Gibberellins and Light-Stimulated Seed Germination

  title={Gibberellins and Light-Stimulated Seed Germination},
  author={Shinjiro Yamaguchi and Yuji Kamiya},
  journal={Journal of Plant Growth Regulation},
Bioactive gibberellins (GAs) promote seed germination in a number of plant species. In dicots, such as tomato and Arabidopsis, de novo GA biosynthesis after seed imbibition is essential for germination. Light is a crucial environmental cue determining seed germination in some species. The red (R) and far-red light photoreceptor phytochrome regulates GA biosynthesis in germinating lettuce and Arabidopsis seeds. This effect of light is, at least in part, targeted to mRNA abundance of GA 3-oxidase… CONTINUE READING