In:
Pest Management Science, Wiley, Vol. 76, No. 4 ( 2020-04), p. 1413-1421
Abstract:
Plants emit volatile organic compounds (VOCs) with several functions, including toxicity to plant‐parasitic nematodes (PPNs). However, the toxicity of VOCs from watercress leaves ( Nasturtium officinale ) and passion fruit seeds ( Passiflora edulis ) against PPNs has not yet been studied. RESULTS Biofumigation with watercress leaves and passion fruit seeds reduced the infectivity and reproduction of Meloidogyne incognita in tomato plants. The VOCs emitted by watercress leaves and passion fruit seeds caused immobility of M. incognita second‐stage juveniles (J 2 ). The reduction in infectivity and reproduction of M. incognita reached 89% and 99%, respectively, when J 2 were exposed to watercress VOCs. Additionally, water exposed to VOCs emitted by watercress caused 79% M. incognita J 2 mortality. The volatilome of the toxic water contained 12 compounds, mainly alcohols. The emissions from watercress leaves and passion fruit seeds contained 26 and 12 compounds, respectively, according to gas chromatography–mass spectrometry analysis. The 1‐octanol occurring in watercress emissions demonstrated in vitro and in vivo nematicidal activity against M. incognita , with a lethal dose necessary to cause 50% mortality (LC 50 ) of 382.5 μg mL −1 . CONCLUSIONS Watercress leaf and passion fruit seed macerates emitted VOCs with nematicidal activity against M. incognita . The compound 1‐octanol identified in watercress emissions may be useful for the nematicide‐producing industry. © 2019 Society of Chemical Industry
Type of Medium:
Online Resource
ISSN:
1526-498X
,
1526-4998
Language:
English
Publisher:
Wiley
Publication Date:
2020
detail.hit.zdb_id:
2003455-6
SSG:
12
