Nematicidal Activity of Eclipta prostrata Extract and Terthiophene against Pine Wood Nematode, Bursaphelenchus xylophilus

Shin, Jin Hee; Kwon, Oh-Gyeong; Lee, Chae Min; Lee, Sang Myeong; Choi, Young Hwa; Kim, Jin Ho; Kim, Young Sub; Lee, Dong Woon

doi:10.7585/kjps.2016.20.1.56

Cited by 11 publications

(7 citation statements)

References 17 publications

(11 reference statements)

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“…However, there is no sufficient information on the characteristics of litter decomposition between pine species that have relatively poor nutrient content; there are limited studies on the four dominant pine species in Korea with regard to litter decomposition. Most studies on pine forests have focused on the structure and dynamics of plant communities [33][34][35] or the control of diseases and insect pests [36,37]. Although a few studies on litter decomposition have been conducted in pine forests, there is limited information on the effects of physicochemical litter quality on decomposition of different pine litter species, because these studies contain only a simple description of changes in nutrient elements in decaying litter [38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Effect of Litter Quality on Needle Decomposition for Four Pine Species in Korea

Chae

Choi

Lee

et al. 2019

Forests

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Litter decomposition involves multiple complex processes, including interactions between the physicochemical characteristics of litter species and various environmental factors. We selected four representative pine species in South Korea (Pinus densiflora Siebold & Zucc., Pinus thunbergii Parl., Pinus koraiensis Siebold & Zucc., and Pinus rigida Miller) to investigate the decay rate and effects of the physicochemical properties on decomposition. Needle litters were incubated in microcosms at 23 °C for 280 days and retrieved four times in about 70-day intervals. The mass loss showed significant differences among the species and was higher in the order of P. densiflora (30.5%), P. koraiensis (27.8%), P. rigida (26.5%), and P. thunbergii (23.6%). The needle litter decomposition showed a negative relationship with the initial surface area, volume, density, cellulose content, and lignin/nitrogen of the litter, and a positive relationship with the initial specific leaf area (SLA), surface-area-to-volume ratio (SA/V), and water- and ethanol-soluble substances. The decomposition rate was highly affected by the physical properties of litter when compared with the initial chemical litter quality, and it was strongly influenced by SLA and SA/V. Accordingly, the physical properties of pine needle litter, especially SLA and SA/V, may be the key factors, and they could be used as predictive indices for the decomposition rate of pine tree litters.

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Section: Introductionmentioning

confidence: 99%

Effect of Litter Quality on Needle Decomposition for Four Pine Species in Korea

Chae

Choi

Lee

et al. 2019

Forests

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“…In addition, Beauveria bassiana , toxin-producing fungi, pine wood nematode-killing fungi, and Actinomycetes provide for microbiological control, and Aspergillus vitis and Serratia marcescens can be used against Monochamus alternatus to achieve environmentally friendly biological control ( Otoguro et al., 1988 ). However, low-cost and environmentally friendly alternative control agents are still needed, and the development of bionematicides derived from actinomycetes has profound significance for forest protection ( Shin et al., 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Screening, isolation and mechanism of a nematicidal extract from actinomycetes against the pine wood nematode Bursaphelenchus xylophilus

Jia

Zhang

et al. 2022

Heliyon

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“…In this light, there is an increasing need for low‐cost and environmentally friendly alternative control agents. Research on active substances derived from actinomycetes that can be developed as biological nematicides has been conducted 23 …”

Section: Introductionmentioning

confidence: 99%

“…Research on active substances derived from actinomycetes that can be developed as biological nematicides has been conducted. 23 In this study, we screened for a strain of actinomycetes having nematicidal activity isolated from pine tree endophytes from various natural environments. A single substance was isolated, its structure identified, and activity against B. xylophilus determined.…”

Section: Introductionmentioning

confidence: 99%

Nematicidal activity of teleocidin B4 isolated from Streptomyces sp. against pine wood nematode, Bursaphelenchus xylophilus

Kang

Kim

Liu

et al. 2021

Pest Management Science

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BACKGROUND Pine wilt disease (PWD) is a plant disease that causes serious damage to pine trees. PWD occurs when the host plant is infected with pinewood nematode (PWN), Bursaphelenchus xylophilus. In this study, a compound with nematicidal activity was isolated from actinomycetes and its efficacy was investigated in vitro. RESULT We screened and selected Streptomyces sp. 680560, which had nematicidal activity against B. xylophilus. Based on 16S rRNA sequence analysis, it showed 99.93% similarity with Streptomyces blastmyceticus NRRB‐5480T. Furthermore, the active compound was isolated and identified as teleocidin B4. Teleocidin B4 at concentrations ranging from 6.25 to 100 μM had low nematicidal activity after 24 and 36 h against adult and stage juveniles (J2) of B. xylophilus, but after 48 h nematicidal activity exceeded 95%. The rate of inhibition of egg hatching for Teleocidin B4 6.25, 12.5, 25, 50, and 100 μM was confirmed to be dose‐dependently inhibited after 48 h of treatment. Teleocidin B4 is not only toxic to hatched B. xylophilus, but also affects egg hatching. CONCLUSION This study was carried out to isolate actinomycete metabolites from pine tree endophytes from various natural environments for control of PWD. A compound with nematicidal activity was isolated from a selected strain and its structure was identified as teleocidin B4. The nematicidal effect of the isolated active substance, teleocidin B4, was confirmed. This is the first report of the effect of teleocidin B4 on B. xylophilus, suggesting its possibility as a PWD control agent. © 2020 Society of Chemical Industry

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Nematicidal Activity of Eclipta prostrata Extract and Terthiophene against Pine Wood Nematode, Bursaphelenchus xylophilus

Cited by 11 publications

References 17 publications

Effect of Litter Quality on Needle Decomposition for Four Pine Species in Korea

Effect of Litter Quality on Needle Decomposition for Four Pine Species in Korea

Screening, isolation and mechanism of a nematicidal extract from actinomycetes against the pine wood nematode Bursaphelenchus xylophilus

Nematicidal activity of teleocidin B4 isolated from Streptomyces sp. against pine wood nematode, Bursaphelenchus xylophilus

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