Lolium perenne
perennial ryegrass
2 Related Pests
Cladosporium cladosporioides
fungus
Cladosporium graminum, Cladosporium herbarum, Mycosphaerella schoenoprasi, Mycosphaerella tulasnei, Mycosphaerella tassiana, Penicillium cladosporioides, Hormodendrum cladosporioides, Monilia humicola
Africa: Egypt, South Africa; Asia: Bangladesh, China, India, Iran, Israel, Oman, Saudi Arabia, South Korea, Syria; Europe: France, Hungary, Italy; North America: USA; South America: Argentina, Brazil
IA, OR
Korea
2025-10-07
This pathogen is considered primarily a post harvest pathogen that does not cause disease in most of it's hosts (CLADCL-1). C. cladosporioides spreads primarily by wind, rain splash, or contaminated surfaces. It can also persist on plant debris, some seeds, and stored produce, serving as inoculum for new infections. The fungus thrives in cool, moist environments and is especially common in greenhouses, storage areas, and outdoor crops during humid seasons.
Wide host range
No
CLADCL-3
Cladosporium cladosporioides has been detected on perennial ryegrass seeds in laboratory surveys, but there is no evidence that it is transmitted through seed under natural conditions. The fungus is primarily a post-harvest saprophyte that survives on crop residues and field debris, and its presence on seeds likely reflects incidental contamination rather than a true seed-borne pathway. Reports from commercially grown seed do not indicate that seeds serve as a pathway for this fungus.
CLADCL-3
Blotter incubation
CLADCL-3
This test was used for research purposes and has not been standardized or validated.
Zhang Y, Han JG, Bolkan H and Shi QH, 2006. The mycoflora of perennial ryegrass seed and their effects on the germination and seedling vigour. Seed Science and Technology, 34:429-441.
Barley yellow dwarf virus
virus
barley yellow dwarf luteoviruses, cereal yellow dwarf virus, Hordeum virus nanescens, maize leaf fleck virus, red leaf disease of barley, rice giallume virus, wheat cereal yellow dwarf virus
Worldwide
AL, CA, CO, ID. IL, IN, LA, MO, MT, NY, PA, SC, WA
-
2024-09-25
Barley yellow dwarf virus is reported to be transmitted by at least twenty-five aphids.
Main: oats, barley, ryegrass, rice, rye, wheat, corn; Other: poaceae family
No
CABICPC, DPVWEB
Seed is not known to be a pathway.
CABICPC, DPVWEB
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