Elicitation of Novel Trichogenic-Lipid Nanoemulsion Signaling Resistance Against Pearl Millet Downy Mildew Disease

Nandini, Boregowda and Puttaswamy, Hariprasad and Prakash, Harischandra Sripathy and Adhikari, Shivakanthkumar and Jogaiah, Sudisha and Nagaraja, Geetha (2020) Elicitation of Novel Trichogenic-Lipid Nanoemulsion Signaling Resistance Against Pearl Millet Downy Mildew Disease. biomolecules, 10 (1).

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Abstract

Nanoemulsion was formulated from membrane lipids of Trichoderma spp. with the non-ionic surfactant Tween 80 by the ultrasonic emulsification method. Nanoemulsion with a droplet diameter of 5 to 51 nm was obtained. The possible effects of membrane lipid nanoemulsion on pearl millet (PM) seed growth parameters and elicitation of downy mildew (DM) disease resistance in PM was analyzed to develop an eco-friendly disease management strategy. Seed priming with nanoemulsion illustrates significant protection and elevated levels of early defense gene expression. Lipid profiling of Trichoderma spp. reveals the presence of oleic acid as a major fatty acid molecule. The prominent molecule in the purified lipid fraction of T. brevicompactum (UP-91) responsible for the elicitation of induction of systemic resistance in PM host against DM pathogen was predicted as (E)-N-(1, 3-dihydroxyoctadec-4-en-2yl) acetamide. The results suggest that protection offered by the novel nanoemulsion formulation is systemic in nature and durable and offers a newer sustainable approach to manage biotrophic oomycetous pathogen.

Item Type: Article
Uncontrolled Keywords: nanoemulsion; Sclerospora graminicola; lipids; pearl millet; seed priming; Trichoderma spp
Subjects: B Life Science > Biotechnology
Divisions: Department of > Biotechnology
Depositing User: Mr Umendra uom
Date Deposited: 03 Feb 2021 05:37
Last Modified: 03 Feb 2021 05:37
URI: http://eprints.uni-mysore.ac.in/id/eprint/15666

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