A novel stress-related gene in developing pepper anthers

A novel stress-related gene in developing pepper anthers To study gene expression patterns and to find genes related with microspore embryogenesis during pepper (Capsicum annuum L.) anther development, mRNA expression patterns were investigated at four developmental stages distinguished according to the size of flower bud, the color of anthers, and the cytological feature of microspores. Through GeneFishing using 120 random primers, 81 genes were found to be differentially expressed as anthers develop. We directly sequenced seven of them, which were either up- or down-regulated at stage 2, since microspores at stage 2 are known to be responsive to the induction signals for microspore embryogenesis. Nucleotide sequence analysis of the isolated differentially expressed genes (DEGs) and the comparison of these sequences with the GenBank data indicate that DEG13 is a novel gene, which is highly homologous to a stress-related gene of potato, POACT88 (≈91%) and to alcohol dehydrogenase gene of Arabidopsis (≈70%), whose expression is also tightly related to stresses. In vitro data also showed that DEG13 was more abundantly expressed in heat-treated microspores than in untreated microspores. Here, we report developmental stage-specific gene expression patterns during anther development and a novel stress-related gene, DEG13, which may be involved in microspore embryogenesis in response to heat treatment. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

A novel stress-related gene in developing pepper anthers

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2009 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Sciences ; Plant Physiology
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443709050112
Publisher site
See Article on Publisher Site

Abstract

To study gene expression patterns and to find genes related with microspore embryogenesis during pepper (Capsicum annuum L.) anther development, mRNA expression patterns were investigated at four developmental stages distinguished according to the size of flower bud, the color of anthers, and the cytological feature of microspores. Through GeneFishing using 120 random primers, 81 genes were found to be differentially expressed as anthers develop. We directly sequenced seven of them, which were either up- or down-regulated at stage 2, since microspores at stage 2 are known to be responsive to the induction signals for microspore embryogenesis. Nucleotide sequence analysis of the isolated differentially expressed genes (DEGs) and the comparison of these sequences with the GenBank data indicate that DEG13 is a novel gene, which is highly homologous to a stress-related gene of potato, POACT88 (≈91%) and to alcohol dehydrogenase gene of Arabidopsis (≈70%), whose expression is also tightly related to stresses. In vitro data also showed that DEG13 was more abundantly expressed in heat-treated microspores than in untreated microspores. Here, we report developmental stage-specific gene expression patterns during anther development and a novel stress-related gene, DEG13, which may be involved in microspore embryogenesis in response to heat treatment.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Sep 8, 2009

References

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