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GIBBERELLIN REPORTER

Seeing is believing

Gibberellins (GAs) control key growth and developmental processes in plants. Real-time monitoring of GA concentrations in living tissues is critical for understanding the actions of this hormone class. A first-generation optogenetic GA-nano-indicator now illuminates the effects of GA levels on cell length and light signalling.

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Competing interests

The authors declare no competing financial interests.

Correspondence to Tamar Azoulay-Shemer or Julian I. Schroeder.

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Fig. 1: Real-time monitoring of GA concentrations in individual cells in plant tissues.