Identification and expression profile analysis of NUCLEAR FACTOR-Y families in Physcomitrella patens.
NUCLEAR FACTOR Y transcription factors belong to a multimember family and consist of NF-YA/B/C subunits. Members of the NF-Y family have been reported to regulate physiological processes in plant. In this study, we identified and annotated two NF-YA, nine NF-B, and twelve NF-YC proteins in the genome of Physcomitrella patens. Analyses of conserved domains demonstrated that PpNF-YA/B/C shared the same conserved domains with their orthologous proteins in Arabidopsis, O. sativa and mouse. Expression profiles indicated that PpNF-Ys were widely expressed in different tissues and developmental stages of P. patens throughout protonema and gametophores. The majority of PpNF-Y genes were responsive to abiotic stress via either ABA-independent or -dependent pathways. Some of ABA-regulated PpNF-Y expression were mediated by ABI3. To our knowledge, this study was the first to evaluate NF-Y families in Physcomitrella patens, and provides a foundation to dissect the function of PpNF-Ys.
College of Life Science, Capital Normal University Beijing, China.
Fang
F
Zhang
College of Life Science, Capital Normal University Beijing, China.
Min
M
Han
College of Life Science, Capital Normal University Beijing, China.
Qiang
Q
Lv
College of Life Science, Capital Normal University Beijing, China.
Fang
F
Bao
College of Life Science, Capital Normal University Beijing, China.
Yikun
Y
He
abiotic stress; abscisic acid; gene regulation; temporal and spatial expression; transcription factors