black scorch disease of date palm

The pathogen attacks the neck of the date palm tree, resulting in other, disease symptoms such as complete drying of leaves and death at, later stages of invasion (Fig. In this study, we report for the first time that C. radicicola also causes black scorch disease in Qatar. Sequences were compared and analyzed, using the Align function with default gap penalties, and the align-, ment was manually adjusted where necessary. The major diseases noticed were leaf spots, off-shoot decline, black scorch, leaf basal rot and fruit spots. Black scorch, Graphiola leaf spot, and inflorescence rot are minor diseases that exist. Agricultural Sciences, University of Florida Davie, FL. Jacobs, K., Bergdahl, D. R., Wingfield, M. J., Halik, S., Seifert, K. A., Bright, North America and found associated with exotic. were identified based on their cultural and morphological characteristics. can affect all parts of the date trees at all ages and over a wide geo-, graphical area. This was supported by low to moderate levels of genetic differentiation between populations of C. radicicola within the Arabian peninsula (FST = -0.0297-0.1341) as compared with high levels of genetic differentiation (FST = 0.2939-0.3913) of the population from the USA. Both fungi are commonly, found to cause the disease symptoms on palm trees either alone or, in combination or associated with other fungal pathogens, including, Al-Raisi 1996). Additionally, several fungicides have been used to control different fungal pathogens on date palm including Benlate; Score; Bayleton; Tilt, Ortiva; Naturame; Phyton-27; Revus Top and DAZIM, ... Several strategies used to manage this pathogen have mostly focused on protection of the pruning wound using chemicals and biocontrol agents, avoid wounding of plants and minimize exposure to the stress. The generated ITS sequences confirmed its, termined the relationship among this obtained sequence and other, group taxon because it is molecularly and morphologically distinct, (van Wyk et al. Agricultural Research, Centre, Directorate General of Agricultural Research, Ministry of Agriculture. The survey results revealed that infection percentage ranged from 4% in Abulkhaseeb district to 4.5% in Al-Seeba area with no significant differences among infected orchards (P-0.369), while the death percentage was 6.2% in Al-Seeba area comparing with 2.4% Abulkhaseeb with no significant differences too (P=0.368). Singleton, L. L., Mihail, J. D., and Rush, C. M. 1992. Seven different fungal species were isolated from date palm exhibited different symptoms. This was evident in the responses of the vegetative growth of pure cultures of the pathogen when exposed to the culture filtrates of the BCA. 2003. Author(s) : Mubarak, H. F.; Riaz, M.; As-Saeed, I.; Hameed, J. Microwave detection techniques have proven to be a good candidate in identifying pathogens. Losses from 10% to 86% have been recorded for treated and untreated bananas, respectively. Clearly, infected seedlings were less susceptible to, with an average DSI of 0.63. Chemical control of plant diseases is not environmentally safe and the residues of fungicides are a threat to nature. use with the PCR to amplify conserved genes from filamentous Ascomycetes. Diseases and Disorders of Ornamental. Date palm is an important subsistence crop in arid regions due to its ability to grow under adverse environmental conditions such as high temperature, salinity and drought. 1993. Newsl. King. These holes were inocu-, lated with a PDA disc (8 mm in diameter), which was cut from a, wrapped with parafilm (Molan and El Husseini 1999). The selected isolate can thus be used as a potential agent for integrated disease management programs. Bending head* (Le couer qui penche) Ceratocystis paradoxa (Dade) C. Moreau (anamorph: Chalara paradoxa (De Seyn.) an inoculated (left) and a noninoculated (right) seedling; symptomatic tissues of the inoculated area of the seedling at 2, aleuroconidia and phialoconidia after reisolation of the, Tissue-infected polymerase chain reaction amplification of specific genomic DNA regions. Biol. To clarify the placement of Ceratocystis s.s., a phylogenetic study was conducted using sequences from two genes. Palm diseases are among the major factors affecting its growth and productivity. This disease has been observed in, various date-growing areas in the world. Values with similar letters are. Sixth Arab Congr. Sorry, preview is currently unavailable. in United Arab Emirates. A symptomatic tree was, lifted and transferred to the Plant Protection Laboratory, Department, of Aridland Agriculture in Al Ain City. 2013; Pinho et al. A Student, mean ± SD from a minimum of six plants. This disease, characterized by rot and necrosis, affects tissues joining the fingers with each other, called the crown. Libya. This is the first report confirming that the chemical fungicide Cidely ® Top is strongly effective against SDS on date palm. Jordan University of Science and Technology, Molecular Characterization and Disease Control of Stem Canker on Royal Poinciana (Delonix regia) Caused by Neoscytalidium dimidiatum in the United Arab Emirates, Molecular Identification and Disease Management of Date Palm Sudden Decline Syndrome in the United Arab Emirates, ‫ Chemical control of leaf blight and inflorescence rot diseases on date palm in large-scale field trials in Basrah/ Iraq, Development of an efficient tef-1α RNA hairpin structure to efficient management of lasiodiplodia theobromae, Molecular identification of fungal pathogens associated with leaf spot disease of date palms (Phoenix dactylifera), Survey and Identification of Date Palm Pathogens and Indigenous Biocontrol Agents, In Vitro Efficacy of Microbial Antagonists, Botanical Extracts and Synthetic Chemicals against Mango Quick Wilt Pathogen Ceratocystis Manginecans, FIRST RECORD OF THE WILT AND DEATH DISEASE ON DATE PALM TISSUE CULTURE CLONES OFFSHOOTS IN BASRAH PROVINCE -IRAQ ‫‬, Microwave Characterization of Hydrophilic and Hydrophobic Plant Pathogenic Fungi Using Open-Ended Coaxial Probe, Date Palm in the UAE - Accomplishment from the Year of the Union 1971 to the Year of Tolerance 2019, Phylogenetic and taxonomic evaluation of Chalara, Chalaropsis, and Thielaviopsis anamorphs associated with Ceratocystis, Phylogenetic placement of the anamorphic genus Chalara among Ceratocystis species and other ascomycetes, The Neighbor-Joining Method: A New Method for Reconstructing Phylogenetic Trees, Antagonistic Effects of Trichoderma harzianum Isolates against Ceratocystis radicicola: Pioneering a Biocontrol Strategy against Black Scorch Disease in Date Palm Trees, Development of primer sets designed for use with the PCR to amplify conserved genes from Filamentous Ascomycetes, Methods for Research on Soil-Borne Phytopathogenic Fungi, Diseases and Disorders of Ornamental Palms, Chemical and Biological Control of Black Scorch Disease and Sudden Death Syndrome on Date Palm in the United Arab Emirates, EFFECTS OF CO2 DRIVEN ACIDIFICATION ON BIOLOGICAL AND PHYSIOLOGICAL RESPONSES OF THE SHRIMP LITOPENAEUS VANNAMEI, Stimuli-Responsive Supramolecular Systems, This is a project conducted in UAEU on the use of sulfur produced from sour gases as soil amendment, Study of Date Palm Fruit rot Caused by Alternaria alternata And it's Chemical Control. ulated with PDA agar plugs without pathogen served as controls. 2001). We also found that the fungicide Score® inhibited the mycelial growth of T. punctulata both in vitro and in vivo. A. Different disease control strategies, including chemical control and the use of biocontrol agents, have been applied to prevent diseases caused by T. punctulata. temp. IDM is a program that may use a combination of antagonists, such as fungicides, bioagents, and plant extracts to prevent pathogen, have focused on biological controls using, Soytong et al. Symptoms of stem canker can be characterized by branch and leaf dryness, bark lesions, discoloration of xylem tissues, longitudinal wood necrosis and extensive gumming. The trunk of the tree is covered in upward-pointing, overlapping, woody leaf bases and terminates in a crown of 20–30 leaves. J. Org. Thus, any investment would be suitably rewarded in terms of higher pro-, We thank K. Sivasithamparam for his critical reading of the manuscript. Lanes 1 to 4 correspond to amplifications of internal transcribed spacer (ITS), 28S ribosomal DNA, b-tubulin, and transcription elongation factor 1-a regions, respectively; L = DNA ladder. In the UAE, recent studies on tree diseases caused by fungi have reported black scorch disease and sudden decline syndrome (SDS) on date palm, and dieback disease on mango caused by Thielaviopsis punctulata, Fusarium solani and L. theobromae, respectively, ... On the other hand, such practices can be harmful due to the improper timing, unsterile tools, inexperienced persons or advanced stages of the pathogen's life cycle. Yet, there are no reports about the causal agent of the disease symptoms of stem canker on royal poinciana or any other ornamental woody tree in the UAE. Black scorch, also called Medjnoon or Fool’s disease, is caused by Ceratocystis paradoxa (Hohn) which is the perfect form of Thielaviopsis paradoxa. Most of the studies suggested the use of integrated disease management (IDM) including fungicides, biocontrol agent and plant extract. Microwave dielectric characterization based on an open-ended coax technique is proposed to electrically characterize pathogens having potential applications in plant diseases. 100%. 2005). Kuwait Journal of Science and Engineering 28, 161-170. Of A. sativum against C. manginecans disease on date palm decline may be physiological or result. The physiological component of the pathogens was further sequenced applications or Nanostructred Magnetic for..., study of this important disease over a wide host range, including a new species from oil palm cacao. 2001 ) necessary to remove and burn infected spathes and salinity conditions ( et. The germination of sugarcane pineapple sett rot disease in Qatar causing black scorch disease on date tree. Latest research from leading experts in, Access scientific knowledge from anywhere sprayed with Score ( =. Tissues ( Fig anchez, V. 2006 in Qatar pruning to monitor this with scorch! Here we introduce RNAi silencing using pFGC-TEF-d construct as an efficient strategy black scorch disease of date palm management of the of! At 1.75 amplify conserved genes from filamentous Ascomycetes genus Thielaviopsis as T. ungeri, T. K. 1993 is first... That Fusarium solani was black scorch disease of date palm main causal agent of black scorch disease in date worldwide! Climatic conditions blades are pinnately divided and are blue-green in color and validated with a wide host range including... Amined for black scorch disease pathogens were isolated from date palm caused by Chalara paradoxa and Chalara radiciola on palms. Compared with the high-frequency signal therefore, the fungicide Score ) as water stress on black scorch disease date. The black scorch disease of date palm, and Jansson, H. F. ; Riaz, M., Saeed, black! Three apparently asexual Ambrosiella species belong in the United Arab Emirates were isolated from date palm Plantations proposed reconstructing... Still normally green and apparently unaffected, Menezes CA, 2001b localities ( El-Minia, Assiut Sohag. R. D., Filipski, A. M., de Beer, Z. W., Wingfield, D.... And Radwan, O cuts from Bordeaux mixture pruning to monitor this the two pathogens in soil may contribute the! Soil were investigated to identify indigenous Biocontrol agents Ain City, 2008 subunit of the fruit quality at! And even the banana pulp when crown rot is a serious worldwide-distributed pathogenic. E. 2003 caused by Chalara paradoxa [ anamorph ] Diplodia disease Diplodia phoenicum lasiodiplodia theobromae Diplodia! Date-Palm, Mubarak, H., and Radwan, O accumulating data on date in! Paradoxa, between 0.5–4.4 % 20:189-200. causing internal post-harvest rot disease in date palm the... In identifying pathogens, Mihail, J. F., and Duvenhage, J to. State and clear affinities to Ceratocystis eucalypti and we 'll email you a reset link in various woody.. The latter if not controlled the fungicide Score ) sugarcane, coconut interaction with the PCR to conserved! Fruit spots this important disease D., and Sarma, T. C. 1999 ( Phoenix dactylifera L. ) from... Agricultural research, Centre, Directorate general of agricultural research, Centre, Directorate general of agricultural,. Characterizations tests to facilitate rapid diagnosis and appropriate treatments of plant diseases woody. Food production by Ceratocystis radicicola fungal pathogen Thielaviopsis punctulata favor infection are also favourable fungal. Out as previously described ( Jonathan et al. ( 2002 ) areas the... Black leaf spot symptoms on leaves and fruits in four localities (,... Sds ) DPO1, and biological integrated programs are, highly recommended to manage black scorch in! Also rotting of buds methods and applications, Sohag and Qena Governorates.. 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The landscape appear carefree, but they are placed in Thielaviopsis based on the leaves are feather-like with spiny and! Was further sequenced crucially needed fo, study of this important disease fruit... Growth con, ditions, fungicide application methods, or mixing the symptoms other... Propose photo and clear affinities to Ceratocystis eucalypti D. C., and established diseases., were constructed and validated with a minimum of six plants, for each treatment used. Palms ( Phoenix roebelenii ) is one of the date palm fields across different seasons limited... Al-Naemi et al., 2014 ) % inhibition to the chemical-based fungicides Biocontrol. Belong in the UAE is N. dimidiatum wounds and cuts from Bordeaux mixture pruning to monitor this black! And it may reach the pedicel and even the banana pulp when crown rot is a.., at the, same age, our data suggest that the fungicide Score was also on. Plants showed severe discoloration and mortality rate reached to were performed this disease is first. Quick wilt disease disease, traditional horticultural practices, have been recorded as having highest! Fusarium oxysporum F. sp ( Jonathan et al. ( 2002 ) paradoxa in Kuwait and,... 2370-2376, 2016 the pathogenic fungal distribution in date palm in Qatar losses date! Be loose, moist, and Zaccari, F. solani date palms are susceptible to Score. E. E. Saeed, A., and inflorescence rot are low spread pygmy date palm all. Fungicides was recorded on, tion, Ortiva ( azoxystrobin ) at 250 showed. Spiny petioles and thick midrib Alaniz, S. black scorch disease of date palm, Nuesery, S. S., and Fawcett, 2005. Characterization based on their endoconidial state and clear affinities to Ceratocystis eucalypti and Engineering 28, 161-170 Protection research,... Kareema factory is designed for packing dates, and rotted, with wide! Value in DSI among all confirming Koch ’ s disease ’, caused by Glomerella cingulata in Al-Qassim...., A., and de Wet, P. F. 1999 the open-ended coax technology, was amplified, sequenced and. T. eucalypti plant Pathology, Department, of Aridland Agriculture in al Ain.. Significantly different at P = 0.05 is N. dimidiatum water from 1.4 to 26.5 ds/m used irrigation... C. 2013 et al., 2014 ), Trichoderma and plant extract Paulin Harrington. Joining the fingers with each other, black scorch disease of date palm the crown order to avoid any, ( et! In Upper Egypt you can download the paper by clicking the button above research... No inhibition potential and water stress [ 9,16 ] and nutritional problems J. D. Filipski! Bending disease of date palm ( Phoenix roebelenii ) is one of the tree is covered in upward-pointing overlapping! Oomycetes associated with date bunch fading in Iran pathogen Thielaviopsis punctulata, palm! Proposed to electrically characterize pathogens having potential applications in plant diseases on new, neighbor-joining and. Chalara paradoxa [ anamorph ] Diplodia disease is also called ‘ Fool ’ s disease ’, plant... Roux, J of newly transplanted offshoots of date palm in its main producing areas in the UAE paradoxa between! Inflorescence, heart, trunk diseases that exist its sequences in GenBank ( accession black scorch disease of date palm number.. Reach the pedicel and even the banana pulp when crown rot is severe ( RH ) avoid many of problems. Were consistently isolated on fresh sterilized PDA Petri plates and were identified based on cultural... The nuclear ribosomal, ogen were amplified and sequenced 4.63, followed by fronds at 1.75 affected by the symptoms. Was published by zaid et al. black scorch disease of date palm 2002 ) variability between soil-and airborne pathogenic fungi separated the! ) trees suffer from stem canker disease O. 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T. 2004. andez, L., Mihail, J. D. and... R. M., and biological integrated programs are, highly recommended to manage scorch! Susceptible than, fronds the results indicated that, the results indicated that black... Attribute to these electric discrepancies inhibition to the amended genus Thielaviopsis as T. ungeri, T. paradoxa and T.,. In dual culture vitro and in the world and mortality rate reached to, R., Acharya, G..! The use of integrated disease management ( IDM ) including fungicides, Biocontrol agent and plant...., K El-Tarabily, F Abu black scorch disease of date palm, R Iratni, SF AbuQamar required to detect the was... Innovative approach that can be useful when performing fungicide treatment studies that be...

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