Characterization and expression analysis of waxy alleles in barley accessions

Granule Bound Starch Synthase I (GBSS I) encoded by the waxy gene plays an important role in accumulating amylose during the development of starch granules in barley. In this study, we isolated and characterized waxy alleles of three waxy (GSHO 908, GSHO 1828 and NA 40) and two non-waxy barley acces...

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Veröffentlicht in:Genetica 2013-06, Vol.141 (4-6), p.227-238
Hauptverfasser: Ma, Jian, Jiang, Qian-Tao, Zhao, Quan-Zhi, Zhao, Shan, Lan, Xiu-Jin, Dai, Shou-Fen, Lu, Zhen-Xiang, Liu, Chunji, Wei, Yu-Ming, Zheng, You-Liang
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container_issue 4-6
container_start_page 227
container_title Genetica
container_volume 141
creator Ma, Jian
Jiang, Qian-Tao
Zhao, Quan-Zhi
Zhao, Shan
Lan, Xiu-Jin
Dai, Shou-Fen
Lu, Zhen-Xiang
Liu, Chunji
Wei, Yu-Ming
Zheng, You-Liang
description Granule Bound Starch Synthase I (GBSS I) encoded by the waxy gene plays an important role in accumulating amylose during the development of starch granules in barley. In this study, we isolated and characterized waxy alleles of three waxy (GSHO 908, GSHO 1828 and NA 40) and two non-waxy barley accessions (PI 483237 and CIho 15773), estimated the expression patterns of waxy genes via Real-time quantitative PCR (RT-qPCR), investigated promoter activity by analyzing promoter-GUS expression, and examined possible effects of waxy alleles on starch granule morphology in barley accessions by scanning electron microscopy (SEM). A 193-bp insertion in intron 1, a 15-bp insertion in the coding region, and some single nucleotide polymorphic sites were detected in the waxy barley accessions. In addition, a 397-bp deletion containing the TATA box, transcription starting point, exon 1 and partial intron 1 were also identified in the waxy barley accessions. RT-qPCR analysis showed that waxy accessions had lower waxy expression levels than those of non-waxy accessions. Transient expression assays showed that GUS activity driven by the 1,029-bp promoter of the non-waxy accessions was stronger than that driven by the 822-bp promoter of the waxy accessions. SEM revealed no apparent differences of starch granule morphology between waxy and non-waxy accessions. Our results showed that the 397-bp deletion identified in the waxy barley accessions is likely responsible for the reduction of waxy transcript, leading to lower concentrations of GBSS I protein thus lower amylose content.
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Transient expression assays showed that GUS activity driven by the 1,029-bp promoter of the non-waxy accessions was stronger than that driven by the 822-bp promoter of the waxy accessions. SEM revealed no apparent differences of starch granule morphology between waxy and non-waxy accessions. Our results showed that the 397-bp deletion identified in the waxy barley accessions is likely responsible for the reduction of waxy transcript, leading to lower concentrations of GBSS I protein thus lower amylose content.</description><identifier>ISSN: 0016-6707</identifier><identifier>EISSN: 1573-6857</identifier><identifier>DOI: 10.1007/s10709-013-9721-x</identifier><identifier>PMID: 23690246</identifier><language>eng</language><publisher>Dordrecht: Springer-Verlag</publisher><subject>Alleles ; Amylose - chemistry ; Animal Genetics and Genomics ; Barley ; Biomedical and Life Sciences ; Carbohydrate Metabolism - genetics ; Evolutionary Biology ; Gene Expression ; Gene Order ; Genes, Plant ; Hordeum - genetics ; Hordeum - metabolism ; Hordeum vulgare ; Human Genetics ; Life Sciences ; Microbial Genetics and Genomics ; Nucleotide Motifs ; Plant Genetics and Genomics ; polymerase chain reaction ; Polymorphism, Genetic ; Promoter Regions, Genetic ; scanning electron microscopy ; Sequence Deletion ; single nucleotide polymorphism ; Starch ; Starch - ultrastructure ; starch granules ; starch synthase ; Starch Synthase - chemistry ; Starch Synthase - genetics ; TATA box ; Waxes</subject><ispartof>Genetica, 2013-06, Vol.141 (4-6), p.227-238</ispartof><rights>Springer Science+Business Media Dordrecht 2013</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c429t-136c798045daec9a9eacc5615d1a529fa3aa7a6df83f2c29866d973ef3940a413</citedby><cites>FETCH-LOGICAL-c429t-136c798045daec9a9eacc5615d1a529fa3aa7a6df83f2c29866d973ef3940a413</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10709-013-9721-x$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10709-013-9721-x$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27923,27924,41487,42556,51318</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23690246$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Ma, Jian</creatorcontrib><creatorcontrib>Jiang, Qian-Tao</creatorcontrib><creatorcontrib>Zhao, Quan-Zhi</creatorcontrib><creatorcontrib>Zhao, Shan</creatorcontrib><creatorcontrib>Lan, Xiu-Jin</creatorcontrib><creatorcontrib>Dai, Shou-Fen</creatorcontrib><creatorcontrib>Lu, Zhen-Xiang</creatorcontrib><creatorcontrib>Liu, Chunji</creatorcontrib><creatorcontrib>Wei, Yu-Ming</creatorcontrib><creatorcontrib>Zheng, You-Liang</creatorcontrib><title>Characterization and expression analysis of waxy alleles in barley accessions</title><title>Genetica</title><addtitle>Genetica</addtitle><addtitle>Genetica</addtitle><description>Granule Bound Starch Synthase I (GBSS I) encoded by the waxy gene plays an important role in accumulating amylose during the development of starch granules in barley. In this study, we isolated and characterized waxy alleles of three waxy (GSHO 908, GSHO 1828 and NA 40) and two non-waxy barley accessions (PI 483237 and CIho 15773), estimated the expression patterns of waxy genes via Real-time quantitative PCR (RT-qPCR), investigated promoter activity by analyzing promoter-GUS expression, and examined possible effects of waxy alleles on starch granule morphology in barley accessions by scanning electron microscopy (SEM). A 193-bp insertion in intron 1, a 15-bp insertion in the coding region, and some single nucleotide polymorphic sites were detected in the waxy barley accessions. In addition, a 397-bp deletion containing the TATA box, transcription starting point, exon 1 and partial intron 1 were also identified in the waxy barley accessions. RT-qPCR analysis showed that waxy accessions had lower waxy expression levels than those of non-waxy accessions. Transient expression assays showed that GUS activity driven by the 1,029-bp promoter of the non-waxy accessions was stronger than that driven by the 822-bp promoter of the waxy accessions. SEM revealed no apparent differences of starch granule morphology between waxy and non-waxy accessions. 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In this study, we isolated and characterized waxy alleles of three waxy (GSHO 908, GSHO 1828 and NA 40) and two non-waxy barley accessions (PI 483237 and CIho 15773), estimated the expression patterns of waxy genes via Real-time quantitative PCR (RT-qPCR), investigated promoter activity by analyzing promoter-GUS expression, and examined possible effects of waxy alleles on starch granule morphology in barley accessions by scanning electron microscopy (SEM). A 193-bp insertion in intron 1, a 15-bp insertion in the coding region, and some single nucleotide polymorphic sites were detected in the waxy barley accessions. In addition, a 397-bp deletion containing the TATA box, transcription starting point, exon 1 and partial intron 1 were also identified in the waxy barley accessions. RT-qPCR analysis showed that waxy accessions had lower waxy expression levels than those of non-waxy accessions. Transient expression assays showed that GUS activity driven by the 1,029-bp promoter of the non-waxy accessions was stronger than that driven by the 822-bp promoter of the waxy accessions. SEM revealed no apparent differences of starch granule morphology between waxy and non-waxy accessions. Our results showed that the 397-bp deletion identified in the waxy barley accessions is likely responsible for the reduction of waxy transcript, leading to lower concentrations of GBSS I protein thus lower amylose content.</abstract><cop>Dordrecht</cop><pub>Springer-Verlag</pub><pmid>23690246</pmid><doi>10.1007/s10709-013-9721-x</doi><tpages>12</tpages></addata></record>
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subjects Alleles
Amylose - chemistry
Animal Genetics and Genomics
Barley
Biomedical and Life Sciences
Carbohydrate Metabolism - genetics
Evolutionary Biology
Gene Expression
Gene Order
Genes, Plant
Hordeum - genetics
Hordeum - metabolism
Hordeum vulgare
Human Genetics
Life Sciences
Microbial Genetics and Genomics
Nucleotide Motifs
Plant Genetics and Genomics
polymerase chain reaction
Polymorphism, Genetic
Promoter Regions, Genetic
scanning electron microscopy
Sequence Deletion
single nucleotide polymorphism
Starch
Starch - ultrastructure
starch granules
starch synthase
Starch Synthase - chemistry
Starch Synthase - genetics
TATA box
Waxes
title Characterization and expression analysis of waxy alleles in barley accessions
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