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Arabidopsis TRANSPARENT TESTA GLABRA2 is directly regulated by R2R3 MYB transcription factors and is involved in regulation of GLABRA2 transcription in epidermal differentiation 总被引:6,自引:0,他引:6 下载免费PDF全文
Ishida T Hattori S Sano R Inoue K Shirano Y Hayashi H Shibata D Sato S Kato T Tabata S Okada K Wada T 《The Plant cell》2007,19(8):2531-2543
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Susheng Song Bei Liu Junqiao Song Shihai Pang Tianxue Song Shang Gao Yue Zhang Huang Huang Tiancong Qi 《植物学报(英文版)》2022,64(9):1770-1788
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The HD-Zip IV gene GaHOX1 from cotton is a functional homologue of the Arabidopsis GLABRA2 总被引:3,自引:0,他引:3
Most of the plant homeodomain-containing proteins play important roles in organ patterning and development, and Arabidopsis GLABRA2 (GL2), a member of the class IV homeodomain-leucine zipper (HD-ZIP) proteins, is a trichome and non-root hair cell regulator. Here we report the analysis of two cotton homeodomain-containing proteins, GaHOX1 and GaHOX2, isolated from the diploid cotton Gossypium arboreum . Both GaHOX1 and GaHOX2 belong to the class IV HD-ZIP family. When expressed under the control of the GL2 promoter, GaHOX1 rescued trichome development of an Arabidopsis glabrous mutant of gl2-2 (SALK_130213), whereas GaHOX2 did not. On the other hand, expression of GaHOX1 with a Cauliflower mosaic virus (CaMV) 35S promoter in the wild-type Arabidopsis plants suppressed the trichome development just as the GL2 ectopic expression. Expression analysis by Northern, RT-PCR and in situ hybridization indicated that GaHOX1 is predominantly expressed in cotton fiber cells at early developmental stages, consistent with its putative role in regulating cotton fiber development, while GaHOX2 is expressed in both fiber and other ovular tissues, including outer and inner integuments. Our results suggest that GaHOX1 is a functional homolog of GL2 in plant trichome development. 相似文献
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GL3 encodes a bHLH protein that regulates trichome development in arabidopsis through interaction with GL1 and TTG1 总被引:23,自引:0,他引:23
Arabidopsis trichome development and differentiation is a well-studied model for plant cell-fate determination and morphogenesis. Mutations in TRANSPARENT TESTA GLABRA1 (TTG1) result in several pleiotropic defects including an almost complete lack of trichomes. The complex phenotype caused by ttg1 mutations is suppressed by ectopic expression of the maize anthocyanin regulator R. Here it is demonstrated that the Arabidopsis trichome development locus GLABRA3 (GL3) encodes an R homolog. GL3 and GLABRA1 (GL1) interact when overexpressed together in plants. Yeast two-hybrid assays indicate that GL3 participates in physical interactions with GL1, TTG1, and itself, but that GL1 and TTG1 do not interact. These data suggest a reiterated combinatorial model for the differential regulation of such diverse developmental pathways as trichome cell-fate determination, root hair spacing, and anthocyanin secondary metabolism. 相似文献
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Wang S Kwak SH Zeng Q Ellis BE Chen XY Schiefelbein J Chen JG 《Development (Cambridge, England)》2007,134(21):3873-3882
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A single amino acid substitution in the R3 domain of GLABRA1 leads to inhibition of trichome formation in Arabidopsis without affecting its interaction with GLABRA3 下载免费PDF全文
Xuemei Dai Limei Zhou Wei Zhang Ling Cai Hongyan Guo Hainan Tian John Schiefelbein Shucai Wang 《Plant, cell & environment》2016,39(4):897-907