Black scurf disease on potato caused by AG3 occurs worldwide and is difficult to control. The use of potato cultivars resistant to black scurf disease could be part of an integrated control strategy. Currently, the degree of resistance is based on symptom assessment in the field, but molecular measures could provide a more efficient screening method. We hypothesized that the degree of field resistance to black scurf disease in potato cultivars is associated with defense-related gene expression levels and salicylic acid (SA) concentration. Cultivars with a moderate and severe appearance of disease symptoms on tubers were selected and cultivated in the same field. In addition, experiments were conducted under controlled conditions in an axenic in vitro culture and in a sand culture to analyze the constitutive expression of defense-related genes and SA concentration. The more resistant cultivars did not show significantly higher constitutive expression levels of defense-related genes. Moreover, the level of free SA was increased in the more resistant cultivars only in the roots of the plantlets grown in the sand culture. These results indicate that neither expression levels of defense-related genes nor the amount of SA in potato plants can be used as reliable predictors of the field resistance of potato genotypes to black scurf disease.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10669363 | PMC |
| http://dx.doi.org/10.3390/bioengineering10111244 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The potato, being an underground vegetable crop, faces consistent threats from soil- and tuber-borne fungal and bacterial pathogens. Black scurf and stem canker disease caused by the fungal pathogen Kuhn is a critical global concern in the potato cultivation system. In this study, we evaluated the disease mitigation potential of five systemic acquired resistance-inducing chemicals , salicylic acid, jasmonic acid, -aminobutyric acid, -aminobutyric acid and hydrogen peroxide (HO).
View Article and Find Full Text PDFComparison of rDNA-ITS Sequences, Vegetative Compatibility, Biological Characteristics, and Thifluzamide Sensitivity of AG-3 PT, TM, and TB Subgroup Isolates Collected from Potato and Tobacco in China.
Plant Dis
November 2024
Shenyang Agricultural University, College of Plant Protection, 120 Dongling Road, Shenhe District, Shenyang, Liaoning Province, China, Shenyang, China, 110161;
Article Synopsis
- Potato black scurf and tobacco target spot are caused by AG-3, which consists of three subgroups (PT, TM, and TB) that correspond to their host plants: potato, tomato, and tobacco.
- A study analyzed 129 tobacco and 80 potato AG-3 isolates from various regions in China, finding that potato isolates belonged to the PT subgroup, while tobacco isolates were classified into TM and TB subgroups.
- The research highlighted genetic variations among these subgroups, differences in their biological characteristics and pathogenicity, and noted that AG-3 PT showed the most somatic incompatibility, with distinct differences observed in colony color and morphology.
Application of Asteraceae biomass and biofertilizers to improve potato crop health by controlling black scurf disease.
Front Plant Sci
September 2024
Jiangxi Key Laboratory for Sustainable Utilization of Chinese Materia Medica Resources, Lushan Botanical Garden, Chinese Academy of Science, Jiujiang, Jiangxi, China.
Potato ( L.) cultivation in Pakistan faces challenges, with black scurf disease caused Kühn being a significant concern. Conventional methods like chemical fungicides partially control it, but an effective solution is lacking.
View Article and Find Full Text PDFClinical Consequences of Delayed Treatment for Tinea Capitis (Ringworm of the Scalp): A Case Report.
P R Health Sci J
September 2024
Department of Dermatology, School of Medicine, University of Puerto Rico Medical Sciences Campus, San Juan, Puerto Rico.
Article Synopsis
- A 6-year-old Hispanic girl experienced itchy patches on her scalp, leading to hair loss and prompting treatment that included ketoconazole shampoo and later hospitalization for intravenous fluconazole, but her condition worsened.
- After further evaluation at the University Pediatric Hospital, dermatology consultations revealed she had tinea capitis with kerion formation caused by Trichophyton tonsurans, along with head lice infestation.
- Effective treatment included a course of griseofulvin for the fungal infection, permethrin for lice, and prednisolone for inflammation, emphasizing the need for better communication among healthcare professionals to prevent complications from untreated pediatric skin conditions.
Elucidating the impact of environmental factors on the growth of Colletotrichum coccodes strains isolated from potato tubers in Great Britain.
Int J Food Microbiol
October 2024
Plant Science Laboratory, Cranfield University, Bedfordshire MK43 0AL, UK. Electronic address:
Black dot and silver scurf caused by Colletotrichum coccodes and Helminthosporium solani, respectively, are tuber blemish diseases affecting quality in the fresh and pre-pack potato industry. In the last 20 years, the importance of high-quality tuber appearance has increased considerably due to the growing demand for washed and pre-packed potatoes in the UK. Changing climate characterised by rising temperatures and wetter summers is a threat as this will favour the development of pathogens such as C.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!