scholarly journals The nematicidal activity of acetylene compounds.

1982 ◽  
Vol 46 (1) ◽  
pp. 309-311 ◽  
Author(s):  
Masaaki MORI ◽  
Suong-Be HYEON ◽  
Yasuo KIMURA ◽  
Akinori SUZUKI
Keyword(s):  
Nematicidal Activity ◽  
Acetylene Compounds

The Nematicidal Activity of Acetylene Compounds

1982 ◽  
Vol 46 (1) ◽  
pp. 309-311 ◽  
Author(s):  
Masaaki Mori ◽  
Suong-Be Hyeon ◽  
Yasuo Kimura ◽  
Akinori Suzuki
Keyword(s):  
Nematicidal Activity ◽  
Acetylene Compounds

Nematicidal Activities of Acetylene Compounds from Coreopsis lanceolata L.

2008 ◽  
Vol 63 (11-12) ◽  
pp. 843-847 ◽  
Author(s):  
Yasuo Kimura ◽  
Kensuke Hiraoka ◽  
Tsuyoshi Kawano ◽  
Shozo Fujioka ◽  
Atsumi Shimada
Keyword(s):  
Caenorhabditis Elegans ◽  
Bursaphelenchus Xylophilus ◽  
Nematicidal Activity ◽  
Spectroscopic Methods ◽  
Pratylenchus Penetrans ◽  
Acetylene Compounds

Abstract 1-Phenylhepta-1,3,5-triyne (1), 5-phenyl-2-(1′-propynyl)-thiophene (2), and 2-(3′-acetoxy- 1′-propynyl)-5-phenylthiophene (3) were isolated from Coreopsis lanceolata L., and their structures identified by spectroscopic methods. Compounds 1 and 2 showed effective nematicidal activities against Bursaphelenchus xylophilus and Caenorhabditis elegans, but had hardly any effect against Pratylenchus penetrans. Compound 3 did not show any effective nematicidal activity.

Enhanced accumulation of pinosylvin stilbenes and related gene expression in Pinus strobus after infection of pine wood nematode

2021 ◽  
Author(s):  
Hwan-Su Hwang ◽  
Jung Yeon Han ◽  
Yong Eui Choi
Keyword(s):  
Transcription Factors ◽  
Defense Mechanisms ◽  
De Novo ◽  
Pinus Strobus ◽  
Pine Wilt Disease ◽  
Monomethyl Ether ◽  
Bursaphelenchus Xylophilus ◽  
Nematicidal Activity ◽  
Dependent Manner ◽  
Pine Wood

Abstract Pine wood nematodes (PWNs: Bursaphelenchus xylophilus) infect pine trees and cause serious pine wilt disease. Eastern white pine (Pinus strobus) has resistance to PWN. However, the detailed defense mechanisms of P. strobus against PWN are not well known. When P. strobus plants were infected with PWNs, the accumulation of stilbenoids, dihydropinosylvin monomethyl ether (DPME) and pinosylvin monomethyl ether (PME), were increased remarkably. DPME and PME had the high nematicidal activity. Interestingly, the nematicidal activity of the two compounds was resulted in a developmental stage-dependent manner. PME was more toxic to adult PWNs than juveniles, whereas DPME was found more toxic to juvenile PWNs than the adults. The genes involved in PME and DPME biosynthesis such as phenylalanine ammonia-lyase (PAL), 4-coumarate-CoA ligase (4CL), pinosylvin synthase (STS), and pinosylvin O-methyltransferase (PMT) were isolated using de novo sequencing of the transcriptome in P. strobus. In addition, transcription factors (bHLH, MYB and WRKY) related to stilbene biosynthesis were isolated. qPCR analyses of the selected genes (PAL, 4CL, STS, and PMT) including transcription factors (bHLH, MYB and WRKY) revealed that the expression level of the selected genes highly enhanced after PWN infection. Our results suggest that pinosylvin-type stilbenoid biosynthesis is highly responsive to PWN infection and plays an important role in PWN resistance of P. strobus trees.

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

Comparison of homology models and crystal structures of cuticle‐degrading proteases from nematophagous fungi: structural basis of nematicidal activity

2011 ◽  
Vol 25 (6) ◽  
pp. 1894-1902 ◽  
Author(s):  
Lianming Liang ◽  
Shuqun Liu ◽  
Jinkui Yang ◽  
Zhaohui Meng ◽  
Liping Lei ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Nematophagous Fungi ◽  
Nematicidal Activity ◽  
Structural Basis ◽  
Homology Models
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