FIRST REPORT OF BACTERIAL HEAD ROT DISEASE CAUSED BYPECTOBACTERIUM ATROSEPTICUM ON SUNFLOWER IN PAKISTAN

Shahzad Asad, Anjum Munir, Ayub Khan, Ishaq Ahmad, Muhammad Arshad

Abstract


is an important oil seed crop in Pakistan. During a field visit at National Agricultural Research Center (NARC), Islamabad, Pakistan bacterial head rot disease caused by Pectobacterium atrosepticum (formly Erwinaia caratovora subsp. atroseptica) has been observed on both local and exotic hybrids of Sunflower crop. Pathogenicity test has been carried out to fulfill Koch’s postulates. White and creamy colony growth was observed upon isolation and purification of the bacteria. Biochemical tests were conducted at Crop Diseases Research Institute (CDRI), NARC, Islamabad. Pathogenicity test has confirmed the presence of Pectobacterium atrosepticum on sunflower. This is first report documented this pathogen on sunflower crop in Pakistan.


Keywords


Helianthus annuus, head rot disease, Pectobacterium atrosepticum, Pakistan.

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References


Anonymous 2013. Growing advice to cultivate Oilseed on maximum area land. Zaria media team. Pakistan Oilseed Development Board. Jan, 1, 2013.

Bastas, K.K., H, Hekimhan., S, Madan and M, Tor. 2009. First report of Bacterial stalk and head rot disease caused by Pectobacterium astrosepticum on Sunflower in Turkey. Plant Disease. 93(12):1352

De Boer, S.H and A. Kelman. 2001. Gram negative bacteria: Erwinia soft rot group. Pages 56-72. In: Laboratory guide for identification of plant pathogenic bacteria. N.M. Schaad, J.B. Jones and W. Chun, Third Ed, APS press, ST. Paul, MN,USA,398pp.

Schaad, N.W., J.B. Jones and W. Chun. 2001. Laboratory guide for identification of plant pathogenic bacteria. Third Ed, APS press, ST. Paul, MN, USA, 398pp.


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Pakistan Journal of Phytopathological
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