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Quick decline of mango in Pakistan: Survey and pathogenicity of fungi isolated from mango tree and bark beetle

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Masood, A., Saeed, S., da Silveira, S. F., Akem, C. N., Hussain, N. and Farooq, M. (2011) Quick decline of mango in Pakistan: Survey and pathogenicity of fungi isolated from mango tree and bark beetle. Pakistan Journal of Botany, 43 (3). pp. 1793-1798.

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Article Link: http://www.scopus.com/inward/record.url?eid=2-s2.0...

Publisher URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-79959633780&partnerID=40&md5=7179b156077b5b731c250083c8a40239

Abstract

Mango sudden death syndrome (MSDS) has become an increasing threat for mango production all around the world. The present study was conducted to identify the association of pathogenic fungi with mango quick decline tree and the bark beetle. During survey, the most evident symptoms of this disease were gummosis and rotting, cankers and vascular discoloration along with holes made by Hypocryphalus mangiferae.The mango varieties viz., Malda and Ratol were found to be more tolerant against this disease. From diseased tree as well as from H. mangiferae, the most frequently isolated fungi were Lasiodiplodia theobromae, Ceratocystis fimbriata and Phomopsis sp. The isolation of C.fimbriata from beetle on PDA was relatively at low frequency (2.0%) as compared to L. theobromae and Phomopsis (24% and 6.0%). By carrotdisc technique, the isolation of C. fimbriata was significantly higher (7.33%) but L. theobromae and Phomopsis sp., were not isolated. The formers fungi were re-isolated from artificially inoculated and symptomatic mango plants. After six months of inoculations, disease symptomsi.e., wilting, oozing and black streaks were developed which showed significant differences among all treatments. Our findings suggested that C.fimbriata and L. theobromae are both pathogenic to mango causing mango quick decline in Pakistan. Both fungi were frequently isolated fromdiseased tree as well as H. mangiferae which may be involved in the dissemination and as a facilitating agent for the entry of the pathogens.

Item Type:Article
Keywords:Botryosphaeria rhodina Ceratocystis fimbriata Coleoptera Fungi Hypocryphalus Hypocryphalus mangiferae Phomopsis Scolytinae
Subjects:Plant culture > Fruit and fruit culture > Culture of individual fruits or types of fruit
Plant pests and diseases > Plant pathology
Live Archive:28 Mar 2019 03:06
Last Modified:03 Sep 2021 16:45

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