Abstract
Cardinal flower (Lobelia cardinalis L.: Campanulaceae) is a wildflower common throughout much of the eastern United States and grows in a variety of habitats. It is used as an ornamental plant because its bright red flowers appear in the fall and attract hummingbirds. The foliage is generally free of disease when the plant is not flowering, although a few leaf and stem lesions may be present during the growing season. In August/September 2016 and 2017, plants established in eastern Tennessee developed numerous spots on stems and leaves. The round- to lenticular-shaped lesions had dry, white, papery necrotic centers surrounded by reddish-purple host tissue. There were no signs of a pathogen. Leaves were washed in running water for 5 min, surface disinfested with 1.05% NaClO for 15 min, and rinsed three times in sterile water. Lesions and some green tissue from leaves were transferred to half-strength potato dextrose agar (PDA) augmented with 10 mg rifampicin/liter, and incubated in the dark. Mycelium was i...
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
