MADISON, Wisconsin, Jan. 10 -- The University of Wisconsin Madison campus issued the following news: Photoreceptors help seedlings detect when they have reached ample sunlight, when to stop elongating their stems and when to begin photosynthesis to produce energy. Photo by ArtRachen01/iStock University of Wisconsin-Madison researchers have discovered where an important photoreceptor acts within plant stems, and the finding could help growers improve the success rate of crops like soybeans. Published in the journal Current Biology, the resear more PR