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Published on: December 31, 2012
Cell Communication, Stochastic Cell Responses, and Anthocyanin Pattern in Mustard Cotyledons
P. Nick1, B. Ehmann, M. Furuya
1Laboratory of Plant Biological Regulation, Frontier Research Program, Riken Institute, Hirosawa 2-1, Wako-shi, 351-01 Saitama, Japan.
The Plant Cell
|May 1, 1993
Summary
Intercellular signals regulate plant development. Localized light exposure triggers patchy anthocyanin production in mustard cotyledons, which is then organized by long-range inhibitory signals into a whole-organ pattern.
Area of Science:
- Plant biology
- Photomorphogenesis
- Cell signaling
Background:
- Plant development is influenced by intercellular communication.
- Phytochrome-mediated responses, like anthocyanin synthesis, are crucial for photomorphogenesis.
- Understanding signal integration is key to deciphering developmental patterns.
Purpose of the Study:
- To investigate the role of intercellular signals in plant development.
- To elucidate how localized light signals are integrated into a whole-organ response.
- To model photomorphogenesis using anthocyanin production in white mustard.
Main Methods:
- Utilized a microbeam technique to irradiate specific subregions of white mustard cotyledons.
- Employed in situ hybridization to detect chalcone synthase mRNA distribution.
- Analyzed individual cell responses and their integration at the whole-organ level.
Main Results:
- Observed all-or-none responses in individual cells during early anthocyanin synthesis, creating a stochastic pattern.
- Demonstrated that long-range inhibitory signals integrate these individual cell responses.
- Revealed the emergence of ordered, gradual patterns at later stages of development.
Conclusions:
- Intercellular signals play a critical role in organizing cell-autonomous responses into coordinated developmental patterns.
- The findings provide insights into the mechanisms of photomorphogenesis.
- This study offers a framework for understanding signal integration in plant development.
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