OCCURRENCE OF NARCISSUS PURPLE BLOTCH CAUSED BY PHYSODERMA NARCISSI IN KHUZISTAN

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MOHAMMADI HABIBEH; MINASIAN VAHEH; MOUSAVI JORF S.A.

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Journal: IRANIAN JOURNAL OF PLANT PATHOLOGY Year:2007 | Volume:43 | Issue:2 (170) Page(s): 266-275

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Title

OCCURRENCE OF NARCISSUS PURPLE BLOTCH CAUSED BY PHYSODERMA NARCISSI IN KHUZISTAN

Author(s)

MOHAMMADI HABIBEH | MINASIAN VAHEH | MOUSAVI JORF S.A. | Issue Writer Certificate

Keywords

NARCISSUSQ3

PHYSODERMA NARCISSIQ3

BEHBAHANQ3

Abstract

Brown to brownish purple spots and blotches were observed on the foliage of NARCISSUS in an ancient NARCISSUS orchard in BEHBAHAN, KHUZISTAN province. Surveys during 2002- 2004 showed that disease symptoms first appeared as small pale yellow spots at the end of fall, late Nov. & early December. Maximum infection and disease symptoms occurred by mid-winter(Table 1), when the foliage and specially stem bases showed large purplish, irregular spots. Microscopic observation of cross sections made from symptomatic tissues revealed the presence of yellowish brown masses of resting sporangia and fine rhizomycelium embedded in the diseased tissue. The sporangia were spherical to sub-spherical smoothwalled with small depressions on the surface as if pitted and measured 16-24 μm in diameter. Attempts to germinate freshly collected current season`s resting sporangia failed, indicating that the fungus requires overwintering or rather a period of maturation. Good germination of resting spores was obtained when spore suspensions prepared by blending of previous year,s diseased tissue were kept in refrigerator (6-9 C°) for a few days or up to one month and then transferred to room temperature and exposed to illumination. The sporangia have circular cap (operculum) that was discharged to release zoospores after exposure to low temperature. Based on the morphological features of the resting sporangia and the rhizomycelium with turbinate cells, the causal agent of the disease was identified as PHYSODERMA NARCISSI (G. Poirrault) Sacc. & Trotter (Chytridiomycota). According to the literature this disease has been reported previously only once from France in 1915 (Poirrault, 1915). Specimens of diseased plants are kept under accession No. of "IRAN 2031 F" at the herbarium of Ministry of Agriculture (Jehad e Keshavarzi) Iranian Research Institute of Plant Protection.

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APA: Copy

MOHAMMADI, HABIBEH, MINASIAN, VAHEH, & MOUSAVI JORF, S.A.. (2007). OCCURRENCE OF NARCISSUS PURPLE BLOTCH CAUSED BY PHYSODERMA NARCISSI IN KHUZISTAN. IRANIAN JOURNAL OF PLANT PATHOLOGY, 43(2 (170)), 266-275. SID. https://sid.ir/paper/48229/en

Vancouver: Copy

MOHAMMADI HABIBEH, MINASIAN VAHEH, MOUSAVI JORF S.A.. OCCURRENCE OF NARCISSUS PURPLE BLOTCH CAUSED BY PHYSODERMA NARCISSI IN KHUZISTAN. IRANIAN JOURNAL OF PLANT PATHOLOGY[Internet]. 2007;43(2 (170)):266-275. Available from: https://sid.ir/paper/48229/en

IEEE: Copy

HABIBEH MOHAMMADI, VAHEH MINASIAN, and S.A. MOUSAVI JORF, “OCCURRENCE OF NARCISSUS PURPLE BLOTCH CAUSED BY PHYSODERMA NARCISSI IN KHUZISTAN,” IRANIAN JOURNAL OF PLANT PATHOLOGY, vol. 43, no. 2 (170), pp. 266–275, 2007, [Online]. Available: https://sid.ir/paper/48229/en

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