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Interaction of Meloidogyne incognita and Pseudomonas syringae pv. aptata in different types of soil on plant growth, photosynthetic pigments and proline contents of beetroot (Beta vulgaris L.).
Exp Parasitol
December 2024
Department of Botany, Aligarh Muslim University, Aligarh-202002, INDIA. Electronic address:
Effect of Meloidogyne incognita and Pseudomonas syringae pv. aptata (Psa) was observed singly, together and pre and post inoculations in 4 soil types on plant growth, parameters, chlorophyll, carotenoid and proline contents of beetroot (Beta vulgaris L). Plant growth, chlorophyll and carotenoid contents were greater in loam soil followed by 20% fly ash soil, 10% fly ash plus 10% sand amended soil and least in 20 % sand mix soil.
View Article and Find Full Text PDFsp. nov., and sp. nov., isolated from watermelon in Florida.
Int J Syst Evol Microbiol
December 2024
Department of Plant Pathology, University of Florida, Gainesville, FL, USA.
Three fluorescent bacterial strains, K1, K13 and K18, were obtained from watermelon () foliage symptomatic of bacterial leaf spot of cucurbits in Florida. The strains underwent phenotypic characterization, including LOPAT (levan production, oxidase activity, pectolytic activity on potato, arginine dihydrolase production and hypersensitive response (HR) on both tobacco and tomato) and pathogenicity testing on watermelon and squash seedlings. Whole-genome sequencing of the isolates was performed, and multi-locus sequence analysis (MLSA) utilizing housekeeping genes , , and placed the isolates into two distinct clades within the genus.
View Article and Find Full Text PDFEvolution of copper resistance in pv. population.
mSystems
December 2024
Department of Plant Pathology, University of Florida, Gainesville, Florida, USA.
The widespread use of antimicrobials that target bacterial pathogens has driven evolution of resistance, compromising the efficacy of these bactericides. Understanding the emergence and spread of resistance genes via mobile genetic elements is crucial for combating antimicrobial resistance. Copper resistance (CuR) in pv.
View Article and Find Full Text PDFHyperspectral imaging analysis for early detection of tomato bacterial leaf spot disease.
Sci Rep
November 2024
School of Plant and Environmental Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA.
Recent advancements in hyperspectral imaging (HSI) for early disease detection have shown promising results, yet there is a lack of validated high-resolution (spatial and spectral) HSI data representing the responses of plants at different stages of leaf disease progression. To address these gaps, we used bacterial leaf spot (Xanthomonas perforans) of tomato as a model system. Hyperspectral images of tomato leaves, validated against in planta pathogen populations for seven consecutive days, were analyzed to reveal differences between infected and healthy leaves.
View Article and Find Full Text PDFNatural field diagnosis and molecular confirmation of fungal and bacterial watermelon pathogens in Bangladesh: A case study from the Natore and Sylhet districts.
PLoS One
November 2024
Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh.
Article Synopsis
- The study explored watermelon diseases in two distinct climatic regions of Bangladesh, Sylhet (cool and wet) and Natore (hot and dry), by surveying 40 fields and identifying 10 diseases.
- A total of nine pathogens were identified through molecular analysis at Sher-e-Bangla Agricultural University, including various fungi, bacteria, and a water mold, with high genetic similarity to sequences in the GenBank database.
- The results indicated that Fusarium wilt was the most prevalent disease in Sylhet, while Angular leaf spot dominated in Natore, emphasizing the need for disease management strategies tailored to specific environmental conditions.
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