A novel stress-related gene in developing pepper anthers |
| |
Authors: | Y Lee K Chae J Ha J S Lee I C Jang S Jeong M Kim M Yoon |
| |
Institution: | (1) Faculty of Agriculture, Iwate University, Morioka 020-8550, Japan;(2) National Institute of Vegetable and Tea Science, Mie 514-2392, Japan; |
| |
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. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|