NDLI: Characterization of a pollen-preferential gene OSIAGP from rice (Oryza sativa L. subspecies indica) coding for an arabinogalactan protein homologue, and analysis of its promoter activity during pollen development and pollen tube growth

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Characterization of a pollen-preferential gene OSIAGP from rice (Oryza sativa L. subspecies indica) coding for an arabinogalactan protein homologue, and analysis of its promoter activity during pollen development and pollen tube growth

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Characterization of a pollen-preferential gene OSIAGP from rice (Oryza sativa L. subspecies indica) coding for an arabinogalactan protein homologue, and analysis of its promoter activity during pollen development and pollen tube growth

Content Provider	Springer Nature Link
Author	Anand, Saurabh Tyagi, Akhilesh K.
Copyright Year	2009
Abstract	During differential screening of inflorescence-specific cDNA libraries from Oryza sativa indica, an arabinogalactan protein (OSIAGP) cDNA (586 bp) expressing preferentially in the inflorescence has been isolated. It encodes an arabinogalactan protein of 59 amino acids (6.4 kDa) with a transmembrane domain and a secretory domain at the N terminus. The protein shows homology with AGP23 from Arabidopsis, and its homologue in japonica rice is located on chromosome 6. OSIAGP transcripts also accumulate in shoots and roots of rice seedling grown in the dark, but light represses expression of the gene. Analysis of a genomic clone of OSIAGP revealed that its promoter contains several pollen-specificity and light-regulatory elements. The promoter confers pollen-preferential activity on gus, starting from the release of microspores to anther dehiscence in transgenic tobacco, and is also active during pollen tube growth. Analysis of pollen preferential activity of the promoter in the transgenic rice system revealed that even the ~300 bp fragment has activity in pollen and the anther wall and further deletion down to ~100 bp completely abolishes this activity, which is consistent with in-silico analysis of the promoter. Arabinogalactan proteins have been shown to be involved in the cell elongation process. The homology of OSIAGP with AGP23 and the fact that seedling growth in the dark and pollen tube growth are events based on cell elongation strengthen the possibility of OSIAGP performing a similar function.
Starting Page	385
Ending Page	397
Page Count	13
File Format	PDF
ISSN	09628819
Journal	Transgenic Research
Volume Number	19
Issue Number	3
e-ISSN	15739368
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-09-22
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Arabinogalactan protein Pollen-preferential gene Pollen tube Rice Tobacco Transgenic Human Genetics Plant Sciences Animal Genetics and Genomics Plant Genetics & Genomics Molecular Medicine
Content Type	Text
Resource Type	Article
Subject	Genetics Animal Science and Zoology Biotechnology Agronomy and Crop Science

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Characterization of a pollen-preferential gene OSIAGP from rice (Oryza sativa L. subspecies indica) coding for an arabinogalactan-protein homolog and analysis of its promoter activity during pollen development and pollen tube growth

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Characterization of a pollen-preferential gene OSIAGP from rice (Oryza sativa L. subspecies indica) coding for an arabinogalactan protein homologue, and analysis of its promoter activity during pollen development and pollen tube growth

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Characterization of a pollen-preferential gene OSIAGP from rice (Oryza sativa L. subspecies indica) coding for an arabinogalactan protein homologue, and analysis of its promoter activity during pollen development and pollen tube growth