The lycopene β-cyclase plays a significant role in provitamin A biosynthesis in wheat endosperm
Identifieur interne : 000410 ( Main/Exploration ); précédent : 000409; suivant : 000411The lycopene β-cyclase plays a significant role in provitamin A biosynthesis in wheat endosperm
Auteurs : Jian Zeng [République populaire de Chine] ; Cheng Wang [République populaire de Chine] ; Xi Chen [République populaire de Chine] ; Mingli Zang [République populaire de Chine] ; Cuihong Yuan [République populaire de Chine] ; Xiatian Wang [République populaire de Chine] ; Qiong Wang [République populaire de Chine] ; Miao Li [République populaire de Chine] ; Xiaoyan Li [République populaire de Chine] ; Ling Chen [République populaire de Chine] ; Kexiu Li [République populaire de Chine] ; Junli Chang [République populaire de Chine] ; Yuesheng Wang [République populaire de Chine] ; Guangxiao Yang [République populaire de Chine] ; Guangyuan He [République populaire de Chine]Source :
- BMC Plant Biology [ 1471-2229 ] ; 2015.
Abstract
Lycopene β-cyclase (LCYB) is a key enzyme catalyzing the biosynthesis of β-carotene, the main source of provitamin A. However, there is no documented research about this key cyclase gene’s function and relationship with β-carotene content in wheat. Therefore, the objectives of this study were to clone
In the present study, a lycopene β-cyclase gene, designated
Our results suggest that
The online version of this article (doi:10.1186/s12870-015-0514-5) contains supplementary material, which is available to authorized users.
Url:
DOI: 10.1186/s12870-015-0514-5
PubMed: 25943989
PubMed Central: 4433027
Affiliations:
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Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="He, Guangyuan" sort="He, Guangyuan" uniqKey="He G" first="Guangyuan" last="He">Guangyuan He</name><affiliation wicri:level="1"><nlm:aff id="Aff1">The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">25943989</idno><idno type="pmc">4433027</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4433027</idno><idno type="RBID">PMC:4433027</idno><idno type="doi">10.1186/s12870-015-0514-5</idno><date when="2015">2015</date><idno type="wicri:Area/Pmc/Corpus">000627</idno><idno type="wicri:Area/Pmc/Curation">000626</idno><idno 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China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Wang, Cheng" sort="Wang, Cheng" uniqKey="Wang C" first="Cheng" last="Wang">Cheng Wang</name><affiliation wicri:level="1"><nlm:aff id="Aff1">The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Chen, Xi" sort="Chen, Xi" uniqKey="Chen X" first="Xi" last="Chen">Xi Chen</name><affiliation wicri:level="1"><nlm:aff id="Aff1">The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Zang, Mingli" sort="Zang, Mingli" uniqKey="Zang M" first="Mingli" last="Zang">Mingli Zang</name><affiliation wicri:level="1"><nlm:aff id="Aff1">The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Yuan, Cuihong" sort="Yuan, Cuihong" uniqKey="Yuan C" first="Cuihong" last="Yuan">Cuihong Yuan</name><affiliation wicri:level="1"><nlm:aff id="Aff1">The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Wang, Xiatian" sort="Wang, Xiatian" uniqKey="Wang X" first="Xiatian" last="Wang">Xiatian Wang</name><affiliation wicri:level="1"><nlm:aff id="Aff1">The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Wang, Qiong" sort="Wang, Qiong" uniqKey="Wang Q" first="Qiong" last="Wang">Qiong Wang</name><affiliation wicri:level="1"><nlm:aff id="Aff1">The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Li, Miao" sort="Li, Miao" uniqKey="Li M" first="Miao" last="Li">Miao Li</name><affiliation wicri:level="1"><nlm:aff id="Aff1">The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Li, Xiaoyan" sort="Li, Xiaoyan" uniqKey="Li X" first="Xiaoyan" last="Li">Xiaoyan Li</name><affiliation wicri:level="1"><nlm:aff id="Aff1">The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Chen, Ling" sort="Chen, Ling" uniqKey="Chen L" first="Ling" last="Chen">Ling Chen</name><affiliation wicri:level="1"><nlm:aff id="Aff1">The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Li, Kexiu" sort="Li, Kexiu" uniqKey="Li K" first="Kexiu" last="Li">Kexiu Li</name><affiliation wicri:level="1"><nlm:aff id="Aff1">The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Chang, Junli" sort="Chang, Junli" uniqKey="Chang J" first="Junli" last="Chang">Junli Chang</name><affiliation wicri:level="1"><nlm:aff id="Aff1">The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Wang, Yuesheng" sort="Wang, Yuesheng" uniqKey="Wang Y" first="Yuesheng" last="Wang">Yuesheng Wang</name><affiliation wicri:level="1"><nlm:aff id="Aff1">The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Yang, Guangxiao" sort="Yang, Guangxiao" uniqKey="Yang G" first="Guangxiao" last="Yang">Guangxiao Yang</name><affiliation wicri:level="1"><nlm:aff id="Aff1">The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="He, Guangyuan" sort="He, Guangyuan" uniqKey="He G" first="Guangyuan" last="He">Guangyuan He</name><affiliation wicri:level="1"><nlm:aff id="Aff1">The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China</nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author></analytic><series><title level="j">BMC Plant Biology</title><idno type="eISSN">1471-2229</idno><imprint><date when="2015">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Background</title><p>Lycopene β-cyclase (LCYB) is a key enzyme catalyzing the biosynthesis of β-carotene, the main source of provitamin A. However, there is no documented research about this key cyclase gene’s function and relationship with β-carotene content in wheat. Therefore, the objectives of this study were to clone <italic>TaLCYB</italic> and characterize its function and relationship with β-carotene biosynthesis in wheat grains. We also aimed to obtain more information about the endogenous carotenoid biosynthetic pathway and thus provide experimental support for carotenoid metabolic engineering in wheat.</p></sec><sec><title>Results</title><p>In the present study, a lycopene β-cyclase gene, designated <italic>TaLCYB</italic>, was cloned from the hexaploid wheat cultivar Chinese Spring. The cyclization activity of the encoded protein was demonstrated by heterologous complementation analysis. The <italic>TaLCYB</italic> gene was expressed differentially in different tissues of wheat. Although <italic>TaLCYB</italic> had a higher expression level in the later stages of grain development, the β-carotene content still showed a decreasing tendency. The expression of <italic>TaLCYB</italic> in leaves was dramatically induced by strong light and the β-carotene content variation corresponded with changes of <italic>TaLCYB</italic> expression. A post-transcriptional gene silencing strategy was used to down-regulate the expression of <italic>TaLCYB</italic> in transgenic wheat, resulting in a decrease in the content of β-carotene and lutein, accompanied by the accumulation of lycopene to partly compensate for the total carotenoid content. In addition, changes in <italic>TaLCYB</italic> expression also affected the expression of several endogenous carotenogenic genes to varying degrees.</p></sec><sec><title>Conclusion</title><p>Our results suggest that <italic>TaLCYB</italic> is a genuine lycopene cyclase gene and plays a crucial role in β-carotene biosynthesis in wheat. Our attempt to silence it not only contributes to elucidating the mechanism of carotenoid accumulation in wheat but may also help in breeding wheat varieties with high provitamin A content through RNA interference (RNAi) to block specific carotenogenic genes in the wheat endosperm.</p></sec><sec><title>Electronic supplementary material</title><p>The online version of this article (doi:10.1186/s12870-015-0514-5) contains supplementary material, which is available to authorized users.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Bramley, Pm" uniqKey="Bramley P">PM Bramley</name></author></analytic></biblStruct><biblStruct></biblStruct><biblStruct><analytic><author><name sortKey="Fraser, Pd" uniqKey="Fraser P">PD Fraser</name></author><author><name sortKey="Bramley, Pm" uniqKey="Bramley P">PM Bramley</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Clagett Dame, M" uniqKey="Clagett Dame 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sort="Li, Kexiu" uniqKey="Li K" first="Kexiu" last="Li">Kexiu Li</name><name sortKey="Li, Miao" sort="Li, Miao" uniqKey="Li M" first="Miao" last="Li">Miao Li</name><name sortKey="Li, Xiaoyan" sort="Li, Xiaoyan" uniqKey="Li X" first="Xiaoyan" last="Li">Xiaoyan Li</name><name sortKey="Wang, Cheng" sort="Wang, Cheng" uniqKey="Wang C" first="Cheng" last="Wang">Cheng Wang</name><name sortKey="Wang, Qiong" sort="Wang, Qiong" uniqKey="Wang Q" first="Qiong" last="Wang">Qiong Wang</name><name sortKey="Wang, Xiatian" sort="Wang, Xiatian" uniqKey="Wang X" first="Xiatian" last="Wang">Xiatian Wang</name><name sortKey="Wang, Yuesheng" sort="Wang, Yuesheng" uniqKey="Wang Y" first="Yuesheng" last="Wang">Yuesheng Wang</name><name sortKey="Yang, Guangxiao" sort="Yang, Guangxiao" uniqKey="Yang G" first="Guangxiao" last="Yang">Guangxiao Yang</name><name sortKey="Yuan, Cuihong" sort="Yuan, Cuihong" uniqKey="Yuan C" first="Cuihong" last="Yuan">Cuihong Yuan</name><name sortKey="Zang, Mingli" sort="Zang, Mingli" uniqKey="Zang M" first="Mingli" last="Zang">Mingli Zang</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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