Bacterial diseases of potato and their control

Baştaş, Kubilay Kurtuluş

doi:10.1016/b978-0-12-822925-5.00017-7

Cited by 3 publications

(2 citation statements)

References 156 publications

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“…Th e predominance of vegetative potato propagation results in accumulating pathogens in planting material in a latent form due to successive tuber-stem-tuber cycles and thus leads to seed potato degeneration and the reduction in yield and/or quality [5][6][7]. Potato, particularly stored tubers, is aff ected by about seven bacterial diseases including bacterial soft rot and blackleg, as well as ring rot being serious dangers [8,9].…”

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“…Nowadays, potato soft rot and blackleg caused by pectolytic bacteria along with potato ring rot caused by C. sepedonicus receive increased attention. Potato growing industry harm wreaked by ring rot, soft rot, and blackleg necessitates deep insight into the biology of the causal agents including the impact of environmental factors on the degree of plant infestation, which is very important for the epidemiology of the diseases [8]. Tuber infestation by rot pathogens depends on various genetic features, as well as on many environmental factors including air and soil temperature, air and soil humidity, etc.…”

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Latent Infestation of Potato Tubers with Soft Rot and Ring Rot Pathogens under Changing Weather Conditions in Ukraine

Hrytseva,

Skivka

2023

Mikrobiol. Z.

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Potato is one of the most important food crops in the world. Cultivation of potatoes is an important segment of the agriculture and economy as a whole in Ukraine. Bacterial diseases such as ring rot caused by Clavibacter sepedonicus, as well as soft rot and blackleg caused by Pectobacterium atrosepticum evoke tremendous losses of the potato crop. Stored seed tubers are the main source of accumulating pathogens in latent form. In addition, potato crop yield and quality are significantly affected by weather conditions. Along with affecting potatoes directly, meteorological factors such as air temperature and humidity can also impact tuber infestation with bacterial pathogens. The aim of the study was to monitor the prevalence of bacterial ring rot pathogen C. sepedonicus and soft rot pathogen P. atrosepticum in potato tubers on the territory of Ukraine in 2020 and 2021 years and assess its association with different weather conditions. Methods. Potato seed lots from newly harvested crops in eight regions of Ukraine (Odesa, Kyiv, Donetsk, Kherson, Cherkasy, Mykolaiv, Dnipropetrovsk, and Zhytomyr regions) without visual symptoms of diseases were used for the experiments. The detection of C. sepedonicus and P. atrosepticum was conducted by the immunochemical method DAS ELISA. Basal meteorological data (the sum of precipitation (mm/month) and average air temperature (°C) were obtained from the local meteorological stations. The amplitude of air temperature and the sum of precipitation during potato planting, growing, and harvesting seasons, as well as Sielianinov’s hydrothermal coefficient (K) were additionally calculated. The Spearman correlation coefficient was used for the analysis of the correlation between pathogen prevalence and weather parameters. Results. Both ring rot pathogen C. sepedonicus and soft rot pathogen P. atrosepticum were detected in potato lots from all surveyed regions, but the prevalence of latent infestation varied between 2020 and 2021. In 2020, the highest soft rot pathogen prevalence values were registered for Mykolaiv, Kyiv, and Cherkasy regions (21.7, 10.5, and 10% respectively), where high rainfall levels in May and June were observed. In 2021, potato planting, growing, and harvesting seasons were marked by significantly higher precipitation levels, as compared to 2020, in all regions. Average occurrence values for P. atrosepticum in potato lots were 1.7 times higher than that in 2020. The highest prevalence (40%) was observed in the Donetsk region with extremely high air humidity during the potato growing period. Strong positive correlation (r = 0.721) was found between soft rot pathogen prevalence and K coefficients during the potato growing season, as well as between P. atrosepticum prevalence and the sum of precipitation during planting and early growing seasons. Prevalence of ring rot pathogen didn’t differ significantly in 2020 and 2021. The highest C. sepedonicus prevalence was observed in 2020 in the Kyiv region (18.9%), and in 2021 — in the Donetsk region (20%). A moderate positive correlation (r = 0.591) was found between pathogen prevalence and air temperature during planting and early growing season. Conclusions. Weather factors such as air temperature and humidity over the planting and early growing potato season can influence progeny tuber infestation with P. atrosepticum and C. sepedonicus. Knowledge of the effect of the changing weather conditions on the susceptibility of potato varieties with different genetic features to infestation with soft rot and ring rot pathogens warrants future investigation since it is crucially important for developing measures for disease control by potato producers.

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Latent Infestation of Potato Tubers with Soft Rot and Ring Rot Pathogens under Changing Weather Conditions in Ukraine

Hrytseva,

Skivka

2023

Mikrobiol. Z.

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Barcoding of Life for Detection and Diagnosis of Diseases and Pests in Potato

Yadav,

Khurana

et al. 2024

Approaches for Potato Crop Improvement and Stress Management

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CRISPR/Cas9 genome editing of potato StDMR6-1 results in plants less affected by different stress conditions

Karlsson,

Kieu,

Lenman

et al. 2024

Horticulture Research

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Potato is the third most important food crop, but cultivation is challenged by numerous diseases and adverse abiotic conditions. To combat diseases, frequent fungicide application is common. Knocking out susceptibility genes by genome editing could be a durable option to increase resistance. DMR6 has been described as a susceptibility gene in several crops, based on data that indicates increased resistance upon interruption of the gene function. In potato, Stdmr6-1 mutants have been described to have increased resistance against the late blight pathogen Phytophthora infestans in controlled conditions. Here, we present field evaluations of CRISPR/Cas9 mutants, in a location with a complex population of P. infestans, during four consecutive years that indicate increased resistance to late blight without any trade-off in terms of yield penalty or tuber quality. Furthermore, studies from potato tubers from the field trials indicated increased resistance to common scab, and the mutant lines exhibit increased resistance to early blight pathogen Alternaria solani in controlled conditions. Early blight and common scab are problematic targets in potato resistance breeding, as resistance genes are very scarce. The described broad-spectrum resistance of Stdmr6-1 mutants may further extend to some abiotic stress conditions. In controlled experiments of either drought simulation or salinity, Stdmr6-1 mutant plants are less affected than the background cultivar. Together, these results demonstrate the prospect of the Stdmr6-1 mutants as a useful tool in future sustainable potato cultivation without any apparent trade-offs.

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Bacterial diseases of potato and their control

Cited by 3 publications

References 156 publications

Latent Infestation of Potato Tubers with Soft Rot and Ring Rot Pathogens under Changing Weather Conditions in Ukraine

Latent Infestation of Potato Tubers with Soft Rot and Ring Rot Pathogens under Changing Weather Conditions in Ukraine

Barcoding of Life for Detection and Diagnosis of Diseases and Pests in Potato

CRISPR/Cas9 genome editing of potato StDMR6-1 results in plants less affected by different stress conditions

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