Agdia also provides virus and other pathogen screening in their laboratories. Blight may be used for specific plant parts, for example leaf blight. A yellow, or pale green, condition of normally green tissue due to low chlorophyll levels. Chlorosis may be caused by nutrient deficiencies, low light conditions and plant diseases.
Chlorotic tissue is a common symptom of virus infection.
Also sometimes described as a thumbprint or bull's eye pattern. A swollen underground stem that serves as a propagative structure in Crocus, Gladiolus, Cyclamen, and other plants. Epinasty is different from wilting in that the tissues aren't suffering from lack of water, but are misshapen from uneven cell growth on one side of the plant part. The University of Maryland Home and Garden Information Center provides answers to gardening questions for the citizens of Maryland through an 800 number staffed by trained Master Gardeners and extension specialists. The plants that are attacked by a particular pathogen.