title: Expression of the Arabidopsis borate efflux transporter gene, AtBOR4, in rice affects the xylem loading of boron and tolerance to excess boron.
abstract: Boron is an essential nutrient for plants, but it is toxic in excess. Transgenic rice plants expressing an Arabidopsis thaliana borate efflux transporter gene, AtBOR4, at a low level exhibited increased tolerance to excess boron. Those lines with high levels of expression exhibited reduced growth. These findings suggest a potential of the borate transporter BOR4 for the generation of high-boron tolerant rice.
authors.affiliation: Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Japan.
authors.forename: Masataka
authors.initials: M
authors.lastname: Kajikawa
authors.forename: Takahiro
authors.initials: T
authors.lastname: Fujibe
authors.forename: Shimpei
authors.initials: S
authors.lastname: Uraguchi
authors.forename: Kyoko
authors.initials: K
authors.lastname: Miwa
authors.forename: Toru
authors.initials: T
authors.lastname: Fujiwara
mesh_terms: D017920:Antiporters / Q000235:genetics*; D017360:Arabidopsis / Q000235:genetics*; D029681:Arabidopsis Proteins / Q000235:genetics*; D001895:Boron / Q000378:metabolism* / Q000633:toxicity*; D015870:Gene Expression; D012275:Oryza / Q000187:drug effects* / Q000235:genetics* / Q000254:growth & development / Q000378:metabolism; D030821:Plants, Genetically Modified; D052584:Xylem / Q000378:metabolism*
chemical_list: D017920:Antiporters; D029681:Arabidopsis Proteins; C524889:BOR4 protein, Arabidopsis; D001895:Boron