Black Spot of Sweet Persimmon (Diospyros kaki) Caused by Alternaria alternata

Kwon, Jin-Hyeuk; Ahn, Gwang Hwan; Park, Chang Seuk

doi:10.5423/rpd.2004.10.3.183

Research in Plant Disease

2004

DOI: 10.5423/rpd.2004.10.3.183

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Black Spot of Sweet Persimmon (Diospyros kaki) Caused by Alternaria alternata

Jin-Hyeuk Kwon¹,

Gwang Hwan Ahn²,

Chang Seuk Park³

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“…This suggests that it has a possibility to outbreak in some environmental conditions favorable for the disease development. A variety of crops other than the cactus are infected with A. alternata, including safflower (leaf spot) (Park and Lee, 2003), kiwifruit (brown ring spot on leaves) (Jeong et al, 2008), and sweet persimmon (black spot) (Kwon et al, 2004). However, this is the first report that Alternaria alternata is a causal pathogen of the stem disease of the grafted cactus.…”

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First Report of Black Spot Caused by Alternaria alternata on Grafted Cactus

Choi¹,

Kim²,

Hyun³

et al. 2010

The Plant Pathology Journal

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A stem spot disease was observed on Gymnocalycium mihanovichii (Korean name: Bimoran), a scion of graftcactus, in major growing areas of Goyang and Eumseong, Korea during 2008 and 2009. Typical symptoms were initial blackish brown lesions produced mainly on areoles and scars of injured stem tissues, gradually becoming large black spots. A causal organism isolate CD2-7A isolated from the infected stems was identified as Alternaria alternata based on its morphological characteristics and confirmed by the DNA sequencing analysis of ITS, glyceraldehydes-3-phosphate dehydrogenase (gpd), and allergen Alt a1 (Alt a 1) genes. Artificial inoculation of the fungal isolate CD2-7A produced the same rot symptoms on the cactus stems, from which the same fungus was isolated and identified. This is the first report of the black spot caused by A. alternata in the grafted cactus.

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First Report of Black Spot Caused by Alternaria alternata on Grafted Cactus

Choi¹,

Kim²,

Hyun³

et al. 2010

The Plant Pathology Journal

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Incidence and Etiology of Postharvest Fungal Diseases of Persimmon (Diospyros kakiThunb. cv. Rojo Brillante) in Spain

et al. 2015

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11'Rojo Brillante' is currently the most important persimmon cultivar in Spain. The incidence 12 and etiology of postharvest diseases affecting this cultivar were determined under local 13 conditions. Latent and wound pathogens were assessed for two consecutive seasons on 14 commercially grown persimmons from two orchards. Healthy persimmons were either 15 surface-disinfested or artificially wounded on the rind and placed in humid chambers at 20 16 or 25ºC for up to 9 weeks. Additionally, decay was assessed on commercially handled 17 persimmons stored at 1ºC for up to 20 weeks. In all cases, the most frequent disease was 18 alternaria black spot (ABS) caused by Alternaria alternata and an ABS severity index 19 specific for 'Rojo Brillante' persimmons was established. Other minor pathogens causing 20 latent infections, mostly stem-end rots, included Botrytis cinerea, Lasiodiplodia 21 theobromae, Neofusicoccum spp., Pestalotiopsis clavispora, and Colletotrichum 22 Palou et al. Plant Dis. harm to fruit quality. This deastringency procedure, based on the application of carbon 41 dioxide (CO 2 ) concentrations as high as 95-98% at 20ºC for 24 h (Arnal and del Río 2003) 42allows Spanish persimmon to be commercialized with a crisp texture that has been accepted 43 by major export markets (EU countries such as Germany,

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Black Spot of Sweet Persimmon (Diospyros kaki) Caused by Alternaria alternata

Cited by 2 publications

References 2 publications

First Report of Black Spot Caused by Alternaria alternata on Grafted Cactus

First Report of Black Spot Caused by Alternaria alternata on Grafted Cactus

Incidence and Etiology of Postharvest Fungal Diseases of Persimmon (Diospyros kakiThunb. cv. Rojo Brillante) in Spain

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