Mango Malformation Disease in South China Caused by Fusarium proliferatum

A total of 13 Fusarium isolates were obtained from samples of malformed mango seedlings from Yunnan and Sichuan provinces in China, and five morphologically similar isolates were confirmed causing the disease by satisfying Koch’s postulates. One typical isolate (MG4) was selected for detailed morpho...

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Bibliographic Details
Published in:Journal of phytopathology 2010-12, Vol.158 (11-12), p.721-725
Main Authors: Zhan, Ru-Lin, Yang, Shun-Jin, Ho, Hon-Hing, Liu, Feng, Zhao, Yan-Long, Chang, Jin-Mei, He, Yan-Biao
Format: Article
Language:English
Subjects:
abnormal plant growth
Agar
Biological and medical sciences
Chlamydospores
Colonies
Conidia
Fundamental and applied biological sciences. Psychology
Fungal plant pathogens
Fusarium proliferatum
Gibberella intermedia
Heads
Huapinh County
Leaves
Malformation disease
Mangifera indica
Nucleotide sequence
Oryza sativa
Panzhihua City
Pathogens
Phytopathology. Animal pests. Plant and forest protection
Pigments
Seedlings
Sichuan Province
Solanum tuberosum
Sucrose
tropical disease
Yunnan Province
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Summary:A total of 13 Fusarium isolates were obtained from samples of malformed mango seedlings from Yunnan and Sichuan provinces in China, and five morphologically similar isolates were confirmed causing the disease by satisfying Koch’s postulates. One typical isolate (MG4) was selected for detailed morphological and molecular studies. Based on the following morphological characteristics, isolate MG4 was identified as Fusarium proliferatum: white aerial mycelium on PSA (potato sucrose agar: potato 200 g; sucrose 15 g; agar 18 g; distilled water 1000 ml) medium; hyaline reverse of colonies on PSA; production of pink pigment on rice medium and the production of conidia on branched conidiophore with monophialides bearing false heads of conidia. On carnation leaf agar medium, the microconidia were ovate to elongated ovoid, 0–1 septate, 3.1–10.2 × 1.5–2.2 μm; the macroconidia were fusiform, 3–5 septate, 18–38 × 1.8–2.4 μm, whereas chlamydospores and sexual structures were absent on all media used. The identity of the pathogen was confirmed by its high similarity (99.8–100%) in the sequence alignment of rDNA‐ITS 1 and 4 with both isolates of F. proliferatum in the GenBank database.
ISSN:0931-1785
1439-0434
DOI:10.1111/j.1439-0434.2010.01688.x