Structure and specific expression of a Nicotiana sylvestris putative amino-acid transporter gene in mature and in vitro germinating pollen.

Structure and specific expression of a Nicotiana sylvestris putative amino-acid transporter gene... We report here the structure and expression analysis of a Nicotiana sylvestris gene, called nsaap1, coding for a protein which shows significant identity to the members of the Arabidopsis thaliana amino acid permease family. The nsaap1 gene is expressed exclusively in binucleate pollen. Its transcripts begin to accumulate after first pollen mitosis and dramatically increase in mature pollen shortly before anthesis and during in vitro pollen germination. The nsaap1 5′-flanking region contains long regions homologous to the promoter region of the tobacco pollen specific eIF-4A8 translation factor. Our results support the occurrence of an amino acid remobilization in binucleate pollen. The nsaap1 gene could play a role in exchanges between the vegetative and the generative pollen cells. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Structure and specific expression of a Nicotiana sylvestris putative amino-acid transporter gene in mature and in vitro germinating pollen.

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 1997 by Kluwer Academic Publishers
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1023/A:1005812419151
Publisher site
See Article on Publisher Site

Abstract

We report here the structure and expression analysis of a Nicotiana sylvestris gene, called nsaap1, coding for a protein which shows significant identity to the members of the Arabidopsis thaliana amino acid permease family. The nsaap1 gene is expressed exclusively in binucleate pollen. Its transcripts begin to accumulate after first pollen mitosis and dramatically increase in mature pollen shortly before anthesis and during in vitro pollen germination. The nsaap1 5′-flanking region contains long regions homologous to the promoter region of the tobacco pollen specific eIF-4A8 translation factor. Our results support the occurrence of an amino acid remobilization in binucleate pollen. The nsaap1 gene could play a role in exchanges between the vegetative and the generative pollen cells.

Journal

Plant Molecular BiologySpringer Journals

Published: Sep 30, 2004

References

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