The Experts below are selected from a list of 1908 Experts worldwide ranked by ideXlab platform
Changling Duan - One of the best experts on this subject based on the ideXlab platform.
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new steroidal glycosides from the Fibrous Roots of ophiopogon japonicus
Journal of Asian Natural Products Research, 2018Co-Authors: Changling Duan, Fengyun Wang, Lan Miao, Xudong TangAbstract:Two new steroidal glycosides (named fibrophiopogonins A, B), along with one known glycoside, were isolated from the Fibrous Roots of Ophiopogon japonicus (Liliaceae). Comprehensive spectroscopic analysis, including 2D NMR spectroscopy, and the results of acid hydrolysis allowed the chemical structure of the compounds to be assigned as 26-[(O-β-D-glucopyranosyl-(1 → 6)-D-glucopyranosyl)]-barogenin- 3-O-[α-L-rhamnopyranosyl-(1→2)]-β-D-glucopyranoside and (25R)-26-[(O- β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl)]- 3β,22α,26- trihydroxyfurost- 5-ene-3-O-[α-L-rhamnopyranosyl-(1→2)]-β-D-glucopyranoside. This is the first isolation of a cholestane glycoside with disaccharide moiety from a Ophiopogon species. The cytotoxic activities of 1~3 against A375 and MCF-7 cells are described.
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two new furostanol saponins from the Fibrous root of ophiopogon japonicus
Journal of Asian Natural Products Research, 2013Co-Authors: Zhiyun Kang, Changling Duan, Mengjia Zhang, Jianxin Wang, Dequan YuAbstract:Two new furostanol saponins ophiopogonins J (1) and K (2) were isolated from the Fibrous Roots of Ophiopogon japonicus. The structures of 1 and 2 were established as (25R)-26-O-[(β-d-glucopyranosyl-(1 → 2)-β-d-glucopyranosyl)]-14-hydroxy-furost-5,20(22)-diene 3-O-[α-l-rhamnopyranosyl-(1 → 2)]-β-d-glucopyranoside (1), and (25R)-26-O-[(β-d-glucopyranosyl-(1 → 2)-β-d-glucopyranosyl)]-furost-5,20(22)-diene 3-O-α-l-rhamnopyranosyl-(1 → 2)[(β-d-xylopyranosyl-(1 → 4)-β-d-glucopyranoside)] (2) on the basis of spectroscopic means including HRESIMS, 1D, and 2D NMR experiments.
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spirostanol saponins from the Fibrous Roots of ophiopogon japonicus thunb ker gawl
Helvetica Chimica Acta, 2010Co-Authors: Changling Duan, Yujuan Li, Peng Li, Yong Jiang, Pengfei TuAbstract:Three new steroidal saponins, (25R)-ruscogenin-3-yl α-L-rhamnopyranosyl-(12)-[β-D-xylopyranosyl-(14)]-β-D-glucopyranoside (1), diosgenin-3-yl 2-O-acetyl-α-L-rhamnopyranosyl-(12)-[β-D-xylopyranosyl-(14)]-β-D-glucopyranoside (2), and pennogenin-3-yl 2-O-acetyl-α-L-rhamnopyranosyl-(12)-[β-D-xylopyranosyl-(14)]-β-D-glucopyranoside (3) were isolated from the Fibrous Roots of Ophiopogon japonicus (Thunb.) Ker-Gawl. Their structures were determined by spectroscopic methods including IR, HR-ESI-MS, and 1D- and 2D-NMR. All of these three steroidal saponins exhibited weak cytotoxicities against Hela and Hep2 cell lines.
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spirostanol saponins from the Fibrous Roots of ophiopogon japonicus thunb ker gawl
Helvetica Chimica Acta, 2010Co-Authors: Changling Duan, Yujuan Li, Peng Li, Yong Jiang, Pengfei TuAbstract:Three new steroidal saponins, (25R)-ruscogenin-3-yl α-L-rhamnopyranosyl-(12)-[β-D-xylopyranosyl-(14)]-β-D-glucopyranoside (1), diosgenin-3-yl 2-O-acetyl-α-L-rhamnopyranosyl-(12)-[β-D-xylopyranosyl-(14)]-β-D-glucopyranoside (2), and pennogenin-3-yl 2-O-acetyl-α-L-rhamnopyranosyl-(12)-[β-D-xylopyranosyl-(14)]-β-D-glucopyranoside (3) were isolated from the Fibrous Roots of Ophiopogon japonicus (Thunb.) Ker-Gawl. Their structures were determined by spectroscopic methods including IR, HR-ESI-MS, and 1D- and 2D-NMR. All of these three steroidal saponins exhibited weak cytotoxicities against Hela and Hep2 cell lines.
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two new homoisoflavonoids from the Fibrous Roots of ophiopogon japonicus thunb ker gawl
Journal of Asian Natural Products Research, 2009Co-Authors: Changling Duan, Zhiyun Kang, Yong Jiang, Pengfei TuAbstract:Two new homoisoflavonoids ophiopogonone D (1) and ophiopogonanone G (2) were isolated from the Fibrous Roots of Ophiopogon japonicus. The structures of these two compounds were determined on the basis of spectroscopic means including HR-ESI-MS, 1D, and 2D NMR experiments. The cytotoxic activities of 1 and 2 against Hela and Hep2 cells are described.
Yunhee Kim - One of the best experts on this subject based on the ideXlab platform.
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comparative characterization of sweetpotato antioxidant genes from expressed sequence tags of dehydration treated Fibrous Roots under different abiotic stress conditions
Molecular Biology Reports, 2013Co-Authors: Yunhee Kim, Haengsoon Lee, Jae Cheol Jeong, Sangsoo KwakAbstract:Drought stress is one of the most adverse conditions for plant growth and productivity. The plant antioxidant system is an important defense mechanism and includes antioxidant enzymes and low-molecular weight antioxidants. Understanding the biochemical and molecular responses to drought is essential for improving plant resistance to water-limited conditions. Previously, we isolated and characterized expressed sequence tags (ESTs) from a full-length enriched cDNA library prepared from Fibrous Roots of sweetpotato subjected to dehydration stress (Kim et al. in BMB Rep 42:271–276, [5]). In this study, we isolated and characterized 11 sweetpotato antioxidant genes from sweetpotato EST library under various abiotic stress conditions, which included six intracellular CuZn superoxide dismutases (CuZnSOD), ascorbate peroxidase, catalase, glutathione peroxidase (GPX), glutathione-S-transferase, thioredoxin (TRX), and five extracellular peroxidase genes. The expression of almost all the antioxidant genes induced under dehydration treatments occurred in leaves, with the exception of extracellular swPB6, whereas some antioxidant genes showed increased expression levels in the Fibrous Roots, such as intracellular GPX, TRX, extracellular swPA4, and swPB7 genes. During various abiotic stress treatments in leaves, such as exposure to NaCl, cold, and abscisic acid, several intracellular antioxidant genes were strongly expressed compared with the expression of extracellular antioxidant genes. These results indicated that some intracellular antioxidant genes, especially swAPX1 and CuZnSOD, might be specifically involved in important defense mechanisms against oxidative stress induced by various abiotic stresses including dehydration in sweetpotato plants.
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sweetpotato late embryogenesis abundant 14 iblea14 gene influences lignification and increases osmotic and salt stress tolerance of transgenic calli
Planta, 2011Co-Authors: Yunhee Kim, Haengsoon Lee, Jaewook Bang, Cha Young Kim, Jae Cheol Jeong, Sungchul Park, Sangsoo KwakAbstract:Late embryogenesis abundant 14 (LEA14) cDNA was isolated from an EST library prepared from dehydration-treated Fibrous Roots of sweetpotato (Ipomoea batatas). Quantitative RT-PCR revealed a variety of different IbLEA14 expression patterns under various abiotic stress conditions. IbLEA14 expression was strongly induced by dehydration, NaCl and abscisic acid treatments in sweetpotato plants. Transgenic sweetpotato non-embryogenic calli harboring IbLEA14 overexpression or RNAi vectors under the control of CaMV 35S promoter were generated. Transgenic calli overexpressing IbLEA14 showed enhanced tolerance to drought and salt stress, whereas RNAi calli exhibited increased stress sensitivity. Under normal culture conditions, lignin contents increased in IbLEA14-overexpressing calli because of the increased expression of a variety of monolignol biosynthesis-related genes. Stress treatments elicited higher expression levels of the gene encoding cinnamyl alcohol dehydrogenase in IbLEA14-overexpressing lines than in control or RNAi lines. These results suggest that IbLEA14 might positively regulate the response to various stresses by enhancing lignification.
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characterization of full length enriched expressed sequence tags of dehydration treated white Fibrous Roots of sweetpotato
Journal of Biochemistry and Molecular Biology, 2009Co-Authors: Sunhyung Kim, Yunhee Kim, Wankeun Song, Haengsoon Lee, Sukyun Kwon, Inchul Lee, Sangsoo KwakAbstract:Sweetpotato (Ipomoea batatas (L). Lam.) is relatively tolerant to unfavorable growth conditions such as drought, yet has not been exploited to provide a better understanding of the molecular basis of drought stress tolerance. We obtained 983 high-quality expressed sequence tags of 100 bp or longer (average length of 700 bp) from cDNA libraries of detached white Fibrous root tissues by subjecting them to dehydration for 6 h. The 431 cDNAs were each assigned a function by alignment using the BLASTX algorithm. Among them, three genes associated with various abiotic stresses and nine genes not previously associated with drought stress were selected for expression pattern analysis through detailed reverse transcription-polymerase chain reaction. The direct and indirect relationships of the 12 genes with drought tolerance mechanisms were ascertained at different developmental stages and under various stress conditions.
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molecular cloning of peroxidase cdnas from dehydration treated Fibrous Roots of sweetpotato and their differential expression in response to stress
Journal of Biochemistry and Molecular Biology, 2008Co-Authors: Yunhee Kim, Kyoungsil Yang, Sunhwa Ryu, Wankeun Song, Sukyoon Kwon, Haengsoon Lee, Jaewook Bang, Cha Young Kim, Sangsoo KwakAbstract:Three peroxidase (POD) cDNAs were isolated from dehydration-treated Fibrous Roots of sweetpotato (Ipomoea batatas) plant via the screening of a cDNA library, and their expressions were assessed to characterize functions of each POD in relation to environmental stress. Three PODs were divided into two groups, designated the basic PODs (swpb4, swpb5) and the anionic PODs (swpa7), on the basis of the pI values of mature proteins. Fluorescence microscope analysis indicated that three PODs are secreted into the extracellular space. RT-PCR analysis revealed that POD genes have diverse expression patterns in a variety of plant tissues. Swpb4 was abundantly expressed in stem tissues, whereas the expression levels of swpb5 and swpa7 transcripts were high in Fibrous and thick pigmented Roots. Swpb4 and swpa7 showed abundant expression levels in suspension cultured cells. Three POD genes responded differently in the leaf and Fibrous Roots in response to a variety of stresses including dehydration, temperature stress, stress-associated chemicals, and pathogenic bacteria.
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molecular characterization of a cdna encoding dre binding transcription factor from dehydration treated Fibrous Roots of sweetpotato
Plant Physiology and Biochemistry, 2008Co-Authors: Yunhee Kim, Kyoungsil Yang, Sunhwa Ryu, Keeyeun Kim, Wankeun Song, Sukyoon Kwon, Haengsoon Lee, Jaewook BangAbstract:Abstract A new dehydration responsive element-binding (DREB) protein gene encoding for an AP2/EREBP-type transcription factor was isolated by screening of the cDNA library for dehydration-treated Fibrous Roots of sweetpotato (Ipomoea batatas). Its cDNA (referred to as swDREB1) fragment of 1206 bp was sequenced from, which a 257 amino acid residue protein was deduced with a predicted molecular weight of 28.17 kDa. A search of the protein BLAST database revealed that this protein can be classified as a typical member of a DREB subfamily. RT-PCR and northern analyses revealed diverse expression patterns of the swDREB1 gene in various tissues of intact sweetpotato plant, and in leaves and Fibrous Roots exposed to different stresses. The swDREB1 gene was highly expressed in stems and tuberous Roots. In Fibrous Roots, its mRNA accumulation profiles clearly showed strong expression under various abiotic stress conditions such as dehydration, chilling, salt, methyl viologen (MV), and cadmium (Cd) treatment, whereas it did not respond to abscisic acid (ABA) or copper (Cu) treatment. The above results indicate that swDREB1 may be involved in the process of the plant response to diverse abiotic stresses through an ABA-independent pathway.
Pengfei Tu - One of the best experts on this subject based on the ideXlab platform.
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spirostanol saponins from the Fibrous Roots of ophiopogon japonicus thunb ker gawl
Helvetica Chimica Acta, 2010Co-Authors: Changling Duan, Yujuan Li, Peng Li, Yong Jiang, Pengfei TuAbstract:Three new steroidal saponins, (25R)-ruscogenin-3-yl α-L-rhamnopyranosyl-(12)-[β-D-xylopyranosyl-(14)]-β-D-glucopyranoside (1), diosgenin-3-yl 2-O-acetyl-α-L-rhamnopyranosyl-(12)-[β-D-xylopyranosyl-(14)]-β-D-glucopyranoside (2), and pennogenin-3-yl 2-O-acetyl-α-L-rhamnopyranosyl-(12)-[β-D-xylopyranosyl-(14)]-β-D-glucopyranoside (3) were isolated from the Fibrous Roots of Ophiopogon japonicus (Thunb.) Ker-Gawl. Their structures were determined by spectroscopic methods including IR, HR-ESI-MS, and 1D- and 2D-NMR. All of these three steroidal saponins exhibited weak cytotoxicities against Hela and Hep2 cell lines.
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spirostanol saponins from the Fibrous Roots of ophiopogon japonicus thunb ker gawl
Helvetica Chimica Acta, 2010Co-Authors: Changling Duan, Yujuan Li, Peng Li, Yong Jiang, Pengfei TuAbstract:Three new steroidal saponins, (25R)-ruscogenin-3-yl α-L-rhamnopyranosyl-(12)-[β-D-xylopyranosyl-(14)]-β-D-glucopyranoside (1), diosgenin-3-yl 2-O-acetyl-α-L-rhamnopyranosyl-(12)-[β-D-xylopyranosyl-(14)]-β-D-glucopyranoside (2), and pennogenin-3-yl 2-O-acetyl-α-L-rhamnopyranosyl-(12)-[β-D-xylopyranosyl-(14)]-β-D-glucopyranoside (3) were isolated from the Fibrous Roots of Ophiopogon japonicus (Thunb.) Ker-Gawl. Their structures were determined by spectroscopic methods including IR, HR-ESI-MS, and 1D- and 2D-NMR. All of these three steroidal saponins exhibited weak cytotoxicities against Hela and Hep2 cell lines.
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two new homoisoflavonoids from the Fibrous Roots of ophiopogon japonicus thunb ker gawl
Journal of Asian Natural Products Research, 2009Co-Authors: Changling Duan, Zhiyun Kang, Yong Jiang, Pengfei TuAbstract:Two new homoisoflavonoids ophiopogonone D (1) and ophiopogonanone G (2) were isolated from the Fibrous Roots of Ophiopogon japonicus. The structures of these two compounds were determined on the basis of spectroscopic means including HR-ESI-MS, 1D, and 2D NMR experiments. The cytotoxic activities of 1 and 2 against Hela and Hep2 cells are described.
Sangsoo Kwak - One of the best experts on this subject based on the ideXlab platform.
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comparative characterization of sweetpotato antioxidant genes from expressed sequence tags of dehydration treated Fibrous Roots under different abiotic stress conditions
Molecular Biology Reports, 2013Co-Authors: Yunhee Kim, Haengsoon Lee, Jae Cheol Jeong, Sangsoo KwakAbstract:Drought stress is one of the most adverse conditions for plant growth and productivity. The plant antioxidant system is an important defense mechanism and includes antioxidant enzymes and low-molecular weight antioxidants. Understanding the biochemical and molecular responses to drought is essential for improving plant resistance to water-limited conditions. Previously, we isolated and characterized expressed sequence tags (ESTs) from a full-length enriched cDNA library prepared from Fibrous Roots of sweetpotato subjected to dehydration stress (Kim et al. in BMB Rep 42:271–276, [5]). In this study, we isolated and characterized 11 sweetpotato antioxidant genes from sweetpotato EST library under various abiotic stress conditions, which included six intracellular CuZn superoxide dismutases (CuZnSOD), ascorbate peroxidase, catalase, glutathione peroxidase (GPX), glutathione-S-transferase, thioredoxin (TRX), and five extracellular peroxidase genes. The expression of almost all the antioxidant genes induced under dehydration treatments occurred in leaves, with the exception of extracellular swPB6, whereas some antioxidant genes showed increased expression levels in the Fibrous Roots, such as intracellular GPX, TRX, extracellular swPA4, and swPB7 genes. During various abiotic stress treatments in leaves, such as exposure to NaCl, cold, and abscisic acid, several intracellular antioxidant genes were strongly expressed compared with the expression of extracellular antioxidant genes. These results indicated that some intracellular antioxidant genes, especially swAPX1 and CuZnSOD, might be specifically involved in important defense mechanisms against oxidative stress induced by various abiotic stresses including dehydration in sweetpotato plants.
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sweetpotato late embryogenesis abundant 14 iblea14 gene influences lignification and increases osmotic and salt stress tolerance of transgenic calli
Planta, 2011Co-Authors: Yunhee Kim, Haengsoon Lee, Jaewook Bang, Cha Young Kim, Jae Cheol Jeong, Sungchul Park, Sangsoo KwakAbstract:Late embryogenesis abundant 14 (LEA14) cDNA was isolated from an EST library prepared from dehydration-treated Fibrous Roots of sweetpotato (Ipomoea batatas). Quantitative RT-PCR revealed a variety of different IbLEA14 expression patterns under various abiotic stress conditions. IbLEA14 expression was strongly induced by dehydration, NaCl and abscisic acid treatments in sweetpotato plants. Transgenic sweetpotato non-embryogenic calli harboring IbLEA14 overexpression or RNAi vectors under the control of CaMV 35S promoter were generated. Transgenic calli overexpressing IbLEA14 showed enhanced tolerance to drought and salt stress, whereas RNAi calli exhibited increased stress sensitivity. Under normal culture conditions, lignin contents increased in IbLEA14-overexpressing calli because of the increased expression of a variety of monolignol biosynthesis-related genes. Stress treatments elicited higher expression levels of the gene encoding cinnamyl alcohol dehydrogenase in IbLEA14-overexpressing lines than in control or RNAi lines. These results suggest that IbLEA14 might positively regulate the response to various stresses by enhancing lignification.
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characterization of full length enriched expressed sequence tags of dehydration treated white Fibrous Roots of sweetpotato
Journal of Biochemistry and Molecular Biology, 2009Co-Authors: Sunhyung Kim, Yunhee Kim, Wankeun Song, Haengsoon Lee, Sukyun Kwon, Inchul Lee, Sangsoo KwakAbstract:Sweetpotato (Ipomoea batatas (L). Lam.) is relatively tolerant to unfavorable growth conditions such as drought, yet has not been exploited to provide a better understanding of the molecular basis of drought stress tolerance. We obtained 983 high-quality expressed sequence tags of 100 bp or longer (average length of 700 bp) from cDNA libraries of detached white Fibrous root tissues by subjecting them to dehydration for 6 h. The 431 cDNAs were each assigned a function by alignment using the BLASTX algorithm. Among them, three genes associated with various abiotic stresses and nine genes not previously associated with drought stress were selected for expression pattern analysis through detailed reverse transcription-polymerase chain reaction. The direct and indirect relationships of the 12 genes with drought tolerance mechanisms were ascertained at different developmental stages and under various stress conditions.
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molecular cloning of peroxidase cdnas from dehydration treated Fibrous Roots of sweetpotato and their differential expression in response to stress
Journal of Biochemistry and Molecular Biology, 2008Co-Authors: Yunhee Kim, Kyoungsil Yang, Sunhwa Ryu, Wankeun Song, Sukyoon Kwon, Haengsoon Lee, Jaewook Bang, Cha Young Kim, Sangsoo KwakAbstract:Three peroxidase (POD) cDNAs were isolated from dehydration-treated Fibrous Roots of sweetpotato (Ipomoea batatas) plant via the screening of a cDNA library, and their expressions were assessed to characterize functions of each POD in relation to environmental stress. Three PODs were divided into two groups, designated the basic PODs (swpb4, swpb5) and the anionic PODs (swpa7), on the basis of the pI values of mature proteins. Fluorescence microscope analysis indicated that three PODs are secreted into the extracellular space. RT-PCR analysis revealed that POD genes have diverse expression patterns in a variety of plant tissues. Swpb4 was abundantly expressed in stem tissues, whereas the expression levels of swpb5 and swpa7 transcripts were high in Fibrous and thick pigmented Roots. Swpb4 and swpa7 showed abundant expression levels in suspension cultured cells. Three POD genes responded differently in the leaf and Fibrous Roots in response to a variety of stresses including dehydration, temperature stress, stress-associated chemicals, and pathogenic bacteria.
Jaewook Bang - One of the best experts on this subject based on the ideXlab platform.
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sweetpotato late embryogenesis abundant 14 iblea14 gene influences lignification and increases osmotic and salt stress tolerance of transgenic calli
Planta, 2011Co-Authors: Yunhee Kim, Haengsoon Lee, Jaewook Bang, Cha Young Kim, Jae Cheol Jeong, Sungchul Park, Sangsoo KwakAbstract:Late embryogenesis abundant 14 (LEA14) cDNA was isolated from an EST library prepared from dehydration-treated Fibrous Roots of sweetpotato (Ipomoea batatas). Quantitative RT-PCR revealed a variety of different IbLEA14 expression patterns under various abiotic stress conditions. IbLEA14 expression was strongly induced by dehydration, NaCl and abscisic acid treatments in sweetpotato plants. Transgenic sweetpotato non-embryogenic calli harboring IbLEA14 overexpression or RNAi vectors under the control of CaMV 35S promoter were generated. Transgenic calli overexpressing IbLEA14 showed enhanced tolerance to drought and salt stress, whereas RNAi calli exhibited increased stress sensitivity. Under normal culture conditions, lignin contents increased in IbLEA14-overexpressing calli because of the increased expression of a variety of monolignol biosynthesis-related genes. Stress treatments elicited higher expression levels of the gene encoding cinnamyl alcohol dehydrogenase in IbLEA14-overexpressing lines than in control or RNAi lines. These results suggest that IbLEA14 might positively regulate the response to various stresses by enhancing lignification.
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molecular cloning of peroxidase cdnas from dehydration treated Fibrous Roots of sweetpotato and their differential expression in response to stress
Journal of Biochemistry and Molecular Biology, 2008Co-Authors: Yunhee Kim, Kyoungsil Yang, Sunhwa Ryu, Wankeun Song, Sukyoon Kwon, Haengsoon Lee, Jaewook Bang, Cha Young Kim, Sangsoo KwakAbstract:Three peroxidase (POD) cDNAs were isolated from dehydration-treated Fibrous Roots of sweetpotato (Ipomoea batatas) plant via the screening of a cDNA library, and their expressions were assessed to characterize functions of each POD in relation to environmental stress. Three PODs were divided into two groups, designated the basic PODs (swpb4, swpb5) and the anionic PODs (swpa7), on the basis of the pI values of mature proteins. Fluorescence microscope analysis indicated that three PODs are secreted into the extracellular space. RT-PCR analysis revealed that POD genes have diverse expression patterns in a variety of plant tissues. Swpb4 was abundantly expressed in stem tissues, whereas the expression levels of swpb5 and swpa7 transcripts were high in Fibrous and thick pigmented Roots. Swpb4 and swpa7 showed abundant expression levels in suspension cultured cells. Three POD genes responded differently in the leaf and Fibrous Roots in response to a variety of stresses including dehydration, temperature stress, stress-associated chemicals, and pathogenic bacteria.
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molecular characterization of a cdna encoding dre binding transcription factor from dehydration treated Fibrous Roots of sweetpotato
Plant Physiology and Biochemistry, 2008Co-Authors: Yunhee Kim, Kyoungsil Yang, Sunhwa Ryu, Keeyeun Kim, Wankeun Song, Sukyoon Kwon, Haengsoon Lee, Jaewook BangAbstract:Abstract A new dehydration responsive element-binding (DREB) protein gene encoding for an AP2/EREBP-type transcription factor was isolated by screening of the cDNA library for dehydration-treated Fibrous Roots of sweetpotato (Ipomoea batatas). Its cDNA (referred to as swDREB1) fragment of 1206 bp was sequenced from, which a 257 amino acid residue protein was deduced with a predicted molecular weight of 28.17 kDa. A search of the protein BLAST database revealed that this protein can be classified as a typical member of a DREB subfamily. RT-PCR and northern analyses revealed diverse expression patterns of the swDREB1 gene in various tissues of intact sweetpotato plant, and in leaves and Fibrous Roots exposed to different stresses. The swDREB1 gene was highly expressed in stems and tuberous Roots. In Fibrous Roots, its mRNA accumulation profiles clearly showed strong expression under various abiotic stress conditions such as dehydration, chilling, salt, methyl viologen (MV), and cadmium (Cd) treatment, whereas it did not respond to abscisic acid (ABA) or copper (Cu) treatment. The above results indicate that swDREB1 may be involved in the process of the plant response to diverse abiotic stresses through an ABA-independent pathway.