology.organism_classification, Anabaena, symbiosis, Azolla, Anabaena, bacteria, symbiosis, Water composition, Light intensity, MoFe Protein, Symbiosis, Botany, Fern, bacteria

الوصف: Life of cyanobionts and bacteriobionts inside the leaf cavities of Azolla cannot be so easy. Fern shows many features of remedation plant, able to adapt itself to the change of the environmental conditions such as high light intensity, high temperature or water composition. Cyanobionts seem to modify their metabolism according to that of the fern, and whenever the host life conditions become stressing, the symbiont can be eliminated (Hill, 1975; Kitoh et al., 1991). Therefore speaking in term of symbiosis, it may be not so easy for the symbionts, since Azolla behaves at its convenience, forcing them to follow its benefit. Anyway, some authors consider the Azolla-Anabaena relationship like an happy marriage between lucky partners, where each of them contributes to the menage. Some considerations can be made on the different aspects of such unusual association.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7dd74b67d86c4bee73c9ec37a48459daTest
http://hdl.handle.net/2108/68311Test

المؤلفون: E. Bar, Cinzia Forni, M. Grilli Caiola, Elisha Tel-Or

المصدر: Nitrogen Fixation ISBN: 9789401055413

مصطلحات موضوعية: Anabaena, fungi, food and beverages, Plant physiology, biochemical phenomena, metabolism, and nutrition, Biology, biology.organism_classification, Azolla, Microbiology, Heterocyst differentiation, Arthrobacter, Botany, medicine, bacteria, Fern, Novobiocin, Bacteria, medicine.drug

الوصف: The leaf cavities and the sporocarps of the water fern Azolla contain bacteria belonging to the genus Arthrobacter Conn and Dimmick. The number of these bacteria can be decreased by treating the plants with novobiocin and erythromycin. The latter antibiotic kills the Anabaena, so Anabaena free plants can be obtained. In these plants the bacteria disappear almost completely. The novobiocin does not affect the heterocyst differentiation, but it decreases the N2-fixation activity by affecting the synthesis of the dinitrogenase reduciase.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::ea8e2ed6eb7d9699ccab04a9d6b59ed7Test
https://doi.org/10.1007/978-94-011-3486-6_95Test

المؤلفون: M. Grilli Caiola, S Gentili, Cinzia Forni

المصدر: Nitrogen Fixation with Non-Legumes ISBN: 9789401068888

مصطلحات موضوعية: biology, Mucilage, Symbiosis, Chemistry, Anabaena, Botany, Nitrogen fixation, Fern, biology.organism_classification, Azolla, Endophyte, Bacteria

الوصف: The leaf cavities of the fern Azolla contain the N2-fixing cyanobacterium Anabaena Azollae Strasb. and bacteria. These bacteria have been isolated from five Azolla species, grown in the Botanic Garden of Naples, Italy; they were aerobic, Gram-positive and with a rod-coccus life cycle. Moreover they neither fixed nitrogen nor produced gas, H2S or indole, and they were catalase positive. Nutritionally non-exacting strains grew on mineral salts medium with an ammonium salt and a carbon source. Most of the isolates produced mucilage. The bacteria were identified as Arthrobacter globiformis Conn and Dimmick, A. nicotianae Giovannozzi-Sermanni, A. aurescens Phillips and A. cristallopoietes Ensign and Rittenberg or A. pascens Lochhead and Burton. Among the species isolated A. globiformis is the most common. It is likely that the mucilage produced by A. globiformis and A. aurescens fulfils the function of retaining bacteria and Anabaena in the leaf cavities; moreover the bacteria, alone or together with the endophyte, may contribute to the formation of the envelope, which contains bacteria and algal cells.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::d18ec6d2828a65fbb6ba78337a6af4b3Test
https://doi.org/10.1007/978-94-009-0889-5_10Test