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Score: 20.00
Title: Sugar uptake analysis of suspension Arabidopsis , tobacco , and rice cells in various media using an FT-IR/ATR method .
Author: Suehara KI Kameoka T Hashimoto A
Journal: Bioprocess Biosyst Eng Citation: V : P : Year: 2012 Type: Publisher
Literature: oryza Field: abstract Doc ID: pub22395819 Accession (PMID): 22395819
Abstract: The kinetic behavior of the sugar uptake phenomena of a suspension of Arabidopsis cells was investigated by mid-infrared spectroscopy using Fourier transform infrared spectrometers and attenuated total reflection techniques . The kinetic behavior of the cell growth was also studied and the growth and the sugar uptake behaviors were discussed for three typical plant cells ( Arabidopsis , TBY-2 , and rice cells ) . The cell growth rate and the lag period were influenced by not only the types of the plant cells , but also the sugar species used as the carbon source . The characteristics of the sugar uptake behavior were clarified based on the difference in the three types of plant cells . The cell growth and the sugar uptake progressed at approximately the same time in the TBY-2 cells . In the rice cells , the sugar uptake rate was relatively lower than that of the others . On the other hand , the sugar uptake of the Arabidopsis cells started before the cell growth . Furthermore , glucose as the carbon source of the Arabidopsis cell cultivation seems to significantly influence the sugar metabolism . Glucose had a significant influence on the sugar metabolism of the other sugar under the conditions for the mixture of glucose and the other sugar . The characteristics of the sugar uptake phenomena based on the cell growth stage was typical for each plant cell except for some sugars , such as galactose and trehalose , and the behavior of the total sugar uptake had not changed . These results suggested that the cell growth and the sugar uptake in the plant cell cultivation processes may be controlled by the combined supply of the sugar species as the carbon source . The detailed data for plant cell cultivation using each sugar obtained in this study would be useful for bioscience research and for cultivation process control using various sugars , for example , purified or sugar mixtures formed from biomass materials .
Matching Sentences:
[ Sen. 9, subscore: 3.00 ]: Glucose had a significant influence on the sugar metabolism of the other sugar under the conditions for the mixture of glucose and the other sugar .
[ Sen. 10, subscore: 3.00 ]: The characteristics of the sugar uptake phenomena based on the cell growth stage was typical for each plant cell except for some sugars , such as galactose and trehalose , and the behavior of the total sugar uptake had not changed .
[ Sen. 11, subscore: 3.00 ]: These results suggested that the cell growth and the sugar uptake in the plant cell cultivation processes may be controlled by the combined supply of the sugar species as the carbon source .
[ Sen. 12, subscore: 3.00 ]: The detailed data for plant cell cultivation using each sugar obtained in this study would be useful for bioscience research and for cultivation process control using various sugars , for example , purified or sugar mixtures formed from biomass materials .
[ Sen. 1, subscore: 1.00 ]: The kinetic behavior of the sugar uptake phenomena of a suspension of Arabidopsis cells was investigated by mid-infrared spectroscopy using Fourier transform infrared spectrometers and attenuated total reflection techniques .
[ Sen. 2, subscore: 1.00 ]: The kinetic behavior of the cell growth was also studied and the growth and the sugar uptake behaviors were discussed for three typical plant cells ( Arabidopsis , TBY-2 , and rice cells ) .
[ Sen. 3, subscore: 1.00 ]: The cell growth rate and the lag period were influenced by not only the types of the plant cells , but also the sugar species used as the carbon source .
[ Sen. 4, subscore: 1.00 ]: The characteristics of the sugar uptake behavior were clarified based on the difference in the three types of plant cells .
[ Sen. 5, subscore: 1.00 ]: The cell growth and the sugar uptake progressed at approximately the same time in the TBY-2 cells .
[ Sen. 6, subscore: 1.00 ]: In the rice cells , the sugar uptake rate was relatively lower than that of the others .
[ Sen. 7, subscore: 1.00 ]: On the other hand , the sugar uptake of the Arabidopsis cells started before the cell growth .
[ Sen. 8, subscore: 1.00 ]: Furthermore , glucose as the carbon source of the Arabidopsis cell cultivation seems to significantly influence the sugar metabolism .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 14.00
Title: Interaction between rice MYBGA and the gibberellin response element controls it issue-specific sugar sensitivity of alpha-amylase genes .
Author: Chen PW Chiang CM Tseng TH Yu SM .
Journal: Plant Cell Citation: V : 18 ( 9 ) P : 2326-40 Year: 2006 Type: ARTICLE
Literature: oryza Field: abstract Doc ID: pub16905658 Accession (PMID): 16905658
Abstract: Expression of alpha-amylase genes during cereal grain germination and seedling growth is regulated negatively by sugar in embryos and positively by gibberellin ( GA ) in endosperm through the sugar response complex ( SRC ) and the GA response complex ( GARC ) , respectively . We analyzed two alpha-amylase promoters , alphaAmy3 containing only SRC and alphaAmy8 containing overlapped SRC and GARC . alphaAmy3 was sugar-sensitive but GA-nonresponsive in both rice ( Oryza sativa ) embryos and endosperms , whereas alphaAmy8 was sugar-sensitive in embryos and GA-responsive in endosperms . Mutation of the GA response element ( GARE ) in the alphaAmy8 promoter impaired its GA response but enhanced sugar sensitivity , and insertion of GARE in the alphaAmy3 promoter rendered it GA-responsive but sugar-insensitive in endosperms . Expression of the GARE-interacting transcription factor MYBGA was induced by GA in endosperms , correlating with the endosperm-specific alphaAmy8 GA response . alphaAmy8 became sugar-sensitive in MYBGA knockout mutant endosperms , suggesting that the MYBGA-GARE interaction overrides the sugar sensitivity of alphaAmy8 . In embryos overexpressing MYBGA , alphaAmy8 became sugar-insensitive , indicating that MYBGA affects sugar repression . alpha-Amylase promoters active in endosperms contain GARE , whereas those active in embryos may or may not contain GARE , confirming that the GARE and GA-induced MYBGA interaction prevents sugar feedback repression of endosperm alpha-amylase genes . We demonstrate that the MYBGA-GARE interaction affects sugar feedback control in balanced energy production during seedling growth and provide insight into the control mechanisms of it issue-specific regulation of alpha-amylase expression by sugar and GA signaling interference .
Matching Sentences:
[ Sen. 5, subscore: 3.00 ]: Expression of the GARE-interacting transcription factor MYBGA was induced by GA in endosperms , correlating with the endosperm-specific alphaAmy8 GA response . alphaAmy8 became sugar-sensitive in MYBGA knockout mutant endosperms , suggesting that the MYBGA-GARE interaction overrides the sugar sensitivity of alphaAmy8 .
[ Sen. 6, subscore: 3.00 ]: In embryos overexpressing MYBGA , alphaAmy8 became sugar-insensitive , indicating that MYBGA affects sugar repression . alpha-Amylase promoters active in endosperms contain GARE , whereas those active in embryos may or may not contain GARE , confirming that the GARE and GA-induced MYBGA interaction prevents sugar feedback repression of endosperm alpha-amylase genes .
[ Sen. 1, subscore: 2.00 ]: Expression of alpha-amylase genes during cereal grain germination and seedling growth is regulated negatively by sugar in embryos and positively by gibberellin ( GA ) in endosperm through the sugar response complex ( SRC ) and the GA response complex ( GARC ) , respectively .
[ Sen. 3, subscore: 2.00 ]: alphaAmy3 was sugar-sensitive but GA-nonresponsive in both rice ( Oryza sativa ) embryos and endosperms , whereas alphaAmy8 was sugar-sensitive in embryos and GA-responsive in endosperms .
[ Sen. 4, subscore: 2.00 ]: Mutation of the GA response element ( GARE ) in the alphaAmy8 promoter impaired its GA response but enhanced sugar sensitivity , and insertion of GARE in the alphaAmy3 promoter rendered it GA-responsive but sugar-insensitive in endosperms .
[ Sen. 7, subscore: 2.00 ]: We demonstrate that the MYBGA-GARE interaction affects sugar feedback control in balanced energy production during seedling growth and provide insight into the control mechanisms of it issue-specific regulation of alpha-amylase expression by sugar and GA signaling interference .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 13.00
Title: Role of oviposition preference in an invasive crambid impacting two graminaceous host crops .
Author: Reay-Jones FP Wilson LT Showler AT Reagan TE Way MO
Journal: Environ Entomol Citation: V : 36 P : 938-51 Year: 2007 Type: MEDLINE
Literature: oryza Field: abstract Doc ID: pub17716486 Accession (PMID): 17716486
Abstract: Oviposition preference studies of the Mexican rice borer , Eoreuma loftini ( Dyar ) , on sugarcane , Saccharum spp . , and rice , Oryza sativa L , showed that drought stressed sugarcane was 1 . 8-fold more attractive based on egg masses/plant than well watered sugarcane . The E loftini susceptible sugarcane cultivar LCP 85-384 was 1 . 6-fold more attractive than HoCP 85-845 based on numbers of eggs per egg mass . Egg masses were 9 . 2-fold more abundant and 2 . 3-fold larger on sugarcane than on rice . Rice , however , was preferred to sugarcane on a plant biomass basis . Oviposition on sugarcane occurred exclusively on dry leaf material , which increased under drought stress . Egg masses per plant increased on drought stressed sugarcane and were correlated with several foliar free amino acids essential for insect growth and development . The more resistant ( based on injury ) but more attractive ( based on oviposition ) rice cultivar XL8 had higher levels of several free amino acids than the susceptible cultivar Cocodrie . The association of host plant characteristics to oviposition preference is discussed . Projected oviposition patterns relative to sugarcane and rice production areas were estimated for Texas and Louisiana based on the availability of each host in different regions of each state . These results suggest that , where sugarcane and rice co-occur , the majority of eggs would be found on sugarcane early in the season , because of this crops substantially greater biomass compared with rice . Abundance later in the season would also favor sugarcane ; however , the abundance on rice would be greater than expected solely based on host availability , largely because of the greater preference per gram of rice plant dry weight .
Matching Sentences:
[ Sen. 1, subscore: 3.00 ]: Oviposition preference studies of the Mexican rice borer , Eoreuma loftini ( Dyar ) , on sugarcane , Saccharum spp . , and rice , Oryza sativa L , showed that drought stressed sugarcane was 1 . 8-fold more attractive based on egg masses/plant than well watered sugarcane .
[ Sen. 10, subscore: 3.00 ]: These results suggest that , where sugarcane and rice co-occur , the majority of eggs would be found on sugarcane early in the season , because of this crops substantially greater biomass compared with rice .
[ Sen. 2, subscore: 1.00 ]: The E loftini susceptible sugarcane cultivar LCP 85-384 was 1 . 6-fold more attractive than HoCP 85-845 based on numbers of eggs per egg mass .
[ Sen. 3, subscore: 1.00 ]: Egg masses were 9 . 2-fold more abundant and 2 . 3-fold larger on sugarcane than on rice .
[ Sen. 4, subscore: 1.00 ]: Rice , however , was preferred to sugarcane on a plant biomass basis .
[ Sen. 5, subscore: 1.00 ]: Oviposition on sugarcane occurred exclusively on dry leaf material , which increased under drought stress .
[ Sen. 6, subscore: 1.00 ]: Egg masses per plant increased on drought stressed sugarcane and were correlated with several foliar free amino acids essential for insect growth and development .
[ Sen. 9, subscore: 1.00 ]: Projected oviposition patterns relative to sugarcane and rice production areas were estimated for Texas and Louisiana based on the availability of each host in different regions of each state .
[ Sen. 11, subscore: 1.00 ]: Abundance later in the season would also favor sugarcane ; however , the abundance on rice would be greater than expected solely based on host availability , largely because of the greater preference per gram of rice plant dry weight .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 10.00
Title: Hexokinase-mediated sugar signaling controls expression of the calcineurin B-like interacting protein kinase 15 gene and is perturbed by oxidative phosphorylation inhibition .
Author: Yim HK Lim MN Lee SE Lim J Lee Y Hwang YS
Journal: J Plant Physiol Citation: V : P : Year: 2012 Type: Publisher
Literature: oryza Field: abstract Doc ID: pub22796010 Accession (PMID): 22796010
Abstract: Calcineurin B-like ( CBL ) interacting protein kinase 15 ( CIPK15 ) is a newly identified positive regulator which is critical to directing the O ( 2 ) deficiency signal to the sugar signaling cascade as part of Amy3D ( representative Amy3 gene ) regulation in rice . It is located upstream and probably contributes to reserve mobilization under anoxia . In isolated starving embryos , the temporal pattern of accumulation of CIPK15 transcripts and leaky suppression of this gene suggests that factors other than CIPK15 may also be involved in the regulation of Amy3D expression . Probing of a variety of sugars and sugar analogs has shown that hexokinase mediates the sugar regulation of CIPK15 . For example , hexokinase substrates , such as mannose , 2-deoxyglucose , and other metabolizable sugars , repressed CIPK15 expression , whereas 3-O-methylglucose and 6-deoxyglucose did not . By using glucosamine , a hexokinase inhibitor , to release glucose-dependent CIPK15 suppression , we confirmed that hexokinase mediates regulation of this gene . Chemical inhibitors of mitochondrial electron transfer , proton separation or ATP synthase also effectively abolished sugar-induced repression of CIPK15 . This type of interference , the release from glucose-induced repression of gene expression by inhibition of oxidative phosphorylation , was previously identified for the Amy3D gene , which suggests that hexokinase-mediated sugar signaling may be coordinated with the cellular energy status . Analysis of a transgenic rice cell line harboring the GUS reporter gene under the control of the CIPK15 promoter , and transient expression assay for 3 UTR of the CIPK15 gene indicate that sugar regulation of the rice CIPK15 gene is likely mediated by 2548-bp 5-flanking region , with no additional post-transcriptional control .
Matching Sentences:
[ Sen. 4, subscore: 3.00 ]: Probing of a variety of sugars and sugar analogs has shown that hexokinase mediates the sugar regulation of CIPK15 .
[ Sen. 8, subscore: 2.00 ]: This type of interference , the release from glucose-induced repression of gene expression by inhibition of oxidative phosphorylation , was previously identified for the Amy3D gene , which suggests that hexokinase-mediated sugar signaling may be coordinated with the cellular energy status .
[ Sen. 1, subscore: 1.00 ]: Calcineurin B-like ( CBL ) interacting protein kinase 15 ( CIPK15 ) is a newly identified positive regulator which is critical to directing the O ( 2 ) deficiency signal to the sugar signaling cascade as part of Amy3D ( representative Amy3 gene ) regulation in rice .
[ Sen. 3, subscore: 1.00 ]: In isolated starving embryos , the temporal pattern of accumulation of CIPK15 transcripts and leaky suppression of this gene suggests that factors other than CIPK15 may also be involved in the regulation of Amy3D expression .
[ Sen. 5, subscore: 1.00 ]: For example , hexokinase substrates , such as mannose , 2-deoxyglucose , and other metabolizable sugars , repressed CIPK15 expression , whereas 3-O-methylglucose and 6-deoxyglucose did not .
[ Sen. 7, subscore: 1.00 ]: Chemical inhibitors of mitochondrial electron transfer , proton separation or ATP synthase also effectively abolished sugar-induced repression of CIPK15 .
[ Sen. 9, subscore: 1.00 ]: Analysis of a transgenic rice cell line harboring the GUS reporter gene under the control of the CIPK15 promoter , and transient expression assay for 3 UTR of the CIPK15 gene indicate that sugar regulation of the rice CIPK15 gene is likely mediated by 2548-bp 5-flanking region , with no additional post-transcriptional control .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 9.00
Title: Sugar coordinately and differentially regulates growth and stress-related gene expression via a complex signal transduction network and multiple control mechanisms .
Author: Ho S Chao Y Tong W Yu S
Journal: Plant Physiol . Citation: V : 125 ( 2 ) P : 877-90 Year: 2001 Type: ARTICLE
Literature: oryza Field: abstract Doc ID: pub11161045 Accession (PMID): 11161045
Abstract: In plants , sugars are required to sustain growth and regulate gene expression . A large set of genes are either up or down-regulated by sugars ; however , whether there is a common mechanism and signal transduction pathway for differential and coordinated sugar regulation remain unclear . In the present study , the rice ( Oryza sativa cv Tainan 5 ) cell culture was used as a model system to address this question . Sucrose and glucose both played dual functions in gene regulation as exemplified by the up-regulation of growth-related genes and down-regulation of stress-related genes . Sugar coordinately but differentially activated or repressed gene expression , and nuclear run-on transcription and mRNA half-life analyses revealed regulation of both the transcription rate and mRNA stability . Although coordinately regulated by sugars , these growth and stress-related genes were up-regulated or down-regulated through hexokinase-dependent and/or hexokinase-independent pathways . We also found that the sugar signal transduction pathway may overlap the glycolytic pathway for gene repression . alpha-Amylase and the stress-related genes identified in this study were coordinately expressed under sugar starvation , suggesting a convergence of the nutritional and environmental stress signal transduction pathways . Together , our studies provide a new insight into the complex signal transduction network and mechanisms of sugar regulation of growth and stress-related genes in plants .
Matching Sentences:
[ Sen. 7, subscore: 3.00 ]: We also found that the sugar signal transduction pathway may overlap the glycolytic pathway for gene repression . alpha-Amylase and the stress-related genes identified in this study were coordinately expressed under sugar starvation , suggesting a convergence of the nutritional and environmental stress signal transduction pathways .
[ Sen. 2, subscore: 2.00 ]: A large set of genes are either up or down-regulated by sugars ; however , whether there is a common mechanism and signal transduction pathway for differential and coordinated sugar regulation remain unclear .
[ Sen. 1, subscore: 1.00 ]: In plants , sugars are required to sustain growth and regulate gene expression .
[ Sen. 5, subscore: 1.00 ]: Sugar coordinately but differentially activated or repressed gene expression , and nuclear run-on transcription and mRNA half-life analyses revealed regulation of both the transcription rate and mRNA stability .
[ Sen. 6, subscore: 1.00 ]: Although coordinately regulated by sugars , these growth and stress-related genes were up-regulated or down-regulated through hexokinase-dependent and/or hexokinase-independent pathways .
[ Sen. 8, subscore: 1.00 ]: Together , our studies provide a new insight into the complex signal transduction network and mechanisms of sugar regulation of growth and stress-related genes in plants .
Supplemental links/files: reference in endnote online text related articles pubmed citation
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