MicroRNA 399 as a potential integrator of photo-response, phosphate homeostasis, and sucrose signaling under long day condition

BMC Plant Biology

Jun Zhang¹  Mingna Li²  Shunxi Wang²  Dandan Dou²  Huafeng Liu²  Liuji Wu²  Lei Tian²  Lixia Ku²  Yanhui Chen²  Xiaoheng Song²  Jinlong Zhou²  Ligang Ren³  Haiping Liu⁴  Guiliang Tang⁴ 

[1] Cereal Institute, Henan Academy of Agricultural Science/Henan Provincial Key Laboratory of Maize Biology;College of Agronomy, National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University;College of Life Science, Northwest Agriculture and Forestry University;Department of Biological Sciences, Michigan Technological University;

关键词: microRNA399;    Sucrose.;    Maize.;    Arabidopsis thaliana.;    Photoperiod.;    Long day.;   

DOI  :  10.1186/s12870-018-1460-9

来源: DOAJ

【 摘 要 】

Abstract Background Photoperiod-sensitivity is a critical endogenous regulatory mechanism for plant growth and development under specific environmental conditions, while phosphate and sucrose signaling processes play key roles in cell growth and organ initiation. MicroRNA399 is phosphate-responsive, but, whether it has roles in other metabolic processes remains unknown. Results MicroRNA399 was determined to be sucrose-responsive through a microRNA array assay. High levels of sucrose inhibited the accumulation of microRNA399 family under phosphate starvation conditions in Arabidopsis thaliana. Similarly, exogenous sucrose supplementation also reduced microRNA399 expression in maize at developmental transition stages. RNA sequencing of a near-isogenic line(photoperiod-sensitive) line and its recurrent parent Huangzao4, a photoperiod-insensitive line, was conducted at various developmental stages. Members of microRNA399 family were down-regulated under long-day conditions in the photoperiod-sensitive near-isogenic line that accumulated more sucrose in vivo compared with the control line Huangzao4. Conclusion MicroRNA399s may play central roles in the integration of sucrose sensing and photoperiodic responses under long day conditions in maize.

【 授权许可】

Unknown