Vol. 9 (5) : September-October 2018 issue
Green Farming Vol. 9 (5) : 819-823 ; September-October, 2018
Role of peroxidase and phenylalanine ammonia lyase enzymes in conferring resistance against fusarium wilt (Fusarium oxysporum f. sp. dianthi) of carnation
PURNACHANDRA GOWDA G.a1*, DHANANJAYA M.V.b2, DEVAPPA V.c3, FAKRUDIN B.d4, ASHWATH C.e5, SRIRAM S.f6 and RAJIV KUMARe7
aDept. of Floriculture & Landscape Architecture, cDeptt. of Plant Pathology, dDeptt. of Biotech. & Crop Improvement College of Horticulture, University of Horticultural Sciences, GKVK Post, Bengaluru - 560 065 (Karnataka)
bDivision of Ornamental Crops, eDivision of Floriculture and Medicinal Crops, fDivision of Plant Pathology, ICAR-Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore - 560 089 (Karnataka)
Designation : 1Ph.D. Scholar *(purnachandra.gowda@gmail.com), 2,5,6,7Principal Scientist, 3,4Professor
Subject : Horticulture (Spices, Ornamental & Plantation Crops, Floriculture and Landscape Architecture etc.)
Paper No. : P-7371
Total Pages : 5
Received : 25 July 2018
Revised accepted : 24 August 2018
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Citation :
PURNACHANDRA GOWDA G., DHANANJAYA M.V., DEVAPPA V., FAKRUDIN B., ASHWATH C., SRIRAM S. and RAJIV KUMAR. 2018. Role of peroxidase and phenylalanine ammonia lyase enzymes in conferring resistance against fusarium wilt (Fusarium oxysporum f. sp. dianthi) of carnation. Green Farming Vol. 9 (5) : 819-823 ; September-October, 2018
ABSTRACT
An investigation to understand the role of peroxidase and phenylalanine ammonia lyase enzymes in conferring resistance against Fusarium oxysporum f. sp. dianthi in carnation was conducted at the Division of Floriculture and Medicinal Crops, ICAR-Indian Institute of Horticultural Research, Hesarghatta, Bangalore. It was observed that both peroxidase and phenylalanine ammonia lyase enzymes differed significantly among the inoculated and uninoculated plants as well as among the resistant and susceptible genotypes. The inoculated plants recorded the highest activity of both peroxidase (0.503 ? abs/min/g FW) and phenylalanine ammonia lyase (0.192 µg cinnamic acid/g/min). On the other hand, the resistant genotypes Gioele and Praga recorded higher peroxidase activity (1.032 and 0.873 ? abs/min/g FW respectively) than the susceptible genotypes Dark Dona and Malaga (0.207 and 0.202 ? abs/min/g FW respectively). Similarly, the phenylalanine ammonia lyase activity was greater in the resistant genotypes Gioele and Praga (0.255 and 0.215 µg cinnamic acid/g/min respectively) compared to the susceptible genotypes Dark Dona and Malaga (0.110 and 0.125 µg cinnamic acid/g/min respectively).
Key words :
Carnation genotypes, Fusarium wilt, Peroxidase, Phenylalanine ammonia lyase, Resistance.
