Detection and Management of Mango Dieback Disease in the United Arab Emirates
نویسندگان
چکیده
Mango is affected by different decline disorders causing significant losses to mango growers. In the United Arab Emirates (UAE), the pathogen was isolated from all tissues sampled from diseased trees affected by Lasiodiplodia theobromae. Symptoms at early stages of the disease included general wilting appearance of mango trees, and dieback of twigs. In advanced stages, the disease symptoms were also characterized by the curling and drying of leaves, leading to complete defoliation of the tree and discolouration of vascular regions of the stems and branches. To substantially reduce the devastating impact of dieback disease on mango, the fungus was first identified based on its morphological and cultural characteristics. Target regions of 5.8S rRNA (ITS) and elongation factor 1-α (EF1-α) genes of the pathogen were amplified and sequenced. We also found that the systemic chemical fungicides, Score®, Cidely® Top, and Penthiopyrad®, significantly inhibited the mycelial growth of L. theobromae both in vitro and in the greenhouse. Cidely® Top proved to be a highly effective fungicide against L. theobromae dieback disease also under field conditions. Altogether, the morphology of the fruiting structures, molecular identification and pathogenicity tests confirm that the causal agent of the mango dieback disease in the UAE is L. theobromae.
منابع مشابه
Aflatoxin M1 in Ultra High Temperature Milk Consumed in Sharjah, United Arab Emirates
Background: Aflatoxin M1 (AFM1) is a mycotoxin found in milk that has a carcinogenic effect and poses significant public health risks. Since the human population's consumption of milk and milk products are quite high, thereby increasing the risk of exposure to AFM1 is of great threat. To assess public health hazards associated with the occurrence of AFM1 in Ultra High Temperature (UHT) milk, a ...
متن کاملPrevalent Poisonings in Adolescents and Adults in Dubai: A Compendium from Rashid Hospital
Background: Profile of acute poisonings varies from country to country depending on the ease of availability of substances and socio-economic condition of people; however, very little information from the United Arab Emirates (UAE) have been published, so far. This study was designed to find out the most common causes of overdose and poisoning in patients admitted to the emergency department of...
متن کاملImpacts of Teachers’ Pedagogical Approach on the Inclusion of Adolescents with Exceed Weight into Physical Education and Sports in Emirate of Ajman/United Arab Emirates
Background. Physical Education and Sports (PES) is essential to the student’s overall education. It has physical, affective, psychological, and social repercussions. Overweight adolescents are sometimes underestimated based on their lower physical performance and suffer from discriminatory attitudes by their peers and their physical education teachers. Objectives. This study aimed to investiga...
متن کاملA comparative study for quality of local and imported commercially available bottled water brands
In this study the quality of Omani and United Arab Emirates bottled water brands which are sold in Oman were assessed by comparing the chemical composition indicated on manufacturer’s label with local and international bottled water standards. Results indicated that all the bottled water brands are complying with local and international standards. According to piper diagram, t...
متن کاملDeveloping an Expert System for Diabetics Treatment Advices
Today, expert systems are widely applied in medicine for prognosis, diagnosis, checkup, and treatment of various kinds of diseases. A comprehensive system for the checkup and treatment of different types of diabetes is still lacking. This paper reports development of such a system, its validation, and its utility in facilitating medical decision-making and supporting self-care.
متن کامل