Altitude-related changes in the phytochemical profile of essential oils extracted from Artemisia nilagirica and their nematicidal activity against Meloidogyne incognita

2019 ◽  
Vol 139 ◽  
pp. 111472 ◽  
Author(s):  
D. Kalaiselvi ◽  
A. Mohankumar ◽  
G. Shanmugam ◽  
G. Thiruppathi ◽  
S. Nivitha ◽  
...  
2006 ◽  
Vol 1 (6) ◽  
pp. 1934578X0600100
Author(s):  
Nirla R. Romero ◽  
Manoel Andrade-Neto ◽  
Francisco J. T. Gonçalves ◽  
Raimundo R. G. Nascimento ◽  
Franciglauber S. Bezerra ◽  
...  

The composition and nematicidal activity of the essential oils from the leaves of native and six cultivated varieties of P. microphyllus are reported. Twenty-nine compounds were identified (86.2% sesquiterpenes and 13.8% aliphatic ketones) of which (E)-caryophyllene, germacrene-D, caryophyllene oxide, 2-tridecanone, and 1-hydroxy-2-tridecanone were found in all of the analyzed oils. The nematicidal activity of all the oils was evaluated against the second-stage juvenile nematode Meloidogyne incognita. Essential oils from native P. microphyllus and varieties Xingu and Linha V showed high nematicidal activity, while no activity was found for the other oils. This result was associated with the high concentrations of both 2-tridecanone and 1-hydroxy-2-tridecanone in the active oils. Both ketones were isolated from one of the active oils and showed 100% activity at 1000 ppm concentration.


Biomolecules ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 127
Author(s):  
Milka Mileva ◽  
Yana Ilieva ◽  
Gabriele Jovtchev ◽  
Svetla Gateva ◽  
Maya Margaritova Zaharieva ◽  
...  

Plants from the Rosacea family are rich in natural molecules with beneficial biological properties, and they are widely appreciated and used in the food industry, perfumery, and cosmetics. In this review, we are considering Rosa damascena Mill., Rosa alba L., Rosa centifolia L., and Rosa gallica L. as raw materials important for producing commercial products, analyzing and comparing the main biological activities of their essential oils, hydrolates, and extracts. A literature search was performed to find materials describing (i) botanical characteristics; (ii) the phytochemical profile; and (iii) biological properties of the essential oil sand extracts of these so called “old roses” that are cultivated in Bulgaria, Turkey, India, and the Middle East. The information used is from databases PubMed, Science Direct, and Google Scholar. Roses have beneficial healing properties due to their richness of beneficial components, the secondary metabolites as flavonoids (e.g., flavones, flavonols, anthocyanins), fragrant components (essential oils, e.g., monoterpenes, sesquiterpenes), and hydrolysable and condensed tannins. Rose essential oils and extracts with their therapeutic properties—as respiratory antiseptics, anti-inflammatories, mucolytics, expectorants, decongestants, and antioxidants—are able to act as symptomatic prophylactics and drugs, and in this way alleviate dramatic sufferings during severe diseases.


2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Huijuan Gao ◽  
Gaofu Qi ◽  
Rong Yin ◽  
Hongchun Zhang ◽  
Chenggang Li ◽  
...  

2021 ◽  
Vol 9 (11) ◽  
pp. 2268
Author(s):  
Xiaoyu Mei ◽  
Xin Wang ◽  
Guohong Li

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.


2014 ◽  
Vol 26 (4) ◽  
pp. 292-300 ◽  
Author(s):  
Luiz Fernando Rolim de Almeida ◽  
Roberto de Oliveira Portella ◽  
Roselaine Facanali ◽  
Marcia Ortiz Mayo Marques ◽  
Fernando Frei

2009 ◽  
Vol 45 (No. 2) ◽  
pp. 66-73 ◽  
Author(s):  
M. Zouhar ◽  
O. Douda ◽  
D. Lhotský ◽  
R. Pavela

The aim of this study was to assess the nematicidal activity of different essential oils from medicinal and aromatic plants for use in nematode management. Essential oils of <I>Eugenia caryophyllata, Origanum compactum, Origanum vulgare, Thymus matschiana</I> and <I>Thymus vulgaris</I> showed nematicidal activity against <I>Ditylenchus dipsaci.</I>


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

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