Base de dados : MEDLINE Pesquisa : B01.650.940.800.575.912.250.198.500.100.232 [Categoria DeCS] Referências encontradas : 105 [refinar] Mostrando: 1 .. 10   no formato [Detalhado]

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[PMID]: 28445514 [Au] Autor: Doudová J; Douda J; Mandák B [Ad] Endereço: Department of Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, Czech Republic. [Ti] Título: The complexity underlying invasiveness precludes the identification of invasive traits: A comparative study of invasive and non-invasive heterocarpic Atriplex congeners. [So] Source: PLoS One;12(4):e0176455, 2017. [Is] ISSN: 1932-6203 [Cp] País de publicação: United States [La] Idioma: eng [Ab] Resumo: Heterocarpy enables species to effectively spread under unfavourable conditions by producing two or more types of fruit differing in ecological characteristics. Although it is frequent in annuals occupying disturbed habitats that are vulnerable to invasion, there is still a lack of congeneric studies addressing the importance of heterocarpy for species invasion success. We compared two pairs of heterocarpic Atriplex species, each of them comprising one invasive and one non-invasive non-native congener. In two common garden experiments, we (i) simulated the influence of different levels of nutrients and population density on plants grown from different types of fruits and examined several traits that are generally positively associated with invasion success, and (ii) grew plants in a replacement series experiment to evaluate resource partitioning between them and to compare their competitive ability. We found that specific functional traits or competitiveness of species cannot explain the invasiveness of Atriplex species, indicating that species invasiveness involves more complex interactions of traits that are important only in certain ecological contexts, i.e. in specific environmental conditions and only some habitats. Interestingly, species trait differences related to invasion success were found between plants growing from the ecologically most contrasting fruit types. We suggest that fruit types differing in ecological behaviour may be essential in the process of invasion or in the general spreading of heterocarpic species, as they either the maximize population growth (type C fruit) or enhance the chance of survival of new populations (type A fruit). Congeners offer the best available methodical framework for comparing traits among phylogenetically closely related invasive and non-invasive species. However, as indicated by our results, this approach is unlikely to reveal invasive traits because of the complexity underlying invasiveness. [Mh] Termos MeSH primário: Atriplex/crescimento & desenvolvimento Espécies Introduzidas [Mh] Termos MeSH secundário: Ecossistema Frutas/crescimento & desenvolvimento Frutas/fisiologia Germinação [Pt] Tipo de publicação: COMPARATIVE STUDY; JOURNAL ARTICLE [Em] Mês de entrada: 1709 [Cu] Atualização por classe: 170907 [Lr] Data última revisão: 170907 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170427 [St] Status: MEDLINE [do] DOI: 10.1371/journal.pone.0176455

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[PMID]: 28187398 [Au] Autor: Vromman D; Martínez JP; Lutts S [Ad] Endereço: Groupe de Recherche en Physiologie Végétale, Earth and Life Institute - Agronomy (ELI-A), Université Catholique de Louvain, 5 (Bte 7.07.13) Place Croix du Sud, 1348 Louvain-la-Neuve, Belgium. [Ti] Título: Phosphorus deficiency modifies As translocation in the halophyte plant species Atriplex atacamensis. [So] Source: Ecotoxicol Environ Saf;139:344-351, 2017 May. [Is] ISSN: 1090-2414 [Cp] País de publicação: Netherlands [La] Idioma: eng [Ab] Resumo: Most arsenic in surface soil and water exists primarily in its oxidized form, as arsenate (As(V); AsO ), which is an analog of phosphate (PO ). Arsenate can be taken up by phosphate transporters. Atriplex atacamensis Phil. is native to northern Chile (Atacama Desert), and this species can cope with high As concentrations and low P availability in its natural environment. To determine the impact of P on As accumulation and tolerance in A. atacamensis, the plants were cultivated in a hydroponic system under four treatments: no As(V) addition with 323µM phosphate (control); 1000µM As(V) addition with 323µM phosphate; no As(V) and no phosphate; 1000µM As(V) addition and no phosphate. Phosphate starvation decreased shoot fresh weight, while As(V) addition reduced stem and root fresh weights. Arsenate addition decreased the P concentrations in both roots and leaves, but to a lesser extent than for P starvation. Phosphorus starvation increased the As concentrations in roots, but decreased it in shoots, which suggests that P deficiency reduced As translocation from roots to shoots. Arsenate addition increased total glutathione, but P deficiency decreased oxidized and reduced glutathione in As(V)-treated plants. Arsenate also induced an increase in S accumulation and nonprotein thiol and ethylene synthesis, and a decrease in K concentrations, effects that were similar for the P-supplied and P-starved plants. In contrast, in As(V)-treated plants, P starvation dramatically decreased total soluble protein content and increased lipid peroxidation, compared to plants supplied with P. Phosphorus nutrition thus appears to be an important component of A. atacamensis response to As toxicity. [Mh] Termos MeSH primário: Arseniatos/farmacocinética Atriplex/efeitos dos fármacos Atriplex/metabolismo Fósforo/deficiência [Mh] Termos MeSH secundário: Arseniatos/metabolismo Arseniatos/farmacologia Transporte Biológico/efeitos dos fármacos Etilenos/biossíntese Glutationa/metabolismo Peroxidação de Lipídeos/efeitos dos fármacos Fósforo/metabolismo Fósforo/farmacologia Folhas de Planta/efeitos dos fármacos Folhas de Planta/metabolismo Raízes de Plantas/efeitos dos fármacos Raízes de Plantas/metabolismo Brotos de Planta/efeitos dos fármacos Brotos de Planta/crescimento & desenvolvimento Brotos de Planta/metabolismo Potássio/metabolismo Compostos de Sulfidrila/metabolismo Enxofre/metabolismo [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Arsenates); 0 (Ethylenes); 0 (Sulfhydryl Compounds); 27YLU75U4W (Phosphorus); 70FD1KFU70 (Sulfur); 91GW059KN7 (ethylene); GAN16C9B8O (Glutathione); N7CIZ75ZPN (arsenic acid); RWP5GA015D (Potassium) [Em] Mês de entrada: 1706 [Cu] Atualização por classe: 170615 [Lr] Data última revisão: 170615 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170211 [St] Status: MEDLINE

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[PMID]: 27494563 [Au] Autor: Frutos I; García-Delgado C; Cala V; Gárate A; Eymar E [Ad] Endereço: a Department of Agricultural Chemistry and Food Sciences , University Autónoma of Madrid , Madrid , Spain. [Ti] Título: The use of spent mushroom compost to enhance the ability of Atriplex halimus to phytoremediate contaminated mine soils. [So] Source: Environ Technol;38(9):1075-1084, 2017 May. [Is] ISSN: 0959-3330 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: The mushroom cultivation industry produces a huge amount of spent mushroom compost (SMC), a wide world agricultural organic waste which causes serious environmental problems. However, this cheap organic waste could be useful in the remediation of contaminated soils. The aim of this work was to assess the potential of SMC in combination with the native shrub Atriplex halimus, to phytoremediate two mine soils contaminated with Cd, Pb and Cu. Firstly, to minimize metal availability in the soil, the optimal doses of SMC were determined. Secondly, a phytoremediation assay in greenhouse conditions was carried out to test the effects of A. halimus in combination with SMC at different doses. The results showed the ability of SMC to reduce soil acidity, the mobility of the metals and the enhancement of A. halimus growth. SMC promoted metal immobilization in the root of A. halimus and decreased the translocation from the roots to the shoots. The combination of SMC amendment and A. halimus produced phytostabilization of the metals in the mine soils assayed. In conclusion, SMC represents an adequate organic solid waste which in combination with A. halimus can reduce the adverse impact caused by the high mobility of metals in acid mine soils. [Mh] Termos MeSH primário: Agaricales Atriplex/metabolismo Recuperação e Remediação Ambiental/métodos Metais Pesados/metabolismo Poluentes do Solo/metabolismo [Mh] Termos MeSH secundário: Biodegradação Ambiental Biomassa Cádmio/metabolismo Cobre/metabolismo Chumbo/metabolismo Mineração Brotos de Planta/metabolismo Solo/química Resíduos Sólidos/análise [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Metals, Heavy); 0 (Soil); 0 (Soil Pollutants); 0 (Solid Waste); 00BH33GNGH (Cadmium); 2P299V784P (Lead); 789U1901C5 (Copper) [Em] Mês de entrada: 1705 [Cu] Atualização por classe: 171116 [Lr] Data última revisão: 171116 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 160806 [St] Status: MEDLINE [do] DOI: 10.1080/09593330.2016.1217938

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[PMID]: 27450478 [Au] Autor: Martirosyan V; Unc A; Miller G; Doniger T; Wachtel C; Steinberger Y [Ad] Endereço: The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, 5290002, Israel. [Ti] Título: Desert Perennial Shrubs Shape the Microbial-Community Miscellany in Laimosphere and Phyllosphere Space. [So] Source: Microb Ecol;72(3):659-68, 2016 Oct. [Is] ISSN: 1432-184X [Cp] País de publicação: United States [La] Idioma: eng [Ab] Resumo: Microbial function, composition, and distribution play a fundamental role in ecosystem ecology. The interaction between desert plants and their associated microbes is expected to greatly affect their response to changes in this harsh environment. Using comparative analyses, we studied the impact of three desert shrubs, Atriplex halimus (A), Artemisia herba-alba (AHA), and Hammada scoparia (HS), on soil- and leaf-associated microbial communities. DNA extracted from the leaf surface and soil samples collected beneath the shrubs were used to study associated microbial diversity using a sequencing survey of variable regions of bacterial 16S rRNA and fungal ribosomal internal transcribed spacer (ITS1). We found that the composition of bacterial and fungal orders is plant-type-specific, indicating that each plant type provides a suitable and unique microenvironment. The different adaptive ecophysiological properties of the three plant species and the differential effect on their associated microbial composition point to the role of adaptation in the shaping of microbial diversity. Overall, our findings suggest a link between plant ecophysiological adaptation as a "temporary host" and the biotic-community parameters in extreme xeric environments. [Mh] Termos MeSH primário: Biodiversidade Biota Clima Desértico Consórcios Microbianos Plantas/microbiologia Microbiologia do Solo [Mh] Termos MeSH secundário: Adaptação Biológica Amaranthaceae/microbiologia Artemisia/microbiologia Atriplex/microbiologia Bactérias/classificação Bactérias/genética Bactérias/isolamento & purificação Sequência de Bases DNA Bacteriano DNA Fúngico Ecologia Ecossistema Fungos/classificação Fungos/genética Fungos/isolamento & purificação Israel Folhas de Planta/microbiologia Raízes de Plantas/microbiologia Plantas/classificação RNA Ribossômico 16S/genética Solo/química Especificidade da Espécie Células-Tronco [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (DNA, Bacterial); 0 (DNA, Fungal); 0 (RNA, Ribosomal, 16S); 0 (Soil) [Em] Mês de entrada: 1708 [Cu] Atualização por classe: 171116 [Lr] Data última revisão: 171116 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 160725 [St] Status: MEDLINE [do] DOI: 10.1007/s00248-016-0822-9

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[PMID]: 27181948 [Au] Autor: Li J; Yu G; Sun X; Zhang X; Liu J; Pan H [Ad] Endereço: College of Plant Science, Jilin University, Changchun, 130062 Jilin, China. Electronic address: lijingtao789@126.com. [Ti] Título: AcEBP1, an ErbB3-Binding Protein (EBP1) from halophyte Atriplex canescens, negatively regulates cell growth and stress responses in Arabidopsis. [So] Source: Plant Sci;248:64-74, 2016 Jul. [Is] ISSN: 1873-2259 [Cp] País de publicação: Ireland [La] Idioma: eng [Ab] Resumo: An ErbB-3-binding protein gene AcEBP1, also known as proliferation-associated 2G4 gene (PA2G4s) belonging to the M24 superfamily, was obtained from the saltbush Atriplex canescens. Subcellular localization imaging showed the fusion protein AcEBP1-eGFP was located in the nucleus of epidermal cells in Nicotiana benthamiana. The AcEBP1 gene expression levels were up-regulated under salt, osmotic stress, and hormones treatment as revealed by qRT-PCR. Overexpression of AcEBP1 in Arabidopsis demonstrated that AcEBP1 was involved in root cell growth and stress responses (NaCl, osmotic stress, ABA, low temperature, and drought). These phenotypic data were correlated with the expression patterns of stress responsive genes and PR genes. The AcEBP1 transgenic Arabidopsis plants also displayed increased sensitivity under low temperature and evaluated resistance to drought stress. Together, these results demonstrate that AcEBP1 negatively affects cell growth and is a regulator under stress conditions. [Mh] Termos MeSH primário: Arabidopsis/fisiologia Atriplex/fisiologia Proteínas de Plantas/fisiologia Receptor ErbB-3/fisiologia Plantas Tolerantes a Sal/fisiologia Estresse Fisiológico/fisiologia [Mh] Termos MeSH secundário: Arabidopsis/metabolismo Atriplex/metabolismo Clonagem Molecular Indóis Pressão Osmótica/fisiologia Proteínas de Plantas/genética Proteínas de Plantas/metabolismo Raízes de Plantas/crescimento & desenvolvimento Plantas Geneticamente Modificadas/metabolismo Plantas Geneticamente Modificadas/fisiologia Reação em Cadeia da Polimerase em Tempo Real Receptor ErbB-3/genética Receptor ErbB-3/metabolismo Plantas Tolerantes a Sal/metabolismo Análise de Sequência [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Indoles); 0 (Plant Proteins); 65381-15-9 (phyriaviolin); EC 2.7.10.1 (Receptor, ErbB-3) [Em] Mês de entrada: 1702 [Cu] Atualização por classe: 170227 [Lr] Data última revisão: 170227 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 160517 [St] Status: MEDLINE

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[PMID]: 27135816 [Au] Autor: Mesnoua M; Mateos-Naranjo E; Barcia-Piedras JM; Pérez-Romero JA; Lotmani B; Redondo-Gómez S [Ad] Endereço: Scientific and Technical Research Centre for Arid Areas (CRSTRA), BP 1682 R.P., 07000, Biskra, Algeria; Laboratory of Plant Protection, University of Abdelhamid Ben Badis of Mostaganem, Algeria. [Ti] Título: Physiological and biochemical mechanisms preventing Cd-toxicity in the hyperaccumulator Atriplex halimus L. [So] Source: Plant Physiol Biochem;106:30-8, 2016 Sep. [Is] ISSN: 1873-2690 [Cp] País de publicação: France [La] Idioma: eng [Ab] Resumo: The xero-halophyte Atriplex halimus L., recently described as Cd-hyperaccumulator, was examined to determine Cd toxicity threshold and the physiological mechanisms involved in Cd tolerance. An experiment was conducted to investigate the effect of cadmium from 0 to 1350 µM on chlorophyll fluorescence parameters, gas exchange, photosynthetic pigment concentrations and antioxidative enzyme activities of A. halimus. Cadmium, calcium, iron, manganese, magnesium, potassium, phosphorous, sodium and zinc concentrations were also analyzed. Plants of A. halimus were not able to survive at 1350 µM Cd and the upper tolerance limit was recorded at 650 µM Cd; although chlorosis was observed from 200 µM Cd. Cadmium accumulation increased with increase in Cd supply, reaching maxima of 0.77 and 4.65 mg g(-1) dry weight in shoots and roots, respectively, at 650 µM Cd. Dry mass, shoot length, specific leaf area, relative growth rate, net photosynthetic rate, stomatal conductance, pigments contents and chlorophyll fluorescence were significantly reduced by increasing Cd concentration. However, the activities of superoxide dismutase (SOD; EC1.15.1.1), catalase (CAT; EC1.11.1.6) and guaiacol peroxidase (GPx; EC1.11.1.7) were significantly induced by Cd. Exposures to Cd caused also a significant decrease in P contents in roots, Mg and Mn contents in shoots and Fe and K contents in roots and shoots and had no effect on Ca, Na and Zn contents. The tolerance of A. halimus to Cd stress might be related with its capacity to avoid the translocation of great amounts of Cd in its aboveground tissues and higher activities of enzymatic antioxidants in the leaf. [Mh] Termos MeSH primário: Atriplex/fisiologia Cádmio/toxicidade [Mh] Termos MeSH secundário: Antioxidantes/metabolismo Atriplex/efeitos dos fármacos Atriplex/enzimologia Atriplex/crescimento & desenvolvimento Biomassa Clorofila/metabolismo Fluorescência Gases/metabolismo Luz Fotossíntese/efeitos dos fármacos Fotossíntese/efeitos da radiação Complexo de Proteína do Fotossistema II/metabolismo [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Antioxidants); 0 (Gases); 0 (Photosystem II Protein Complex); 00BH33GNGH (Cadmium); 1406-65-1 (Chlorophyll) [Em] Mês de entrada: 1703 [Cu] Atualização por classe: 170327 [Lr] Data última revisão: 170327 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 160503 [St] Status: MEDLINE

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[PMID]: 27010414 [Au] Autor: Bendaly A; Messedi D; Smaoui A; Ksouri R; Bouchereau A; Abdelly C [Ad] Endereço: Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie de Borj-Cédria, BP 901, 2050 Hammam-lif, Tunisia. Electronic address: aliabendaly@yahoo.fr. [Ti] Título: Physiological and leaf metabolome changes in the xerohalophyte species Atriplex halimus induced by salinity. [So] Source: Plant Physiol Biochem;103:208-18, 2016 Jun. [Is] ISSN: 1873-2690 [Cp] País de publicação: France [La] Idioma: eng [Ab] Resumo: Atriplex halimus is a xerohalophyte plant, which could be used as cash crops. This plant was integrated in Tunisian government programs the aim of which is to rehabilitate saline areas and desert. To investigate its strategies involved in salt tolerance, A. halimus was grown hydroponically under controlled conditions with increasing salinity. Plants were harvested and analyzed after 60 days of treatment. The biomass of A. halimus increased by moderate salinity and decreased significantly at high salinity compared to control plants at 400 mM. Despite of the large amounts of Na(+) observed in the leaves of Atriplex plants, leaf water contents and leaf succulence kept on increasing in treated plants and decreased over 150 mM NaCl. This confirmed the compartmentation and the efficient contribution of Na(+) in the osmotic adjustment. Analysis of the metabolic profiles showed an accumulation of carbohydrates and amino acids. The leaf tissues preferentially stored proline, α alanine and sucrose. Increasing NaCl levels were also accompanied by a significant accumulation of malate in leaves. Involvement of these solutes in osmotic adjustment was considered low. Nevertheless, they seemed to have an important role in controlling photosynthesis which capacity was enhanced by low salinity and decreased with increasing salinity (evaluated by actual photochemical efficiency of photosystem II and chlorophyll contents). The unchanged maximum photochemical efficiency of photosystem II accompanied by the increase of the non-photochemical quenching, the enhancement of the total antioxidant activity and the decrease of the malondialdehyde contents in leaves showed efficient protection of membranes and photosystem II from photo-oxidative damage. This protection seemed to be attributed to proline and sucrose largely accumulated in leaves treated with salt. [Mh] Termos MeSH primário: Antioxidantes/metabolismo Atriplex/efeitos dos fármacos Metaboloma/efeitos dos fármacos Fotossíntese/efeitos dos fármacos Cloreto de Sódio/farmacologia [Mh] Termos MeSH secundário: Atriplex/fisiologia Biomassa Malondialdeído/metabolismo Osmose/efeitos dos fármacos Complexo de Proteína do Fotossistema II/metabolismo Folhas de Planta/efeitos dos fármacos Folhas de Planta/fisiologia Prolina/metabolismo Salinidade Plantas Tolerantes a Sal Água/metabolismo [Pt] Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T [Nm] Nome de substância: 0 (Antioxidants); 0 (Photosystem II Protein Complex); 059QF0KO0R (Water); 451W47IQ8X (Sodium Chloride); 4Y8F71G49Q (Malondialdehyde); 9DLQ4CIU6V (Proline) [Em] Mês de entrada: 1612 [Cu] Atualização por classe: 161230 [Lr] Data última revisão: 161230 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 160325 [St] Status: MEDLINE

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[PMID]: 27000320 [Au] Autor: Fernández YT; Diaz O; Acuña E; Casanova M; Salazar O; Masaguer A [Ad] Endereço: Departamento de Ingeniería y Suelos, Universidad de Chile, Santa Rosa 11315, 8820808, Santiago, Chile. yasnatapiafernandez@gmail.com. [Ti] Título: Phytostabilization of arsenic in soils with plants of the genus Atriplex established in situ in the Atacama Desert. [So] Source: Environ Monit Assess;188(4):235, 2016 Apr. [Is] ISSN: 1573-2959 [Cp] País de publicação: Netherlands [La] Idioma: eng [Ab] Resumo: In the ChiuChiu village (Atacama Desert, Chile), there is a high concentration of arsenic (As) in the soil due to natural causes related to the presence of volcanoes and geothermal activity. To compare the levels of As and the growth parameters among plants of the same genus, three species of plants were established in situ: Atriplex atacamensis (native of Chile), Atriplex halimus, and Atriplex nummularia. These soils have an As concentration of 131.2 ± 10.4 mg kg(-1), a pH of 8.6 ± 0.1, and an electrical conductivity of 7.06 ± 2.37 dS m(-1). Cuttings of Atriplex were transplanted and maintained for 5 months with periodic irrigation and without the addition of fertilizers. The sequential extraction of As indicated that the metalloid in these soils has a high bioavailability (38 %), which is attributed to the alkaline pH, low organic matter and Fe oxide content, and sandy texture. At day 90 of the assay, the As concentrations in the leaves of A. halimus (4.53 ± 1.14 mg kg(-1)) and A. nummularia (3.85 ± 0.64 mg kg(-1)) were significantly higher than that in A. atacamensis (2.46 ± 1.82 mg kg(-1)). However, the three species accumulated higher levels of As in their roots, indicating a phytostabilization capacity. At the end of the assay, A. halimus and A. nummularia generated 30 % more biomass than A. atacamensis without significant differences in the As levels in the leaves. Despite the difficult conditions in these soils, the establishment of plants of the genus Atriplex is a recommended strategy to generate a vegetative cover that prevents the metalloid from spreading in this arid area through the soil or by wind. [Mh] Termos MeSH primário: Arsênico/análise Atriplex/fisiologia Biodegradação Ambiental Clima Desértico Poluentes do Solo/análise Solo/química [Mh] Termos MeSH secundário: Biomassa Chile Meio Ambiente Monitoramento Ambiental Fertilizantes Folhas de Planta/química Raízes de Plantas/química [Pt] Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T [Nm] Nome de substância: 0 (Fertilizers); 0 (Soil); 0 (Soil Pollutants); N712M78A8G (Arsenic) [Em] Mês de entrada: 1608 [Cu] Atualização por classe: 171116 [Lr] Data última revisão: 171116 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 160323 [St] Status: MEDLINE [do] DOI: 10.1007/s10661-016-5247-x

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[PMID]: 26884237 [Au] Autor: Eissa MA [Ad] Endereço: Department of Soils and Water, Faculty of Agriculture, Assiut University, Assiut, 71526, Egypt. mamdouhessa@gmail.com. [Ti] Título: Effect of sugarcane vinasse and EDTA on cadmium phytoextraction by two saltbush plants. [So] Source: Environ Sci Pollut Res Int;23(10):10247-54, 2016 May. [Is] ISSN: 1614-7499 [Cp] País de publicação: Germany [La] Idioma: eng [Ab] Resumo: Although the use of saltbush plants in metal phytoremediation is well known, there is little information about the impact of sugarcane vinasse (SCV) and EDTA on metal uptake. Heavily cadmium-polluted soil (38 mg kg(-1) Cd) was used in pot and incubation experiments to investigate the Cd phytoextraction potential of wavy saltbush (Atriplex undulata) and quail saltbush (Atriplex lentiformis). EDTA at rates of 3, 6, and 10 mM kg(-1) soil and SCV at rates of 7, 15, and 30 mL kg(-1) soil were added to the polluted soil. The application of EDTA significantly (P = 0.002) reduced the growth of saltbush plants; on the other hand, SCV improved the growth. Both EDTA and SCV increased the availability and root-to-shoot transfer of Cd. The plants of A. lentiformis grown on the soil amended with the highest rate of SCV were able to remove 20.4 % of the total soil Cd during a period of 9 months. Based on the obtained results, it may be concluded that A. lentiformis and sugarcane vinasse could be more effective in the phytoextraction of Cd from the polluted soils. [Mh] Termos MeSH primário: Atriplex/metabolismo Biodegradação Ambiental Cádmio/metabolismo Ácido Edético/química Saccharum Poluentes do Solo/metabolismo [Mh] Termos MeSH secundário: Cádmio/química Raízes de Plantas/metabolismo [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Soil Pollutants); 00BH33GNGH (Cadmium); 9G34HU7RV0 (Edetic Acid) [Em] Mês de entrada: 1703 [Cu] Atualização por classe: 171103 [Lr] Data última revisão: 171103 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 160218 [St] Status: MEDLINE [do] DOI: 10.1007/s11356-016-6261-9

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[PMID]: 26353974 [Au] Autor: Dessena L; Mulas M [Ad] Endereço: Department of Nature and Land Sciences of the University of Sassari, Via E. De Nicola 9, 07100, Sassari, Italy. [Ti] Título: Influence of temperature on biomass production of clones of Atriplex halimus. [So] Source: Int J Biometeorol;60(5):677-86, 2016 May. [Is] ISSN: 1432-1254 [Cp] País de publicação: United States [La] Idioma: eng [Ab] Resumo: A very effective tool to combat desertification is revegetation. Promising species for this purpose are the evergreen shrubs of the genus Atriplex. The objective of the research was to study the growing responses of Atriplex halimus under different thermal regimes and to evaluate the biomass accumulation of selected clones. The test was carried out in four sites of Sardinia Island (Italy) characterized by different latitude, altitude and air temperature trends along the year. In every site, potted plants of five clones of A. halimus were compared for biomass production as measured by linear growth of plants (central axis and secondary shoots), as well as by dry weight of leaves, shoots and roots per plant. Correlations between sums of hour-degrees under or above the thresholds of critical air temperatures, comprised between 0 and 35 °C, and the plant growth indicators were analysed. Differences among the five clones, with regard to the influence of low temperatures on plant growth and on the biomass production were evaluated. Among five tested clones, GIO1 and SAN3 resulted more sensitive to low temperatures. Clones MAR1, PAL1 and FAN3 resulted less sensitive to low temperatures and in the site characterized by the lowest minimum temperatures also have shown greater adaptability and thus biomass growth in the observed period. The clone PAL1 showed a lower shoot/root biomass ratio as adaptation to cold temperature, and the clone FAN3, the opposite behaviour and a general preference to temperate thermal regimes. [Mh] Termos MeSH primário: Atriplex/crescimento & desenvolvimento Atriplex/genética [Mh] Termos MeSH secundário: Biomassa Genótipo Itália Folhas de Planta/crescimento & desenvolvimento Raízes de Plantas/crescimento & desenvolvimento Brotos de Planta/crescimento & desenvolvimento Temperatura Ambiente [Pt] Tipo de publicação: JOURNAL ARTICLE [Em] Mês de entrada: 1701 [Cu] Atualização por classe: 171010 [Lr] Data última revisão: 171010 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 150911 [St] Status: MEDLINE [do] DOI: 10.1007/s00484-015-1062-2

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