أعرض في EDS

Mercury bioaccumulation in the aquatic plant Elodea nuttallii in the field and in microcosm: Accumulation in shoots from the water might involve copper transporters

التفاصيل البيبلوغرافية
العنوان:	Mercury bioaccumulation in the aquatic plant Elodea nuttallii in the field and in microcosm: Accumulation in shoots from the water might involve copper transporters
المؤلفون:	Regier, N., Larras, F., Bravo, Andrea Garcia, Ungureanu, V. -G, Amouroux, D., Cosio, C.
المصدر:	Chemosphere. 90(2):595-602
مصطلحات موضوعية:	Cu, Fate, Hg, Sediments, Submerged macrophyte, Aquatic environments, Aquatic plants, Biomagnification, Cell sap, Cellular levels, Demethylation, Elodea nuttallii, Food webs, Hg concentrations, High organic, Macrophytes, Mercury bioaccumulation, Remobilization, Romania, Uptake mechanism, Water columns, Alkylation, Bioaccumulation, Copper, Mercury (metal), Plants (botany), Reservoirs (water), Sedimentology, Biochemistry, mercury, biological uptake, biotransformation, ecotoxicology, environmental fate, fieldwork, food web, macrophyte, mercury (element), microcosm, pollution tolerance, reservoir, sediment pollution, shoot, submerged vegetation, aquatic species, article, cellular distribution, metabolism, nonhuman, plant, plant root, transport kinetics
الوصف:	Previous studies suggest that macrophytes might participate in bioaccumulation and biomagnification of toxic mercury (Hg) in aquatic environment. Hg bioaccumulation and uptake mechanisms in macrophytes need therefore to be studied. Amongst several macrophytes collected in an Hg contaminated reservoir in Romania, Elodea nuttallii showed a high organic and inorganic Hg accumulation and was then further studied in the laboratory.Tolerance and accumulation of Hg of this plant was also high in the microcosm. Basipetal transport of inorganic Hg was predominant, whereas acropetal transport of methyl-Hg was observed with apparently negligible methylation or demethylation in planta. Hg concentrations were higher in roots>leaves>stems and in top>middle>bottom of shoots. In shoots, more than 60% Hg was found intracellularly where it is believed to be highly available to predators. Accumulation in shoots was highly reduced by cold, death and by competition with Cu+.Hg in E. nuttallii shoots seems to mainly originate from the water column, but methyl-Hg could also be remobilized from the sediments and might drive in part its entry in the food web. At the cellular level, uptake of Hg into the cell sap of shoots seems linked to the metabolism and to copper transporters. The present work highlights an important breakthrough in our understanding of Hg accumulation and biomagnifications: the remobilization of methyl-Hg from sediments to aquatic plants and differences in uptake mechanisms of inorganic and methyl-Hg in a macrophyte.
وصف الملف:	print
الوصول الحر:	https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-192035Test
قاعدة البيانات:	SwePub

ResultId	1
Header	edsswe SwePub edsswe.oai.DiVA.org.uu.192035 740 6 unknown 740.365539550781
PLink	https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edsswe&AN=edsswe.oai.DiVA.org.uu.192035&custid=s6537998&authtype=sso
FullText	Array ( [Availability] => 0 )
Items	Array ( [Name] => Title [Label] => Title [Group] => Ti [Data] => Mercury bioaccumulation in the aquatic plant Elodea nuttallii in the field and in microcosm: Accumulation in shoots from the water might involve copper transporters ) Array ( [Name] => Author [Label] => Authors [Group] => Au [Data] => <searchLink fieldCode="AR" term="%22Regier%2C+N%2E%22">Regier, N.</searchLink><br /><searchLink fieldCode="AR" term="%22Larras%2C+F%2E%22">Larras, F.</searchLink><br /><searchLink fieldCode="AR" term="%22Bravo%2C+Andrea+Garcia%22">Bravo, Andrea Garcia</searchLink><br /><searchLink fieldCode="AR" term="%22Ungureanu%2C+V%2E+-G%22">Ungureanu, V. -G</searchLink><br /><searchLink fieldCode="AR" term="%22Amouroux%2C+D%2E%22">Amouroux, D.</searchLink><br /><searchLink fieldCode="AR" term="%22Cosio%2C+C%2E%22">Cosio, C.</searchLink> ) Array ( [Name] => TitleSource [Label] => Source [Group] => Src [Data] => <i>Chemosphere</i>. 90(2):595-602 ) Array ( [Name] => Subject [Label] => Subject Terms [Group] => Su [Data] => <searchLink fieldCode="DE" term="%22Cu%22">Cu</searchLink><br /><searchLink fieldCode="DE" term="%22Fate%22">Fate</searchLink><br /><searchLink fieldCode="DE" term="%22Hg%22">Hg</searchLink><br /><searchLink fieldCode="DE" term="%22Sediments%22">Sediments</searchLink><br /><searchLink fieldCode="DE" term="%22Submerged+macrophyte%22">Submerged macrophyte</searchLink><br /><searchLink fieldCode="DE" term="%22Aquatic+environments%22">Aquatic environments</searchLink><br /><searchLink fieldCode="DE" term="%22Aquatic+plants%22">Aquatic plants</searchLink><br /><searchLink fieldCode="DE" term="%22Biomagnification%22">Biomagnification</searchLink><br /><searchLink fieldCode="DE" term="%22Cell+sap%22">Cell sap</searchLink><br /><searchLink fieldCode="DE" term="%22Cellular+levels%22">Cellular levels</searchLink><br /><searchLink fieldCode="DE" term="%22Demethylation%22">Demethylation</searchLink><br /><searchLink fieldCode="DE" term="%22Elodea+nuttallii%22">Elodea nuttallii</searchLink><br /><searchLink fieldCode="DE" term="%22Food+webs%22">Food webs</searchLink><br /><searchLink fieldCode="DE" term="%22Hg+concentrations%22">Hg concentrations</searchLink><br /><searchLink fieldCode="DE" term="%22High+organic%22">High organic</searchLink><br /><searchLink fieldCode="DE" term="%22Macrophytes%22">Macrophytes</searchLink><br /><searchLink fieldCode="DE" term="%22Mercury+bioaccumulation%22">Mercury bioaccumulation</searchLink><br /><searchLink fieldCode="DE" term="%22Remobilization%22">Remobilization</searchLink><br /><searchLink fieldCode="DE" term="%22Romania%22">Romania</searchLink><br /><searchLink fieldCode="DE" term="%22Uptake+mechanism%22">Uptake mechanism</searchLink><br /><searchLink fieldCode="DE" term="%22Water+columns%22">Water columns</searchLink><br /><searchLink fieldCode="DE" term="%22Alkylation%22">Alkylation</searchLink><br /><searchLink fieldCode="DE" term="%22Bioaccumulation%22">Bioaccumulation</searchLink><br /><searchLink fieldCode="DE" term="%22Copper%22">Copper</searchLink><br /><searchLink fieldCode="DE" term="%22Mercury+%28metal%29%22">Mercury (metal)</searchLink><br /><searchLink fieldCode="DE" term="%22Plants+%28botany%29%22">Plants (botany)</searchLink><br /><searchLink fieldCode="DE" term="%22Reservoirs+%28water%29%22">Reservoirs (water)</searchLink><br /><searchLink fieldCode="DE" term="%22Sedimentology%22">Sedimentology</searchLink><br /><searchLink fieldCode="DE" term="%22Biochemistry%22">Biochemistry</searchLink><br /><searchLink fieldCode="DE" term="%22mercury%22">mercury</searchLink><br /><searchLink fieldCode="DE" term="%22biological+uptake%22">biological uptake</searchLink><br /><searchLink fieldCode="DE" term="%22biotransformation%22">biotransformation</searchLink><br /><searchLink fieldCode="DE" term="%22ecotoxicology%22">ecotoxicology</searchLink><br /><searchLink fieldCode="DE" term="%22environmental+fate%22">environmental fate</searchLink><br /><searchLink fieldCode="DE" term="%22fieldwork%22">fieldwork</searchLink><br /><searchLink fieldCode="DE" term="%22food+web%22">food web</searchLink><br /><searchLink fieldCode="DE" term="%22macrophyte%22">macrophyte</searchLink><br /><searchLink fieldCode="DE" term="%22mercury+%28element%29%22">mercury (element)</searchLink><br /><searchLink fieldCode="DE" term="%22microcosm%22">microcosm</searchLink><br /><searchLink fieldCode="DE" term="%22pollution+tolerance%22">pollution tolerance</searchLink><br /><searchLink fieldCode="DE" term="%22reservoir%22">reservoir</searchLink><br /><searchLink fieldCode="DE" term="%22sediment+pollution%22">sediment pollution</searchLink><br /><searchLink fieldCode="DE" term="%22shoot%22">shoot</searchLink><br /><searchLink fieldCode="DE" term="%22submerged+vegetation%22">submerged vegetation</searchLink><br /><searchLink fieldCode="DE" term="%22aquatic+species%22">aquatic species</searchLink><br /><searchLink fieldCode="DE" term="%22article%22">article</searchLink><br /><searchLink fieldCode="DE" term="%22cellular+distribution%22">cellular distribution</searchLink><br /><searchLink fieldCode="DE" term="%22metabolism%22">metabolism</searchLink><br /><searchLink fieldCode="DE" term="%22nonhuman%22">nonhuman</searchLink><br /><searchLink fieldCode="DE" term="%22plant%22">plant</searchLink><br /><searchLink fieldCode="DE" term="%22plant+root%22">plant root</searchLink><br /><searchLink fieldCode="DE" term="%22transport+kinetics%22">transport kinetics</searchLink> ) Array ( [Name] => Abstract [Label] => Description [Group] => Ab [Data] => Previous studies suggest that macrophytes might participate in bioaccumulation and biomagnification of toxic mercury (Hg) in aquatic environment. Hg bioaccumulation and uptake mechanisms in macrophytes need therefore to be studied. Amongst several macrophytes collected in an Hg contaminated reservoir in Romania, Elodea nuttallii showed a high organic and inorganic Hg accumulation and was then further studied in the laboratory.Tolerance and accumulation of Hg of this plant was also high in the microcosm. Basipetal transport of inorganic Hg was predominant, whereas acropetal transport of methyl-Hg was observed with apparently negligible methylation or demethylation in planta. Hg concentrations were higher in roots>leaves>stems and in top>middle>bottom of shoots. In shoots, more than 60% Hg was found intracellularly where it is believed to be highly available to predators. Accumulation in shoots was highly reduced by cold, death and by competition with Cu+.Hg in E. nuttallii shoots seems to mainly originate from the water column, but methyl-Hg could also be remobilized from the sediments and might drive in part its entry in the food web. At the cellular level, uptake of Hg into the cell sap of shoots seems linked to the metabolism and to copper transporters. The present work highlights an important breakthrough in our understanding of Hg accumulation and biomagnifications: the remobilization of methyl-Hg from sediments to aquatic plants and differences in uptake mechanisms of inorganic and methyl-Hg in a macrophyte. ) Array ( [Name] => Format [Label] => File Description [Group] => SrcInfo [Data] => print ) Array ( [Name] => URL [Label] => Access URL [Group] => URL [Data] => <link linkTarget="URL" linkTerm="https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-192035" linkWindow="_blank">https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-192035</link> )
RecordInfo	Array ( [BibEntity] => Array ( [Identifiers] => Array ( [0] => Array ( [Type] => doi [Value] => 10.1016/j.chemosphere.2012.08.043 ) ) [Languages] => Array ( [0] => Array ( [Text] => English ) ) [PhysicalDescription] => Array ( [Pagination] => Array ( [PageCount] => 8 [StartPage] => 595 ) ) [Subjects] => Array ( [0] => Array ( [SubjectFull] => Cu [Type] => general ) [1] => Array ( [SubjectFull] => Fate [Type] => general ) [2] => Array ( [SubjectFull] => Hg [Type] => general ) [3] => Array ( [SubjectFull] => Sediments [Type] => general ) [4] => Array ( [SubjectFull] => Submerged macrophyte [Type] => general ) [5] => Array ( [SubjectFull] => Aquatic environments [Type] => general ) [6] => Array ( [SubjectFull] => Aquatic plants [Type] => general ) [7] => Array ( [SubjectFull] => Biomagnification [Type] => general ) [8] => Array ( [SubjectFull] => Cell sap [Type] => general ) [9] => Array ( [SubjectFull] => Cellular levels [Type] => general ) [10] => Array ( [SubjectFull] => Demethylation [Type] => general ) [11] => Array ( [SubjectFull] => Elodea nuttallii [Type] => general ) [12] => Array ( [SubjectFull] => Food webs [Type] => general ) [13] => Array ( [SubjectFull] => Hg concentrations [Type] => general ) [14] => Array ( [SubjectFull] => High organic [Type] => general ) [15] => Array ( [SubjectFull] => Macrophytes [Type] => general ) [16] => Array ( [SubjectFull] => Mercury bioaccumulation [Type] => general ) [17] => Array ( [SubjectFull] => Remobilization [Type] => general ) [18] => Array ( [SubjectFull] => Romania [Type] => general ) [19] => Array ( [SubjectFull] => Uptake mechanism [Type] => general ) [20] => Array ( [SubjectFull] => Water columns [Type] => general ) [21] => Array ( [SubjectFull] => Alkylation [Type] => general ) [22] => Array ( [SubjectFull] => Bioaccumulation [Type] => general ) [23] => Array ( [SubjectFull] => Copper [Type] => general ) [24] => Array ( [SubjectFull] => Mercury (metal) [Type] => general ) [25] => Array ( [SubjectFull] => Plants (botany) [Type] => general ) [26] => Array ( [SubjectFull] => Reservoirs (water) [Type] => general ) [27] => Array ( [SubjectFull] => Sedimentology [Type] => general ) [28] => Array ( [SubjectFull] => Biochemistry [Type] => general ) [29] => Array ( [SubjectFull] => mercury [Type] => general ) [30] => Array ( [SubjectFull] => biological uptake [Type] => general ) [31] => Array ( [SubjectFull] => biotransformation [Type] => general ) [32] => Array ( [SubjectFull] => ecotoxicology [Type] => general ) [33] => Array ( [SubjectFull] => environmental fate [Type] => general ) [34] => Array ( [SubjectFull] => fieldwork [Type] => general ) [35] => Array ( [SubjectFull] => food web [Type] => general ) [36] => Array ( [SubjectFull] => macrophyte [Type] => general ) [37] => Array ( [SubjectFull] => mercury (element) [Type] => general ) [38] => Array ( [SubjectFull] => microcosm [Type] => general ) [39] => Array ( [SubjectFull] => pollution tolerance [Type] => general ) [40] => Array ( [SubjectFull] => reservoir [Type] => general ) [41] => Array ( [SubjectFull] => sediment pollution [Type] => general ) [42] => Array ( [SubjectFull] => shoot [Type] => general ) [43] => Array ( [SubjectFull] => submerged vegetation [Type] => general ) [44] => Array ( [SubjectFull] => aquatic species [Type] => general ) [45] => Array ( [SubjectFull] => article [Type] => general ) [46] => Array ( [SubjectFull] => cellular distribution [Type] => general ) [47] => Array ( [SubjectFull] => metabolism [Type] => general ) [48] => Array ( [SubjectFull] => nonhuman [Type] => general ) [49] => Array ( [SubjectFull] => plant [Type] => general ) [50] => Array ( [SubjectFull] => plant root [Type] => general ) [51] => Array ( [SubjectFull] => transport kinetics [Type] => general ) ) [Titles] => Array ( [0] => Array ( [TitleFull] => Mercury bioaccumulation in the aquatic plant Elodea nuttallii in the field and in microcosm: Accumulation in shoots from the water might involve copper transporters [Type] => main ) ) ) [BibRelationships] => Array ( [HasContributorRelationships] => Array ( [0] => Array ( [PersonEntity] => Array ( [Name] => Array ( [NameFull] => Regier, N. ) ) ) [1] => Array ( [PersonEntity] => Array ( [Name] => Array ( [NameFull] => Larras, F. ) ) ) [2] => Array ( [PersonEntity] => Array ( [Name] => Array ( [NameFull] => Bravo, Andrea Garcia ) ) ) [3] => Array ( [PersonEntity] => Array ( [Name] => Array ( [NameFull] => Ungureanu, V. -G ) ) ) [4] => Array ( [PersonEntity] => Array ( [Name] => Array ( [NameFull] => Amouroux, D. ) ) ) [5] => Array ( [PersonEntity] => Array ( [Name] => Array ( [NameFull] => Cosio, C. ) ) ) ) [IsPartOfRelationships] => Array ( [0] => Array ( [BibEntity] => Array ( [Dates] => Array ( [0] => Array ( [D] => 01 [M] => 01 [Type] => published [Y] => 2013 ) ) [Identifiers] => Array ( [0] => Array ( [Type] => issn-print [Value] => 00456535 ) [1] => Array ( [Type] => issn-print [Value] => 18791298 ) [2] => Array ( [Type] => issn-locals [Value] => UU_SWEPUB ) ) [Numbering] => Array ( [0] => Array ( [Type] => volume [Value] => 90 ) [1] => Array ( [Type] => issue [Value] => 2 ) ) [Titles] => Array ( [0] => Array ( [TitleFull] => Chemosphere [Type] => main ) ) ) ) ) ) )
IllustrationInfo