THE ARABIDOPSIS ATHB-2 AND ATHB-4 GENES ARE STRONGLY INDUCED BY FAR-RED-RICH LIGHT

被引：139

作者：

CARABELLI, M ^{[1
]}

SESSA, G ^{[1
]}

BAIMA, S ^{[1
]}

MORELLI, G ^{[1
]}

RUBERTI, I ^{[1
]}

机构：

[1] IST NAZL NUTR,UNITA NUTR SPERIMENTALE,I-00178 ROME,ITALY

来源：

PLANT JOURNAL | 1993年 / 4卷 / 03期

关键词：

D O I：

10.1046/j.1365-313X.1993.04030469.x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The isolation and characterization of the Athb-2 gene, which codes for a HD-Zip protein in Arabidopsis thaliana is reported. Interestingly, Southern analysis has established that the Arabidopsis genome contains sequences which are highly related to the Athb-2 HD-Zip coding region. One of these genes, designated Athb-4, has been cloned and partially sequenced. Amino acid sequence comparison revealed that Athb-2 and -4 are members of a small family of HD-Zip related proteins. Athb-2 mRNA analysis showed that this gene is expressed during the vegetative and reproductive phases of plant growth. A significant increment in the amount of Athb-2 transcripts was observed in flowering plants. A higher steady-state level of the Athb-2 mRNA was also found in dark-adapted plants. Remarkably, far-red-rich light treatment of Arabidopsis plants results in a rapid and strong induction of the Athb-2 expression. This light treatment also induces the accumulation of Athb-4 transcripts, suggesting a similar role for the two members of this HD-Zip family.

引用

页码：469 / 479

页数：11

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