scholarly journals Opportunities and Challenges in Studies of Host-Pathogen Interactions and Management of Verticillium dahliae in Tomatoes

Plants ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1622
Author(s):  
Bhupendra Acharya ◽  
Thomas W. Ingram ◽  
YeonYee Oh ◽  
Tika B. Adhikari ◽  
Ralph A. Dean ◽  
...  
Keyword(s):  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Current Knowledge ◽  
Management Strategies ◽  
Future Research ◽  
Broad Host Range ◽  
Pathogen Virulence ◽  
Solanum Lycopersicum L ◽  
Worldwide Distribution ◽  
Management Approaches

Tomatoes (Solanum lycopersicum L.) are a valuable horticultural crop that are grown and consumed worldwide. Optimal production is hindered by several factors, among which Verticillium dahliae, the cause of Verticillium wilt, is considered a major biological constraint in temperate production regions. V. dahliae is difficult to mitigate because it is a vascular pathogen, has a broad host range and worldwide distribution, and can persist in soil for years. Understanding pathogen virulence and genetic diversity, host resistance, and plant-pathogen interactions could ultimately inform the development of integrated strategies to manage the disease. In recent years, considerable research has focused on providing new insights into these processes, as well as the development and integration of environment-friendly management approaches. Here, we discuss the current knowledge on the race and population structure of V. dahliae, including pathogenicity factors, host genes, proteins, enzymes involved in defense, and the emergent management strategies and future research directions for managing Verticillium wilt in tomatoes.

scholarly journals Opportunities and Challenges to Understand Host-Pathogen Interactions and Management of Verticillium dahliae on Tomato

2020 ◽  
Author(s):  
Bhupendra Acharya ◽  
Thomas Ingram ◽  
YeonYee Oh ◽  
Tika Adhikari ◽  
Ralph Dean ◽  
...  
Keyword(s):  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Management Strategies ◽  
Broad Host Range ◽  
Environment Friendly ◽  
Pathogen Virulence ◽  
Solanum Lycopersicum L ◽  
Worldwide Distribution ◽  
Management Approaches ◽  
Plant Pathogen Interactions

Tomato (Solanum lycopersicum L.) is a valuable horticultural crop grown and consumed worldwide. Optimum production is hindered by several factors of which Verticillium dahliae, the cause of Verticillium wilt, is one of the major biological constraints in temperate production regions. V. dahliae is difficult to manage because it is a vascular pathogen, has a broad host range and worldwide distribution, and can persist in soil for years. Understanding the pathogen virulence and genetic diversity, host resistance, and plant-pathogen interactions can ultimately inform the development of integrated strategies to manage the disease. In recent years, considerable research has focused on providing new insight into these processes as well as the development and integration of environment-friendly management approaches. In this review, we discuss and summarize the recent findings on the race and population structure of V. dahliae; pathogenicity factors; host genes, proteins, and enzymes involved in defense; the emergent management strategies, and recent approaches to managing Verticillium wilt in tomatoes.

Exploring undergraduates’ money-management life: insight from an emerging economy

2019 ◽  
Vol 20 (3) ◽  
pp. 167-189 ◽  
Author(s):  
Vilani Sachitra ◽  
Dinushi Wijesinghe ◽  
Wajira Gunasena
Keyword(s):  
Financial Literacy ◽  
Psychological Factors ◽  
Management Strategies ◽  
The Body ◽  
Future Research ◽  
Money Management ◽  
Content Type ◽  
Financial Decisions ◽  
Management Behaviour ◽  
Management Approaches

Purpose Undergraduates are expected to be future leaders responsible for business and nations. Given that sound financial decision-making is critical to their success in their careers and lives, it is important to understand the money-management behaviour of undergraduates. In the context of developing countries, the body of knowledge on money-management behaviour is dominated by functional financial literature and there is little research on factors beyond this. This study aims to fill this gap by exploring economic, social and psychological factors that influence money-management behaviour of undergraduates in a developing nation (Sri Lanka) and how undergraduates respond to these influences. Design/methodology/approach The study used a qualitative exploratory approach. Data collection was carried out using focus group discussions and individual interviews amongst undergraduates in a leading Sri Lankan state university. Findings The results indicate that undergraduates adopted both careful and risky money-management approaches. The subthemes, specifically identified under economic, social and psychological factors, revealed how undergraduates responded to each of these factors and the influence of contextual and cultural differences in their money-management behaviour. Research limitations/implications Findings of the study revealed the importance of promoting innovative educational strategies to change the dependability mindset of undergraduates and to promote stress-management strategies that will assist them to enhance their personalities and creativity in making financial decisions. Theoretical and practical implications and future research directions are provided. Originality/value The literature scores in developing context are limited to exploring the existing pattern and the levels of the functional financial literacy. This study has deepened the authors’ understanding of how the developing context affects undergraduates’ response to the factors relating to their money-management behaviour. The findings from this study will be useful to government, financial institutions, educational institutions, parents and those who have a keen interest in encouraging healthy money-management behaviour in undergraduates.

scholarly journals Futuristic Sustainable Energy Management in Smart Environments: A Review of Peak Load Shaving and Demand Response Strategies, Challenges, and Opportunities

2020 ◽  
Vol 12 (14) ◽  
pp. 5561 ◽  
Author(s):  
Bhagya Nathali Silva ◽  
Murad Khan ◽  
Kijun Han
Keyword(s):  
Energy Management ◽  
Demand Response ◽  
Energy Demand ◽  
Management Strategies ◽  
Peak Load ◽  
Critical Discussion ◽  
Future Research ◽  
Smart Environments ◽  
Challenges And Opportunities ◽  
Management Approaches

The emergence of the Internet of Things (IoT) notion pioneered the implementation of various smart environments. Smart environments intelligibly accommodate inhabitants’ requirements. With rapid resource shrinkage, energy management has recently become an essential concern for all smart environments. Energy management aims to assure ecosystem sustainability, while benefiting both consumers and utility providers. Although energy management emerged as a solution that addresses challenges that arise with increasing energy demand and resource deterioration, further evolution and expansion are hindered due to technological, economical, and social barriers. This review aggregates energy management approaches in smart environments and extensively reviews a variety of recent literature reports on peak load shaving and demand response. Significant benefits and challenges of these energy management strategies were identified through the literature survey. Finally, a critical discussion summarizing trends and opportunities is given as a thread for future research.

scholarly journals The effects of conflict type and conflict expression intensity on conflict management

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Gergana Todorova ◽  
Kenneth Tohchuan Goh ◽  
Laurie R. Weingart
Keyword(s):  
Conflict Management ◽  
New Product Development ◽  
Current Knowledge ◽  
Test Theory ◽  
Future Research ◽  
Management Approach ◽  
Content Type ◽  
Expression Intensity ◽  
Relationship Conflicts ◽  
Management Approaches

Purpose This paper aims to add to the current knowledge about conflict management by examining the relationships between conflict type, conflict expression intensity and the use of the conflict management approach. Design/methodology/approach The authors test theory-based hypotheses using a field study of new product development teams in an interdisciplinary Masters program (Study 1) and an experimental vignette study (Study 2). Findings Results show that people are more likely to respond to task conflict and conflicts expressed with less intensity using collectivistic conflict management approaches (i.e. problem-solving, compromising and yielding), and to relationship conflicts and conflicts expressed with higher intensity through forcing, an individualistic conflict management approach. Information acquisition and negative emotions experienced by team members mediate these relationships. Practical implications Knowing how the characteristics of the conflict (type and expression intensity) affect conflict management, managers can counteract the tendency to use dysfunctional, forcing conflict management approaches in response to high intensity conflicts, as well as to relationship conflicts and support the tendency to use collectivistic conflict management approaches in response to low intensity conflict, as well as task conflicts. Originality/value The authors examine an alternative to the prevailing view that conflict management serves as a moderator of the relationship between conflict and team outcomes. The research shows that conflict type and intensity of conflict expression influence the conflict management approach as a result of the information and emotion they evoke. The authors open avenues for future research on the complex and intriguing relationships between conflict characteristics and the conflict management approach.

scholarly journals Wheat Blast: Past, Present, and Future

2018 ◽  
Vol 56 (1) ◽  
pp. 427-456 ◽  
Author(s):  
Paulo Cezar Ceresini ◽  
Vanina Lilián Castroagudín ◽  
Fabrício Ávila Rodrigues ◽  
Jonas Alberto Rios ◽  
Carlos Eduardo Aucique-Pérez ◽  
...  
Keyword(s):  
Current Knowledge ◽  
Phenotypic Diversity ◽  
Integrated Management ◽  
Durable Resistance ◽  
Management Strategies ◽  
Blast Disease ◽  
Broad Host Range ◽  
Wheat Varieties ◽  
Wheat Blast ◽  
Grass Hosts

The devastating wheat blast disease first emerged in Brazil in 1985. The disease was restricted to South America until 2016, when a series of grain imports from Brazil led to a wheat blast outbreak in Bangladesh. Wheat blast is caused by Pyricularia graminis-tritici ( Pygt), a species genetically distinct from the Pyricularia oryzae species that causes rice blast. Pygt has high genetic and phenotypic diversity and a broad host range that enables it to move back and forth between wheat and other grass hosts. Recombination is thought to occur mainly on the other grass hosts, giving rise to the highly diverse Pygt population observed in wheat fields. This review brings together past and current knowledge about the history, etiology, epidemiology, physiology, and genetics of wheat blast and discusses the future need for integrated management strategies. The most urgent current need is to strengthen quarantine and biosafety regulations to avoid additional spread of the pathogen to disease-free countries. International breeding efforts will be needed to develop wheat varieties with more durable resistance.

scholarly journals Review of Soil Salinity and Sodicity Challenges to Crop Production in the Lowland Irrigated Areas of Ethiopia and Its Management Strategies

Land ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1377
Author(s):  
Ashenafi Worku Daba ◽  
Asad Sarwar Qureshi
Keyword(s):  
Soil Salinity ◽  
Crop Production ◽  
Management Strategies ◽  
Mitigation Strategies ◽  
Irrigated Agriculture ◽  
Future Research ◽  
Research Attention ◽  
Farming Communities ◽  
Salt Affected Soils ◽  
Management Approaches

Ethiopia’s irrigated agriculture productivity has been threatened by severe salinity and sodicity problems which have resulted in significantly lower yields, food insecurity, and environmental degradation. The destructive effects of poor irrigation water management with the absence of drainage and anticipated future climate changes can accelerate the formation of salt-affected soil, potentially expanding the problem to currently unaffected regions. This paper synthesizes the available information on the causes, extent, and effects of salt-affected soils on soil and crop production and suggest chemical, biological, and physical reclamation and management approaches for tackling salinity and sodicity problems. The mitigation approaches (e.g., the addition of amendments, plantation of salt-tolerant crops, appropriate irrigation and drainage management, phytoremediation, and bioremediation) have successfully tackled soil salinity and sodicity problems in many parts of the world. These approaches have further improved the socioeconomic conditions of farming communities in salt-affected areas. The paper also discusses the effectiveness of these mitigation strategies under Ethiopian conditions. The policy interventions for reclamation of soil salinity and sodicity that indicates future research attention to restoring agricultural sustainability are also foci of this paper.

scholarly journals Feeding the Microbes: A Strategy to Control Verticillium Wilt

Agronomy ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1946
Author(s):  
Paraskevi Ziazia ◽  
Eirini G. Poulaki ◽  
Danai Gkizi ◽  
Luis Lozano ◽  
Mario Serrano ◽  
...  
Keyword(s):  
Disease Management ◽  
Verticillium Wilt ◽  
Defense Mechanisms ◽  
Plant Protection ◽  
Management Strategies ◽  
Soil Microbiome ◽  
Growth Media ◽  
Broad Host Range ◽  
Bacterial Strains ◽  
Root Bioassay

Verticillium dahliae is one of the most devastating soilborne pathogens for horticulture production. The pathogen has a broad host range and currently there is no effective chemical disease management, therefore, novel sustainable integrated disease management strategies should be considered. In this respect, we questioned whether the soil application of common microbiological growth media can influence the plant—microbe interactions and, subsequently, offer protection against V. dahliae. Indeed, the addition of Nutrient Broth (NB) and Potato Dextrose (PD) in non-sterilized soil reduced Verticillium wilt symptoms in eggplants. The addition of NB in sterilized soil did not reduce the disease symptoms compared to controls, however the addition of PD enhanced plant protection against V. dahliae. Following the results of a split root bioassay in eggplants, the possibility that NB and PD triggered the plant defense mechanisms against V. dahliae was excluded, since NB and PD did not reduce wilt symptom. Therefore, PD may be used as an easy food source for V. dahliae, detouring the pathogen from the root system of plants, while NB may affect the soil microbiome by enhancing antagonism in rhizosphere, or antagonistic interaction between V. dahliae and rhizospheric microbiome. Subsequently, several bacterial strains were isolated from the NB-treated rhizosphere and examined for their biocontrol activity against V. dahliae. Among the examined strains, a Pseudomonas putida strain, Z13, significantly reduced Veticillium severity and incidence under greenhouse conditions.

scholarly journals Atrial Fibrillation in Congenital Heart Disease

2021 ◽  
Vol 16 ◽  
Author(s):  
Irene Martín de Miguel ◽  
Pablo Ávila
Keyword(s):  
Congenital Heart Disease ◽  
Heart Disease ◽  
Congenital Heart ◽  
Clinical Decision Making ◽  
Current Knowledge ◽  
Management Strategies ◽  
Clinical Decision ◽  
Future Research ◽  
Special Focus ◽  
Surgical Ablation

The increasing prevalence of AF in a growing population of adults with congenital heart disease (CHD) poses new challenges to clinicians involved in the management of these patients. Distinctive underlying anatomies, unique physiological aspects, a high diversity of corrective surgeries and associated comorbidities can complicate clinical decision-making. In this review, the authors provide an overview of the current knowledge on epidemiology and pathophysiology, with a special focus on the differences to the non-CHD population and the clinical impact of AF in adults with CHD. Acute and long-term management strategies are summarised, including the use of antiarrhythmic drugs, catheter or surgical ablation and prophylaxis of thromboembolism. Finally, gaps of knowledge and potential areas of future research are highlighted.

Understanding Limited Use of Amplification in Infants and Children Who Are Hard of Hearing

2015 ◽  
Vol 25 (1) ◽  
pp. 15-23 ◽  
Author(s):  
Ryan W. McCreery ◽  
Elizabeth A. Walker ◽  
Meredith Spratford
Keyword(s):  
Hard Of Hearing ◽  
Hearing Aid ◽  
Management Strategies ◽  
Infants And Children ◽  
Future Research ◽  
Research Needs ◽  
Case Examples ◽  
Hearing Aid Use ◽  
Wide Range ◽  
In Infants And Children

The effectiveness of amplification for infants and children can be mediated by how much the child uses the device. Existing research suggests that establishing hearing aid use can be challenging. A wide range of factors can influence hearing aid use in children, including the child's age, degree of hearing loss, and socioeconomic status. Audiological interventions, including using validated prescriptive approaches and verification, performing on-going training and orientation, and communicating with caregivers about hearing aid use can also increase hearing aid use by infants and children. Case examples are used to highlight the factors that influence hearing aid use. Potential management strategies and future research needs are also discussed.

Amruthapala (Decalepis arayalpathra (J. Joseph and V. Chandras.) Venter): A Comprehensive Review on Diversity, Therapeutic Uses, and Valorization of Bioactive Constituents

2019 ◽  
Vol 20 (5) ◽  
pp. 376-389 ◽  
Author(s):  
Sonali Mishra ◽  
Nupur Srivastava ◽  
Velusamy Sundaresan ◽  
Karuna Shanker
Keyword(s):  
Secondary Metabolite ◽  
Current Knowledge ◽  
Experimental Studies ◽  
Critical Discussion ◽  
Future Research ◽  
Bioactive Constituents ◽  
Medicinal Uses ◽  
Comprehensive Review ◽  
Therapeutic Uses ◽  
Decalepis Arayalpathra

Background: Decalepis arayalpathra (J. Joseph and V. Chandras.) Venter is used primarily for nutrition besides its therapeutic values. Traditional preparations/formulations from its tuber are used as a vitalizer and blood purifier drink. The folklore medicinal uses cover inflammation, cough, wound healing, antipyretic, and digestive system management. A comprehensive review of the current understanding of the plant is required due to emerging concerns over its safety and efficacy. Objective: The systematic collection of the authentic information from different sources with the critical discussion is summarised in order to address various issues related to botanical identity, therapeutic medicine, nutritional usage, phytochemical, and pharmacological potentials of the D. arayalpathra. Current use of traditional systems of medicine can be used to expand future research opportunities. Materials and Methods: Available scripted information was collected manually, from peered review research papers and international databases viz. Science Direct, Google Scholar, SciFinder, Scopus, etc. The unpublished resources which were not available in database were collected through the classical books of ‘Ayurveda’ and ‘Siddha’ published in regional languages. The information from books, Ph.D. and MSc dissertations, conference papers and government reports were also collected. We thoroughly screened the scripted information of classical books, titles, abstracts, reports, and full-texts of the journals to establish the reliability of the content. Results: Tuber bearing vanilla like signature flavor is due to the presence of 2-hydroxy-4-methoxybenzaldehyde (HMB). Among five other species, Decalepis arayalpathra (DA) has come under the ‘critically endangered’ category, due to over-exploitation for traditional, therapeutic and cool drink use. The experimental studies proved that it possesses gastro-protective, anti-tumor, and antiinflammatory activities. Some efforts were also made to develop better therapeutics by logical modifications in 2-Hydroxy-4-methoxy-benzaldehyde, which is a major secondary metabolite of D. arayalpathra. ‘Amruthapala’ offers the enormous opportunity to develop herbal drink with health benefits like gastro-protective, anti-oxidant and anti-inflammatory actions. Results: The plant has the potential to generate the investigational new lead (IND) based on its major secondary metabolite i.e. 2-Hydroxy-4-methoxy-benzaldehyde. The present mini-review summarizes the current knowledge on Decalepis arayalpathra, covering its phytochemical diversity, biological potentials, strategies for its conservation, and intellectual property rights (IPR) status. Chemical Compounds: 2-hydroxy-4-methoxybenzaldehyde (Pubchem CID: 69600), α-amyrin acetate (Pubchem CID: 293754), Magnificol (Pubchem CID: 44575983), β-sitosterol (Pubchem CID: 222284), 3-hydroxy-p-anisaldehyde (Pubchem CID: 12127), Naringenin (Pubchem CID: 932), Kaempferol (Pubchem CID: 5280863), Aromadendrin (Pubchem CID: 122850), 3-methoxy-1,2-cyclopentanedione (Pubchem CID: 61209), p-anisaldehyde (Pubchem CID: 31244), Menthyl acetate (Pubchem CID: 27867), Benzaldehyde (Pubchem CID: 240), p-cymene (Pubchem CID: 7463), Salicylaldehyde (Pubchem CID: 6998), 10-epi-γ-eudesmol (Pubchem CID: 6430754), α -amyrin (Pubchem CID: 225688), 3-hydroxy-4-methoxy benzaldehyde (Pubchem CID: 12127).

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