A Date Palm Disease (Bunch Blight) Caused by Acremonium strictum (Cephalosporium) in Saudi Arabia

Mohammad F. Rashed

Abstract


Acrimonium strictum is reported as a new causal agent of a disease it names (bunch blight) in date palm (phoenix dactylefera) in Saudi Arabia. Symptoms and necrosis caused by A. strictum in susceptible cultivars showed small brown necrosis streak at midrib of fruit stalk in an early stage. There was an increase in number and size as the disease progresses; then extended to the bases of fruit strands due to death of bases and strands wilt, the infection of fruit strand caused drying the fruits and their fall. A. strictum attacks the bunches and move quickly inside and out the tissues causing brown necrosis and death of the tissues. A. strictum was isolated and pathogenicity tests were repeated more than once during two seasons and the identifications was caried several ways to confirm The confirmation of results by Biolog technique and DNA sequence were done. The proper temperature for infection was between 20-30 °C and the optimum 25 °C. When testing the susceptibility of varieties of infection, more varieties like Medjool, Saqae and Kholas were susceptible to infection and the most resistant to infection were Barhy and Khidri. The best results in the control of the fungus in vitro were due to use of Karpendazem followed Topsen M70, at the same time, the worst results were seen with the use of Abredion followed Karant (Cupper hydroxide).


Keywords


Acrimonium; date palm; fruit stalk; fruit strand; bunch; biology; DNA

References


Alzayat, M. M. 2002. Pastes and diseases of date palm in Saudi Arabia and its control. FAO and Ministry of Agriculture, Al-Riyadh, Saudi Arabia, pp. 369.

Ammar, M. I., M. A. Kamhawy and M. F. Rashed. 2004. Basal leaf-stalk rot of tissue culture date palm caused by Fusarium moniliforme. Egyptian Journal of Applied Sciences, 19: 23-24.

Barakat, F. M., K. K. Sabet and S. A. Hussein. 1992. Pathological studies on the deterioration of date palm off-shoots caused by Botryodiplodia theobromae. Bulletin of Faculty of Agriculture.

Barnett, H. L. and B. B. Hunter. 1972. Illustrated genera of imperfect fungi.

Brown, J. G. and K. D. Butler. 1938. Inflorescence blight of the date palm. Journal of Agricultural Research, 57: 313-318.

Chang, J., Y. Tani, H. Naitou, N. Miyata and H. Seyama. 2013. Fungal Mn oxides supporting Mn (II) oxidase activity as effective Mn (II) sequestering materials. Environmental technology, 34: 2781-2787.

Chen, G.-T., M. Yang, Y. Song, Z.-Q. Lu, J.-Q. Zhang, H.-L. Huang, L.-J. Wu and D.-A. Guo. 2007. Microbial transformation of ginsenoside Rb1 by Acremonium strictum. Applied Microbiology and Biotechnology, 77: 1345-1350.

El-Meleigi, M. A. 2004. First report on two new diseases of date palm (Phoenix dactylifera), rachis blight caused by Seranomyces californica and wilt of fruit bunch caused by Fusarium moniliforme in Saudi Arabia. International Conference on Date Palm. King Saud University, Qassim Branch, College of Agriculture and Veterinary Medicine Burydah, Saudi Arabia, p. 49-61.

El-Shafey, H. A., M. F. Abd-El-Rahim and M. M. Refaat. 1979. A new Cephalosporium-wilt disease of grain sorghum in Egypt. Egyptian Phytopathology Congress. The Egyptian Phytopathology Society, Cairo, Egypt.

Ibraheem, K. N. 1984. Regional Project for Palm and Dates Research Centre in the Near East and North Africa. Final report on date palm orchards in Iraq.

Klotz, L. J. and H. S. Fawcett. 1932. Black scorch of the date palm caused by Thielaviopsis paradoxa. Journal of Agricultural Research, 44: 155-166.

Molan, A. L., S. De and L. Meagher. 2009. Antioxidant activity and polyphenol content of green tea flavan-3-ols and oligomeric proanthocyanidins. International Journal of Food Sciences and Nutrition, 60: 497-506.

Pryce, T. M., S. Palladino, I. D. Kay and G. W. Coombs. 2003. Rapid identification of fungi by sequencing the ITS1 and ITS2 regions using an automated capillary electrophoresis system. Medical Mycology, 41: 369-381.

Rashed, M. F. 2014. Tip dieback disease of date palm leaves in Egypt. Journal of Biological and Chemical Environmental Sciences, 9.

Rashed, M. F. and N. E. Abdel Hafeez. 2001. Decline of date palm trees in Egypt. 2nd International Conference on Date Palm. p. 25-27.

Rashed, M. F., F. M. Barakat and K. K. Sabet. 2007. Evaluation of some fungicides and biocontrol agent to control black scorch disease of date palm caused by Thielaviopsis paradoxa. 4th Symposium on Date Palm. Saudi Arabia, pp. 315.

Rivera-Varas, V. V., T. A. Freeman, N. C. Gudmestad and G. A. Secor. 2007. Mycoparasitism of Helminthosporium solani by Acremonium strictum. Phytopathology, 97: 1331-1337.

Sharvelle, E. G. 1961. The nature and uses of modern fungicides.

Singh, M. P. 2009. Application of Biolog FF MicroPlate for substrate utilization and metabolite profiling of closely related fungi. Journal of Microbiological Methods, 77: 102-108.

Specht, L. P. 1989. Sporulation and survival of conidia of Cephalosporium gramineumas influenced by soil pH, soil matric potential and soil fumigation. Phytopathology, 79: 787.

Vincent, J. M. 1947. Distortion of fungal hyphæ in the presence of certain inhibitors. Nature, 159: 850-850.


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DOI: 10.33687/phytopath.007.01.2238

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