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长日照植物白芥从营养生长向生殖生长转变过程中基因表达的早期变化

Early Changes in Gene Expression during the Transition from Vegetative to Generative Growth in the Long-Day Plant Sinapis alba.

作者信息

Melzer S., Majewski D. M., Apel K.

机构信息

Botanisches Institut der Christian-Albrechts-Universitat Kiel, Olshausenstrasse 40-60, D-2300 Kiel, Federal Republic of Germany.

出版信息

Plant Cell. 1990 Oct;2(10):953-961. doi: 10.1105/tpc.2.10.953.

DOI:10.1105/tpc.2.10.953
PMID:12354947
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC159944/
Abstract

Changes in gene expression during flower formation were studied in the long-day plant Sinapis alba. The day length dependence was exploited to synchronize flower formation in a large population of mustard plants. After an inductive light treatment, apices were harvested after different lengths of time, and changes in gene expression were analyzed. Two major groups of genes were identified whose expression was affected during flower formation. Transcripts of the first group (group I) were present at low concentration in the apex of noninduced plants. They began to accumulate strongly after the end of the inductive light period. They reached a maximum 2 days to 10 days after flower induction and then declined slowly. Transcripts of the second group of genes (group II) could be detected for the first time 10 days after flower induction. Within a very short time, these transcripts accumulated dramatically and reached a maximum 15 days after flower induction before beginning to decline. They dropped beyond the limit of detection before the flower reached maturity.

摘要

在长日照植物白芥中研究了花形成过程中的基因表达变化。利用日照长度依赖性使大量芥菜植株的花形成同步。经过诱导光照处理后，在不同时间长度后采集顶端，分析基因表达的变化。鉴定出两组主要基因，其表达在花形成过程中受到影响。第一组基因（I组）的转录本在未诱导植株的顶端以低浓度存在。在诱导光照期结束后，它们开始强烈积累。在花诱导后2天至10天达到最大值，然后缓慢下降。第二组基因（II组）的转录本在花诱导后10天首次被检测到。在很短的时间内，这些转录本急剧积累，并在花诱导后15天达到最大值，然后开始下降。在花成熟之前，它们下降到检测限以下。