+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

First Report of Hainesia lythri Causing Leaf Spots of Paeonia suffruticosa in China

First Report of Hainesia lythri Causing Leaf Spots of Paeonia suffruticosa in China

Plant Disease 92(3): 486

Tree peony (Paeonia suffruticosa) is known as "the king of flowers" for its beautiful and showy flowers. It is regarded as the symbol flower of China and is cultivated throughout the country. During the summer of 2006, a leaf spot was observed on tree peony cultivated in the Zhengzhou area of Henan Province, and in 2007, the leaf spot was observed in the Luoyang area. In some gardens, the leaf spot affected more than 50% of the plants. Early symptoms appeared as small, round, water-soaked lesions on the leaves. Lesions expanded into 5 to 35-mm-diameter spots that were circular or irregular, brown to dark brown, with pale brown margins. Later, the center of some lesions dropped out. Signs of the suspected pathogen were usually seen on the leaf spots after an abundant rainfall. Lesions contained numerous, pale brown, cupulate conidiomata with salmon-colored spore masses. Conidiophores (70 × 1 to 2 μm) were hyaline, branched, septate, and filiform. Conidia (5.5 to 7.5 × 1.5 to 2 μm) were hyaline, aseptate, and cymbiform to allantoid. The pathogen was identified as Hainesia lythri on the basis of the morphology. This fungus infects a wide variety of hosts including P. suffruticosa, Acer pseudoplatanus, Calluna sp., Dissotis paucistellata, Epilobium angustifolium, and Eucalyptus saligna (3). The fungus was isolated on potato dextrose agar (PDA) medium using conidia from conidiomata found on symptomatic leaf tissue; the fungus produced gray-to-brown colonies. Pathogenicity was tested by inoculating 10 leaves on one 5-year-old tree with a mycelia plug from the colony (0.5 cm in diameter); leaves inoculated with plugs of PDA medium served as controls. Inoculated leaves were covered with plastic for 24 h to maintain high relative humidity and incubated at 25 to 28°C. After 5 days, 100% of the inoculated leaves showed symptoms identical to those observed on leaves from P. suffruticosa infected in the field while controls remained symptom free. Reisolation of the fungus from lesions on inoculated leaves confirmed that the causal agent was H. lythri. Thus, we concluded that H. lythri is the causal agent of leaf spots of P. suffruticosa. To our knowledge, this is the first report of H. lythri infecting P. suffruticosa in China. H. lythri has been previously reported on Paeonia in Japan and Korea (1,2). References: (1) W. D. Cho and H. D. Shin, eds. List of Plant Diseases in Korea. 4th ed. Korean Society of Plant Pathology, 2004. (2) M. E. Palm. Mycologia 83:787, 1991. (3) B. C. Sutton. The Coelomycetes. CAB International Publishing, New York, 1980.

Please choose payment method:

(PDF emailed within 1 workday: $29.90)

Accession: 066500337

Download citation: RISBibTeXText

PMID: 30769709

Related references

First report of Hainesia lythri causing leaf spots of Paeonia suffruticosa in China. 2008

Hainesia lythri, wound pathogen, causing leaf lesions on eucalyptus seedlings in Brazil. Fitopatologia Brasileira 23(3): 415-419, 1998

A leaf blight of Eucalyptus seedlings in South African nurseries caused by Hainesia lythri. South African Forestry Journal (136): 22-25, 1986

First report of tan-brown rot (Hainesia lythri) on strawberry fruits in Poland. Phytopathologia Polonica (31): 57-60, 2004

First report of Pilidium concavum on Paeonia suffruticosa in China. Plant Disease: 2, 271, 2010

Hainesia lythri on Strawberry-a new record for India. Indian Phytopath. 18: 3, 237-239, 1965

Pezizella oenotherae (conidial state: Hainesia lythri). CMI Descriptions of Pathogenic Fungi and Bacteria (535): 2, 1977

Hainesia lythri, a possible biocontrol agent for thimbleberry in British Columbia forests. Phytopathology 82(10): 1080, 1992

Taxonomy and morphology of the synanamorphs pilidium concavum and hainesia lythri coelomycetes. Mycologia 83(6): 787-796, 1991

Taxonomic studies of Alternaria from china 12 Three taxa on Paeonia suffruticosa. Mycotaxon 103: 269-272, 2008

Taxonomic studies of Alternaria from China 12 Three taxa on Paeonia suffruticosa. Mycotaxon3: 269-272, 2008

Taxonomic studies of Alternaria from China 12 Three taxa on Paeonia suffruticosa. Mycotaxon3: 269-272, 2008

Hainesia rythri von H hn causing zonate leaf spot of tree peony. Mycobiology 28(4): 229, 2000

The ecological characteristics of the endangered species Paeonia suffruticosa var. spontanea in China. Natural Areas Journal 27(2): 145-154, 2007

Ontomorphogenesis of shrubs belonging to the genus Paeonia L. i. paeonia suffruticosa Andr. Moscow University Biological Sciences Bulletin 1(5-6): 76-82, 1976