Alternaria longipes

brown spot of tobacco

Alternaria brassicae var. tabaci, Alternaria tenuis f.sp. tabaci, Macrosporium longipes

Africa: Angola, Congo, Egypt, Kenya, Madagascar, Malawi, Mauritius, Morocco, Mozambique, Reunion, Somalia, South Africa, Sudan, Tanzania, Uganda, Zambia, Zimbabwe; Asia: Afghanistan, Bangladesh, China, Hong Kong, India, Indonesia, Israel, Japan, Malaysia, Nepal, North Korea, Oman, Pakistan, Singapore, Taiwan, Thailand, Turkey; Europe: Belgium, Bulgaria, Germany, Hungary, Italy, Netherlands, Poland, Portugal, Romania, Spain; North America: Canada, Dominican Republic, Haiti, Jamaica, Mexico, Panama, Puerto Rico, USA; Oceania: Australia, Fiji, New Zealand, Papua New Guinea; south America: Argentina, Bolivia, Brazil, Colombia, Venezuela.

CT, FL, GA, MN, NC, OR, PA, SC, VA

2025-10-29

fungus

Korea

Main: tobacco; Other: sunflower, potato

ALTELO

Alternaria longipes primarily infects tobacco, the only host of economic concern, causing brown leaf spot and significant foliar damage. It is transmitted via wind, rain splash, and contaminated plant debris, producing dark spores that thrive in warm, humid conditions. Seed is not known to be a pathway.