Nematicidal activity of verrucarin A and roridin A isolated from Myrothecium verrucaria against Meloidogyne incognita

2018 ◽  
Vol 148 ◽  
pp. 133-143 ◽  
Author(s):  
Loan Thi Thanh Nguyen ◽  
Ja Yeong Jang ◽  
Tae Yoon Kim ◽  
Nan Hee Yu ◽  
Ae Ran Park ◽  
...  
Keyword(s):  
Meloidogyne Incognita ◽  
Nematicidal Activity ◽  
Myrothecium Verrucaria

scholarly journals Bacillus cereus strain S2 shows high nematicidal activity against Meloidogyne incognita by producing sphingosine

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Huijuan Gao ◽  
Gaofu Qi ◽  
Rong Yin ◽  
Hongchun Zhang ◽  
Chenggang Li ◽  
...  
Keyword(s):  
Bacillus Cereus ◽  
Meloidogyne Incognita ◽  
Nematicidal Activity

scholarly journals Pathogenicity and Volatile Nematicidal Metabolites from Duddingtonia flagrans against Meloidogyne incognita

2021 ◽  
Vol 9 (11) ◽  
pp. 2268
Author(s):  
Xiaoyu Mei ◽  
Xin Wang ◽  
Guohong Li
Keyword(s):  
Meloidogyne Incognita ◽  
Plant Pathogens ◽  
Plant Root ◽  
Nematicidal Activity ◽  
Mass Spectrometry Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Egg Mass ◽  
Duddingtonia Flagrans ◽  
Egg Hatching ◽  
Root Knot Nematodes

Plant parasitic nematodes, especially parasitic root-knot nematodes, are one of the most destructive plant pathogens worldwide. The control of plant root-knot nematodes is extremely challenging. Duddingtonia flagrans is a type of nematode-trapping fungi (NTF), which produces three-dimensional adhesive networks to trap nematodes. In this study, the pathogenicity and volatile organic compounds (VOCs) of the NTF D. flagrans against the plant root-knot nematode, Meloidogyne incognita, were investigated. The predatory process of D. flagrans trapping M. incognita was observed using scanning electron microscopy. Gas chromatography-mass spectrometry analysis of the VOCs from D. flagrans led to the identification of 52 metabolites, of which 11 main compounds were tested individually for their activity against M. incognita. Three compounds, cyclohexanamine, cyclohexanone, and cyclohexanol, were toxic to M. incognita. Furthermore, these three VOCs inhibited egg hatching of M. incognita. Cyclohexanamine showed the highest nematicidal activity, which can cause 97.93% mortality of M. incognita at 8.71 µM within 12 h. The number of hatched juveniles per egg mass after 3 days was just 8.44 when treated with 26.14 µM cyclohexanamine. This study is the first to demonstrate the nematicidal activity of VOCs produced by D. flagrans against M. incognita, which indicates that D. flagrans has the potential to biocontrol plant root-knot nematodes.

scholarly journals Nematicidal Constituents from the Essential Oil ofChenopodium AmbrosioidesAerial Parts

2011 ◽  
Vol 8 (s1) ◽  
pp. S143-S148 ◽  
Author(s):  
Chuan Qi Bai ◽  
Zhi Long Liu ◽  
Qi Zhi Liu
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Essential Oil ◽  
Meloidogyne Incognita ◽  
Nematicidal Activity ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Components ◽  
Chenopodium Ambrosioides ◽  
Chinese Medicinal Herb ◽  
Aerial Parts

Essential oil of Chinese medicinal herb,Chenopodium ambrosioidesaerial parts was found to possess nematicidal activity against the root-knot nematodes,Meloidogyne incognita. The essential oil ofC. ambrosioideswas obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 27 components of the essential oil were identified. The principal compounds inC. ambrosioidesessential oil were (Z)-ascaridole (27.27%),ρ-cymene (19.05%), isoascaridole (14.75%),α-pinene (6.33%) andα-terpinene (5.12%). Bioactivity-guided chromatographic separation of the essential oil on repeated silica gel columns led to isolate three volatile components ((Z)-ascaridole,ρ-cymene and isoascaridole) from the essential oil. The essential oil and (Z)-ascaridole exhibited strong nematicidal activity againstM. incognitawith LC50values of 49.55 μg/mL and 32.79 μg/mL, respectively.ρ-Cymene and isoascaridole also possessed nematicidal activity againstM. incognitawith LC50values of 435.89 μg/mL and 1323.51 μg/mL, respectively but weaker than the crude essential oil.

scholarly journals Glucosinolate content and nematicidal activity of Brazilian wild mustard tissues against Meloidogyne incognita in tomato

2010 ◽  
Vol 341 (1-2) ◽  
pp. 155-164 ◽  
Author(s):  
Rosângela D. L. Oliveira ◽  
Onkar D. Dhingra ◽  
André O. Lima ◽  
Gulab N. Jham ◽  
Mark A. Berhow ◽  
...  
Keyword(s):  
Meloidogyne Incognita ◽  
Nematicidal Activity ◽  
Glucosinolate Content ◽  
Wild Mustard

Nematicidal activity of volatile organic compounds emitted by Brassica juncea, Azadirachta indica, Canavalia ensiformis, Mucuna pruriens and Cajanus cajan against Meloidogyne incognita

2014 ◽  
Vol 80 ◽  
pp. 34-43 ◽  
Author(s):  
Aline Ferreira Barros ◽  
Vicente Paulo Campos ◽  
Júlio Carlos Pereira da Silva ◽  
Márcio Pozzobon Pedroso ◽  
Flávio Henrique Vasconcelos Medeiros ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Brassica Juncea ◽  
Azadirachta Indica ◽  
Meloidogyne Incognita ◽  
Cajanus Cajan ◽  
Nematicidal Activity ◽  
Mucuna Pruriens ◽  
Canavalia Ensiformis ◽  
Volatile Organic

Biocontrol potential of Lysobacter antibioticus HS124 against the root-knot nematode, Meloidogyne incognita, causing disease in tomato

Nematology ◽  
2013 ◽  
Vol 15 (5) ◽  
pp. 545-555 ◽  
Author(s):  
Yong Seong Lee ◽  
Muhammad Anees ◽  
Hae Nam Hyun ◽  
Kil Yong Kim
Keyword(s):  
Meloidogyne Incognita ◽  
Bacterial Strain ◽  
Tap Water ◽  
Nematicidal Activity ◽  
Root Knot Nematode ◽  
Lytic Enzymes ◽  
Pot Experiments ◽  
Hydroxyphenylacetic Acid

Lysobacter antibioticus HS124 is an antagonistic bacterial strain that was previously isolated from the rhizosphere soil of pepper and showed an enhanced ability to produce lytic enzymes as well as an antibiotic that was identified as 4-hydroxyphenylacetic acid (4-HPAA). In the present study, nematicidal activity of the strain and 4-HPAA against the root-knot nematode, Meloidogyne incognita, causing disease in tomato was investigated in both in vitro and in vivo conditions. For this purpose, adding different concentrations of culture filtrate, crude extract collected from extraction with ethyl acetate and 4-HPAA, in 24-well plates containing ca 500 eggs or 300 second-stage juveniles (J2), significantly decreased the rate of nematode hatch and caused higher mortality of J2 compared with the control treatments. Nematicidal activity of the bacterial strain was further confirmed by conducting pot experiments in which tomato plants were inoculated with M. incognita and the HS124 culture (BC). The control pots were treated with commercial nematicide (CN, 5% Ethoprophos), tap water (TW) or the non-inoculated bacterial culture medium (BCM). In these pot experiments, results demonstrated a strong antagonistic potential of L. antibioticus HS124 against M. incognita where the disease was significantly reduced in the pots treated with BC as compared to TW or BCM. Furthermore, the shoot fresh weight was also increased significantly, which may be attributed to the disease control ability of the strain. Hence, L. antibioticus HS124 may be further developed as a potential biocontrol of root knot nematode in the field.

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