Displaying G2-like Family from Sorghum


INFORMATION ABOUT G2-like FAMILY

In the C4 plant maize, three photosynthetic cell types differentiate: C4 bundle sheath, C4 mesophyll, and C3 mesophyll cells. C3 mesophyll cells represent the ground state, whereas C4 bundle sheath and C4 mesophyll cells are specialized cells that differentiate in response to light-induced positional signals. The Golden2 (G2) gene regulates plastid biogenesis in all photosynthetic cells during the C3 stages of development. However, G2 function is specifically committed to the differentiation of bundle sheath cell chloroplasts in C4 leaf blades. In this article, we report the isolation of G2-like (Glk) genes from maize and rice, providing evidence for a family of Glk genes in plants. The expression profiles of the rice Glk genes suggest that these genes may act redundantly to promote photosynthetic development in this C3 species. In maize, G2 and ZmGlk1 transcripts accumulate primarily in C4 bundle sheath and C4 mesophyll cells, respectively, suggesting a specific role for each gene in C4 differentiation. We show that G2 and ZmGLK1 both can transactivate reporter gene transcription and dimerize in yeast, which supports the idea that these proteins act as transcriptional regulators of cell-type differentiation processes.


Protein Name
accepted / suggested
Gene Locus Synonym/
Gene Name
Clone in TFome Genome Browser
SbGLK1 Sb01g007030 View in Browser
SbGLK2 Sb01g007130 View in Browser
SbGLK3 Sb01g014354 View in Browser
SbGLK4 Sb01g036440 View in Browser
SbGLK5 Sb01g036680 View in Browser
SbGLK6 Sb01g048420 View in Browser
SbGLK7 Sb02g001600 View in Browser
SbGLK8 Sb02g010520 View in Browser
SbGLK9 Sb02g020700 View in Browser
SbGLK10 Sb02g043320 View in Browser
SbGLK11 Sb03g000400 View in Browser
SbGLK12 Sb03g004090 View in Browser
SbGLK13 Sb03g012625 View in Browser
SbGLK14 Sb03g039610 View in Browser
SbGLK15 Sb03g047330 View in Browser
SbGLK16 Sb04g003140 View in Browser
SbGLK17 Sb04g004930 View in Browser
SbGLK18 Sb04g008670 View in Browser
SbGLK19 Sb04g030830 View in Browser
SbGLK20 Sb04g031030 View in Browser
SbGLK21 Sb04g032130 View in Browser
SbGLK22 Sb05g000480 View in Browser
SbGLK23 Sb06g025600 View in Browser
SbGLK24 Sb06g027405 View in Browser
SbGLK25 Sb06g031970 View in Browser
SbGLK26 Sb07g004100 View in Browser
SbGLK27 Sb07g020820 View in Browser
SbGLK28 Sb07g021290 View in Browser
SbGLK29 Sb08g000510 View in Browser
SbGLK30 Sb08g003180 View in Browser
SbGLK31 Sb08g019720 View in Browser
SbGLK32 Sb08g019940 View in Browser
SbGLK33 Sb09g020340 View in Browser
SbGLK34 Sb09g023830 View in Browser
SbGLK35 Sb09g024090 View in Browser
SbGLK36 Sb10g008400 View in Browser
SbGLK37 Sb10g021360 View in Browser
SbGLK38 Sb10g025500 View in Browser
SbGLK39 Sb10g026550 View in Browser
SbGLK40 Sb10g026930 View in Browser
SbGLK41 Sb10g029200 View in Browser