Phytochrome‐hormonal signalling networks

<jats:title>Summary</jats:title><jats:p>Through time, plants have evolved an extraordinary ability to interpret environmental cues. One of the most reliable of these cues is light, and plants are particularly adept at sensing and translating environmental light signals. The phytochrome family of photoreceptors monitor cues such as daylength or vegetative shade and adjust development to reflect change in these parameters. Indeed, it is their ability to coordinate these complex developmental changes that underpins the remarkable success of plants. Evidence is mounting that hormones control many of these light‐mediated changes. Therefore, if we are to understand how light manipulates development we need to explore the interplay between light and hormonal signalling. Toward this goal, this review highlights the known convergence points of the phytochrome and the hormonal networks and explores their interactions. <jats:table-wrap position="anchor"> <jats:table frame="void"> <jats:col /> <jats:col /> <jats:col /> <jats:thead> <jats:tr> <jats:th /> <jats:th>Contents</jats:th> <jats:th /> </jats:tr> </jats:thead> <jats:tbody> <jats:tr> <jats:td /> <jats:td>Summary</jats:td> <jats:td>449</jats:td> </jats:tr> <jats:tr> <jats:td>I.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#ss3">Introduction</jats:ext-link></jats:td> <jats:td>449</jats:td> </jats:tr> <jats:tr> <jats:td>II.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#ss4">The phytochrome protein</jats:ext-link></jats:td> <jats:td>450</jats:td> </jats:tr> <jats:tr> <jats:td>III.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#ss5">Bacteriophytochromes</jats:ext-link></jats:td> <jats:td>450</jats:td> </jats:tr> <jats:tr> <jats:td>IV.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#ss6">IBacteriophytochrome signalling</jats:ext-link></jats:td> <jats:td>450</jats:td> </jats:tr> <jats:tr> <jats:td>V.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#ss7">Plant phytochrome signalling</jats:ext-link></jats:td> <jats:td>451</jats:td> </jats:tr> <jats:tr> <jats:td>VI.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#ss8">Ethylene perception and signalling</jats:ext-link></jats:td> <jats:td>451</jats:td> </jats:tr> <jats:tr> <jats:td>VII.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#ss10">Cytokinin perception and signalling</jats:ext-link></jats:td> <jats:td>452</jats:td> </jats:tr> <jats:tr> <jats:td>VIII.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#ss12">Brassinosteroid perception and signalling</jats:ext-link></jats:td> <jats:td>453</jats:td> </jats:tr> <jats:tr> <jats:td>IX.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#ss14">Gibberellin signalling</jats:ext-link></jats:td> <jats:td>455</jats:td> </jats:tr> <jats:tr> <jats:td>X.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#ss16">Auxin signalling</jats:ext-link></jats:td> <jats:td>456</jats:td> </jats:tr> <jats:tr> <jats:td>XI.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#ss20">Proteolysis in light and hormonal signalling</jats:ext-link></jats:td> <jats:td>458</jats:td> </jats:tr> <jats:tr> <jats:td>XII.</jats:td> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#ss24">Conclusion</jats:ext-link></jats:td> <jats:td>459</jats:td> </jats:tr> <jats:tr> <jats:td /> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#ss25">Acknowledgements</jats:ext-link></jats:td> <jats:td>459</jats:td> </jats:tr> <jats:tr> <jats:td /> <jats:td><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#ss26">References</jats:ext-link></jats:td> <jats:td>459</jats:td> </jats:tr> </jats:tbody> </jats:table> </jats:table-wrap> </jats:p>