Antifungal action of Lippia alba essential oil in Rhizoctonia solani disease management

Abstract

Plant pathogens damage agriculture sector to a large extent, resulted in poor crop yield and quality. A well followed practice to curb plant diseases are mostly involved with application of conventional fungicides (synthetic chemical). However, their continuous and uncontrolled use has emerged as big challenge for humans due to the hazardous effect to the environment. This can also leads to the development of resistance to plant pathogens. Green chemistry based approaches have revolutionized the development of new strategies to curb plant diseases. Natural products mainly essential oils have potential to minimize the use of synthetic fungicides for some extent. Therefore, current study was conducted to find out alternative of disease managements strategies against Rhizoctonia solani damping off. The rationale was to study the effect of linalool rich Lippia essential oil against two R. solani isolates infecting commercially important crops, Ocimum basilicum and Plantago ovata. Current study revealed that the use of essential oil emulsion can enhance the survivability of seedlings up to 98% and 92% in treated O. basilicum and P. ovata pots as comparison to non-treated pots 20% and 15%, respectively. Headspace-gas chromatography of treated soil samples have detected minimum oil components leading to lower exposures. Herein, we demonstrated a successful management of damping off disease on two commercially important crops for two consecutive years at nurseries. The isolates of R. solani were further characterized up to sub group level for the first time. In conclusion, Lippia essential oil could be used as biopesticide to treat damping of disease at nursery level.

Innovative methods for extraction of essential oils from medicinal plants

“…Another disadvantage is that elevated pressure requires a more considerable upfront capital expenditure. Stashenko et al, 2004;Braga et al, 2005;Lima Juiz et al, 2015;Santos et al, 2016;Saroj et al, Antioxidant and antimicrobial activity (Patel et al, 2006;Janet et al, 2015;Baptista et al, 2018;Dzamic et al, 2009) Eugenia caryophyllata Thunb; Myrtaceae (Buds, leaves, and stems) Clove Eugenol, eugenol acetate, trans-caryophyllene Antioxidant, antimicrobial and anti-inflammatory activity (Sohlait, 2015;Wenqiang et al, 2007;Ivanovic et al, 2011;Mahboubi and Mahboubi, 2015;Sohilait et al, 2018;Öztürk and Özbek, 2005).…”

An overview of research of essential oils by self‐organizing maps: A novel approach for meta‐analysis study

“…Fungi such as Aspergillus spp., Botrytis cinerea , Colletotrichum capsici , Fusarium oxysporum , F. solani , R. solani , and Sclerotinia sclerotiorum reduce shelf life and market values for food commodities. Also, there is the danger caused by mycotoxins to human health (Saroj et al., 2019; Silva Bomfim et al., 2020).…”

“…Among the oxygenated compounds, phenols, alcohols, aldehydes, ketones, esters, and oxides are the main classes compounds (Bazargani & Rohloff, 2016; Khan et al., 2019). Terpenes and their oxygenated derivatives, terpenoids, are often the main constituents of EOs, followed by phenylpropanoids (Bassolé & Juliani, 2012; Saroj et al., 2019). Furthermore, monoterpenes comprise almost 90% of the oils' composition, covering an extensive range of structures (Bakkali et al., 2008).…”

Fungicidal activity of seeds of Abrus precatorius L., Datura metel L., and Diploknema butyracea (Roxb.) H.J. Lam against phytopathogenic fungi

“…These constituents have potent pesticidal compounds, as evidenced by both in vivo and in vitro studies demonstrating their efficacy 10,11 . Recent studies have reported the antimicrobial and antifungal efficacy of plant extracts against phytopathogenic fungi and associated fungal diseases 12,13,14 . The plant extracts from Andrographis paniculata Wall, Backhousia citriodora F.…”