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琉球大学熱帯生物学研究センター西表研究施設
 西表島での研究活動   Research Life in Iriomote Island  
 

メンバー:梶田 忠

 ・マングローブ植物の保全遺伝学的研究
 ・汎熱帯海流散布植物の系統地理学的研究
 ・種子植物の系統分類学的研究

熱帯・亜熱帯の植物多様性に関する研究

熱帯・亜熱帯の植物の多様性を、進化、系統分類、集団遺伝、保全、生態など、様々な方面から研究している。特に、西表研究施設においては、マングローブ植物の保全遺伝学的研究や、海流散布植物の系統地理学的研究など、広域分布する海流散布植物の種内の遺伝多的多様性に注目して、遺伝マーカーによる多様性解析や交配実験、フィールドワークによる研究も実施している。また、マメ科植物の多様化や、根粒菌との共生特異性の進化についての研究も実施している。


Publications

  • Ono J, Yong JWH, Takayama K, Saleh MH, Wee AKS, Asakawa T, Yllano OB, Salmo SG III, Suleiman M, Tung NX, Soe KK, Meenakshisundaram SH, Watano Y, Webb EL, Kajita K. Bruguiera hainesii, a critically endangered mangrove species, is a hybrid between B. cylindrica and B. gymnorhiza (Rhizophoraceae). Conservation Genetics. (accepted).
  • C. Snak, M. Vatanparast, C. Silva, G. P. Lewis, M. Lavin, T. Kajita, L. P. Queiroz.  “A dated phylogeny of the papilionoid legume genus Canavalia reveals recent diversification by a pantropical liana lineage.” Molecular Phylogenetics and Evolution. 98: 133-146 (2016).
  • Tania M. Moura · Mohammad Vatanparast · Ana M. G. A. Tozzi · Félix Forest · C. Melanie Wilmot-Dear · Marcelo F. Simon · Vidal F. Mansano · Tadashi Kajita · Gwilym P. Lewis . 2015. A Molecular Phylogeny and New Infrageneric Classification of Mucuna Adans. (Leguminosae-Papilionoideae) including Insights from Morphology and Hypotheses about Biogeography.  International Journal of Plant Sciences. 177(1): 76-89.
  • Alison K S Wee, Koji Takayama, Jasher L Chua, Takeshi Asakawa, Sankararamasubramanian H Meenakshisundaram, Onrizal, Bayu Adjie, Erwin Riyanto Ardli, Sarawood Sungkaew, Norhaslinda Binti Malekal, Nguyen Xuan Tung, Severino G Salmo, Orlex Baylen Yllano, M Nazre Saleh, Khin Khin Soe, Yoichi Tateishi, Yasuyuki Watano, Shigeyuki Baba, Edward L Webb and Tadashi Kajita*. 2015. Genetic differentiation and phylogeography of partially sympatric species complex Rhizophora mucronata Lam. and R. stylosa Griff. using SSR markers. BMC Evolutionary Biology. 15:57  doi:10.1186/s12862-015-0331-3
  • Gutiérrez Ortega J.S., Kajita T., Molina-Freaner F.E. 2014. Conservation genetics of an endangered cycad, Dioon sonorense (Zamiaceae): implications from variation of chloroplast DNA. Botanical Sciences. 92(3): 441-451.
  • Miryeganeh, M., Takayama, K., Tateishi, Y. and Kajita, T. 2014. Long-Distance Dispersal by Sea-Drifted Seeds Has Maintained the Global Distribution of Ipomoea pes-caprae subsp. brasiliensis (Convolvulaceae). Plos One. DOI: 10.1371/journal.pone.0091836>.
  • Alison Wee Kim Shan, Koji Takayama, Takeshi Asakawa, Bijoy Thompson, Onrizal, Sarawood Sungkaew, Ngyuyen Xuan Tung, Nazre Saleh, Khin Khin Soe, Hugh Tan, Yasuyuki Watano, Shigeyuki Baba, Tadashi Kajita, Edward L. Webb. 2014. Oceanic currents, not land masses, maintain the genetic structure of mangrove Rhizophora mucronata Lam. (Rhizophoraceae) in Southeast Asia. Journal of Biogeography, 954-964.
  • Matin Miryeganeh, Koji Takayama, Yoichi Tateishi, Tadashi Kajita. 2014. Geographic structure of a true pantropical plant with sea-drifted seeds, Ipomoea pes-caprae (Convolvulaceae), revealed by nuclear markers. Journal of Japanese Botany, 89, 65-75.
  • Emiko Oguri, Tomio Yamaguchi, Tadashi Kajita, and Noriaki Murakami. 2013. Microsatellite Markers for Leucobryum boninense (Leucobryaceae), Endemic to the Bonin Islands, Japan. Applications in Plant Sciences. 2014:2(4) doi: http://dx.doi.org/10.3732/apps.1200399.
  • Vatanparas, M., Bente B. Klitgård, Frits A.C.B. Adema, R.Toby Pennington, Tetsukazu Yahara, Tadashi Kajita. 2013. First molecular phylogeny of the pantropical genus Dalbergia: implications for infrageneric circumscription and biogeography. South African Journal of Botany. 89: 143–149.
  • Takayama, K., M. Tamura, Y. Tateishi, E. Webb and T. Kajita. 2013. Strong genetic structure over the American continents and transoceanic dispersal in red mangroves Rhizophora (Rhizophoraceae), revealed by broad-scale nuclear and chloroplast DNA analysis. American Journal of Botany.100, 1191-1201.
  • The Legume Phylogeny Working Group. 2013. Legume Phylogeny and classificationin the 21st entury: Progress, prospects and lessons for other species-rich clades. TAXON.  62 (2): 217–248.
  • Yahara, T. et al. 2013. Global legume diversity assessment: concepts, key indicators, and strategies. TAXON. TAXON. 62(2): 217-248.
  • Wee, AKS, K. Takayama, T. Kajita and EL Webb. 2013. Microsatellite loci for Avicennia alba (Avicenniaceae), Sonneratia alba (Lythraceae) and Rhizophora mucronata (Rhizophoraceae).  Journal of Tropical Forest Science 25(1): 1-8.
  • Shinmura Y, Wee AKS, Takayama K, Meenakshisundaram SH, Asakawa T, Onrizal, Adjie B, Ardli ER, Sungkaew S, Malekal NB, Tung NX, Salmo III SG, Yllano OB, Saleh MN, Soe KK, Oguri E, Murakami N, Watano Y, Baba S, Webb EL and Kajita T. 2012. Isolation and characterization of 14 microsatellite markers for Rhizophora mucronata (Rhizophoraceae) and their potential use in range-wide population studies. Conservation Genetics Resources. 4(4): 951-954.
  • Shinmura, Y., A. K. S. Wee, K. Takayama, T. Asakawa, O. B. Yllano, S. I. G. Salmo, E. R. Ardli, N. X. Tung, N. B. Malekal, Onrizal, S. H. Meenakshisundaram, S. Sungkaew, M. N. B. Saleh, B. Adjie, M. K. K. Soe, E. Oguri, N. Murakami, Y. Watano, S. Baba, E. L. Webb & T. Kajita. 2012. Development and characterization of 15 polymorphic microsatellite loci in Sonneratia alba (Lythraceae) using next-generation sequencing. Conservation Genetics Resources 4: 811-814.
  • Koji Takayama, Mariko Tamura, Junya Ono, Yoichi Tateishi, Tadashi Kajita, 2011.
  • Isolation and characterization of microsatellite loci in the large-leafed mangrove Bruguiera gymnorhiza. In Permanent genetic resource note, Molecular Ecology Resources 11: 219-222.
  • Mohammad Vatanparast, Koji Takayama, Mario S. Sousa, Yoichi Tateishi and Tadashi Kajita. 2011. Origin of Hawaiian Endemic Species of Canavalia (Fabaceae) from Sea-Dispersed Species Revealed by Chloroplast and Nuclear DNA Sequences.  Journal of Japanese Botany 81(1): 15-25.
  • Maeda, T, Kajita T, Maruyama T, and Hirano Y. 2010. Molecular phylogeny of the Sacoglossa, with a discussion of gain and loss of kleptoplasty in the evolution of the group.  [[Biological Bulletin 219: 17-26>http://www.biolbull.org/cgi/content/full/219/1/17]].
  • Shirai A, Kondo T, and Kajita T. 2010. Molecular markers reveal genetic contamination of endangered freshwater pearl mussels in pearl culture farms in Japan. VENUS 68: 151-163.
  • Minobe S, Fukui S, Saiki R, Kajita T, et al. 2010. Highly differentiated population structure of a Mangrove species, Bruguiera gymnorhiza (Rhizophoraceae) revealed by one nuclear GapCp and one chloroplast intergenic spacer trnF-trnL. Conservation Genetics 11: 301-310.
  • Takayama K, Tamura M, Tateishi Y, and Kajita T. 2009. Isolation and characterization of microsatellite loci in a mangrove species, Rhizophora stylosa (Rhizophoraceae). Conservation Genetics Resources. 1: 175-178.
  • Takayama K, Tamura M, Tateishi Y, and Kajita T. 2008. Isolation and characterization of microsatellite loci in the red mangrove Rhizophora mangle (Rhizophoraceae) and its related species. Conservation Genetics 9: 1323-1325..
  • Wakita N, Tateishi Y, Ohi-Toma T, Murata J, and Kajita T. 2008. Presence of two Entada species in Japan evidenced by cpDNA phylogeny. Acta Phytotaxonomica et Geobotanica 59: 183-193.
  • Tateishi Y, Wakita N, and Kajita T. 2008. Taxonomic revision of the genus Entada (Leguminosae) in the Ryukyu Islands, Japan. Acta Phytotaxonomica et Geobotanica 59: 194-210.
  • Takayama K, Tateishi Y, Murata J, and Kajita T. 2008. Gene flow and population subdivision in a pantropical plant with sea-drifted seeds Hibiscus tiliaceus and its allied species: evidence from microsatellite analyses. Molecular Ecology 17: 2730-2742.
  • Takayama K, Kajita T, Murata J, and Tateishi Y. 2006. Isolation and characterization of microsatellites in the sea hibiscus (Hibiscus tiliaceus L., Malvaceae) and related hibiscus species. Molecular Ecology Notes 6: 721-723.
  • Takayama, K., Tadashi Kajita, Jin Murata and Y. Tateishi. 2006. Phylogeography and genetic structure of Hibiscus tiliaceus speciation of a pantropical plant with sea-drifted seeds Molecular Ecology (15): 2871-2881.
  • Takayama, K., Tadashi Kajita, Jin Murata and Y. Tateishi. 2006. Isolation and characterization of microsatellites in the sea hibiscus (Hibiscus tiliaceus L., Malvaceae) and related hibiscus species. Molecular Ecology Notes (6): 721-723
  • Watanabe K, Kajita T, and Murata J. 2006. Chloroplast DNA variation and geographical structure of the Aristolochia kaempferi group (Aristolochiaceae). Am. J. Bot. ; 93: 442-453.
  • Kenicer GJ, Kajita T, Pennington RT, Murata J. 2005. Systematics and biogeography of Lathyrus (Leguminosae) based on internal transcribed spacer and cpDNA sequence data. American Journal of Botany 92: 1199-1209.
  • Ohi, T., T. Kajita and J. Murata.  2003.  Distinct geographic structure as evidenced by chloroplast DNA haplotypes and ploidy level in Japanese Aucuba (Aucubaceae).  American Journal of Botany.  2003. 90(11) 1646 - 1653
  • Kajita, T., H. Ohashi, Y. Tateishi, C.D. Bailey and J.J. Doyle, rbcL and legume phylogeny, with particular reference to Phaseoleae, Millettieae, and allies.  Systematic Botany, 2001. 26(3): p. 515-536.
  • Kajita, T. and H. Ohashi, Infraspecific restriction site variation in the chloroplast DNA of Desmodium podocarpum DC. (Leguminosae - Papilionoideae). Journal of Japanese Botany, 2001. 76(2): p. 77-83.
  • Nozaki, H., K. Misawa, T. Kajita, M. Kato, S. Nohara, and M. Watanabe, Origin and evolution of the colonial Volvocales (Chlorophyceae) as inferred from multiple, chloroplast gene sequences. Molecular Phylogenetics and Evolution, 2000. 17(2): p. 256-258.
  • Azuma, T., T. Kajita, J. Yokoyama and H. Ohashi, Phylogenetic relationships of Salix (Salicaceae) based on rbcL sequence data. American Journal of Botany, 2000. 87(1): p. 67-75.
  • Kamiya, K., K. Harada, K. Ogino, T. Kajita, T. Yamazaki, H.-S. Lee, and P.S. Ashton, Molecular phylogeny of dipterocarp species using nucleotide sequences of two non-coding regions in chloroplast DNA. Tropicos, 1998. 7(3/4): p. 195-207.
  • T. Kajita, K. Kamiya, K. Nakamura, H. Tachida, R. Wickneswari, Y. Tsumura, H. Yoshimaru, and T. Yamazaki. 1998.  Molecular phylogeny of Dipterocarpaceae in Southeast Asia based on nucleotide sequences of matK, trnL intron, and trnL-trnF intergenic spacer region in chloroplast DNA.   Molecular Phylogenetics and Evolution 10 :  202-209.
  • Doyle, J.J., J.L. Doyle, J.A. Ballenger, F.E. Dickson, T. Kajita, and H. Ohashi, A phylogeny of the chloroplast gene rbcL in the Leguminosae: taxonomic correrations and insights into the evolution of nodulation. American Journal of Botany, 1997. 84(4): p. 541-554.
  • Bailey, C.D., J.J. Doyle, T. Kajita, T. Nemoto and H. Ohashi, The chloroplast rpl2 intron and ORF184 as phylogenetic markers in the legume tribe Desmodieae. Systematic Botany, 1997. 22(1): p. 133-138.
  • Kajita, T. and H. Ohashi.  Chloroplast DNA variation in Desmodium subgenus Podocarpium (Leguminosae): Infrageneric phylogeny and infraspecific variations. Journal of Plant Research. 1994. 107(1087): p.349-354.
  • M. Mizuno, M. Kato, M. Iinuma, T. Tanaka, A. Kimura, H. Ohashi, H. Sakai and T. Kajita.  1991.  Further study on two chemical races of Salix sachalinensis Fr. Schmidt.  Chem. Pharm. Bull. 39 (3): 803 - 804.
  • M. Mizuno, M. Kato, M. Iinuma, T. Tanaka, A. Kimura, H. Ohashi, H. Sakai and T. Kajita.  1990.  Phenolic compounds from Salix sachalinensis.  Heterocycles.  31: 1409-1412.
  • M. Mizuno, M. Kato, M. Iinuma, T. Tanaka, A. Kimura, H. Ohashi, H. Sakai and T. Kajita.  1989.  Two chemical races in Salix sachalinensis Fr. Schmidt (Salicaceae).  Botanical Magazine Tokyo.  102: 403-411.