Isolation and characterization of genes encoding GRF transcription factors and GIF transcriptional coactivators in Maize (Zea mays L.)

By Dengfeng Zhang, G. Jia, Tifu Zhang, J. Dai, Jiansheng Li, Shoucai Wang. Plant Science, 2008

119 citations recorded by the source corpus.

It has been a long-held view that regulation of gene expression in eukaryotes occurs predominantly at the transcriptional level. GRF (Growth-regulating factor) and GIF (GRF-interacting factor) proteins are putative novel transcriptional regulators and coactivators which form protein complexes and are involved in regulating the growth and development of certain tissues and/or organs in plants. In this study, 14 homologs of ZmGRF genes and 3 homologs of ZmGIF genes from maize (Zea mays L.) were identified and characterized. Fourteen GRF proteins were divided into three subfamilies. ZmGRF genes of C subfamily were mainly expressed in immature ears. Furthermore, overexpression of both ZmGRF11-ZmGIF2 and ZmGRF2-ZmGIF3 resulted in delayed bolting but accelerating the growth of inflorescence stem when compared to wild-type Arabidopsis thaliana. As a result, we postulated that these four genes which expressed preferentially in immature ear tissues in maize might play important roles in the growth and development of ears and might contribute to improving corn yields.

Subfields: Molecular Biology, Plant Science

View Paper: https://www.semanticscholar.org/paper/9e6879c9e8d93816eed18b7104cd8d3966352b90

Citations in the corpus

• Comprehending crystalline β-carotene accumulation by comparing engineered cell models and the natural carotenoid-rich system of citrus (2011, unknown): “Research on ZmGRF2 and ZmGIF3 in Arabidopsis which only showed delayed bolting of the inflorescence stem and acceleration of the elongation of the stem seemed to confirm this view point (Zhang et al., 2008).”