History of bacterial ring rot of potato in the Czech Lands and a proposal for relaxation of strict quarantine measures

Kůdela, V.

doi:10.17221/2254-pps

Cited by 4 publications

(5 citation statements)

References 16 publications

(23 reference statements)

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“…Zero incidence of Cms in basic and certified seed potatoes and 0.19% in commercial potato lots was achieved in 2005. However, Cms was detected in 0.15% of seed potato samples and 0.23% of commercial samples a year later, in 2006 (Kůdela 2007). These results confirmed the experiences from other countries, i.e.…”

Section: Detection Of Clavibacter Michiganensis Subsp Sepedonicus Insupporting

confidence: 85%

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Detection of Clavibacter michiganensis subsp. sepedonicus in daughter tubers of volunteer potato plants

Pánková¹,

Krejzar²,

Čepl³

et al. 2007

Plant Prot. Sci.

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Pánková I., Krejzar V., Čepl J., Kůdela V. (2007): Detection of Clavibacter michiganensis subsp. sepedonicus in daughter tubers of volunteer potato plants. Plant Protect. Sci., 43: 127-134.Daughter tubers of volunteer potatoes were tested for their ability to maintain Clavibacter michiganensis subsp. sepedonicus (Cms). In different areas of the CR, volunteer potatoes were searched for in crops grown in rotation with potatoes and where one or two years before Cms had been detected and identified in samples of harvested seed or commercial potatoes using the test scheme in accordance to EC Directive 93/85/EEC. During May and June of 2005 and 2006, emerging or emerged plants of volunteer potatoes were collected at nine locations of Bohemia and transplanted to the experimental field in the Diagnostic Service Laboratory at Šluknov-Kunratice in Northern Bohemia. The daughter tubers of these plants were harvested and stored at 6°C for 1 month and then at 22°C for 3 months for multiplication of Cms cells. Samples of the daughter tubers were divided into 215 partial samples and tested for the occurrence of Cms at five terms which differed in length of storage time. The DAS ELISA test was used to detect Cms in the tuber samples. Cms was detected in eight of the nine potato volunteer tuber samples from different locations. The presence of Cms in positively tested tuber samples was confirmed using a pathogenicity test on eggplants (Solanum melongena). The optimal time for the detection of the pathogen in the harvested daughter tubers was between 4 and 10 weeks of storage at 22°C.

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Section: Detection Of Clavibacter Michiganensis Subsp Sepedonicus Insupporting

confidence: 85%

“…

AbstractPánková I., Krejzar V., Čepl J., Kůdela V. (2007): Detection of Clavibacter michiganensis subsp. sepedonicus in daughter tubers of volunteer potato plants.

…”

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confidence: 99%

Detection of Clavibacter michiganensis subsp. sepedonicus in daughter tubers of volunteer potato plants

Pánková¹,

Krejzar²,

Čepl³

et al. 2007

Plant Prot. Sci.

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“…According to Whitworth et al (2019), knowledge about the type of symptoms and the time of their occurrence on potato plants of new cultivars is important for the producers and manufacturers. The absence of Cs cells in certified seed material does not mean that there will be no positive samples in commercial production (Kudela 2007). According to Pánková et al (2019), the occurrence of samples infected by Cs in fields where all procedures have been followed to prevent the spread of the pathogen prompts the need to undertake tests determining the sensitivity and expression of disease symptoms in cultivated potato.…”

Section: Discussionmentioning

confidence: 99%

Latent Infection by Clavibacter sepedonicus and Correlation with Ring Rot Symptoms Development in Potato Cultivars

2020

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The aim of this study was to determine the response of potato cultivars to Clavibacter sepedonicus (Cs) infection in a field experiment. The research focused on the infection in a latent form as it is a risk for unnoticed spread. A total of 18 cultivars were tested in the years 2013–2016. Symptoms of the disease were observed on the leaves during growth and in tubers after harvest and after storage. The infection incidence was determined by microscopic observation of leaf and tuber samples stained by the IFAS method. A diverse response of potato cultivars to Cs infection was found. The lowest number of asymptomatic infected plants was found in cultivars ‘Vineta’, ‘Bila’ and ‘Irga’. As for cultivar ‘Stasia’, the entire tuber yield was latently infected by Cs. A low or medium concentration of Cs cells in leaves did not change significantly or increased depending on the potato cultivar. A higher incidence of tubers with disease symptoms was found after the storage period. In eight of the cultivars tested, the level of tuber infection by Cs confirmed microscopically after harvest was significantly correlated with the occurrence of disease symptoms in tubers after the storage period.

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“…Even in 1979 Easton (1979) stated that bacterial infestation would lead to a reduction in yield by 50% or more. Kůdela (2007), on the other hand, claimed that the yield decrease by more than 50% is unprecedented in practice.…”

Section: Yield Decreasementioning

confidence: 99%

“…It officially exists in 31 countries on three continents. The problem of potato ring rot is constantly being raised as a disease whose economic losses are not directly related to yield losses (De Boer 1987;Kůdela 2007). The financial losses associated with the occurrence of the disease in a given territory are mainly influenced by: a ban on potato cultivation, export restrictions and controlled control measures covering the entire production area.…”

Section: Introductionmentioning

confidence: 99%

Reaction of selected potato varieties to Clavibacter sepedonicus infestation under changing weather conditions

et al. 2021

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The results of the studies carried out over the last 50 years have not provided a clear answer to questions concerning the interaction between Clavibacter sepedonicus (Cs), potato and the environment. The reason is insufficient knowledge of the biology of the causal agent of ring rot, problems of research methodology and the influence of many environmental and biotic factors on the degree of plant infestation. The research conducted in the years 2013–2016 in the Plant Breeding and Acclimatization Institute – National Research Institute concerned the determination of the influence of weather conditions, involved the influence of temperature and Sielianinov hydrothermal coefficient on the development of Cs bacteria in stems and progeny tubers, as well as the occurrence of disease symptoms on plants and in tubers of eight potato varieties. It was found that genotype had the greatest impact on leaf and tuber infestation, while weather conditions were less significant. The results of correlation analysis indicate that the weight of tubers of plants infected by Cs increased statistically significantly with increases in air and soil temperature. On the other hand, air and soil temperature in the initial vegetation period did not significantly affect the number of potato plant tubers infested by Cs. In a 4-year experiment, it was not shown how air and soil temperature and the Sielianinov hydrothermal coefficient affected the degree of potato leaf and tuber infestation. In most cases, potato infestation by Cs caused a decrease in yield.

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History of bacterial ring rot of potato in the Czech Lands and a proposal for relaxation of strict quarantine measures

Cited by 4 publications

References 16 publications

Detection of Clavibacter michiganensis subsp. sepedonicus in daughter tubers of volunteer potato plants

Detection of Clavibacter michiganensis subsp. sepedonicus in daughter tubers of volunteer potato plants

Latent Infection by Clavibacter sepedonicus and Correlation with Ring Rot Symptoms Development in Potato Cultivars

Reaction of selected potato varieties to Clavibacter sepedonicus infestation under changing weather conditions

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