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Quantitative Comparison of cis-Regulatory Element (CRE) Activities in Transgenic Drosophila melanogaster

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Published on: December 19, 2011

Ca-Responsive cis-Elements in Plants.

Aliza Finkler¹, Boaz Kaplan, Hillel Fromm

¹Department of Plant Sciences; Faculty of Life Sciences; Tel Aviv University; Tel Aviv, Israel.

Plant Signaling & Behavior

|August 26, 2009

Summary

Calcium ions (Ca2+) act as crucial second messengers in plants, mediating environmental responses. This study identifies specific DNA regulatory elements responsible for translating Ca2+ signals into gene expression changes.

Keywords:

abscisic acid calcium gene expression signal transduction stress responses transcription factors

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Area of Science:

Plant biology
Molecular biology
Biochemistry

Background:

External stimuli trigger cellular responses in plants via signal transduction pathways.
Calcium ions (Ca2+) function as vital second messengers in eukaryotes, including plants, regulating diverse cellular processes.
Understanding the DNA elements that control Ca2+-mediated gene expression is crucial but remains limited.

Purpose of the Study:

To identify and characterize cis-acting DNA regulatory elements involved in calcium-responsive gene expression in plants.
To elucidate the mechanisms by which cytosolic Ca2+ transients are communicated to the transcriptional machinery.

Main Methods:

Bioinformatic analysis to predict potential DNA regulatory elements.
Experimental validation of identified cis-elements.
Integration of computational and empirical data.

Main Results:

Discovery of specific DNA regulatory elements that mediate the effects of Ca2+ transients on gene expression.
Demonstration that these elements link cytosolic Ca2+ signaling to the plant transcription machinery.

Conclusions:

The identified cis-elements are key components in the plant calcium signaling pathway.
This research provides novel insights into the molecular basis of Ca2+-responsive gene regulation in plants.