Recent advances relating to the physiological functions of the different forms of phytochrome
are reviewed and guidelines for extending these concepts to account for the behaviour of …

▪ Abstract Light control of plant development is most dramatically illustrated by seedling
development. Seedling development patterns under light (photomorphogenesis) are distinct …

Carotenoids are present in most tissues of higher plants where they play a variety of
essential roles. To study the regulation of carotenoid biosynthesis, we have isolated novel …

Tomato high pigment (hp) mutants are characterized by their exaggerated
photoresponsiveness. Light-grown hp mutants display elevated levels of anthocyanins, are …

Cultivated tomatoes (Solanum lycopersicum L.) produce anthocyanins in vegetative tissues
and certain flavonols can be found in the fruit. Some related wild species do produce …

We have characterized a far-red-light response that induces a novel pathway for plastid
development in Arabidopsis seedlings. This response results in the inability of cotyledons to …

The MYB transcription factor is one of the largest gene families in plants, playing an
important role in regulating plant growth, development, response to stress, senescence, and …

The committed step in the biosynthesis of the phytochrome chromophore phytochromobilin
involves the oxidative cleavage of heme by a heme oxygenase (HO) to form biliverdin IXα …

Photomorphogenesis of tomato (Lycopersicon esculentum Mill.) is being studied with the aid
of mutants which are modified either in their photoreceptor composition or in their signal …

Phytochrome chromophore‐deficient mutants have been used as phytochrome‐deficient
plants to study many aspects of plant development. However, there are still a number of …