1
|
Li T, Zhang J, Ma S, Gao L, Chen C, Ji Z, Hu Z, Shi B, Wu W. Identification and mechanism of insecticidal periplocosides from the root bark of Periploca sepium Bunge. PEST MANAGEMENT SCIENCE 2021; 77:1925-1935. [PMID: 33300234 DOI: 10.1002/ps.6220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 10/12/2020] [Accepted: 12/09/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND The Periploca sepium bark root (PSBR) has been regarded as a potential botanical insecticide because of its significant insecticidal activity of secondary metabolites. Several periplocosides were isolated from it as promising pesticides to control crop pests in agriculture. RESULTS In our research, two new periplocosides, along with four known periplocosides were isolated from PSBR. The names of new periplocosides were periplocoside T (PST) and periplocoside U (PSU) while another four periplocosides were known as follows: periplocoside A (PSA), periplocoside F (PSF), periplocoside E (PSE) and periplocoside D (PSD). All periplocosides were evalulated for insecticidal activity against 3rd Mythimna separata (Walker) and Plutella xylostella. The biometric data showed that periplocoside T, PSD and PSF had remarkable insecticidal activity against tested insects. Its values of LD50 were 1.31, 3.94 and 3.42 μg·lavare-1 against 3rd M. separata respectively, while the activity of those compounds against 3rd P. xylostella were 5.45, 12.17 and 13.95 μg·lavare-1 , respectively. It was apparent after further study of the mechanism of action against M. separata was conducted that PST possessed the most significant insecticidal activity. The results of enzymatic activity displayed that powerful activation of tryptase, especially weak alkaline tryptase might be a dominant factor causing death of M. separata in vivo. CONCLUSION We herein report isolation and the mechanisms of action of insecticidal periplocosides, which established the fundamental development of natural agents to prevent pest damage to crops. © 2020 Society of Chemical Industry.
Collapse
Affiliation(s)
- Tian Li
- College of Plant Protection, Northwest A&F University, Yangling, China
- College of Chemistry and Pharmacy, Northwest A&F University, Yangling, China
| | - Jiwen Zhang
- College of Chemistry and Pharmacy, Northwest A&F University, Yangling, China
- Shaanxi Province Key Laboratory Research & Development on Botanical Pesticide, Northwest A & F University, Yangling, China
| | - Shichuang Ma
- College of Plant Protection, Northwest A&F University, Yangling, China
| | - Lvtong Gao
- College of Plant Protection, Northwest A&F University, Yangling, China
- Shaanxi Province Key Laboratory Research & Development on Botanical Pesticide, Northwest A & F University, Yangling, China
| | - Cuicui Chen
- College of Plant Protection, Northwest A&F University, Yangling, China
- Shaanxi Province Key Laboratory Research & Development on Botanical Pesticide, Northwest A & F University, Yangling, China
| | - Zhiqin Ji
- College of Plant Protection, Northwest A&F University, Yangling, China
- Shaanxi Province Key Laboratory Research & Development on Botanical Pesticide, Northwest A & F University, Yangling, China
| | - Zhaonong Hu
- College of Plant Protection, Northwest A&F University, Yangling, China
- Shaanxi Province Key Laboratory Research & Development on Botanical Pesticide, Northwest A & F University, Yangling, China
| | - Baojun Shi
- College of Plant Protection, Northwest A&F University, Yangling, China
- Shaanxi Province Key Laboratory Research & Development on Botanical Pesticide, Northwest A & F University, Yangling, China
| | - Wenjun Wu
- College of Plant Protection, Northwest A&F University, Yangling, China
- Shaanxi Province Key Laboratory Research & Development on Botanical Pesticide, Northwest A & F University, Yangling, China
| |
Collapse
|
3
|
Fuxa JR, Richter AR, Ameen AO, Hammock BD. Vertical transmission of TnSNPV, TnCPV, AcMNPV, and possibly recombinant NPV in Trichoplusia ni. J Invertebr Pathol 2002; 79:44-50. [PMID: 12054786 DOI: 10.1016/s0022-2011(02)00003-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Four viruses were tested for vertical transmission in Trichoplusia ni: T. ni nucleopolyhedrovirus (TnSNPV), T. ni cypovirus (TnCPV), Autographa californica nucleopolyhedrovirus (AcMNPV), and AcMNPV engineered to express a scorpion toxin (AcMNPV.AaIT). Fifth instars were exposed to each virus, the survivors were reared and mated, and second-generation (F(1)) insects were examined for infection. TnSNPV was transmitted to offspring at a prevalence rate of 15.4%, TnCPV at 10.2%, and AcMNPV at 10.1%. Only one of 2484 F(1) insects was infected with AcMNPV.AaIT; this experiment was repeated, and none of 4774 insects was infected. Thus, vertical transmission is unlikely to contribute to AcMNPV.AaIT contacting non-target organisms after its field release. There was evidence that TnCPV and possibly TnSNPV were activated to overt infections by ingestion of a different virus. TnCPV, but not the NPVs, routinely infected 0.3-1.7% of non-treated insects, probably indicating that it is vertically transmitted at enzootic levels.
Collapse
Affiliation(s)
- J R Fuxa
- Department of Entomology, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, 402 Life Sciences Building, Baton Rouge, LA 70803, USA.
| | | | | | | |
Collapse
|
4
|
Abstract
A review of the literature on transmission studies of nucleopolyhedroviruses showed that low levels of viral infection were common among studies of pupae of insects but rarer in adults. Virus could be transmitted from parent to progeny and could be found in caterpillars reared from surface-decontaminated eggs. Persistent low levels of infection were observed in many of the studies considered. These could contribute to the persistence of virus in low-density populations, but the dominant source of virus among generations is probably through environmental contamination.
Collapse
Affiliation(s)
- B Kukan
- Department of Plant Science, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| |
Collapse
|
5
|
Richards A, Matthews M, Christian P. Ecological considerations for the environmental impact evaluation of recombinant baculovirus insecticides. ANNUAL REVIEW OF ENTOMOLOGY 1998; 43:493-517. [PMID: 15012397 DOI: 10.1146/annurev.ento.43.1.493] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The history of baculoviruses in insect control and the current status of recombinant baculovirus (recBV) insecticides in the laboratory and the field are briefly outlined. A conceptual model for impact evaluation is described that distinguishes between scientific impact evaluation and regulatory risk assessment. Its components are identified and reviewed in the light of existing ecological theory and experimental study under the categories of impact identification, exposure identification, and impact evaluation. Impact identification aims to identify species and populations sensitive to direct or indirect impacts by a recBV. Exposure identification examines how susceptible populations may be exposed to a recBV. Impact evaluation combines these data to predict the potential for recBV impacts in the environment.
Collapse
Affiliation(s)
- A Richards
- CSIRO Entomology, PO Box 1700, Canberra, ACT 2601, Australia.
| | | | | |
Collapse
|
6
|
Hatfield P, Entwistle P. Biological and biochemical comparison of nuclear polyhedrosis virus isolates pathogenic for the oriental armyworm, Mythimna separata (Lepidoptera: Noctuidae). J Invertebr Pathol 1988. [DOI: 10.1016/0022-2011(88)90117-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
7
|
Natural occurrence of the nucleopolyhedrosis virus of the gypsy moth,Lymantria dispar [Lep.: Lymantriidae] in wild birds and mammals. ACTA ACUST UNITED AC 1980. [DOI: 10.1007/bf02371925] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|