Pyrenophora tritici-repentis
leaf spot of wheat
Drechslera tritici-repentis, Drechslera tritici-vulgaris, Helminthosporium gramineum f.sp. tritici-repentis, Helminthosporium tritici-repentis, Helminthosporium tritici-vulgaris, Pleospora culmorum, Pleospora sarcosystis, Pleospora trichostoma, Pleospora trichostoma f.sp. tritici-repentis, Pyrenophora sarcocystis, Pyrenophora trichostoma, Pyrenophora tritici-vulgaris, Pleospora tritici-repentis
Worldwide
Widespread
2021-04-27 16:05:34
fungus
Korea
wheat, barley, rye, triticale, oat, corn
PYRNTR
5 Known Hosts
Triticum aestivum
wheat
Yes
PYRNTR-2,PYRNTR-3,PYRNTR-4,PYRNTR-6
Seed contamination has been shown to affect seed quality and germination in laboratory tests. Transmission of the fungus was demonstrated, but only to cotyledon stage of the plant or was done with artificially inoculated plants. Reduction to seedling vigor has been demonstrated but seed borne inoculum appears insignificant in disease development.
Yes
Blotter test
PYRNTR-1,PYRNTR-4
Fungicide seed treatments
Effectiveness varied with different fungicides and amount of fungicides applied. Resistant varieties are available.
PYRNTR-1
Fernandez MR, DePauw RM, Clarke JM and Lefkovitch LP, 1996. Red smudge in durum wheat reduces seedling vigour. Canadian Journal of Plant Science, 76:321-324
Fernandez MR, Clarke JM, DePauw RM and Lefkovitch LP, 1997. Emergence and growth of durum wheat derived from red smudge-infected seed. Crop Science, 37:510-514;
A. M. C. Schilder AMC, and Bergstrom GC. 1995. ,Seed transmission of Pyrenophora tritici-repentis, causal fungus of tan spot of wheat, European Journal of Plant Pathology 101: 81–91
Wiese, MV. 1977. Compendium of Wheat Diseases. APS Press, The American Phytopathological Society.St. Paul, MN
Pyrenophora tritici-repentis. In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Hordeum vulgare
barley
No
No references found indicating seed is a pathway. Very few reports of barley being a host of this pathogen and is likely a minor host.
Secale cereale
rye
No
No references found indicating seed is a pathway.
Avena sativa
oat
No
No references found indicating seed is a pathway. There are only two reports that oat is a host for this pathogen (USDA ARS)
Zea mays
corn
No
No references found indicating seed is a pathway. Only one report of this fungus on corn from China (USDA ARS). There is no other evidence that corn is a host.
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