Molecular Characterization of FLOWERING LOCUS T-Like Genes of Apple (Malus × domestica Borkh.)
Identifieur interne : 001B74 ( Main/Merge ); précédent : 001B73; suivant : 001B75Molecular Characterization of FLOWERING LOCUS T-Like Genes of Apple (Malus × domestica Borkh.)
Auteurs : Nobuhiro Kotoda [Japon] ; Hidehiro Hayashi [Japon] ; Motoko Suzuki [Japon] ; Megumi Igarashi [Japon] ; Yoshimichi Hatsuyama [Japon] ; Shin-Ichiro Kidou [Japon] ; Tomohiro Igasaki [Japon] ; Mitsuru Nishiguchi [Japon] ; Kanako Yano [Japon] ; Tokurou Shimizu [Japon] ; Sae Takahashi [Japon] ; Hiroshi Iwanami [Japon] ; Shigeki Moriya [Japon] ; Kazuyuki Abe [Japon]Source :
- Plant and Cell Physiology [ 0032-0781 ] ; 2010-04.
Abstract
The two FLOWERING LOCUS T (FT)-like genes of apple (Malus × domestica Borkh.), MdFT1 and MdFT2, have been isolated and characterized. MdFT1 and MdFT2 were mapped, respectively, on distinct linkage groups (LGs) with partial homoeology, LG 12 and LG 4. The expression pattern of MdFT1 and MdFT2 differed in that MdFT1 was expressed mainly in apical buds of fruit-bearing shoots in the adult phase, with little expression in the juvenile tissues, whereas MdFT2 was expressed mainly in reproductive organs, including flower buds and young fruit. On the other hand, both genes had the potential to induce early flowering since transgenic Arabidopsis, which ectopically expressed MdFT1 or MdFT2, flowered earlier than wild-type plants. Furthermore, overexpression of MdFT1 conferred precocious flowering in apple, with altered expression of other endogenous genes, such as MdMADS12. These results suggest that MdFT1 could function to promote flowering by altering the expression of those genes and that, at least, other genes may play an important role as well in the regulation of flowering in apple. The long juvenile period of fruit trees prevents early cropping and efficient breeding. Our findings will be useful information to unveil the molecular mechanism of flowering and to develop methods to shorten the juvenile period in various fruit trees, including apple.
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DOI: 10.1093/pcp/pcq021
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T-Like Genes of Apple (Malus × domestica Borkh.)</title><author><name sortKey="Kotoda, Nobuhiro" sort="Kotoda, Nobuhiro" uniqKey="Kotoda N" first="Nobuhiro" last="Kotoda">Nobuhiro Kotoda</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Apple Breeding and Physiology Research Team, National Institute of Fruit Tree Science, 92-24 Nabe-yashiki, Shimo-kuriyagawa, Morioka</wicri:regionArea><wicri:noRegion>Morioka</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Present address: Fruit Genome Research Team, National Institute of Fruit Tree Science, 485-6 Okitsu-nakacho, Shimizu, Shizuoka</wicri:regionArea><wicri:noRegion>Shizuoka</wicri:noRegion></affiliation><affiliation wicri:level="1"><country wicri:rule="url">Japon</country></affiliation></author><author><name sortKey="Hayashi, Hidehiro" sort="Hayashi, Hidehiro" uniqKey="Hayashi H" first="Hidehiro" last="Hayashi">Hidehiro Hayashi</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Apple Breeding and Physiology Research Team, National Institute of Fruit Tree Science, 92-24 Nabe-yashiki, Shimo-kuriyagawa, Morioka</wicri:regionArea><wicri:noRegion>Morioka</wicri:noRegion></affiliation></author><author><name sortKey="Suzuki, Motoko" sort="Suzuki, Motoko" uniqKey="Suzuki M" first="Motoko" last="Suzuki">Motoko Suzuki</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Apple Breeding and Physiology Research Team, National Institute of Fruit Tree Science, 92-24 Nabe-yashiki, Shimo-kuriyagawa, Morioka</wicri:regionArea><wicri:noRegion>Morioka</wicri:noRegion></affiliation></author><author><name sortKey="Igarashi, Megumi" sort="Igarashi, Megumi" uniqKey="Igarashi M" first="Megumi" last="Igarashi">Megumi Igarashi</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Aomori Green Biocenter, Aomori Prefectural Agriculture and Forestry Research Center, 221-10 Yamaguchi, Nogi, Aomori</wicri:regionArea><wicri:noRegion>Aomori</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Present address: Hirosaki Industrial Research Institute, Aomori Prefectural Technological Research Center, 80 Fukuromachi, Hirosaki</wicri:regionArea><wicri:noRegion>Hirosaki</wicri:noRegion></affiliation></author><author><name sortKey="Hatsuyama, Yoshimichi" sort="Hatsuyama, Yoshimichi" uniqKey="Hatsuyama Y" first="Yoshimichi" last="Hatsuyama">Yoshimichi Hatsuyama</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Aomori Green Biocenter, Aomori Prefectural Agriculture and Forestry Research Center, 221-10 Yamaguchi, Nogi, Aomori</wicri:regionArea><wicri:noRegion>Aomori</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Present address: Hirosaki 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Igasaki</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Molecular and Cell Biology, Forestry and Forest Products Research Institute (FFPRI), 1 Matsunosato, Tsukuba</wicri:regionArea><wicri:noRegion>Tsukuba</wicri:noRegion></affiliation></author><author><name sortKey="Nishiguchi, Mitsuru" sort="Nishiguchi, Mitsuru" uniqKey="Nishiguchi M" first="Mitsuru" last="Nishiguchi">Mitsuru Nishiguchi</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Molecular and Cell Biology, Forestry and Forest Products Research Institute (FFPRI), 1 Matsunosato, Tsukuba</wicri:regionArea><wicri:noRegion>Tsukuba</wicri:noRegion></affiliation></author><author><name sortKey="Yano, Kanako" sort="Yano, Kanako" uniqKey="Yano K" first="Kanako" last="Yano">Kanako Yano</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Fruit Genome Research Team, National Institute of Fruit Tree Science, 485-6 Okitsu-nakacho, Shimizu, Shizuoka</wicri:regionArea><wicri:noRegion>Shizuoka</wicri:noRegion></affiliation></author><author><name sortKey="Shimizu, Tokurou" sort="Shimizu, Tokurou" uniqKey="Shimizu T" first="Tokurou" last="Shimizu">Tokurou Shimizu</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Fruit Genome Research Team, National Institute of Fruit Tree Science, 485-6 Okitsu-nakacho, Shimizu, Shizuoka</wicri:regionArea><wicri:noRegion>Shizuoka</wicri:noRegion></affiliation></author><author><name sortKey="Takahashi, Sae" sort="Takahashi, Sae" uniqKey="Takahashi S" first="Sae" last="Takahashi">Sae Takahashi</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Apple Breeding and Physiology Research Team, National Institute of Fruit Tree Science, 92-24 Nabe-yashiki, Shimo-kuriyagawa, Morioka</wicri:regionArea><wicri:noRegion>Morioka</wicri:noRegion></affiliation></author><author><name sortKey="Iwanami, Hiroshi" sort="Iwanami, Hiroshi" uniqKey="Iwanami H" first="Hiroshi" last="Iwanami">Hiroshi Iwanami</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Apple Breeding and Physiology Research Team, National Institute of Fruit Tree Science, 92-24 Nabe-yashiki, Shimo-kuriyagawa, Morioka</wicri:regionArea><wicri:noRegion>Morioka</wicri:noRegion></affiliation></author><author><name sortKey="Moriya, Shigeki" sort="Moriya, Shigeki" uniqKey="Moriya S" first="Shigeki" last="Moriya">Shigeki Moriya</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Apple Breeding and Physiology Research Team, National Institute of Fruit Tree Science, 92-24 Nabe-yashiki, Shimo-kuriyagawa, Morioka</wicri:regionArea><wicri:noRegion>Morioka</wicri:noRegion></affiliation></author><author><name sortKey="Abe, Kazuyuki" sort="Abe, Kazuyuki" uniqKey="Abe K" first="Kazuyuki" last="Abe">Kazuyuki Abe</name><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Apple Breeding and Physiology Research Team, National Institute of Fruit Tree Science, 92-24 Nabe-yashiki, Shimo-kuriyagawa, Morioka</wicri:regionArea><wicri:noRegion>Morioka</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Plant and Cell Physiology</title><idno type="ISSN">0032-0781</idno><idno type="eISSN">1471-9053</idno><imprint><publisher>Oxford University Press</publisher><date type="published" when="2010-04">2010-04</date><biblScope unit="volume">51</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="561">561</biblScope><biblScope unit="page" to="575">575</biblScope></imprint><idno type="ISSN">0032-0781</idno></series><idno type="istex">009823C0FA41BF5E0F6012FD394A5B2C30352EDE</idno><idno type="DOI">10.1093/pcp/pcq021</idno><idno type="ArticleID">pcq021</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0032-0781</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">The two FLOWERING LOCUS T (FT)-like genes of apple (Malus × domestica Borkh.), MdFT1 and MdFT2, have been isolated and characterized. MdFT1 and MdFT2 were mapped, respectively, on distinct linkage groups (LGs) with partial homoeology, LG 12 and LG 4. The expression pattern of MdFT1 and MdFT2 differed in that MdFT1 was expressed mainly in apical buds of fruit-bearing shoots in the adult phase, with little expression in the juvenile tissues, whereas MdFT2 was expressed mainly in reproductive organs, including flower buds and young fruit. On the other hand, both genes had the potential to induce early flowering since transgenic Arabidopsis, which ectopically expressed MdFT1 or MdFT2, flowered earlier than wild-type plants. Furthermore, overexpression of MdFT1 conferred precocious flowering in apple, with altered expression of other endogenous genes, such as MdMADS12. These results suggest that MdFT1 could function to promote flowering by altering the expression of those genes and that, at least, other genes may play an important role as well in the regulation of flowering in apple. The long juvenile period of fruit trees prevents early cropping and efficient breeding. Our findings will be useful information to unveil the molecular mechanism of flowering and to develop methods to shorten the juvenile period in various fruit trees, including apple.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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