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Splice Site Requirements and Switches in Plants

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Nuclear pre-mRNA Processing in Plants

Part of the book series: Current Topics in Microbiology and Immunology ((CT MICROBIOLOGY,volume 326))

Intron sequences in nuclear pre-mRNAs are excised with either the major U2 snRNA-dependent spliceosomal pathway or the minor U12 snRNA-dependent spliceosomal pathway that exist in most eukaryotic organisms. While the predominant dinucleotides bordering each of these types of introns and the catalytic mechanism used in their excision are conserved in plants and animals, several features aiding in the recognition of plant introns are distinct from those in animals and yeast. Along with their short length, high AU content and high variation in their 5′ and 3′ splice sites and branchpoint consensus sequences are the most prominent characteristics of plant introns. Detailed surveys of site-directed mutant introns tested in vivo and chemically induced and naturally mutant introns analyzed in planta emphasize the effects of changing individual nucleotides in these splice site consensus sequences and highlight a number of noncanonical dinucleotides that are functional in plant systems.

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Authors and Affiliations

  1. Departments of Cell and Developmental Biology, Biochemistry and Plant Biology, University of Illinois, Urbana, IL, 61801, USA

    M. A. Schuler

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  1. M. A. Schuler
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  1. Department of Biology and Program in Molecular Plant Biology, Colorado State University, Fort Collins, CO, 80523, USA

    Anireddy S. N. Reddy

  2. Department of Microbiology, Thomas Jefferson University, Philadelphia, PA, 19107, USA

    Maxim Golovkin

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Schuler, M.A. (2008). Splice Site Requirements and Switches in Plants. In: Reddy, A.S.N., Golovkin, M. (eds) Nuclear pre-mRNA Processing in Plants. Current Topics in Microbiology and Immunology, vol 326. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-76776-3_3

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