Potential of Cross-infection of Colletotrichum Species Causing Anthracnose in Persimmon and Pepper

Kim, Hye-Ryoung; Lim, Tae Heon; Kim, Joo Hyung; Kim, Young Ho; Kim, Heung Tae

doi:10.5423/ppj.2009.25.1.013

Cited by 10 publications

(4 citation statements)

References 21 publications

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“…Colletotrichum is a fungal genus comprising a large number of endophytic, saprophytic, and plant pathogenic species. It is one of the most economically important plant pathogenic genera that causes anthracnose disease of fruits and leaves in a wide range of hosts, resulting in severe crop reduction and conspicuous postharvest losses of tropical and subtropical cereals, grasses, legumes, vegetables, and tree fruits. − For this reason species belonging to this genus have been the subject of extensive studies involving their pathogenesis, morphology, multigene analysis, physiology, host range, and disease life cycle. However, because of the large size of the genus, the production of secondary metabolites by various species is only partially explored (for a review, see Carcía-Paión and Collado, 2003) .…”

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Higginsianins A and B, Two Diterpenoid α-Pyrones Produced by Colletotrichum higginsianum, with in Vitro Cytostatic Activity

et al. 2015

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Two new diterpenoid α-pyrones, named higginsianins A (1) and B (2), were isolated from the mycelium of the fungus Colletotrichum higginsianum grown in liquid culture. They were characterized as 3-[5a,9b-dimethyl-7-methylene-2-(2-methylpropenyl)dodecahydronaphtho[2,1-b]-furan-6-ylmethyl]-4-hydroxy-5,6-dimethylpyran-2-one and 4-hydroxy-3-[6-hydroxy-5,8a-dimethyl-2-methylene-5-(4-methylpent-3-enyl)decahydronaphthalen-1-ylmethyl]-5,6-dimethylpyran-2-one, respectively, by using NMR, HRESIMS, and chemical methods. The structure and relative configuration of higginsianin A (1) were confirmed by X-ray diffractometric analysis, while its absolute configuration was assigned by electronic circular dichroism (ECD) experiments and calculations using a solid-state ECD/TDDFT method. The relative and absolute configuration of higginsianin B (2), which did not afford crystals suitable for X-ray analysis, were determined by NMR analysis and by ECD in comparison with higginsianin A. 1 and 2 were the C-8 epimers of subglutinol A and diterpenoid BR-050, respectively. The evaluation of 1 and 2 for antiproliferative activity against a panel of six cancer cell lines revealed that the IC50 values, obtained with cells reported to be sensitive to proapoptotic stimuli, are by more than 1 order of magnitude lower than their apoptosis-resistant counterparts (1 vs >80 μM). Finally, three hemisynthetic derivatives of 1 were prepared and evaluated for antiproliferative activity. Two of these possessed IC50 values and differential sensitivity profiles similar to those of 1.

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Higginsianins A and B, Two Diterpenoid α-Pyrones Produced by Colletotrichum higginsianum, with in Vitro Cytostatic Activity

et al. 2015

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“…To the best of our knowledge, most individual species in the C. gloeosporioides species complex, such as C. horii, C. fructicola, and C. siamense, may cause persimmon anthracnose [15,16,25] (Figure 1). Moreover, some different plants can be infected by the same anthrax species [14,26], C. acutatum from pepper can cause typical persimmon anthracnose symptoms, showing black spot disease in Korea [27,28]. Thus, these species (C. gloeosporioides is a species complex) are extremely difficult to distinguish on the basis of morphological characteristics only.…”

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Identification of New Sources of Resistance to Anthracnose Caused by Colletotrichum horii among Persimmon Germplasms

Guan

et al. 2022

Horticulturae

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Persimmon (Diospyros kaki) anthracnose, predominantly caused by Colletotrichum horii, is a destructive disease of persimmon. Thus, the evaluation of resistance resources is imperative for persimmon breeding and resistant variety deployment. In this study, the isolate from persimmon branches was identified as C. horii by using molecular and morphological characteristics. A total of 142 varieties were tested for anthracnose disease response by inoculation with the conidial suspension of C. horii. A significant variability was observed among the studied accessions. Only two accessions, which had a hypersensitive reaction with a slight lesion at the infection site at 14 days post inoculation, were highly resistant to anthracnose. A total of 7 and 24 accessions exhibited resistant and susceptible responses, respectively, to anthracnose. A total of 109 varieties with the highest proportion (76.76%) of accessions showed high susceptibility to C. horii. A total of 43 persimmon main cultivars were selected for the re-evaluation of the resistance level by counting the natural disease incidence of branches and fruits that showed similar resistant response. Moreover, nine of highly resistant or resistant accessions possessed desirable agronomic characters, including high fruit weight and strong growth potential. These resistant accessions could be used in the breeding of anthracnose-resistant persimmon varieties.

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“…Reportedly higher concentrations are normally used by some workers. In the tests of C. acutatum isolates on pepper fruits, Kim et al (2009) 6 conidia/ml. We decided to use the concentration of 8.1 × 10 4 conidia/ml as the standard for all further testing of C. acutatum isolates.…”

Section: Effect Of Inoculum Densitymentioning

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Evaluation of safflower varieties for resistance to the fungal pathogen, Colletotrichum acutatum

Víchová¹,

Staňková²,

Pokorný³

et al. 2013

Plant Prot. Sci.

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Víchová J., Staňková B., Pokorný R., Vejražka K. (2013): Evaluation of safflower varieties for resistance to the fungal pathogen, Colletotrichum acutatum. Plant Protect. Sci., 49: 132-136.The influence of plant growth stage, inoculum density, and variety on the disease severity and incidence were studied. Our results indicated that growth stage of the plant had no influence on infection rate, as the pathogen attacked 100% of tested plants. When applying three different inoculum concentrations to three weeks old safflower plants, no statistical differences were recorded, disease incidence ranged 32.0-47.0%. In this test, the 3 rd and 4 th evaluated leaves (the youngest) were infected more intensively than were the 1 st and 2 nd leaves. Among 11 safflower varieties tested for resistance to this pathogen, cultivar CW 1221 manifested the highest resistance with 8.3% infection, whereas two cultivars, Sabina and AC Sunset, were found to be the most susceptible with 90.0 and 83.3% infection.

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Potential of Cross-infection of Colletotrichum Species Causing Anthracnose in Persimmon and Pepper

Cited by 10 publications

References 21 publications

Higginsianins A and B, Two Diterpenoid α-Pyrones Produced by Colletotrichum higginsianum, with in Vitro Cytostatic Activity

Higginsianins A and B, Two Diterpenoid α-Pyrones Produced by Colletotrichum higginsianum, with in Vitro Cytostatic Activity

Identification of New Sources of Resistance to Anthracnose Caused by Colletotrichum horii among Persimmon Germplasms

Evaluation of safflower varieties for resistance to the fungal pathogen, Colletotrichum acutatum

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