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Temporal and spatial expression analysis of PRGL in Gerbera hybrida

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Abstract

GASA-like genes form multigene families in diverse plant species and encode the proteins with a unique cysteine-rich domain (GASA domain). In our previously work, we cloned a GASA-like gene PRGL (Proline-rich GASA-like) from gerbera. Here we report the expression profiles of PRGL and the subcellular localization of PRGL protein. Multiple sequence alignment of the GASA domains indicates that PRGL shows the highest homology to AtPRGL (73.3% of amino acid identity) from Arabidopsis. Phylogenic analysis based on the full amino acid sequences indicates that PRGL and AtPRGL belong to a novel subfamily of GASA proteins. Northern blot assay showed that PRGL is highly expressed in young flower, young leaf and young root, whereas hardly detected when these organs became mature. Furthermore, in young inflorescence, PRGL transcript accumulation only occurred in the fast elongation organs such as scape, ray floret petal and disc floret petal. Western blot and immunolocalization assay revealed that PRGL protein is located in cell wall and high level accumulation of PRGL was found to correlate with the fast organ elongation in scape. Our results suggest that PRGL participates in the regulation of cell elongation during the development of Gerbera hybrida plant.

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Acknowledgements

This research was supported by grants from Nature Science Foundation of China (No. 30570165) and Guangdong Natural Science Foundation in China (No. 9251063101000002, 2006A20101007).

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  1. Guangdong Provincial Key Lab of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, 510631, Guangzhou, China

    Jianzong Peng, Liujing Lai & Xiaojing Wang

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  1. Jianzong Peng
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  2. Liujing Lai
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Correspondence to Xiaojing Wang.

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Peng, J., Lai, L. & Wang, X. Temporal and spatial expression analysis of PRGL in Gerbera hybrida . Mol Biol Rep 37, 3311–3317 (2010). https://doi.org/10.1007/s11033-009-9917-4

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  • DOI: https://doi.org/10.1007/s11033-009-9917-4

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