scholarly journals Genetic and Morphological Variability among the Isolates of Fusarium oxysporum f. sp. lentis causing Wilt of Lentil

2021 ◽  
Author(s):  
Anshul Arya ◽  
Sujata Singh ◽  
K.P.S. Kushwaha ◽  
Yogita Bohra ◽  
Arun Kushwaha ◽  
...  
Keyword(s):  
Disease Management ◽  
Fusarium Oxysporum ◽  
Morphological Variability ◽  
Management Strategies ◽  
Uttar Pradesh ◽  
Morphological Diversity ◽  
Population Diversity ◽  
Yield Losses ◽  
Diversity Methods ◽  
Ssr Primers

Background: Lentil wilt is one of the most important diseases of lentil directly contributing to the yield losses of the crop. It is caused by Fusarium oxysporum f. sp. lentis which shows the great genetic and morphological diversity. Methods: Present investigation was conducted during 2017-2019 with 22 isolates of the pathogen, collected from lentil grown areas of Uttarakhand and Uttar Pradesh to explore genetic and morphological variability employing eight ISSR and five SSR primers. Result: The isolates showed huge morphological variability based on the color, pigmentation and shape of conidia. Study on molecular variability revealed the versatility in the genome of different isolates of pathogen. The diversity among the isolates of pathogens collected from Uttarakhand and Uttar Pradesh was also evident. Generated work on genetic and morphological variability and the population diversity among the different isolates of the pathogen impact on developing ideal disease management strategies.

scholarly journals Genetic Diversity of Fusarium oxysporum f. sp. cubense in East and Central Africa

Plant Disease ◽  
2018 ◽  
Vol 102 (3) ◽  
pp. 552-560 ◽  
Author(s):  
Patrick Karangwa ◽  
Diane Mostert ◽  
Privat Ndayihanzamaso ◽  
Thomas Dubois ◽  
Björn Niere ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Disease Management ◽  
Fusarium Oxysporum ◽  
Fusarium Wilt ◽  
Management Practices ◽  
Management Strategies ◽  
Central Africa ◽  
Elongation Factor ◽  
Intergenic Spacer ◽  
Intergenic Spacer Region

Banana Fusarium wilt is a major production constraint globally and a significant threat to the livelihoods of millions of people in East and Central Africa (ECA). A proper understanding of the diversity and population dynamics of the causal agent, Fusarium oxysporum f. sp. cubense (Foc), could be useful for the development of sustainable disease management strategies for the pathogen. The current study investigated the diversity of Foc in ECA using vegetative compatibility group (VCG) analysis, PCR-RFLPs of the ribosomal DNA’s intergenic spacer region, as well as phylogenetic analysis of the elongation factor-1α gene. Six VCGs (0124, 0125, 0128, 01212, 01220, and 01222), which all belong to one lineage (Foc lineage VI), were widely distributed throughout the region. VCGs 0128 and 01220 are reported for the first time in Burundi, the Democratic Republic of Congo (DRC), Rwanda, Tanzania, and Uganda, while VCG 01212 is reported in the DRC and Rwanda. Isolates that did not belong to any of the known VCGs were identified as Foc lineage VI members by phylogenetic analysis and may represent novel VCGs. CAV 2734, a banana pathogen collected in Rwanda, clustered with nonpathogenic F. oxysporum isolates in lineage VIII. Results from this study will contribute significantly toward the implementation of banana Fusarium wilt disease management practices in the region, such as the restricted movement of infected planting material and the selective planting of resistant banana varieties.

scholarly journals Fusarium basal rot: profile of an increasingly important disease in Allium spp.

2021 ◽  
Author(s):  
Dung Le ◽  
Kris Audenaert ◽  
Geert Haesaert
Keyword(s):  
Disease Management ◽  
Cultural Practices ◽  
Current Knowledge ◽  
Management Strategies ◽  
Future Directions ◽  
Basal Rot ◽  
Major Constraint ◽  
Fusarium Basal Rot ◽  
Chemical Pesticides ◽  
Important Disease

AbstractFusarium basal rot (FBR) is a soil-borne disease that affects Allium species worldwide. Although FBR has long been recognized as a major constraint to the production of economically important Allium species, information that could support disease management remains scattered. In this review, the current knowledge on the causal agents, symptomology and epidemiology, impact, and management strategies of FBR is synthesized. We highlight that FPR is associated with different complexes of several Fusarium species, of which Fusarium oxysporum and F. proliferatum are the most prevalent. These pathogenic complexes vary in composition and virulence, depending on sites and hosts, which can be challenging for disease management. Research to improve disease management using chemical pesticides, resistance cultivars, biocontrol agents, and cultural practices has achieved both promising results and limitations. Finally, research needs and future directions are proposed for the development of effective FBR management strategies.

Species delimitation and population structure in three Onosma (Boraginaceae) species

Biologia ◽  
2015 ◽  
Vol 70 (10) ◽  
Author(s):  
Masoud Sheidai ◽  
Samira Sadeghi ◽  
Mahnaz-Arab Ameri ◽  
Ahmad-Reza Mehrabeian
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Species Delimitation ◽  
Genetic Difference ◽  
Morphological Variability ◽  
Morphological Diversity ◽  
Mantel Test ◽  
Geographical Distance ◽  
Nj Tree ◽  
Issr Molecular Markers

AbstractThe present study aimed to reveal genetic diversity and population structure in three Onosma species i.e., Onosma bulbotrichum DC., O. elwendicum Wettst. and O. sericeum Willd. (Boraginaceae) growing in Iran. This study was performed to check if the ISSR molecular markers could be used in the Onosma species delimitation. We also investigated the infra-specific morphological variability and if we can identify infra-species taxonomic forms. The present study revealed within species genetic and morphological diversity. ISSR data could delimit the studied species as they were separated from each other in NJ tree, maximum parsimony and STRUCTURE analysis. AMOVA and Hickory tests produced significant genetic difference among the studied species. The Mantel test showed no correlation between genetic distance and geographical distance of the populations for all three species. Reticulation analysis and Nm estimation showed gene flow among these populations. We could identify a few ISSR loci that are adaptive. Data obtained can be used in conservation of these medicinal plants in Iran.

scholarly journals Fusarium Consortium Populations Associated with Asparagus Crop in Spain and Their Role on Field Decline Syndrome

2020 ◽  
Vol 6 (4) ◽  
pp. 336
Author(s):  
Alexandri María Brizuela ◽  
Eduardo De la Lastra ◽  
José Ignacio Marín-Guirao ◽  
Laura Gálvez ◽  
Miguel de Cara-García ◽  
...  
Keyword(s):  
Fusarium Oxysporum ◽  
Fusarium Species ◽  
Management Strategies ◽  
Statistical Correlation ◽  
Inoculum Density ◽  
Average Temperature ◽  
Species Complexes ◽  
Main Production ◽  
Production Areas ◽  
Prevalent Species

Asparagus Decline Syndrome (ADS) is one of the main phytosanitary problems of asparagus crop worldwide. Diseased plants and soil samples from 41 fields from three main production areas of Spain were surveyed. Eight Fusarium species belonging to seven species complexes were identified in soils: F. oxysporum, F. proliferatum, F. redolens, F. solanisensu stricto, F. equiseti, F. culmorum, F. compactum and F. acuminatum. Fusarium oxysporum was the most prevalent species. Statistical correlation (R2 = 88%) was established between F. oxysporum inoculum density and the average temperature of the warmest month. A relationship was also established between three crop factors (average temperature, crop age and F. oxysporum inoculum density) and field disease indices. Significant differences were observed between the distribution of F. oxysporum propagules in white and green asparagus fields. Thirteen Fusarium species belonging to seven species complexes were identified from roots of diseased plants, being F. oxysporum the most prevalent. F. proliferatum, F. oxysporum and F. redolens showed pathogenicity to asparagus and were the main species associated to ADS. Fusarium oxysporum was the species with the highest genetic diversity displaying 14 sequence-based haplotypes with no geographic differentiation. This work contributes to understanding the Fusarium complex associated to ADS for developing accurate integrated disease management strategies.

scholarly journals Strategies for Managing Marine Disease

2021 ◽  
Author(s):  
Caroline Kate Glidden ◽  
Laurel C. Field ◽  
Silke Bachhuber ◽  
Shannon M. Hennessey ◽  
Robyn Cates ◽  
...  
Keyword(s):  
Disease Management ◽  
Marine Organism ◽  
Marine Ecosystem ◽  
Management Strategies ◽  
Emerging Infectious Diseases ◽  
Marine Conservation ◽  
Wildlife Disease ◽  
Common Disease ◽  
Marine Habitats ◽  
Marine Wildlife

The incidence of emerging infectious diseases (EIDs) has increased in wildlife populations in recent years and is expected to continue to increase with global change. Marine diseases in particular are relatively understudied compared to terrestrial disease, but they can disrupt ecosystem resilience, cause economic loss, or threaten human health. While there are many existing tools to combat the direct and indirect consequences of EIDs, these management strategies are often insufficient or ineffective in marine habitats compared to their terrestrial counterparts, often due to fundamental differences in marine and terrestrial systems. Here, we first illustrate how the marine environment and marine organism life history present challenges or opportunities for wildlife disease management. We then assess the application of common disease management strategies to marine versus terrestrial systems to identify those that may be most effective for marine disease outbreak prevention, response, and recovery. Finally, we recommend multiple actions that will enable more successful management of marine wildlife disease emergencies in the future. These include prioritizing marine disease research and understanding its links to climate change, preventatively increasing marine ecosystem health, forming better monitoring and response networks, developing marine veterinary medicine programs, and enacting policy that addresses marine and other wildlife disease. Overall, we encourage a more proactive rather than reactive approach to marine conservation in general and to marine wildlife disease in particular and emphasize that multi-disciplinary collaborations are key to managing marine wildlife health.

scholarly journals Spices-Reservoir of Health Benefits

2021 ◽  
Author(s):  
Cheryl Sachdeva ◽  
Naveen Kumar Kaushik
Keyword(s):  
Disease Management ◽  
Nutritive Value ◽  
Management Strategies ◽  
Health Benefits ◽  
Therapeutic Agents ◽  
Phytochemical Analysis ◽  
Negative Effects ◽  
Active Constituents ◽  
Medicinal Value ◽  
Ancient Times

Spices contribute to the quality, nutritive value, and flavor of food. Since ancient times, they hold a great medicinal value. Their antimicrobial, antiviral, antibacterial, anti-inflammatory, and other numerous properties have made them a potent source of therapeutic agents. Phytochemical analysis revealed presence of active constituents such as eugenol, curcumin, carotenoids in clove, turmeric, saffron respectively that explains the efficacious nature of these spices. Owing to their easy availability and consumption, it is advised to make spices daily part of our diet though in balanced amount as sometimes excess usage bear few consequences. Evaluating multiple benefits offered by these as immunity boosters especially in times of pandemic and incorporating them in our routine diet would improve disease management strategies. This chapter discusses the reservoir of activities exhibited by few spices along with the components responsible for these activities. Here, we also discussed their negative effects if at all.

scholarly journals Use of the Nursing Outcomes Classification - NOC to assess the knowledge of patients with venous ulcer

2020 ◽  
Vol 41 (spe) ◽  
Author(s):  
Viviane Maria Osmarin ◽  
Fernanda Guarilha Boni ◽  
Taline Bavaresco ◽  
Amália de Fátima Lucena ◽  
Isabel Cristina Echer
Keyword(s):  
Chronic Disease ◽  
Disease Management ◽  
Chronic Disease Management ◽  
Management Strategies ◽  
Venous Ulcer ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Nursing Outcomes ◽  
Treatment And Prevention ◽  
Nursing Outcomes Classification

Abstract Objective: To evaluate the knowledge of patients with venous ulcers (VU) on their chronic disease, treatment, and prevention of complications, according to the Nursing Outcomes Classification-NOC. Methods: This is a cross-sectional study conducted between 2017 and 2018 in a Brazilian hospital. The sample consisted of 38 patients with VU attended in outpatient nursing consultations. The study analyzed sociodemographic, clinical and nine indexes from the Knowledge: Chronic Disease Management (1847) of the NOC, assessed using a five-point Likert scale, analyzed using descriptive statistics. Results: The mean of the result Knowledge: Chronic Disease Management (1847) was 3.56±1.42. The clinical index Procedures involved in treatment regimen had the highest mean 4.18±0.21, followed by Pain management strategies with 3.92±0.27. In the association between knowledge and healing, the best scores were in patients with at least one healed VU. Conclusion: The knowledge of the patients was moderate and it was necessary to promote educational actions according to individual demands.

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