Perennial ryegrass (Lolium perenne L.), widely cultivated in the cool-season for forage supply and turfgrass, is extremely susceptible to high temperatures. A recent study has discovered a pivotal stress-responsive gene, combating heat stress in perennial ryegrass. Perennial ryegrass (Lolium perenne L.), widely cultivated in the cool-season for forage supply and turfgrass, is extremely susceptible to high temperatures. A recent study has discovered a pivotal stress-responsive gene, combating heat stress in perennial ryegrass. Molecular & Computational biology Agriculture Phys.org – latest science and technology news stories