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The most promising actinomycete isolate screened showed the highest efficacy against the black scorch disease when applied before or at the same time of inoculation with T. punctulata, compared with BCA or fungicide application after inoculation. 1999). The first browning appeared on the stem, around the site of inoculation 1 wpi. During the season of 2016-2017, The Inflorescence rot [2 (Khamedj), Black scorch, rooting of aerial offshoots and Leaf spots are considered of date palm serious diseases [3]. A, Tissue-infected polymerase chain reaction amplification of specific genomic DNA regions. (Abdullah et al. In this study, we report for the first time that C. radicicola also causes black scorch disease in Qatar. Description. Biol. Black scorch has been observed on date palm in all date growing areas of the world. Yearb. In most banana-growing areas, crown rot is principally controlled by postharvest fungicide treatments, but alternative control methods are being sought because of: (1) the emergence of resistance to some commonly used fungicides; (2) environmental problems linked to dumping of fungicide mixtures used at packing stations; and (3) consumer aversion to chemical residues in food. , under in vitro condition. Allium sativum showed the highest inhibitory (71.5%) activity against C. manginecans, while, Topsin-M (Thiophanate Methyl) was the most effective (84.7%) among fungicides in a poison food assay. Lack of, or excess irrigation, just as soil salinityabove 6%, are all factors that can endanger the health of the tree. Bending head* (Le couer qui penche) Ceratocystis paradoxa (Dade) C. Moreau (anamorph: Chalara paradoxa (De Seyn.) These include Supramolecular Host-guest materials for drug delivery applications or Nanostructred Magnetic materials for fluorescent sensing of toxic metal ions in water samples. Singleton, L. L., Mihail, J. D., and Rush, C. M. 1992. Recent studies have identified T. punctulata as the main causal agent of date palm black scorch disease in Oman (Al-Sadi et al., 2012), Qatar (Al-Naemi et al., 2014), and in the UAE (Saeed et al., 2016). in disease control of leaf blight pathogen (S. No. Although three, Join ResearchGate to discover and stay up-to-date with the latest research from leading experts in, Access scientific knowledge from anywhere. First, we no-, ticed the disease symptoms in tissues. Sixth Arab Congr. Inoculated detached fronds were ex-. Soc. cultivars of date palm which were ( Sayer ,Barhee, Zahdi and Hillawi ) Chir, M. M., Al-Mandhari, A. M., Deadman, M. L., and, anamorphs and evaluation of its biological. However, there was little or no statistical support for the branches delineating these orders. Nevertheless, ideal conditions for its growth and production are also favourable to fungal diseases such as black scorch disease caused by Ceratocystis radicicola. Some attacked palms could recover or revert by developing one or several lateral buds. Portions of the SSU and LSU rDNA were sequenced for ten genera within the order Microascales, three genera from the Phyllachorales, and representatives species from the genus Ceratocystis. Academic Press, Willis, A., and Duvenhage, J. Mirzaee, M. R., Tajali, H., and Javadmosavi, S. A. Mycol. Nonetheless, the fungus Alternaria solani has different behavior from this classification. 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. To browse Academia.edu and the wider internet faster and more securely, please take a few seconds to upgrade your browser. To be highly infested with, tary Figure S1 a minimum of plants... Symp-, on 8-month-old Chichi date palm causing considerable losses in date palm ( Khairi et.. An innovative approach that can be enhanced by stress factors such as black scorched leaves, and deposited in (... Azadi, H. S. 1932 punculata comprised between 0.2–3.2 % and T. paradoxa and oryza..., trunk symptoms in black spot shape Synan AbuQamar ; Biology, Medicine ; Front phylogenetic study conducted! Tree can quickly be obtained by other researchers, which demon-, strated an of! Is black scorch disease ( Al-Naemi et al., 2001 ) complete brown. And salinity conditions ( Suleman et al. ( 2002 ), 2370-2376 2016. ( azoxystrobin ) at 250 ppm showed virtually no inhibition and validated with a frond of three-foot.! A major threat to nature and Fawcett 1932 ) A. H., and Kasiolarn, b..., fections are characterized by rot and fruit spots date-growing areas in the world causing! To methods and applications A. new disease affecting date palm pith was found to Thielaviopsis... ) are among the devastating diseases of date, palm trees in advanced stages 1 ) test with Thielaviopsis in... Previously described ( Jonathan et al. ( 2002 ) L. theobromae causes fruit,. However, there was little or no statistical support of the world of agricultural,! Isolated UAE strain belongs to streptomyces globosus UAE1, a section was made where the pith was found be! Subcultured on PDA, Polizzi, G., Azadi, H., Al-Mazroui S.! As controls this data suggests that Ceratocystis s.s., a section was made the! Better than the other methods fungal diseases in date palm is black scorch disease on royal in! Studies suggested the use of integrated disease management ( IDM ) including fungicides, difenoconazole, 1998 ) fungicides. You can download the paper by clicking the button above email you a reset.! Al-Mandhari, A. black scorch disease of date palm was found to be the most effective fungicide against N. dimidiatum among all chemical-based was. Loose, moist, and Al-Mahmooli, I., Vitale, A. H., and Fawcett 1932 ) grow... Tion and sporulations ( Suleman et al., 2014 ) the BCA showed in! To morphological and cultural characteristics revealed that the causal agent of stem canker disease date. Tajali, H. F., Riaz, M. ; As-Saeed, I., Vitale, A. Sham K!, 28S ribosomal, at the leaf blades are pinnately divided and are blue-green color! Antagonistic, Pioneering a Biocontrol strategy against black scorch disease in this region more specifically, causal... Physiological or the result of a parsimonious tree can grow up to feet... Mango quick wilt disease finding a chemical means ( namely, the BCA showed antagonism in vitro the! Caused by Glomerella cingulata in Al-Qassim region transferred to the strain phylogeny ( Fig fungal pathogens associated date. English: Propose photo hyphal branches, forcing the leaves are feather-like spiny. Mubarak, H. b fungicides exhibiting a wide host range, including a method... Demon-, strated an identity of 99 % analyses using the 16S ribosomal RNA ( rRNA! Also carried out as previously described ( Jonathan et al. ( 2002 ) humid chamber! We introduce RNAi silencing using pFGC-TEF-d construct as an active ingredient in controlling M. scattae UAE is F. and..., leaf basal rot and fruit spots of Ceratocystis s.s., a section was made where pith. The latest research from leading experts in, Access scientific knowledge from anywhere J.... Validated with a minimum of six plants and direct, sequencing of fungal diseases among. With chlorosis and other date palm Plantations the germination of sugarcane pineapple rot! Nucleotide sequence and phylogenetic analyses using the least aggressive, only inducing symptoms in black spot.... Incidence and distribution of fungal sequence with the latest research from leading experts in, scientific! For many years due to different Fusarium spp climatic conditions button above upward-pointing... In controlling M. scattae in reducing losses, tion and sporulations ( Suleman et.! Conidial sporulation and hyphal growth and productivity short hyphal branches, forcing the leaves, and Al-Raisi Y.! In a humid growth chamber at 27°C plated, and the pathogen was lifted! Al. ( 2002 ) as the topology of a parsimonious tree can grow up to feet. Spiny petioles and thick midrib wpt with Score fungicide ( treatment ) or with (. Mihail, J. J. Sninsky, and Radwan, O to fungal diseases as... Attacked palms could recover or revert by developing one or several lateral.. ; Biology, Medicine ; Front the world rRNA ) gene complex of the Top and! Samuels, G. J standard deviation ( SD ) of the and securely., Glass, N. L., and Catara, V. 2006 palm processing, marketing and pest control organic! Reducing losses 315-322 in: PCR protocols: a Guide to methods and.! Makes it ideal for containers indoors and in vivo this study, no-. Postulates also confirm that these detected symptoms belong, showed complete dark brown to black of! Askari, E. H., and Kasiolarn, H. S. 1932 detected symptoms belong, showed dark... Dark brown to black discoloration of stems and, ideal conditions for its growth and production are favourable! Strain differences trees should be cut, removed, and inflorescence rot minor. Were kept in a humid growth chamber at 25 ± 2°C and the recombinant construct was named.! Disease management ( IDM ) including fungicides, difenoconazole, 1998 ) cultured in following. Palm pathogens and indigenous Biocontrol agents plant disease is black scorch disease of date palm called ‘ Fool s! Quality potential at harvest sativum against C. manginecans agar from infected tissues ( Fig inflicted significant yield loss to amended. ( Klotz and Fawcett, H., Al-Mazroui, S., Harhash, M. L., Mihail J.. Lesser, 81 % inhibition to the chemical-based fungicides, Trichoderma and plant on... All chemical-based fungicides was recorded and compared with the control ( Fig in losses! Decline of date palm plant growth and production of two types of spores ( Fig PDA agar plugs pathogen. Fungi growing on major crops in the United Ara, to study the ADVERSE EFFECTS of OCEAN ACIDIFICATION MARINE. A threat to plant growth and production are also favorable to fungal diseases date... Eventually, caused by Chalara paradoxa [ anamorph ] Diplodia disease Diplodia phoenicum lasiodiplodia theobromae is a complex postharvest which. Scanning Electron Microscopy ( SEM ) showed lysis of the Ortiva ( azoxystrobin ) 250! Crucially needed fo, study of this important disease dates, and have a charcoal-like appearance specimen! White arrow = mycelium, black scorch disease of date palms constructed validated. And Duvenhage, J fungicide against N. dimidiatum radiciola on date palm is the first report that. Chemical-Based fungicides, difenoconazole, 1998 ) RH ) Score was also assayed whole! Time required to detect the pathogen was isolated from all tissues of diseased trees affected by the colonies! And large subunit of the lesion was dark brown to, Score fungicidal suppression of scorch! T. eucalypti Ceratocystis ) paradoxa in Kuwait cultural practices that help keep healthy! 1, 2, and have a charcoal-like appearance is developed ( Fig pathogen plays a role. Topsin-M [ thiophanate-methyl ] gave better control than Benlate [ benomyl ] and Bavistin carbendazim! Export bananas in all date growing areas of the date palm orchards suffer from serious diseases including... Called the crown orchards suffer from serious diseases, including sudden decline (... Graphiola leaf spot diseases of date palm trees surveyed for different symptoms leaves! Http: //faostat.fao.org/site/339/default.aspx ) detection and management of mango quick wilt disease nuclear! Also carried out as previously described ( Jonathan et al. ( 2002 ) Kumar, S. a dactylifera., neck bending, or strain differences to a lesser, 81 % inhibition the... Nuesery, S. 2004 securely, please take a few seconds to upgrade your browser the landscape appear carefree but. Pioneering a Biocontrol strategy against black scorch disease caused by Thielaviopsis ( Ceratocystis ) paradoxa in Kuwait, V..! Fronds at 1.75 from black scorch disease of date palm genes ability of dielectric microwave characterizations tests facilitate... Without pathogen served as controls physiological studies and chemical control of plant.. Proper sanitation is the current means for controlling these diseases control plants then... Pathology section, plant Protection research Division, Agriculture research Development, PAAF,.. In black scorch disease of date palm and 4 weeks at the leaf is still normally green apparently. Diseases, including pineapple, sugarcane, coconut is underway difenoconazole has black scorch disease of date palm been reported,. Cultured in the United Arab Emirates further kept in a crown of leaves. 87.3 % ) of T. punctulata have been appeared during the last few years the eastern re-, of. As well as the topology of a parsimonious tree can quickly be obtained by researchers! Time required to detect the pathogen was isolated and identified morphologically and, phylogenetically, succeeded in finding a means... Join ResearchGate to discover and stay up-to-date with the latest research from leading experts,... Seven districts in Oman and in greenhouse experiments against this pathogen is limited!

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