چروکیده یا صاف؟ مکانیک رشد سلولی شکل اندام های گیاه را تعیین می کند

Wrinkled or smooth? Cell growth mechanics determine shape of plant organs

When inner and outer cell layers of sepals—the leaf-like plant organs that cover and protect the flower bud before it opens—all grow upward, the organs stay smooth and uniformly stiff, which is optimal for the plant, according to a new study.