Abdul MAJEED, Zahir MUHAMMAD, Zabeeh ULLAH, Rafi ULLAH, Habib AHMAD

Late Blight of Potato (Phytophthora infestans) I: Fungicides Application and Associated Challenges

Potato (Solanum tuberosum L.) has been remained an important agricultural crop in resolving global food issues through decades. The crop has experienced enormous growth in terms of production throughout the world in recent decades because of improvement in agricultural mechanization, fertilizers application and irrigation practices. Nevertheless, a significant proportion of this valuable crop is still vulnerable to losses due to prevalence of different viral, bacterial, fungal and nematodes infestations. Late blight, caused by Phytophthora infestans (Mont.) de Bary, is one of the most threatening pathogenic diseases which not only results in direct crop losses but also cause farmers to embrace huge monetary expenses for disease control and preventive measures. The disease is well known for notorious ‘Irish Famine’ which resulted in drop of Irish population by more than 20% as result of hunger and potato starvation. Globally, annual losses of crop and money spend on fungicides for late blight control exceeds one trillion US dollars. This paper reviews the significance of late blight of potato and controlling strategies adopted for minimizing yield losses incurred by this disease by the use of synthetic fungicides. Advantages and disadvantages of fungicides application are discussed.

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Axel C, Zannini E, Coffey A, Guo J, Waters DM, Arendt EK. 2012. Ecofriendly control of potato late blight causative agent and the potential role of lactic acid bacteria: a review. App. Microbiol. Biotechnol., 96(1): 37-48.

Brylinska M, Sobkowiak S, Stefanczyk E, Sliwka J. 2016. Potato cultivation system affects population structure of Phytophthora infestans. Fungal Ecol., 20: 132-143.

Chern LL, Ko WH, Tang CS. 1996. Factors affecting yields of alpha hormones of Phytophthora parasitica obtained by adsorption.

Can. J. Microbiol., 42: 172–176. Clayton RC, Shattock RC. 1995. Reduced fungicide inputs to control Phytophthora infestans in potato cultivars with high levels of polygenic resistance. Potato Res., 38(4): 399-405.

Cohen Y, Rubin E, Hadad T, Gotlieb D, Sierotzki H, Gisi U. 2007. Sensitivity of Phytophthora infestans to mandi propamid and the effect of enforced selection pressure in the field. Plant Pathol., 56: 836–842. doi: 10.1111/j.1365-3059.2007.01625.x

Cohen Y. 1996. U.S. Patent No. 5,494,684. Washington, DC: U.S. Patent and Trademark Office.

Colon LT, Turkensteen LJ, Prummel W, Budding DJ, Hoogendoorn J. 1995. Durable resistance to late blight (Phytophthora infestans) in old potato cultivars. European J. Plant Pathol., 101(4): 387-397.

Deahl KL, Inglis DA, DeMuth SP. 1993. Testing for resistance to metalaxyl in Phytophthora infestans isolates from northwestern Washington. American Potato J., 70(11): 779-795. Delen, N. 2016. Fungicides. Turkiye, Nobel Press, ISBN no:978- 605-320-347-6.

FAOSTAT. 2016. Food and Agricultural Organization Statistical database, Crop production. http://faostat3.fao.org/download/ Q/QC/E (accessed on 1st January 2016)

Fry WE. 1998. Late blight of potatoes and tomatoes. Department of Plant Pathology, NYS College of Agriculture and Life Sciences, Cornell University, Ithaca, NY

Fry WE. 2008. Phytophthora infestans, the plant (and R gene) destroyer. Mol. Plant Pathol., 9: 385-402.

Gisi U, Cohen Y. 1996. Resistance to phenylamide fungicides: a case study with Phytophthora infestans involving mating type and race structure. Annual Rev. Phytopathol., 34(1): 549-572.

Gisi U, Sierotzki H. 2008. Fungicide modes of action and resistance in downy mildews. European J. Plant Pathol., 122(1): 157-167.

Goodwin SB, Smart CD, Sandrock RW, Deahl KL, Punja ZK, Fry WE. 1998. Genetic change within populations of Phytophthora infestans in the United States and Canada during 1994 to 1996: Role of migration and recombination. Phytopathol., 88(9): 939- 949.

Goodwin SB, Sujkowski LS, Fry WE. 1996. Widespread distribution and probable origin of resistance to metalaxyl in clonal genotypes of Phytophthora infestans in the United States and western Canada. Phytopathol., 86(7): 793-799.

Haverkort AJ, Boonekamp PM, Hutten R, Jacobsen E, Lotz L, Kessel G, Visser R, van der Vossen E. 2008. Societal costs of late blight in potato and prospects of durable resistance through cis-genic modification. Potato Res., 51(1): 47–57.

Inglis DA, Johnson DA, Legard DE, Fry WE, Hamm PB. 1996. Relative resistances of potato clones in response to new and old populations of Phytophthora infestans. Plant Disease, 80(5): 575-578.

Jmour W, Hamada W. 2006. First report of A2 mating type of Phytophthora infestans in Tunisia using molecular markers and some observations on its metalaxyl resistance. Tun. J. Plant Prot., 1: 85-92.

Jung G, Dicklow B, Jo Y, Chang S, Wick R. 2007. Chemical classes and modes of action for fungicides registered for use on turf grasses. University of Massachusetts-Amherst.

Kankwatsa P, Hakiza JJ, Olanya M, Kidenamariam HM, Adipala E. 2003. Efficacy of different fungicide spray schedules for control of potato late blight in Southwestern Uganda. Crop Prot., 22(3): 545-552.

Kato M, Mizubuti ES, Goodwin SB, Fry WE. 1997. Sensitivity to protectant fungicides and pathogenic fitness of clonal lineages of Phytophthora infestans in the United States. Phytopathol., 87:973-978.

Majeed A, Ahmad H, Ali M, Khan H. 2014b. Effect of systemic and contact fungicides on late blight disease and tuber yield of potato. J. Agric. Technol., 10(1): 209-17.

Majeed A, Ahmad H, Chaudhry Z, Jan G, Alam J, Muhammad Z. 2011. Assessment of leaf extracts of three medicinal plants against late blight of potato in Kaghan valley, Pakistan. J. Agric. Technol., 7(4): 1155-1161.

Majeed A, Chaudhry Z, Muhammad Z. 2014a. Changes in Foliar Glycoalkaloids Levels of Potato (Solanum tuberosum) Triggered by Late Blight Disease Severity. Int. J. Agric. Biol., 16(3): 609-613.

Majeed A, Chaudhry Z, Muhammad Z. 2014c. Variation in the Aggressiveness of Phytophthora infestans Pathotypes Collected from Different Potato Fields of Khyber Pakhtunkhwa (Pakistan). Int. J. Agric. Biol., 16(4), 807-812.

Majeed A, Chaudhry Z, Haq I, Muhammad Z, Rasheed H. 2015. Effect of aqueous leaf and bark extracts of Azadirachta indica A. Juss, Eucalyptus citriodora Hook and Pinus roxburghii Sarg. on late blight of potato. Pak. J. Phytopathol., 27(1): 13-18.

Mantecon JD. 2007. Potato yield increases due to fungicide treatment in Argentinian early blight (Alternaria solani) and late blight (Phytophthora infestans) field trials during the 1996-2005 seasons. Fung. Nemat. Tests., 55:221.

Miller JS, Johnson DA, Hamm PB. 1998. Aggressiveness of isolates of Phytophthora infestans from the Columbia Basin of Washington and Oregon. Phytopathol., 88(3): 190-197.

Mukalazi J, Adipala E, Sengooba T, Hakiza JJ, Olanya M, Kidanemariam HM. 2001. Metalaxyl resistance, mating type and pathogenicity of Phytophthora infestans in Uganda. Crop Prot., 20(5): 379-388.

Sajid ZA. 2012. Biochemical characterization of in vitro salt tolerant cell lines and regenerated plants of potato (Solanum tuberosum L.). PhD Thesis University of the Punjab.

Saville A, Graham K, Grünwald NJ, Myers K, Fry WE, Ristaino JB. 2015. Fungicide sensitivity of US genotypes of Phytophthora infestans to six oomycete-targeted compounds. Plant Dis., 99(5): 659-666.

Schepers H. 1996. Rain fastness of fungicides used to control Phytophthora infestans. In 13th European Association of Potato Research Conference (pp. 374-375).

Schumann GL, D’Arcy CJ. 2000. Late blight of potato and tomato. The Plant Health Instructor. DOI: 10.1094/PHI-I-2000-0724-01 Schwinn FJ, Margot P. 1991. Agricultural Division, Ciba-Geigy AG, 4002 Basle, Switzerland. Phytophthora Infestans, the Cause of Late Blight of Potato, 7: 225.

Song J, Bradeen JM, Naess SK, Raasch JA, Wielgus SM, Haberlach GT, Helgeson JP. 2003. Gene RB cloned from Solanum bulbocastanum confers broad spectrum resistance to potato late blight. Proc. National Acad. Sci., 100(16): 9128-9133.

Vincelli P, Dixon E. 2002. Resistance to QoI (strobilurin-like) fungicides in isolates of Pyricularia grisea from perennial ryegrass. Plant Dis., 86(3): 235-240.

Whisson SC, Boevink PC, Wang S, Birch PR. 2016. The cell biology of late blight disease. Current Opinion in Microbiology, 34: 127-135.

Yuan SK, Liu XL, Si NG, Dong J, Gu BG, Jiang H. 2006. Sensitivity of Phytophthora infestans to flumorph: in vitro determination of baseline sensitivity and the risk of resistance. Plant Pathol., 55(2): 258-263.

Yuen JE, Andersson B. 2013. What is the evidence for sexual reproduction of Phytophthora infestans in Europe?. Plant Pathol., 62(3): 485-491.

Zadoks JC. 2008. The potato murrain on the European continent and the revolutions of 1848. Potato Res 51:5–45