Roles of Transcription Factor NF-Y in Plant Growth, Development and Response to Stress
LI Juan, GAO Kai, AN Xinmin*
NF-Y (nuclear factor-Y), also known as HAP (heme activator factor) or CBFCCAAT box binding factor. The NF-Y is trimeric transcription factor complex composed of NF-YA, NF-YB, and NF-YC subunits, and it is found almost in all eukaryotes. In yeast and animals, a single gene encodes each of the three NF-Y protein subunits. However, it generally have multiple genes encode each subunit in plants, and usually form a trimer complex to function. NF-Ys play important roles in the plant growth and development. Such as, regulating embryo synthesis, root growth, flowering age and fruit ripening, etc. In addition, it also has resistance to stress. Here, we mainly describe the structure of NF-Y single subunits and regulation mechanism of NF-Y, and reviews the important role of NF-Y in plant growth and development. Finally, the research prospects of NF-Y are prospected.
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