| 33 matches found in 19 documents. Search time: 0.346 seconds. |
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Score: 8.00 |
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| Title: Adsorption characterizations of fulvic acid fractions onto kaolinite .
| | Author: Li A Xu M Li W Wang X Dai J | | Journal: J Environ Sci ( China ) Citation: V : 20 P : 528-35 Year: 2008 Type: MEDLINE | | Literature: oryza Field: abstract Doc ID: pub18575104 Accession (PMID): 18575104 | | Abstract: Fulvic acids extracted from a typical rice-production region near Taihu Lake of China were fractionated into three fractions including F4 . 8 , F7 . 0 and F11 . 0 ( eluted by pH 4 . 8 buffer , pH 7 . 0 buffer and pH 11 . 0 buffer , respectively ) .
Sorption of fulvic acid ( FA ) fractions onto kaolinite was studied by batch adsorption experiments , and characterizations of kaolinite before and after adsorption were investigated using scanning electron microscopy ( SEM ) .
Adsorption isotherms of kaolinite for three FA fractions fit well with the Langmuir adsorption model .
The adsorption density of the three fractions was positively correlated with the ratio of the amount of the alkyl carbon to that of carboxyl and carbonyl carbon in FA fractions and followed an order of F11 . 0 > F7 . 0 > F4 . 8 .
Hydrophobic interaction was one of the control mechanisms for the sorption of FA fraction onto kaolinite .
SEM images confirmed that compared to blank kaolinite samples , kaolinite samples coated by a FA fraction displayed an opener and more dispersed conformation resulting from the disruption of the floc structure in complex Dispersion of kaolinite after adsorption was due to the repulsion between negatively charged FA-coated particles , which is closely related to the amount of FA fractions absorbed on kaolinite .
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[ Sen. 6, subscore: 4.00 ]: SEM images confirmed that compared to blank kaolinite samples , kaolinite samples coated by a FA fraction displayed an opener and more dispersed conformation resulting from the disruption of the floc structure in complex Dispersion of kaolinite after adsorption was due to the repulsion between negatively charged FA-coated particles , which is closely related to the amount of FA fractions absorbed on kaolinite .
[ Sen. 2, subscore: 2.00 ]: Sorption of fulvic acid ( FA ) fractions onto kaolinite was studied by batch adsorption experiments , and characterizations of kaolinite before and after adsorption were investigated using scanning electron microscopy ( SEM ) .
[ Sen. 3, subscore: 1.00 ]: Adsorption isotherms of kaolinite for three FA fractions fit well with the Langmuir adsorption model .
[ Sen. 5, subscore: 1.00 ]: Hydrophobic interaction was one of the control mechanisms for the sorption of FA fraction onto kaolinite .
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Score: 4.00 |
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| Title: A SNP in GmBADH2 gene associates with fragrance in vegetable soybean variety "Kaori" and SNAP marker development for the fragrance .
| | Author: Juwattanasomran R Somta P Chankaew S Shimizu T Wongpornchai S Kaga A Srinives P | | Journal: Theor Appl Genet Citation: V : 122 P : 533-41 Year: 2011 Type: MEDLINE | | Literature: oryza Field: abstract Doc ID: pub21046066 Accession (PMID): 21046066 | | Abstract: Fragrance in soybean is due to the presence of 2-acetyl-1-pyrroline ( 2AP ) .
BADH2 gene coding for betaine aldehyde dehydrogenase has been identified as the candidate gene responsible for fragrance in rice ( Oryza sativa L ) .
In this study , using the RIL population derived from fragrant soybean cultivar "Kaori" and non-fragrant soybean cultivar "Chiang Mai 60" ( CM60 ) , STS markers designed from BADH2 homolog were found associating with 2AP production .
Genetic mapping demonstrated that QTL position of fragrance and 2AP production coincides with the position of GmBADH2 ( Glycine max betaine aldehyde dehydrogenase 2 ) .
Sequence comparison of GmBADH2 between Kaori and non-fragrant soybeans revealed non-synonymous single-nucleotide polymorphism ( SNP ) in exon 10 .
Nucleotide substitution of G to A in the exon results in an amino acid change of glycine ( GGC ; G ) to aspartic acid ( GAC ; D ) in Kaori .
The amino acid substitution changes the conserved EGCRLGPIVS motif of GmBADH2 , which is essential for functional activity of GmBADH2 protein , to EGCRLDPIVS motif , suggesting that the SNP in GmBADH2 is responsible for the fragrance in Kaori .
Five single nucleotide-amplified polymorphism ( SNAP ) markers which are PCR-based allele specific SNP markers were developed for fragrance based on the SNP in GmBADH2 .
Two markers specific to A allele produced a band in only Kaori , while three markers specific to G alleles produced a band in only CM60 .
The simple PCR-based allele specific SNAP markers developed in the present study are useful in marker-assisted breeding of fragrant soybean .
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[ Sen. 5, subscore: 1.00 ]: Sequence comparison of GmBADH2 between Kaori and non-fragrant soybeans revealed non-synonymous single-nucleotide polymorphism ( SNP ) in exon 10 .
[ Sen. 6, subscore: 1.00 ]: Nucleotide substitution of G to A in the exon results in an amino acid change of glycine ( GGC ; G ) to aspartic acid ( GAC ; D ) in Kaori .
[ Sen. 7, subscore: 1.00 ]: The amino acid substitution changes the conserved EGCRLGPIVS motif of GmBADH2 , which is essential for functional activity of GmBADH2 protein , to EGCRLDPIVS motif , suggesting that the SNP in GmBADH2 is responsible for the fragrance in Kaori .
[ Sen. 9, subscore: 1.00 ]: Two markers specific to A allele produced a band in only Kaori , while three markers specific to G alleles produced a band in only CM60 .
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Score: 3.00 |
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| Title: Adsorption of Cry1Ab protein isolated from Bt transgenic rice on bentone , kaolin , humic acids , and soils .
| | Author: Wang H Ye Q Gan J Wu J | | Journal: J Agric Food Chem Citation: V : 56 P : 4659-64 Year: 2008 Type: In-Process | | Literature: oryza Field: abstract Doc ID: pub18512935 Accession (PMID): 18512935 | | Abstract: Adsorption on a soil matrix of the insecticidal protein from Bacillus thuringiensis ( Bt ) transgenic plants affects their accumulation and release and , hence , bioavailability in soil .
Cry1Ab protein isolated from Bt transgenic rice was used to evaluate the adsorption and desorption on bentone , kaolin , and humic acids ( HAs ) .
The adsorption equilibrium of Cry1Ab protein was reached within 1-2 h for bentone and kaolin and within 4-8 h for HAs .
The adsorption isotherms were better described by linear expressions ( R ( 2 ) >/= 0 . 973 ) rather than by the Freundlich model .
No saturation was observed , even at the maximum concentration used ( 3 . 71 microg mL ( -1 ) ) .
The adsorbed protein was not easily desorbed at the used protein concentrations ( 0 . 18-3 . 71 microg mL ( -1 ) ) ; more than 50-70% , 70-80% , and 90% of the adsorbed protein remained on HAs , kaolin , and bentone , respectively , after washing with water .
Adsorption and desorption of the Cry1Ab protein were further studied using five soils , and the isotherms were also well-described by linear equations ( p < 0 . 05 ) .
Adsorption of the Cry1Ab protein on soils was positively related to the soil organic matter content .
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[ Sen. 2, subscore: 1.00 ]: Cry1Ab protein isolated from Bt transgenic rice was used to evaluate the adsorption and desorption on bentone , kaolin , and humic acids ( HAs ) .
[ Sen. 3, subscore: 1.00 ]: The adsorption equilibrium of Cry1Ab protein was reached within 1-2 h for bentone and kaolin and within 4-8 h for HAs .
[ Sen. 6, subscore: 1.00 ]: The adsorbed protein was not easily desorbed at the used protein concentrations ( 0 . 18-3 . 71 microg mL ( -1 ) ) ; more than 50-70% , 70-80% , and 90% of the adsorbed protein remained on HAs , kaolin , and bentone , respectively , after washing with water .
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Score: 2.00 |
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| Title: An overview of gibberellin metabolism enzyme genes and their related mutants in rice .
| | Author: Sakamoto T Miura K Itoh H Tatsumi T Ueguchi-Tanaka M Ishiyama K Kobayashi M Agrawal GK Takeda S Abe K Miyao A Hirochika H Kitano H Ashikari M Matsuoka M | | Journal: Plant Physiol .
Citation: V : 134 ( 4 ) P : 1642-53 Year: 2004 Type: ARTICLE | | Literature: oryza Field: abstract Doc ID: pub15075394 Accession (PMID): 15075394 | | Abstract: To enhance our understanding of GA metabolism in rice ( Oryza sativa ) , we intensively screened and identified 29 candidate genes encoding the following GA metabolic enzymes using all available rice DNA databases : ent-copalyl diphosphate synthase ( CPS ) , ent-kaurene synthase ( KS ) , ent-kaurene oxidase ( KO ) , ent-kaurenoic acid oxidase ( KAO ) , GA 20-oxidase ( GA20ox ) , GA 3-oxidase ( GA3ox ) , and GA 2-oxidase ( GA2ox ) .
In contrast to the Arabidopsis genome , multiple CPS-like , KS-like , and KO-like genes were identified in the rice genome , most of which are contiguously arranged .
We also identified 18 GA-deficient rice mutants at six different loci from rice mutant collections .
Based on the mutant and expression analyses , we demonstrated that the enzymes catalyzing the early steps in the GA biosynthetic pathway ( ie CPS , KS , KO , and KAO ) are mainly encoded by single genes , while those for later steps ( ie GA20ox , GA3ox , and GA2ox ) are encoded by gene families .
The remaining CPS-like , KS-like , and KO-like genes were likely to be involved in the biosynthesis of diterpene phytoalexins rather than GAs because the expression of two CPS-like and three KS-like genes ( OsCPS2 , OsCPS4 , OsKS4 , OsKS7 , and OsKS8 ) were increased by UV irradiation , and four of these genes ( OsCPS2 , OsCPS4 , OsKS4 , and OsKS7 ) were also induced by an elicitor treatment . | Matching Sentences:
[ Sen. 1, subscore: 1.00 ]: To enhance our understanding of GA metabolism in rice ( Oryza sativa ) , we intensively screened and identified 29 candidate genes encoding the following GA metabolic enzymes using all available rice DNA databases : ent-copalyl diphosphate synthase ( CPS ) , ent-kaurene synthase ( KS ) , ent-kaurene oxidase ( KO ) , ent-kaurenoic acid oxidase ( KAO ) , GA 20-oxidase ( GA20ox ) , GA 3-oxidase ( GA3ox ) , and GA 2-oxidase ( GA2ox ) .
[ Sen. 4, subscore: 1.00 ]: Based on the mutant and expression analyses , we demonstrated that the enzymes catalyzing the early steps in the GA biosynthetic pathway ( ie CPS , KS , KO , and KAO ) are mainly encoded by single genes , while those for later steps ( ie GA20ox , GA3ox , and GA2ox ) are encoded by gene families .
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Score: 2.00 |
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| Title: Azaphilone pigments from a yellow mutant of the fungus Monascus kaoliang .
| | Author: Jongrungruangchok S Kittakoop P Yongsmith B Bavovada R Tanasupawat S Lartpornmatulee N Thebtaranonth Y | | Journal: Phytochemistry Citation: V : 65 ( 18 ) P : 2569-75 Year: 2004 Type: ARTICLE | | Literature: oryza Field: abstract Doc ID: pub15451319 Accession (PMID): 15451319 | | Abstract: Azaphilone pigments , monascusones A ( 1 ) and B ( 2 ) , together with two known azaphilones , monascin ( 3 ) and FK17-P2b2 ( 4 ) , were isolated from the CH2Cl2 extract of a yellow mutant of the fungus M kaoliang grown on rice .
Structures of the isolated compounds were elucidated by analyses of spectroscopic data .
Monascusone A ( 1 ) , the major metabolite of M kaoliang , showed no antimalarial ( against Plasmodium falciparum ) , antitubercular ( against Mycobacterium tuberculosis H37Ra ) , and antifungal ( toward Candida albicans ) activities .
Compound 1 exhibited no cytotoxicity against BC ( breast cancer ) and KB ( human epidermoid carcinoma of cavity ) cell lines .
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[ Sen. 1, subscore: 1.00 ]: Azaphilone pigments , monascusones A ( 1 ) and B ( 2 ) , together with two known azaphilones , monascin ( 3 ) and FK17-P2b2 ( 4 ) , were isolated from the CH2Cl2 extract of a yellow mutant of the fungus M kaoliang grown on rice .
[ Sen. 3, subscore: 1.00 ]: Monascusone A ( 1 ) , the major metabolite of M kaoliang , showed no antimalarial ( against Plasmodium falciparum ) , antitubercular ( against Mycobacterium tuberculosis H37Ra ) , and antifungal ( toward Candida albicans ) activities .
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