ROOT, STEM, BULB AND RHIZOME-LIKE TUBER ROT OF SEVERAL ORNAMENTAL PLANTS CAUSED BY PHITOPHTHORA NICOTIANAE IN IRAN

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MIRABOU ALFATHI M.

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Paper Information

Journal: IRANIAN JOURNAL OF PLANT PATHOLOGY Year:2002 | Volume:38 | Issue:1-2 Page(s): 69-82

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Information Journal Paper

Title

ROOT, STEM, BULB AND RHIZOME-LIKE TUBER ROT OF SEVERAL ORNAMENTAL PLANTS CAUSED BY PHITOPHTHORA NICOTIANAE IN IRAN

Author(s)

MIRABOU ALFATHI M. | Issue Writer Certificate

Keywords

PHYTOPHTHORA NICOTIANAEQ4

MORPHOLOGYQ3

PHYSIOLOGYQ3

ESTERASEQ4

PATHOGENICITYQ4

ALSTROEMERIAQ2

LILIUMQ2

ROSAQ4

DIEFFENBACHIAQ4

PEPEROMIAQ4

Abstract

In recent years seeds, bulls, rhizomes and seedlings of ornamental plants have been imported accompanied by some important phytopathogenic agents. PHYTOPHTHORA NICOTIANAE van Breda de Hann was the causal agent of root, stem, bulb and, rhizome-like tuber rot of imported and home products of Rose, LILIUM longiflorum, DIEFFENBACHIA amonea, PEPEROMIA obtusifolia, ALSTROEMERIA hookeri. Mentioned above isolates of P. nicotianae were compared morphologically, physiologically, and isozymicaly. Colony MORPHOLOGY of the isolates on CMAwas dense or loose rosette, lanose, and intermediate between rosette or stellate and lanose. Chlamidospores were formed abundantly in PEPEROMIA and DIEFFENBACHIA isolates, spherical, 27.4-34.3 µm in diameter. Sporangia were produced abundantly in liquidand solid cultures singlyor in a loose sympodium on long stalk predominantly sphaerical and ovoid with a prominent papilla, 34.5-54.04 longx27.2-38.2µm wide (average), with length, breadth ration 1.24-1.43, noncaducous, Diffenbachia isolates produced sporangia often attached to sporangiophore laterally and a few sphaerical sporangia had two papillae. Most isolates were heterothallic but PEPEROMIA isolates produced oogonia and oospores when paired with either Al or A2 mating type of P. nicotianae. Antheridia were amphigynous and sphaerical, 13.3xI1.6µmin diameter. Oogonia were smoth and sphaerical,29.2µ,m in diameter. Oospores were sphaerical, aplerotic, pale yellow when matured, 23.6µm in diameter. The minimumtemperature for growthwas less than 10"C,the optimum was 29-33°C,most isolatesexcept Diffenbachiaones grownwellat 35°C. The electrophoretic estrase patterns for all isolates were similar using protein polyacrilamid gel electrophoresis. In PATHOGENICITY tests allP. nicotianae isolates were founded to be pathogenic on their hosts. The isolates were reisolated from infected plants.

Cites

IDENTIFICATION AND PATHOGENICITY OF FUNGI SPECIES CAUSING ROOT ROT IN PEPPER IN WEST AZARBAIJAN PROVINCE

References

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APA: Copy

MIRABOU ALFATHI, M.. (2002). ROOT, STEM, BULB AND RHIZOME-LIKE TUBER ROT OF SEVERAL ORNAMENTAL PLANTS CAUSED BY PHITOPHTHORA NICOTIANAE IN IRAN. IRANIAN JOURNAL OF PLANT PATHOLOGY, 38(1-2), 69-82. SID. https://sid.ir/paper/48241/en

Vancouver: Copy

MIRABOU ALFATHI M.. ROOT, STEM, BULB AND RHIZOME-LIKE TUBER ROT OF SEVERAL ORNAMENTAL PLANTS CAUSED BY PHITOPHTHORA NICOTIANAE IN IRAN. IRANIAN JOURNAL OF PLANT PATHOLOGY[Internet]. 2002;38(1-2):69-82. Available from: https://sid.ir/paper/48241/en

IEEE: Copy

M. MIRABOU ALFATHI, “ROOT, STEM, BULB AND RHIZOME-LIKE TUBER ROT OF SEVERAL ORNAMENTAL PLANTS CAUSED BY PHITOPHTHORA NICOTIANAE IN IRAN,” IRANIAN JOURNAL OF PLANT PATHOLOGY, vol. 38, no. 1-2, pp. 69–82, 2002, [Online]. Available: https://sid.ir/paper/48241/en

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