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| 1 | Phloem-Mobile AuxlIAA Transcripts Target to the Root Tip and Modify Root Architecture显示文摘In plants,the phloem is the component of the vascular system that delivers nutrients and transmits signals from mature leaves to developing sink tissues.Recent studies have identified proteins,mRNA,and small RNA within the phloem sap of several plant species.It is now of considerable interest to elucidate the biological functions of these potential long-distance signal agents,to further our understanding of how plants coordinate their developmental programs at the whole-plant level.In this study,we developed a strategy for the functional analysis of phloem-mobile mRNA by focusing on IAA transcripts,whose mobility has previously been reported in melon (Cucumis melo cv.Hale's Best Jumbo).Indoleacetic acid (IAA) proteins are key transcriptional regulators of auxin signaling,and are involved in a broad range of developmental processes including root development.We used a combination of vasculature-enriched sampling and hetero-grafting techniques to identify IAA18 and IAA28 as phloem-mobile transcripts in the model plant Arabidopsis thaliana.Micro-grafting experiments were used to confirm that these IAA transcripts,which are generated in vascular tissues of mature leaves,are then transported into the root system where they negatively regulate lateral root formation.Based on these findings,we present a model in which auxin distribution,in combination with phloem-mobile Aux/IAA transcripts,can determine the sites of auxin action. | Michitaka Notaguchi Shmuel Wolf William J.Lucas | 2012 | Journal of Integrative Plant Biology2012，54，10： | 13 |
| 2 | Long-distance,graft-transmissible action of Arabidopsis FLOWERING LOCUS T protein to promote flowering显示文摘 | NOTAGUCHI M ABE M KIMURA T | 2008 | Plant Cell Physiol2008，49，： | 1 |
| 3 | Adaptation of a seedling micro-grafting technique to the study of long-distance signaling in flowering of Arabidopsis thaliana显示文摘 | Michitaka Notaguchi Yasufumi Daimon Mitsutomo Abe Takashi Araki | 2009 | Journal of Plant Research2009，，2： | 1 |
| 4 | FD, a bZIP protein mediating signals from the floral pathway integrator FTat the shoot apex显示文摘 | ABE--M KOBAYASHI Y YAMAMOTO S DAIMON Y YAMAGUCHI A IKEDA Y ICHINOKI H NOTAGUCHI M GOTO K ARAKI T | 2005 | Science2005，309，5737： | 1 |
| 5 | FD,a bZIP protein mediating signals from the floral pathway integrator FT at the shoot apex显示文摘 | ABE M KOBAYASHI Y YAMAMOTO S DAIMON Y YAMAGUCHI A IKEDA Y ICHINOKI H NOTAGUCHI M GOTO K ARAKI T | 2005 | Science2005，309，： | 1 |
| 6 | FD, a bZIP protein mediating signals from the floral pathway integrator FT at the shoot apex显示文摘 | Abe M Kobayashi Y Yamamoto S Daimon Y Yamaguchi A Ikeda Y Ichinoki H Notaguchi M Goto K and Araki T | 2005 | Science2005，309，5737： | 1 |
| 7 | Long-distance, grit-trans- missible action of Arabidopsia FLOWERING LOCUS T protein pro- mote flowering显示文摘 | Notaguchi M Abe M Kimum T | 2008 | Plant Cell Physiology2008，49，： | 1 |
| 8 | FD,a bZIP protein mediating signals from the floral path - way integrator FT at the shoot apex 显示文摘 | Abe M Kobayashi Y Yamamoto S Daimon Y Yamaguchi A Ikeda Y Ichinoki H Notaguchi M Goto K Araki T | 2005 | Science2005，309，： | 1 |
| 9 | Long-distance,graft-transmissible action of Arabidopsis FLOWERING LOCUS T protein to promote flowering显示文摘 | Notaguchi M Abe M Kimura T | | 0，，11： | 1 |
| 10 | Nicotiana benthamiana XYLEM CYSTEINE PROTEASE genes facilitate tracheary element formation in interfamily grafting显示文摘Grafting is a plant propagation technique widely used in agriculture.A recent discovery of the capability of interfamily grafting in Nicotiana has expanded the potential combinations of grafting.In this study,we showed that xylem connection is essential for the achievement of interfamily grafting and investigated the molecular basis of xylem formation at the graft junction.Transcriptome and gene network analyses revealed gene modules for tracheary element(TE)formation during grafting that include genes associated with xylem cell differentiation and immune response.The reliability of the drawn network was validated by examining the role of the Nicotiana benthamiana XYLEM CYSTEINE PROTEASE(NbXCP)genes in TE formation during interfamily grafting.Promoter activities of NbXCP1 and NbXCP2 genes were found in differentiating TE cells in the stem and callus tissues at the graft junction.Analysis of a Nbxcp1;Nbxcp2 loss-of-function mutant indicated that NbXCPs control the timing of de novo TE formation at the graft junction.Moreover,grafts of the NbXCP1 overexpressor increased the scion growth rate as well as the fruit size.Thus,we identified gene modules for TE formation at the graft boundary and demonstrated potential ways to enhance Nicotiana interfamily grafting. | Chaokun Huang Ken-ichi Kurotani Ryo Tabata Nobutaka Mitsuda Ryohei Sugita Keitaro Tanoi Michitaka Notaguchi | 2023 | Horticulture Research2023，10，6： | 0 |
| 11 | Combination of genetic analysis and ancient literature survey reveals the diverge nee of traditional Brassica rapa varieties from Kyoto, Japan显示文摘Since ancient times,humans have bred several plants that we rely on today.However,little is known about the divergence of most of these plants.In the present study,we investigated the divergence of Mibuna(Brassica rapa L.subsp.nipposinica L.H.Bailey),a traditional leafy vegetable in Kyoto(Japan),by combining genetic analysis and a survey of ancient literature.Mibuna is considered to have been bred 200 years ago from Mizuna,another traditional leafy vegetable in Kyoto.Mibuna has simple spatulate leaves,whereas Mizuna has characteristic serrated leaves.The quantitative trait loci(QTL)and gene expression analyses suggested that the downregulation of BrTCP15 expression contributed to the change in the leaf shape from serrated to simple spatulate.Interestingly,the SNP analysis indicated that the genomic region containing the BrTCP15 locus was transferred to Mibuna by introgression.Furthermore,we conducted a survey of ancient literature to reveal the divergence of Mibuna and found that hybridization between Mizuna and a simple-leaved turnip might have occurred in the past.Indeed,the genomic analysis of multiple turnip cultivars showed that one of the cultivars,Murasakihime,has almost the same sequence in the BrTCP15 region as Mibuna.These results suggest that the hybridization between Mizuna and turnip has resulted in the establishment of Mibuna. | Yaichi Kawakatsu Tomoaki Sakamoto Hokuto Nakayama Kaori Kaminoyama Kaori Igarashi Masaki Yasugi Hiroshi Kudoh Atsushi JNagano Kentaro Yano Nakao Kubo Michitaka Notaguchi Seisuke Kimura | 2021 | Horticulture Research2021，8，1： | 0 |
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