Journal
PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY
Volume 71, Issue 1-3, Pages 96-105Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.pmpp.2007.12.003
Keywords
Field study; Induced resistance; Jasmonate analogon; Sclerospora
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Funding
- Department of Science and Technology, Government of India
- Indian Council of Agricultural Research, New Delhi
- Max-Planck-Society
- German Academic Exchange Service (DAAD)
- Department of Science and Technology, New Delhi, India
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The synthetic 1-oxo-indanoyl-L-isoleucine methyl ester (Ind-Ile-Me) represents a highly active mimic of octadecanoic phytohormones, which are involved in plant defenses against pathogens and pests. Seed treatments and foliar spray with Ind-Ile-Me were tested for induced resistance against downy mildew disease caused by the phytopathogenic oomycete Sclerospora graminicola in pearl millet (Pennisetum glaucum) under greenhouse and field conditions. Under greenhouse conditions, a 50% protection level was achieved after seed treatment. Seed treatment in combination with foliar spray resulted in 60% protection. The induction of resistance was correlated with the enhanced activities of defense-related proteins such as phenylalanine-ammonia-lyase, peroxidase, and enhanced level of hydroxyproline-rich glycoproteins. Under field conditions, a maximum protection of 62% was recorded upon seed treatment along with foliar spray. Hence, it infers that Ind-Ile-Me can be used as a valuable protection compound at least in downy mildew disease management. (C) 2008 Elsevier Ltd. All rights reserved.
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