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Home > Archives > Volume 20, No 7 (2022) > Article

DOI: 10.14704/nq.2022.20.7.NQ33157

The effect of Henna (Lawsonia inermis L.) leaves extracts on inhibition of Lantana camara and Rose hybrid fungal leaves spot pathogens.

Hannen Shaker Yaser and Mohammed H. Abass

Abstract

Four different Henna ( Lawsonia inermis L.) leaves extracts (Hot; cold water; acetone and ethanol solvents) were evaluated in their inhibitory effect on fungal leaves spot pathogens of Rose hybrid and Lantana camara plants. Three important fungal pathogens (Alternaria alternate; Botrytis cinerea and Fusarium chlamydosporum) were isolated and identified on morphometric bases and molecular diagnosis by ITS primers. Results revealed the significant inhibition effect of hot water extracts in inhibition of all examined fungal radial growth with a inhibition percent of 68.21%; followed by acetone extract which was 59.59%. The preliminary test of active substances in different henna leaves extracts showed that both hot water and acetone extracts had the highest number of active ingredients; while the GC MS profile analysis proved that the hot water contains 27 different compounds most dominantly 4,5-Dimethyl-4-hexen-3-one with a percentage area of 23.87%; whereas the acetone extract contains 10 different compounds most dominantly cis- Vaccenic acid with a percentage area of 40.56%. Results of henna extracts (at concentration of 2%) inhibition for the fungal pathogenicity on lantana and rose plants revealed that hot water extract decreased the disease severity from 85.50% to 15.25% with A. alternata; 55.25% to 15.55% with B. cinerea and 60.50% to 20.25% with F. chlamydosporum in lantana plants. Similar trends of efficiency results revealed in rose plants. Promising results of hot water extract are highlighted in the current study.

Keywords

Antifungal; extracts; henna; ITS primers; ornamental plants.

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