ライフサイエンスコーパス: selenate

1 o environmentally relevant concentrations of selenate.

2 y (88-95%) organic C-Se-C; the remainder was selenate.

3 the grain more efficiently than selenite and selenate.

4 nine) in addition to some selenocysteine and selenate.

5 atile Se compounds when they were exposed to selenate.

6 erexpressors, both on media with and without selenate.

7 e tested concentrations of 0.001-10 mg l(-1) selenate.

8 robably by an inability to chemically reduce selenate.

9 plants supplied with selenite compared with selenate.

10 whereas selenate-supplied plants accumulated selenate.

11 e from T. selenatis grown anaerobically with selenate.

12 lids, thereby limiting their reactivity with selenate.

13 th myrosinase activity below 3.5-mmol sodium selenate.

14 cystine, methaneseleninic acid, selenite and selenate.

15 ata) exposed to either 20 microM selenite or selenate.

16 ironmentally relevant mineral reductants for selenate.

17 Selenate-(18)O enrichment (epsilonO) was nearly identica

18 o or supranutritional amounts of selenium as selenate (200 or 400 mug/d) or as selenomethionine (200

19 orms was higher for selenite (100%) than for selenate (26%), the absolute concentration of organosele

20 than that measured from plants supplied with selenate, 38 times higher than from selenite, and six ti

21 The mutants are resistant to selenate, a toxic analogue of sulfate.

22 (-1)DM) and the concentration (2-mmol sodium selenate) above which the content of phenolic compounds

23 cation of Se reduction and assimilation from selenate accumulated in the cladode tips into the two LC

24 methyl ketones using selenium dioxide as the selenating agent under simple reaction conditions.

25 methyl ketones using selenium dioxide as the selenating agent under simple reaction conditions.

26 teria had dramatically enhanced tolerance to selenate and a reduced level of Se accumulation.

27 ontent was lower in plants supplemented with selenate and accumulated mainly in the leaves compared w

28 elenate was completely tolerant up to 40 muM selenate and accumulated up to 200 mg of Se/kg DW in lea

29 ysis showed that cladode tips contained both selenate and C-Se-C forms.

30 ke step caused by diffusive exchange between selenate and chloride followed by a slower, high-fractio

31 h) assays, using different concentrations of selenate and competitor sulfate.

32 s to a field-realistic dose of 0.75 mg l(-1) selenate and found that microbiota-inoculated bees survi

33 in mixed-type inhibition, in the presence of selenate and potassium thiocyanate.

34 Herein, the mechanism of selenate and selenite adsorption on NU-1000 is explored

35 Biotic dissimilatory reduction of selenate and selenite and assimilation of the reduced Se

36 ested for their ability to adsorb and remove selenate and selenite anions from aqueous solutions.

37 selenium using multiple metalloenzymes, like selenate and selenite reductase.

38 Equilibrating selenate and selenite with a model NOM (Pahokee peat soi

39 ung leaf itself, there was 30% inorganic Se (selenate and selenite) in addition to 70% MeSeCys.

40 products, two foliar Se fertilisers (sodium selenate and selenite) were tested at four rates (0-10-2

41 capacity, and fastest uptake rates for both selenate and selenite, of all zirconium-based MOFs studi

42 e 53 nM (4.2 ppb Se) and 380 nM (30 ppb) for selenate and selenite, respectively.

43 ate-limiting steps in Se volatilization from selenate and selenite, time- and concentration-dependent

44 ed in high mortality to embryos/larvae while selenate and SeNPs were nontoxic.

45 from the elements, DeltaH(f,el), for Al(13) selenate and sulfate are -19,656.35 ( +/- 67.30) kJ.mol(

46 degrees C in 5 N HCl for the epsilon-Al(13) selenate and sulfate are -924.57 (+/- 3.83) and -944.30

47 affinity of the epsilon-Keggin clusters for selenate and sulfate, the enthalpy associated with two S

48 biocathode, microbes do not need to transfer selenate and the electrons from the cathode into the cel

49 slow rate of oxygen isotope exchange between selenate and water under most environmental conditions d

50 The rate of oxygen isotope exchange between selenate and water was investigated at conditions of 10

51 concentrations of inorganic Se (selenite and selenate) and applied twice to the plants in the stage o

52 sures, we examined the toxicity of selenite, selenate, and amorphous selenium nanoparticles (SeNPs).

53 rtant implications for the fate of chromate, selenate, and sulfate in subsurface environments and off

54 rized the adsorption mechanisms of chromate, selenate, and sulfate on Al-substituted ferrihydrite (0,

55 ctron acceptors such as antimonite, nitrate, selenate, and sulfate.

56 For both selenate- and selenite-supplied plants, Se accumulation

57 selectivity for the tetrahedral sulfate and selenate anions observed in competitive crystallization

58 With either selenite or selenate as substrates, Se methylation was highly effici

59 btain energy by respiring anaerobically with selenate as the terminal electron acceptor.

60 e to dimethyl selenide (DMSe): (a) uptake of selenate, (b) activation of selenate by ATP sulfurylase,

61 4 mm or more behind the apex when exposed to selenate but in the meristem (approximately 1 mm from th

62 nificantly up-regulated in plants exposed to selenate but were low in plants supplied with selenite.

63 ses survivorship when the host is exposed to selenate, but the specific mechanisms and colony-level b

64 ): (a) uptake of selenate, (b) activation of selenate by ATP sulfurylase, and (b) conversion of selen

65 experiments were performed with selenite or selenate by equilibrating suspensions containing the nan

66 (III) increases the sorption of selenite and selenate by several orders of magnitude.

67 cally favorable co-incorporation of lead and selenate by simultaneously substituting for barium and s

68 A new organic-soluble selenate, [(C6H5)4P]3(O3SeOCH2OSeO3)(HSeO4), was synthes

69 As a result, selenate can be quantified in the presence of up to 1.5

70 m jarosite, TlFe3(OH)6(SO4)2, along with the selenate-capped jarosite analogues of potassium, KFe3(OH

71 microbiome to increase survivorship against selenate challenge.

72 Molybdate, selenate, chromate ("chromium VI"), arsenate, tungstate,

73 Selenate, chromate, and arsenate produce transient APX i

74 es in selenium speciation, with selenite and selenate co-occurring in most samples.

75 lubility product very similar to that of the selenate complex.

76 elenomethionine, sodium selenite, and sodium selenate) compounds.

77 s soil, or on gravel supplied with different selenate concentrations.

78 ne-based biotechnology for bioremediation of selenate-contaminated water.

79 In addition, DeltaH(f,el) for sodium selenate decahydrate was calculated using data from high

80 t environmental conditions demonstrates that selenate-delta(18)O signatures produced by biogeochemica

81 that it will be possible to use the value of selenate-delta(18)O to investigate the biogeochemical be

82 of these microbes harbour genes involved in selenate detoxification.

83 Se) experimentally measured in a constrained selenated (diphosphino)naphthalene compound.

84 and seleno-methionine exert this effect but selenate does not.

85 lated around ten times more efficiently than selenate due to different membrane transporters.

86 the kinetic isotope effects for (18)O within selenate during abiotic reactions with iron-bearing hydr

87 The sulfate:arsenate and sulfate:selenate exchange ratios were 1:2 and 1:1, respectively.

88 sing 16S rRNA gene sequencing, we found that selenate exposure altered gut microbial community compos

89 Plants exposed to 5 microM selenate for 28 days contained predominantly selenate in

90 and for selenate on schwertmannite, whereas selenate forms outer-sphere complexes in the aluminum oc

91 is study, the metabolization of selenite and selenate fortification at low and high levels in hydropo

92 rpose of this study was to determine whether selenate fortification of infant formula would improve t

93 Selenate fortification of infant formulas can improve th

94 the most abundant species in edible parts of selenate fortified leeks especially at high levels.

95 gh bioavailability rate of total selenium in selenate fortified leeks was found to be higher, lower a

96 (n = 7, mean body weight = 1312 g) received selenate-fortified preterm and full-term infant formulas

97 lenium (Se), occurring as oxidized inorganic selenate from hypersalinized agricultural drainage water

98 Cv removed 96% of Se (supplied as selenate) from the microcosm water column within 72 h, w

99 hwertmannite and 3 times higher than that of selenate in both phases.

100 Inorganic selenate in drainage water was metabolized differently i

101 Thereby, the biotransformation of selenate in pakchoi was similar to other Brassicaceae pl

102 selenate for 28 days contained predominantly selenate in the mature leaf tissue at a concentration of

103 o investigate the biogeochemical behavior of selenate, in an analogous fashion to the use of sulfate-

104 Selenate influx in cadt1 was 2.4 times that of the wild-

105 and subsequent oxidation/elimination of the selenated intermediate 14 with H2O2.

106 the NOM can abiotically reduce highly mobile selenate into relatively less mobile selenite.

107 ted by supplementing inorganic selenium from selenate into sand.

108 luminite and schwertmannite for arsenate and selenate is compared, and the coordination geometries of

109 indicating that the ability to biotransform selenate is either inducible or developmentally specific

110 Our data suggest that Se volatilization from selenate is limited by the rate of selenate reduction, a

111 Ten-weeks post-SE, animals received sodium selenate, levetiracetam, or vehicle subcutaneousinfusion

112 Root transcriptome changes in response to selenate mimicked the effects observed under sulfur star

113 num centered epsilon-Keggin clusters, Al(13) selenate, (Na(AlO(4))Al(12)(OH)(24)(SeO(4))(4)*12H(2)O)

114 The enzyme is specific for the reduction of selenate; nitrate, nitrite, chlorate, and sulfate were n

115 f ligand for arsenate on both phases and for selenate on schwertmannite, whereas selenate forms outer

116 synergistically enhanced uptake of lead and selenate on the barite (001) surface through two sorptio

117 the soil, Se was applied either on its own (selenate only) or as a granular, Se-enriched macronutrie

118 rom 0.13-0.84 mg kg(-1), soil application of selenate-only was 2-15 times more effective than granula

119 When grown in the presence of selenate or selenite, these bacteria produced both organ

120 own in hydroponic solution supplemented with selenate or selenite.

121 um compared with plants supplied with SeMet, selenate, or selenite; they also accumulated more Se in

122 onally have evolved enhanced specificity for selenate over sulfate.

123 (approximately 5 microM), sulfate, chromate, selenate, phosphate, and chlorate did not bind even when

124 d classes of oxo compounds (i.e., vanadates, selenate, phosphate, sulfate, acetate, nitrate, and nitr

125 methylseleno-Cys concentration is lower, and selenate predominates.

126 Specifically, uptake of selenate (probably by sulfate transporters) occurred at

127 after the initial uptake step, the extent of selenate reaction is well correlated with delta(18)O val

128 er culture death, with 1.3-6.1% of the added selenate recovered as organic metabolites.

129 n was enriched with propionate metabolizers, selenate reducers, and xylan, chitin, and chlorophenol d

130 obic methanotrophs and several heterotrophic selenate reducers.

131 d Acidovorax and Denitratisoma were dominant selenate-reducing bacteria, thus forming a syntrophic pa

132 s, which was consumed as a carbon source for selenate-reducing bacteria.

133 e replicated in the laboratory via anaerobic selenate-reducing enrichment cultures.

134 nitrate reductase (napA) and membrane-bound selenate reductase (srdA) respectively.

135 The selenate reductase contains molybdenum, iron, and acid-l

136 n, and pH optimization of the membrane-bound selenate reductase from E. cloacae SLD1a-1.

137 Results show that the membrane-bound selenate reductase has optimum activity at pH approximat

138 elenium methyltransferases and a respiratory selenate reductase have also been described.

139 The membrane-bound selenate reductase of Enterobacter cloacae SLD1a-1 is pu

140 eta-subunits of microbial nitrate reductase, selenate reductase, dimethyl sulfide dehydrogenase, ethy

141 on of selenate to selenite is catalyzed by a selenate reductase, previously shown to be located in th

142 tudies constitute the first description of a selenate reductase, which represents a new class of enzy

143 These results also indicate that sulfate and selenate reduction are developmentally correlated, and t

144 TPS and APR had a significant enhancement of selenate reduction as a proportion of total Se, whereas

145 that ATPS and APR are major contributors of selenate reduction in planta.

146 Microbial methane oxidation coupled to a selenate reduction process has been proposed as a promis

147 We confirmed that the methane-supported selenate reduction process was accomplished by a microbi

148 ession resulted in only a slight increase in selenate reduction to organic forms.

149 nderstanding of methane oxidation coupled to selenate reduction under oxygen-limiting conditions but

150 d cultures able to perform methane-dependent selenate reduction under oxygen-limiting conditions.

151 ntribute to Se isotope forensics to identify selenate reduction within field sites and to possibly di

152 APR2 is a key enzyme in both sulfate and selenate reduction, and its reduced activity in the loss

153 tion from selenate is limited by the rate of selenate reduction, as well as by the availability of Se

154 us forming a syntrophic partnership to drive selenate reduction.

155 mined under pH 8 anoxic conditions, at which selenate removal was previously demonstrated to be effec

156 ate, sulfate, and nitrate) and humic acid on selenate removal were examined under pH 8 anoxic conditi

157 h other and to the previously isolated sel1 (selenate-resistant) mutants, and have been designated se

158 anced during growth on arsenate, nitrate and selenate, respectively, implicating these genes as encod

159 could be mediated by Fe(II)-rich minerals or selenate-respiring microorganisms.

160 provide evidence that treatment with sodium selenate results in a sustained disease-modifying effect

161 In the presence of selenate (Se((VI))), the precipitates formed remained sm

162 ssolved Se (30 ug/L) as selenite (Se(IV)) or selenate (Se(VI)) for 7 days followed by 3 days of depur

163 Our results show that selenate (Se(VI)) is the dominant Se species in Rosita g

164 own in the presence of selenite (Se(IV)) and selenate (Se(VI)) was investigated.

165 nt selenium oxyanions, selenite (Se(IV)) and selenate (Se(VI)), can be quantified down to 7.3 and 8.3

166 e, were optimised for five selenium species; selenate (Se(VI)), Selenite (se(IV)), selenocysteine (Se

167 rexpressors and wild type accumulated mostly selenate (Se(VI)).

168 le and soluble in its high oxidation states, selenate (Se(VI)O(4)(2-)) and selenite (Se(IV)O(3)(2-))

169 ith selenocompounds (sodium selenite, sodium selenate, Se-Met, MeSeCys) or SeB [high-Se (H-SeB) or lo

170 is study aimed to produce Se-microparticles (selenate, selenite and Se-organic) using combined method

171 amino acids" and related oxidation products, selenate, selenite, and other species relatable to the q

172 ous inorganic or organic species of Se (e.g. selenate, selenite, and Se-methionine [Met]) into gaseou

173 The stoichiometric reductions of selenate, selenite, and selenium dioxide with an iron(II

174 ession and SeMSC accumulation in response to selenate, selenite, and sulfate treatments showed that t

175 t" oxo-anion pollutants (arsenate, arsenite, selenate, selenite, chromate, and perchlorate) were sele

176 edium and amended with the selenium oxyanion selenate, selenite, or selenocyanate, produces volatile

177 d several SRM selective inhibitors including selenate, selenite, tellurate, tellurite, nitrate, nitri

178 Besides selenite and selenate, selenosulfate was the most frequently occurrin

179 Selenate (SeO(4)(2-)) reduction to elemental selenium is

180 n selenium oxoanions selenite (SeO3(2-)) and selenate (SeO4(2-)) are toxic at intake levels slightly

181 onsumers of dissolved selenite (SeO3) versus selenate (SeO4) uptake into aquatic primary producer com

182 gs grown in Turface supplied with 40-320 muM selenate showed complete tolerance up to 160 muM and acc

183 Selenate speciation (HSeO(4)(-) vs SeO(4)(2-)) also has

184 ssella alvi and Lactobacillus bombicola - in selenate-spiked media and found that these bacteria grew

185 e- or SeMet-supplied wild-type plants and in selenate-supplied ATP-sulfurylase transgenic plants.

186 cence and X-ray absorption spectroscopies of selenate-supplied hemp showed Se to accumulate mainly in

187 ic Se, most likely selenomethionine, whereas selenate-supplied plants accumulated selenate.

188 increased Se accumulation, whereas increased selenate supply increased sulfate accumulation in both r

189 nions examined were selenocyanate, selenite, selenate, tellurite, and tellurate.

190 activity was increased more by both doses of selenate than by the placebo in C-P class B patients.

191 selenium was increased more by 400 mug Se as selenate than by the placebo in C-P class C patients.

192 gation in these mutants is less sensitive to selenate than in wild-type plants.

193 Within the groups who responded to selenate, there was a considerable variation in response

194 he multicomponent 6 e(-)/8 H(+) reduction of selenate to amorphous selenium using multiple metalloenz

195 s for the assimilation and volatilization of selenate to dimethyl selenide (DMSe): (a) uptake of sele

196 The reduction of selenate to selenite is catalyzed by a selenate reductas

197 rom electrodes to microbial cells and reduce selenate to SeNPs on the cell membrane.

198 ed with two selenium compounds (selenite and selenate) to test their suitability as natural sources o

199 able to reduce selenite aerobically, but not selenate, to nano-Se.

200 CpNifS overexpression significantly enhanced selenate tolerance (1.9-fold) and Se accumulation (2.2-f

201 ant showed higher expression of the sulphate/selenate transporter gene OsSULTR1;1 and the sulphur-def

202 The present study showed that shoots of selenate-treated plants accumulated very low concentrati

203 of organoselenium (e.g. selenomethionine) in selenate-treated roots.

204 was actually approximately 5-fold higher for selenate-treated roots.

205 Root growth was adversely affected by selenate treatment in both ATPS and SAT overexpressors a

206 uate for disease modifying effects of sodium selenate treatment in the chronically epileptic rat post

207 Moreover, selenate treatment was associated with increased protein

208 The results showed that sodium selenate treatment was associated with mitigation of mea

209 trations approximately 18-fold higher in the selenate treatment.

210 Both selenite and selenate, two major inorganic forms of Se, are readily i

211 nvolve constitutive up-regulation of sulfate/selenate uptake and assimilation, associated with elevat

212 DT1 acts as a negative regulator of sulphate/selenate uptake and assimilation.

213 , 5 mM, 3 d) were also tested for effects on selenate uptake and sulfate transporters' expression.

214 In S. pinnata, selenate uptake and translocation rates are constitutive

215 ed by 100-fold excess sulfate, which reduced selenate uptake by 100% in S. elata and 40% in B. juncea

216 entrations, apparently due to suppression of selenate uptake by sulfate, and insufficient nitrogen co

217 ccumulators S. elata and Brassica juncea for selenate uptake in long- (9 d) and short-term (1 h) assa

218 The selenate uptake rate for S. pinnata (1 h) was three- to

219 Sulfate and selenate uptake were investigated in both selenium (Se)

220 addition, high levels of sulfate suppressed selenate uptake, resulting in a dramatic reduction of Bo

221 sorption capacity but had a strong impact on selenate uptake, suggesting some kind of specific intera

222 expression and interactions with sulfate and selenate uptake.

223 doubt by the high peak at its position in a selenate versus sulfate difference Fourier.

224 ulfur, plants readily take up and assimilate selenate via sulfur transporters and enzymes and can eve

225 Based upon bulk solution concentrations, selenate was 9-fold more toxic to the roots than selenit

226 hemp grown in Turface supplied with 5-80 muM selenate was completely tolerant up to 40 muM selenate a

227 The Km for selenate was determined to be 16 microM, and the Vmax wa

228 Selenate was found to be stable throughout the entire di

229 However, selenate was found to be the most abundant species in ed

230 Selenate was metabolized less than selenite in whole pla

231 n and Se dose for both fertilisers, although selenate was much more efficient.

232 Selenate was rapidly translocated to the shoot, away fro

233 Selenate was reduced to Se(0) by a green rust (chloride

234 Selenate was successfully bioremediated by microalgal me

235 Time-dependent kinetic studies showed that selenate was taken up 2-fold faster than selenite.

236 Laboratory algal cultures exposed to selenate were shown to produce and release selenomethion

237 It should be stressed that amounts of selenate were smaller than expected.

238 and inorganic selenium species (selenite and selenate) were not detected in the dialyzate.

239 r example, bees are exposed to the metalloid selenate when foraging on pollen and nectar from plants

240 accumulated relatively more C-Se-C and less selenate when growing adjacent to S. pinnata.

241 ulfate was the main mechanism for removal of selenate, whereas arsenate was removed by a combination

242 esPR plants showed directional growth toward selenate, while CP roots did not.

243 6-fold more Se and was tolerant to 20 microm selenate, while S. albescens suffered reduced growth, ch

244 Simultaneous treatment of selenate with selenite significantly reduced SeMSC produ

245 growth on antimonate, arsenate, nitrate and selenate, with the goal of identifying the respiratory a