Abstract
The pre-mRNA processing (Prp1) gene encodes a spliceosomal protein. It was firstly identified in fission yeast and plays a regular role during spliceosome activation and cell cycle. Plant Prp1 genes have only been identified from rice, Sorghum and Arabidopsis thaliana. In this study, we reported the identification and isolation of a novel Prp1 gene from barley, and further explored its expressional pattern by using real-time quantitative RT-PCR, promoter prediction and analysis of microarray data. The putative barley Prp1 protein has a similar primary structure features to those of other known Prp1 protein in this family. The results of amino acid comparison indicated that Prp1 protein of barley and other plant species has a highly conserved 3′ termnal region while their 5′ sequences greatly varied. The results of expressional analysis revealed that the expression level of barley Prp1 gene is always stable in different vegetative tissues, except it is up-regulated at the mid- and late stages of seed development or under the condition of cold stress. This kind of expressional pattern for barley Prp1 is also supported by our results of comparison of microarray data from barley, rice and Arabidopsis. For the molecular mechanism of its expressional pattern, we conclude that the expression of Prp1 gene may be up-regulated by the increase of pre-mRNAs and not be constitutive or ubiquitous.
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Acknowledgments
This work was supported by China Transgenic Research Program (2011ZX08002-001), the National Natural Science Foundation of China (31000167) and the National Basic Research Program of China (973 Program 2010 CB134400).
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The authors Qian-Tao Jiang and Tao Liu contributed equally to this paper.
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Jiang, QT., Liu, T., Ma, J. et al. Characterization of barley Prp1 gene and its expression during seed development and under abiotic stress. Genetica 139, 1283–1292 (2011). https://doi.org/10.1007/s10709-012-9630-4
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DOI: https://doi.org/10.1007/s10709-012-9630-4