Rice histone deacetylase genes display specific expression patterns and developmental functions.
Histone deacetylases (HDAC) are important in plant gene expression. Here we show that the expression of rice HDAC genes is both tissue/organ-specific, and most of them are responsive to drought or salt stresses. Over-expression of several rice HDACs did not produce any visible phenotype, whereas down-regulation of a few HDAC genes affected different developmental aspects. Specifically, down-regulation of HDA703 by amiRNA reduced rice peduncle elongation and fertility, while inactivation of a closely related homolog HDA710 by RNAi affected vegetative growth. HDA704 RNAi altered plant height and flag leaf morphology. Down-regulation of HDT702 led to the production of narrowed leaves and stems. These data suggest that rice HDAC genes may have divergent developmental functions compared with closely related homologs in Arabidopsis.
Hu
Yongfeng
Y
National Key Laboratory for Crop Genetic Improvement, Huazhong Agricultural University, 430070 Wuhan, China.
Qin
Fujun
F
Huang
Limin
L
Sun
Qianwen
Q
Li
Chen
C
Zhao
Yu
Y
Zhou
Dao-Xiu
DX
D015536:Down-Regulation; D055864:Droughts; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant; D006655:Histone Deacetylases / Q000235:genetics* / Q000502:physiology; D012275:Oryza / Q000201:enzymology* / Q000235:genetics / Q000254:growth & development*; D009997:Osmotic Pressure; D018515:Plant Leaves / Q000201:enzymology / Q000235:genetics / Q000254:growth & development; D034622:RNA Interference
D006655:Histone Deacetylases