Spearmint R2R3‐MYB transcription factor MsMYB negatively regulates monoterpene production and suppresses the expression of geranyl diphosphate synthase large subunit (MsGPPS.LSU)

Summary Many aromatic plants, such as spearmint, produce valuable essential oils in specialized structures called peltate glandular trichomes (PGTs). Understanding the regulatory mechanisms behind the production of these important secondary metabolites will help design new approaches to engineer the...

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Veröffentlicht in:Plant biotechnology journal 2017-09, Vol.15 (9), p.1105-1119
Hauptverfasser: Reddy, Vaishnavi Amarr, Wang, Qian, Dhar, Niha, Kumar, Nadimuthu, Venkatesh, Prasanna Nori, Rajan, Chakravarthy, Panicker, Deepa, Sridhar, Vishweshwaran, Mao, Hui‐Zhu, Sarojam, Rajani
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container_end_page 1119
container_issue 9
container_start_page 1105
container_title Plant biotechnology journal
container_volume 15
creator Reddy, Vaishnavi Amarr
Wang, Qian
Dhar, Niha
Kumar, Nadimuthu
Venkatesh, Prasanna Nori
Rajan, Chakravarthy
Panicker, Deepa
Sridhar, Vishweshwaran
Mao, Hui‐Zhu
Sarojam, Rajani
description Summary Many aromatic plants, such as spearmint, produce valuable essential oils in specialized structures called peltate glandular trichomes (PGTs). Understanding the regulatory mechanisms behind the production of these important secondary metabolites will help design new approaches to engineer them. Here, we identified a PGT‐specific R2R3‐MYB gene, MsMYB, from comparative RNA‐Seq data of spearmint and functionally characterized it. Analysis of MsMYB‐RNAi transgenic lines showed increased levels of monoterpenes, and MsMYB‐overexpressing lines exhibited decreased levels of monoterpenes. These results suggest that MsMYB is a novel negative regulator of monoterpene biosynthesis. Ectopic expression of MsMYB, in sweet basil and tobacco, perturbed sesquiterpene‐ and diterpene‐derived metabolite production. In addition, we found that MsMYB binds to cis‐elements of MsGPPS.LSU and suppresses its expression. Phylogenetic analysis placed MsMYB in subgroup 7 of R2R3‐MYBs whose members govern phenylpropanoid pathway and are regulated by miR858. Analysis of transgenic lines showed that MsMYB is more specific to terpene biosynthesis as it did not affect metabolites derived from phenylpropanoid pathway. Further, our results indicate that MsMYB is probably not regulated by miR858, like other members of subgroup 7.
doi_str_mv 10.1111/pbi.12701
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Understanding the regulatory mechanisms behind the production of these important secondary metabolites will help design new approaches to engineer them. Here, we identified a PGT‐specific R2R3‐MYB gene, MsMYB, from comparative RNA‐Seq data of spearmint and functionally characterized it. Analysis of MsMYB‐RNAi transgenic lines showed increased levels of monoterpenes, and MsMYB‐overexpressing lines exhibited decreased levels of monoterpenes. These results suggest that MsMYB is a novel negative regulator of monoterpene biosynthesis. Ectopic expression of MsMYB, in sweet basil and tobacco, perturbed sesquiterpene‐ and diterpene‐derived metabolite production. In addition, we found that MsMYB binds to cis‐elements of MsGPPS.LSU and suppresses its expression. Phylogenetic analysis placed MsMYB in subgroup 7 of R2R3‐MYBs whose members govern phenylpropanoid pathway and are regulated by miR858. 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Understanding the regulatory mechanisms behind the production of these important secondary metabolites will help design new approaches to engineer them. Here, we identified a PGT‐specific R2R3‐MYB gene, MsMYB, from comparative RNA‐Seq data of spearmint and functionally characterized it. Analysis of MsMYB‐RNAi transgenic lines showed increased levels of monoterpenes, and MsMYB‐overexpressing lines exhibited decreased levels of monoterpenes. These results suggest that MsMYB is a novel negative regulator of monoterpene biosynthesis. Ectopic expression of MsMYB, in sweet basil and tobacco, perturbed sesquiterpene‐ and diterpene‐derived metabolite production. In addition, we found that MsMYB binds to cis‐elements of MsGPPS.LSU and suppresses its expression. Phylogenetic analysis placed MsMYB in subgroup 7 of R2R3‐MYBs whose members govern phenylpropanoid pathway and are regulated by miR858. 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Wang, Qian ; Dhar, Niha ; Kumar, Nadimuthu ; Venkatesh, Prasanna Nori ; Rajan, Chakravarthy ; Panicker, Deepa ; Sridhar, Vishweshwaran ; Mao, Hui‐Zhu ; Sarojam, Rajani</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-g4411-9f47be0d921de6602a426fe1fcd15ac9263764fdb9a62817bff67ec9a9ead61b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Amino Acid Sequence</topic><topic>Base Sequence</topic><topic>Biosynthesis</topic><topic>Comparative analysis</topic><topic>Design engineering</topic><topic>Diphosphates - metabolism</topic><topic>Diterpenes - metabolism</topic><topic>Ectopic expression</topic><topic>essential oil crops</topic><topic>Essential oils</topic><topic>Gene Expression</topic><topic>Gene Expression Regulation, Plant</topic><topic>gene overexpression</topic><topic>genes</topic><topic>Genetic engineering</topic><topic>genetically modified organisms</topic><topic>Geranyltranstransferase - genetics</topic><topic>Geranyltranstransferase - metabolism</topic><topic>GPPS</topic><topic>Mentha spicata</topic><topic>Mentha spicata - cytology</topic><topic>Mentha spicata - genetics</topic><topic>Mentha spicata - metabolism</topic><topic>Metabolites</topic><topic>Monoterpenes</topic><topic>Monoterpenes - metabolism</topic><topic>monoterpenoids</topic><topic>MYB gene</topic><topic>Nicotiana - cytology</topic><topic>Nicotiana - genetics</topic><topic>Nicotiana - metabolism</topic><topic>Ocimum basilicum</topic><topic>Ocimum basilicum - cytology</topic><topic>Ocimum basilicum - genetics</topic><topic>Ocimum basilicum - metabolism</topic><topic>Oils, Volatile - metabolism</topic><topic>Phylogeny</topic><topic>Physiological aspects</topic><topic>Plant Leaves - genetics</topic><topic>Plant Leaves - metabolism</topic><topic>Plant metabolites</topic><topic>Plant Oils - metabolism</topic><topic>Plant Proteins - genetics</topic><topic>Plant Proteins - metabolism</topic><topic>Plants</topic><topic>Plants (botany)</topic><topic>Plants, Genetically Modified</topic><topic>R2R3‐MYB</topic><topic>Regulatory mechanisms (biology)</topic><topic>Ribonucleic acid</topic><topic>RNA</topic><topic>RNA-mediated interference</topic><topic>Secondary Metabolism</topic><topic>Secondary metabolites</topic><topic>sequence analysis</topic><topic>Sesquiterpenes - metabolism</topic><topic>spearmint</topic><topic>terpene</topic><topic>Tobacco</topic><topic>transcription factor</topic><topic>transcription factors</topic><topic>Transcription Factors - genetics</topic><topic>Transcription Factors - metabolism</topic><topic>Trichomes</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Reddy, Vaishnavi Amarr</creatorcontrib><creatorcontrib>Wang, Qian</creatorcontrib><creatorcontrib>Dhar, Niha</creatorcontrib><creatorcontrib>Kumar, Nadimuthu</creatorcontrib><creatorcontrib>Venkatesh, Prasanna Nori</creatorcontrib><creatorcontrib>Rajan, Chakravarthy</creatorcontrib><creatorcontrib>Panicker, Deepa</creatorcontrib><creatorcontrib>Sridhar, Vishweshwaran</creatorcontrib><creatorcontrib>Mao, Hui‐Zhu</creatorcontrib><creatorcontrib>Sarojam, Rajani</creatorcontrib><collection>Wiley Online Library Open Access</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>Biotechnology Research Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Materials Science &amp; 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Understanding the regulatory mechanisms behind the production of these important secondary metabolites will help design new approaches to engineer them. Here, we identified a PGT‐specific R2R3‐MYB gene, MsMYB, from comparative RNA‐Seq data of spearmint and functionally characterized it. Analysis of MsMYB‐RNAi transgenic lines showed increased levels of monoterpenes, and MsMYB‐overexpressing lines exhibited decreased levels of monoterpenes. These results suggest that MsMYB is a novel negative regulator of monoterpene biosynthesis. Ectopic expression of MsMYB, in sweet basil and tobacco, perturbed sesquiterpene‐ and diterpene‐derived metabolite production. In addition, we found that MsMYB binds to cis‐elements of MsGPPS.LSU and suppresses its expression. Phylogenetic analysis placed MsMYB in subgroup 7 of R2R3‐MYBs whose members govern phenylpropanoid pathway and are regulated by miR858. Analysis of transgenic lines showed that MsMYB is more specific to terpene biosynthesis as it did not affect metabolites derived from phenylpropanoid pathway. Further, our results indicate that MsMYB is probably not regulated by miR858, like other members of subgroup 7.</abstract><cop>England</cop><pub>John Wiley &amp; Sons, Inc</pub><pmid>28160379</pmid><doi>10.1111/pbi.12701</doi><tpages>15</tpages><orcidid>https://orcid.org/0000-0003-0553-272X</orcidid><oa>free_for_read</oa></addata></record>
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subjects Amino Acid Sequence
Base Sequence
Biosynthesis
Comparative analysis
Design engineering
Diphosphates - metabolism
Diterpenes - metabolism
Ectopic expression
essential oil crops
Essential oils
Gene Expression
Gene Expression Regulation, Plant
gene overexpression
genes
Genetic engineering
genetically modified organisms
Geranyltranstransferase - genetics
Geranyltranstransferase - metabolism
GPPS
Mentha spicata
Mentha spicata - cytology
Mentha spicata - genetics
Mentha spicata - metabolism
Metabolites
Monoterpenes
Monoterpenes - metabolism
monoterpenoids
MYB gene
Nicotiana - cytology
Nicotiana - genetics
Nicotiana - metabolism
Ocimum basilicum
Ocimum basilicum - cytology
Ocimum basilicum - genetics
Ocimum basilicum - metabolism
Oils, Volatile - metabolism
Phylogeny
Physiological aspects
Plant Leaves - genetics
Plant Leaves - metabolism
Plant metabolites
Plant Oils - metabolism
Plant Proteins - genetics
Plant Proteins - metabolism
Plants
Plants (botany)
Plants, Genetically Modified
R2R3‐MYB
Regulatory mechanisms (biology)
Ribonucleic acid
RNA
RNA-mediated interference
Secondary Metabolism
Secondary metabolites
sequence analysis
Sesquiterpenes - metabolism
spearmint
terpene
Tobacco
transcription factor
transcription factors
Transcription Factors - genetics
Transcription Factors - metabolism
Trichomes
title Spearmint R2R3‐MYB transcription factor MsMYB negatively regulates monoterpene production and suppresses the expression of geranyl diphosphate synthase large subunit (MsGPPS.LSU)
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-05T11%3A49%3A36IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-gale_pubme&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Spearmint%20R2R3%E2%80%90MYB%20transcription%20factor%20MsMYB%20negatively%20regulates%20monoterpene%20production%20and%20suppresses%20the%20expression%20of%20geranyl%20diphosphate%20synthase%20large%20subunit%20(MsGPPS.LSU)&rft.jtitle=Plant%20biotechnology%20journal&rft.au=Reddy,%20Vaishnavi%20Amarr&rft.date=2017-09&rft.volume=15&rft.issue=9&rft.spage=1105&rft.epage=1119&rft.pages=1105-1119&rft.issn=1467-7644&rft.eissn=1467-7652&rft_id=info:doi/10.1111/pbi.12701&rft_dat=%3Cgale_pubme%3EA733243661%3C/gale_pubme%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1927660038&rft_id=info:pmid/28160379&rft_galeid=A733243661&rfr_iscdi=true