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Molecular cloning and characterisation of SlAGO family in tomato.

BACKGROUNDAGO (Argonaute) protein participates in plant developmental processes and virus defense as a core element of transcriptional regulator or/and post-transcriptional regulator in RNA induced silencing complex (RISC), which is guided by small RNAs to repress target genes expression. Previously... Full description

Journal Title: BMC plant biology September 8, 2013, Vol.13, p.126
Main Author: Xian, Zhiqiang
Other Authors: Yang, Yingwu , Huang, Wei , Tang, Ning , Wang, Xinyu , Li, Zhengguo
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1471-2229 ; DOI: 1471-2229 ; DOI: 10.1186/1471-2229-13-126
Link: http://search.proquest.com/docview/1459152343/?pq-origsite=primo
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title: Molecular cloning and characterisation of SlAGO family in tomato.
format: Article
creator:
  • Xian, Zhiqiang
  • Yang, Yingwu
  • Huang, Wei
  • Tang, Ning
  • Wang, Xinyu
  • Li, Zhengguo
subjects:
  • Amino Acid Sequence–Genetics
  • Cloning, Molecular–Metabolism
  • Gene Expression Regulation, Plant–Chemistry
  • Lycopersicon Esculentum–Classification
  • Molecular Sequence Data–Genetics
  • Phylogeny–Metabolism
  • Plant Proteins–Metabolism
  • Sequence Homology, Amino Acid–Metabolism
  • Plant Proteins
ispartof: BMC plant biology, September 8, 2013, Vol.13, p.126
description: BACKGROUNDAGO (Argonaute) protein participates in plant developmental processes and virus defense as a core element of transcriptional regulator or/and post-transcriptional regulator in RNA induced silencing complex (RISC), which is guided by small RNAs to repress target genes expression. Previously, it was revealed that 15 putative AGO genes in tomato genome. RESULTSIn present study, out of 15 detected SlAGO genes, only SlAGO4C and SlAGO15 couldn't be detected in roots, stems, leaves, buds, flowers and fruit of tomato by 30 cycles of PCR. SlAGO7 could be detected in early stage of fruit (-2 dpa, 0 dpa and 4 dpa), but it was significantly down-regulated in fruit collected on the 6 days post anthesis. Moreover, SlAGO5 could only be detected in reproductive tissues and SlAGO4D was specifically detected in fruit. According to blast result with miRNA database, three SlAGO genes harbored complementary sequences to miR168 (SlAGO1A and SlAGO1B) or miR403 (SlAGO2A). 5' RACE (Rapid amplification of cDNA ends) mapping was used to detect the 3' cleavage products of SlAGO mRNAs. In addition, subcellular localization of SlAGO proteins was detected. Our results showed that most SlAGO proteins localized to nucleus and cytoplasm. Importantly, nuclear membrane localization of AGO proteins was observed. Furthermore, mutated miR168 complementary site of SlAGO1A resulted in expanded localization of SlAGO1A, indicating that miR168 regulated localization of SlAGO1A. CONCLUSIONSOur results contribute to demonstration of potential roles of these newly isolated AGO family in tomato developmental processes and proved the conserved relationships between AGO genes and miRNAs in tomato, which might play important roles in tomato development and virus defense.
language: eng
source:
identifier: E-ISSN: 1471-2229 ; DOI: 1471-2229 ; DOI: 10.1186/1471-2229-13-126
fulltext: fulltext
issn:
  • 14712229
  • 1471-2229
url: Link


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titleMolecular cloning and characterisation of SlAGO family in tomato.
creatorXian, Zhiqiang ; Yang, Yingwu ; Huang, Wei ; Tang, Ning ; Wang, Xinyu ; Li, Zhengguo
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ispartofBMC plant biology, September 8, 2013, Vol.13, p.126
identifier
subjectAmino Acid Sequence–Genetics ; Cloning, Molecular–Metabolism ; Gene Expression Regulation, Plant–Chemistry ; Lycopersicon Esculentum–Classification ; Molecular Sequence Data–Genetics ; Phylogeny–Metabolism ; Plant Proteins–Metabolism ; Sequence Homology, Amino Acid–Metabolism ; Plant Proteins
descriptionBACKGROUNDAGO (Argonaute) protein participates in plant developmental processes and virus defense as a core element of transcriptional regulator or/and post-transcriptional regulator in RNA induced silencing complex (RISC), which is guided by small RNAs to repress target genes expression. Previously, it was revealed that 15 putative AGO genes in tomato genome. RESULTSIn present study, out of 15 detected SlAGO genes, only SlAGO4C and SlAGO15 couldn't be detected in roots, stems, leaves, buds, flowers and fruit of tomato by 30 cycles of PCR. SlAGO7 could be detected in early stage of fruit (-2 dpa, 0 dpa and 4 dpa), but it was significantly down-regulated in fruit collected on the 6 days post anthesis. Moreover, SlAGO5 could only be detected in reproductive tissues and SlAGO4D was specifically detected in fruit. According to blast result with miRNA database, three SlAGO genes harbored complementary sequences to miR168 (SlAGO1A and SlAGO1B) or miR403 (SlAGO2A). 5' RACE (Rapid amplification of cDNA ends) mapping was used to detect the 3' cleavage products of SlAGO mRNAs. In addition, subcellular localization of SlAGO proteins was detected. Our results showed that most SlAGO proteins localized to nucleus and cytoplasm. Importantly, nuclear membrane localization of AGO proteins was observed. Furthermore, mutated miR168 complementary site of SlAGO1A resulted in expanded localization of SlAGO1A, indicating that miR168 regulated localization of SlAGO1A. CONCLUSIONSOur results contribute to demonstration of potential roles of these newly isolated AGO family in tomato developmental processes and proved the conserved relationships between AGO genes and miRNAs in tomato, which might play important roles in tomato development and virus defense.
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descriptionBACKGROUNDAGO (Argonaute) protein participates in plant developmental processes and virus defense as a core element of transcriptional regulator or/and post-transcriptional regulator in RNA induced silencing complex (RISC), which is guided by small RNAs to repress target genes expression. Previously, it was revealed that 15 putative AGO genes in tomato genome. RESULTSIn present study, out of 15 detected SlAGO genes, only SlAGO4C and SlAGO15 couldn't be detected in roots, stems, leaves, buds, flowers and fruit of tomato by 30 cycles of PCR. SlAGO7 could be detected in early stage of fruit (-2 dpa, 0 dpa and 4 dpa), but it was significantly down-regulated in fruit collected on the 6 days post anthesis. Moreover, SlAGO5 could only be detected in reproductive tissues and SlAGO4D was specifically detected in fruit. According to blast result with miRNA database, three SlAGO genes harbored complementary sequences to miR168 (SlAGO1A and SlAGO1B) or miR403 (SlAGO2A). 5' RACE (Rapid amplification of cDNA ends) mapping was used to detect the 3' cleavage products of SlAGO mRNAs. In addition, subcellular localization of SlAGO proteins was detected. Our results showed that most SlAGO proteins localized to nucleus and cytoplasm. Importantly, nuclear membrane localization of AGO proteins was observed. Furthermore, mutated miR168 complementary site of SlAGO1A resulted in expanded localization of SlAGO1A, indicating that miR168 regulated localization of SlAGO1A. CONCLUSIONSOur results contribute to demonstration of potential roles of these newly isolated AGO family in tomato developmental processes and proved the conserved relationships between AGO genes and miRNAs in tomato, which might play important roles in tomato development and virus defense.
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abstractBACKGROUNDAGO (Argonaute) protein participates in plant developmental processes and virus defense as a core element of transcriptional regulator or/and post-transcriptional regulator in RNA induced silencing complex (RISC), which is guided by small RNAs to repress target genes expression. Previously, it was revealed that 15 putative AGO genes in tomato genome. RESULTSIn present study, out of 15 detected SlAGO genes, only SlAGO4C and SlAGO15 couldn't be detected in roots, stems, leaves, buds, flowers and fruit of tomato by 30 cycles of PCR. SlAGO7 could be detected in early stage of fruit (-2 dpa, 0 dpa and 4 dpa), but it was significantly down-regulated in fruit collected on the 6 days post anthesis. Moreover, SlAGO5 could only be detected in reproductive tissues and SlAGO4D was specifically detected in fruit. According to blast result with miRNA database, three SlAGO genes harbored complementary sequences to miR168 (SlAGO1A and SlAGO1B) or miR403 (SlAGO2A). 5' RACE (Rapid amplification of cDNA ends) mapping was used to detect the 3' cleavage products of SlAGO mRNAs. In addition, subcellular localization of SlAGO proteins was detected. Our results showed that most SlAGO proteins localized to nucleus and cytoplasm. Importantly, nuclear membrane localization of AGO proteins was observed. Furthermore, mutated miR168 complementary site of SlAGO1A resulted in expanded localization of SlAGO1A, indicating that miR168 regulated localization of SlAGO1A. CONCLUSIONSOur results contribute to demonstration of potential roles of these newly isolated AGO family in tomato developmental processes and proved the conserved relationships between AGO genes and miRNAs in tomato, which might play important roles in tomato development and virus defense.
doi10.1186/1471-2229-13-126
urlhttp://search.proquest.com/docview/1459152343/
issue1
date2013-09-08