title: Overexpression of TIFY genes promotes plant growth in rice through jasmonate signaling.
abstract: Because environmental stress can reduce crop growth and yield, the identification of genes that enhance agronomic traits is increasingly important. Previous screening of full-length cDNA overexpressing (FOX) rice lines revealed that OsTIFY11b, one of 20 TIFY proteins in rice, affects plant size, grain weight, and grain size. Therefore, we analyzed the effect of OsTIFY11b and nine other TIFY genes on the growth and yield of corresponding TIFY-FOX lines. Regardless of temperature, grain weight and culm length were enhanced in lines overexpressing TIFY11 subfamily genes, except OsTIFY11e. The TIFY-FOX plants exhibited increased floret number and reduced days to flowering, as well as reduced spikelet fertility, and OsTIFY10b, in particular, enhanced grain yield by minimizing decreases in fertility. We suggest that the enhanced growth of TIFY-transgenic rice is related to regulation of the jasmonate signaling pathway, as in Arabidopsis. Moreover, we discuss the potential application of TIFY overexpression for improving crop yield.
authors.affiliation: a National Institute of Agrobiological Sciences , Tsukuba , Japan.|b Hokuriku Research Center, Central Region Agricultural Research Center , National Agriculture and Food Research Organization , Joetsu , Japan.|c Kyushu Okinawa Agricultural Research Center , National Agriculture and Food Research Organization , Chikugo , Japan.
authors.forename: Makoto
authors.initials: M
authors.lastname: Hakata
authors.affiliation: a National Institute of Agrobiological Sciences , Tsukuba , Japan.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Muramatsu
authors.affiliation: a National Institute of Agrobiological Sciences , Tsukuba , Japan.
authors.forename: Hidemitsu
authors.initials: H
authors.lastname: Nakamura
authors.affiliation: a National Institute of Agrobiological Sciences , Tsukuba , Japan.
authors.forename: Naho
authors.initials: N
authors.lastname: Hara
authors.affiliation: a National Institute of Agrobiological Sciences , Tsukuba , Japan.
authors.forename: Miho
authors.initials: M
authors.lastname: Kishimoto
authors.affiliation: a National Institute of Agrobiological Sciences , Tsukuba , Japan.
authors.forename: Keiko
authors.initials: K
authors.lastname: Iida-Okada
authors.affiliation: a National Institute of Agrobiological Sciences , Tsukuba , Japan.
authors.forename: Mariko
authors.initials: M
authors.lastname: Kajikawa
authors.affiliation: a National Institute of Agrobiological Sciences , Tsukuba , Japan.
authors.forename: Naoko
authors.initials: N
authors.lastname: Imai-Toki
authors.affiliation: a National Institute of Agrobiological Sciences , Tsukuba , Japan.
authors.forename: Seiichi
authors.initials: S
authors.lastname: Toki
authors.affiliation: a National Institute of Agrobiological Sciences , Tsukuba , Japan.
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Nagamura
authors.affiliation: b Hokuriku Research Center, Central Region Agricultural Research Center , National Agriculture and Food Research Organization , Joetsu , Japan.
authors.forename: Hiromoto
authors.initials: H
authors.lastname: Yamakawa
authors.affiliation: a National Institute of Agrobiological Sciences , Tsukuba , Japan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Ichikawa
mesh_terms: D003517:Cyclopentanes / Q000378:metabolism* / Q000494:pharmacology; D035264:Flowers / Q000187:drug effects / Q000254:growth & development; D015870:Gene Expression; D006358:Hot Temperature; D012275:Oryza / Q000166:cytology / Q000187:drug effects / Q000235:genetics* / Q000254:growth & development*; D054883:Oxylipins / Q000378:metabolism* / Q000494:pharmacology; D010940:Plant Proteins / Q000235:genetics*; D015398:Signal Transduction / Q000187:drug effects
chemical_list: D003517:Cyclopentanes; D054883:Oxylipins; D010940:Plant Proteins; C011006:jasmonic acid
keywords: TIFY/JAZ proteins; floret number; grain weight; growth promotion; rice (Oryza sativa L.)