Regulation of stomatal opening and histone modification by photoperiod in Arabidopsis thaliana

被引:20
|
作者
Aoki, Saya [1 ,6 ]
Toh, Shigeo [1 ,7 ]
Nakamichi, Norihito [2 ]
Hayashi, Yuki [1 ]
Wang, Yin [3 ]
Suzuki, Takamasa [4 ]
Tsuji, Hiroyuki [5 ]
Kinoshita, Toshinori [1 ,2 ]
机构
[1] Nagoya Univ, Grad Sch Sci, Div Biol Sci, Chikusa Ku, Nagoya, Aichi 4648602, Japan
[2] Nagoya Univ, Inst Transformat Biomol WPI ITbM, Chikusa Ku, Nagoya, Aichi 4648602, Japan
[3] Nagoya Univ, Inst Adv Res, Chikusa Ku, Nagoya, Aichi 4648602, Japan
[4] Chubu Univ, Coll Biosci & Biotechnol, Dept Biol Chem, 1200 Matsumoto Cho, Kasugai, Aichi 4878501, Japan
[5] Yokohama City Univ, Kihara Inst Biol Res, 641-12 Maioka, Yokohama, Kanagawa 2440813, Japan
[6] Minist Educ Culture Sports Sci & Technol, Chikusa Ku, Tokyo 1008959, Japan
[7] Meiji Univ, Sch Agr, Dept Life Sci, Kawasaki, Kanagawa 2148571, Japan
基金
日本科学技术振兴机构;
关键词
MEMBRANE H+-ATPASE; DIFFERENTIAL EXPRESSION ANALYSIS; BLUE-LIGHT REGULATION; GUARD-CELLS; CONSTANS; ACTIVATION; LOCUS; PATHWAYS; GENES; SOC1;
D O I
10.1038/s41598-019-46440-0
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Stomatal movements are regulated by many environmental signals, such as light, CO2, temperature, humidity, and drought. Recently, we showed that photoperiodic flowering components have positive effects on light-induced stomatal opening in Arabidopsis thaliana. In this study, we determined that light-induced stomatal opening and increased stomatal conductance were larger in plants grown under long-day (LD) conditions than in those grown under short-day (SD) conditions. Gene expression analyses using purified guard cell protoplasts revealed that FT and SOC1 expression levels were significantly increased under LD conditions. Interestingly, the enhancement of light-induced stomatal opening and increased SOC1 expression in guard cells due to LD conditions persisted for at least 1 week after plants were transferred to SD conditions. We then investigated histone modification using chromatin immunoprecipitation-PCR, and observed increased trimethylation of lysine 4 on histone 3 (H3K4) around SOC1. We also found that LD-dependent enhancement of light-induced stomatal opening and H3K4 trimethylation in SOC1 were suppressed in theft-2 mutant. These results indicate that photoperiod is an important environmental cue regulating stomatal opening, and that LD conditions enhance light-induced stomatal opening and epigenetic modification (H3K4 trimethylation) around SOC1, a positive regulator of stomatal opening, in an FT-dependent manner. Thus, this study provides novel insights into stomatal responses to photoperiod.
引用
收藏
页数:9
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