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Occurrence of Anthracnose on Chinese Mallow Caused by Colletotrichum malvarum.

Kim WG, Hong SK, Kim JH - Mycobiology (2008)

Bottom Line: Anthracnose symptoms were frequently observed on leaves, petioles, and stems of Chinese mallow grown in Namyangju, Korea, during a disease survey performed in November, 2007.The disease incidence was as high as 30% in the 12 greenhouses investigated.In this study, mycological and pathological characteristics of C. malvarum identified as causing anthracnose of Chinese mallow were clarified.

View Article: PubMed Central - PubMed

Affiliation: Plant Pathology Division, National Institute of Agricultural Science and Technology, Rural Development Administration, Suwon 441-707, Korea.

ABSTRACT
Anthracnose symptoms were frequently observed on leaves, petioles, and stems of Chinese mallow grown in Namyangju, Korea, during a disease survey performed in November, 2007. The disease incidence was as high as 30% in the 12 greenhouses investigated. A total of 38 isolates of the Colletotrichum species were obtained from the anthracnose symptoms, and all the isolates were identified as Colletotrichum malvarum based on their morphological and culture characteristics. Three isolates of the fungus caused anthracnose symptoms on leaves and stems following artificial inoculation, which were similar to those observed during the greenhouse survey. In this study, mycological and pathological characteristics of C. malvarum identified as causing anthracnose of Chinese mallow were clarified.

No MeSH data available.


Related in: MedlinePlus

Anthracnose symptoms on Chinese mallow plants observed in the greenhouse. A, grayish brown spots on the leaves; B, brown to dark brown lesions on the petioles and stems; C and D, lesions on the stems originating from the soil surface line.
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Figure 1: Anthracnose symptoms on Chinese mallow plants observed in the greenhouse. A, grayish brown spots on the leaves; B, brown to dark brown lesions on the petioles and stems; C and D, lesions on the stems originating from the soil surface line.

Mentions: Chinese mallow (Malva verticillata L.) is widely grown in the temperate and subtropical regions of the world. The plant is commonly cultivated in Korea as one of the vegetables used for cooking soybean paste soup. Anthracnose symptoms were frequently observed on leaves, petioles, and stems of Chinese mallow grown in Namyangju, Korea, during a disease survey performed in November, 2007. The symptoms appeared as circular to irregular grayish brown spots on the leaves (Fig. 1A) and sunken, ellipsoidal to elongated, brown to dark brown lesions on the petioles and stems (Fig. 1B). Sometimes, the lesions on the stems originated from the soil surface line and developed upward (Fig. 1C and 1D). Severely infected plant parts began to develop dark brown discoloration and were blighted at the later stages of disease development. Pale yellow conidial masses were produced on the lesions. The incidence of the disease reached as high as 30% of the infected plants in nine out of the twelve greenhouses investigated.


Occurrence of Anthracnose on Chinese Mallow Caused by Colletotrichum malvarum.

Kim WG, Hong SK, Kim JH - Mycobiology (2008)

Anthracnose symptoms on Chinese mallow plants observed in the greenhouse. A, grayish brown spots on the leaves; B, brown to dark brown lesions on the petioles and stems; C and D, lesions on the stems originating from the soil surface line.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3755237&req=5

Figure 1: Anthracnose symptoms on Chinese mallow plants observed in the greenhouse. A, grayish brown spots on the leaves; B, brown to dark brown lesions on the petioles and stems; C and D, lesions on the stems originating from the soil surface line.
Mentions: Chinese mallow (Malva verticillata L.) is widely grown in the temperate and subtropical regions of the world. The plant is commonly cultivated in Korea as one of the vegetables used for cooking soybean paste soup. Anthracnose symptoms were frequently observed on leaves, petioles, and stems of Chinese mallow grown in Namyangju, Korea, during a disease survey performed in November, 2007. The symptoms appeared as circular to irregular grayish brown spots on the leaves (Fig. 1A) and sunken, ellipsoidal to elongated, brown to dark brown lesions on the petioles and stems (Fig. 1B). Sometimes, the lesions on the stems originated from the soil surface line and developed upward (Fig. 1C and 1D). Severely infected plant parts began to develop dark brown discoloration and were blighted at the later stages of disease development. Pale yellow conidial masses were produced on the lesions. The incidence of the disease reached as high as 30% of the infected plants in nine out of the twelve greenhouses investigated.

Bottom Line: Anthracnose symptoms were frequently observed on leaves, petioles, and stems of Chinese mallow grown in Namyangju, Korea, during a disease survey performed in November, 2007.The disease incidence was as high as 30% in the 12 greenhouses investigated.In this study, mycological and pathological characteristics of C. malvarum identified as causing anthracnose of Chinese mallow were clarified.

View Article: PubMed Central - PubMed

Affiliation: Plant Pathology Division, National Institute of Agricultural Science and Technology, Rural Development Administration, Suwon 441-707, Korea.

ABSTRACT
Anthracnose symptoms were frequently observed on leaves, petioles, and stems of Chinese mallow grown in Namyangju, Korea, during a disease survey performed in November, 2007. The disease incidence was as high as 30% in the 12 greenhouses investigated. A total of 38 isolates of the Colletotrichum species were obtained from the anthracnose symptoms, and all the isolates were identified as Colletotrichum malvarum based on their morphological and culture characteristics. Three isolates of the fungus caused anthracnose symptoms on leaves and stems following artificial inoculation, which were similar to those observed during the greenhouse survey. In this study, mycological and pathological characteristics of C. malvarum identified as causing anthracnose of Chinese mallow were clarified.

No MeSH data available.


Related in: MedlinePlus