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Expression and cellular localization of rab28 mRNA and Rab28 protein during maize embryogenesis 总被引:2,自引:1,他引:1
Marie Françoise Niogret Francisco A. Culiáñez-Macià Adela Goday M. Mar Albà Montserrat Pagès 《The Plant journal : for cell and molecular biology》1996,9(4):549-557
The maize abscisic acid (ABA) responsive gene rab 28, has been shown to be ABA-inducible in embryos and vegetative tissues. A polyclonal antiserum was raised against Rab28 protein. Using immunoblotting and immunoprecipitation, the antiserum specifically recognized a protein of about 30 kDa and pl 6 which is in close agreement with the molecular weight and pl predicted by the deduced amino acid sequence. The rab 28 gene product accumulated during late embryogenesis. In vegetative tissues, dehydration stress induced rab 28 gene expression both in the light and in the dark. The spatial and temporal pattern of rab 28 mRNA expression during embryogenesis was investigated by in situ hybridization using digoxigenin-labelled rab 28 probes, and the immunochemical localization of Rab28 protein using anti-Rab28 antibodies. Expression of rab 28 mRNA is restricted to provascular tissues in young embryos, and at later stages of development the most prevalent accumulation occurred in meristem and in the vascular elements of the plumule, root and scutellum. Using immunoelectron microscopy the Rab28 protein has been located in the nucleolus of different cell types. In light of these results the stress regulation of rab 28 and a likely role for this protein during late embryogenesis are discussed. 相似文献
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Four Arabidopsis AREB/ABF transcription factors function predominantly in gene expression downstream of SnRK2 kinases in abscisic acid signalling in response to osmotic stress
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TAKUYA YOSHIDA YASUNARI FUJITA KYONOSHIN MARUYAMA JUNRO MOGAMI DAISUKE TODAKA KAZUO SHINOZAKI KAZUKO YAMAGUCHI‐SHINOZAKI 《Plant, cell & environment》2015,38(1):35-49