Efficacy of Precocene I from <i>Desmosstachya bipinnata</i> as an Effective Bioactive Molecules against the <i>Spodoptera litura</i> Fab. and Its Impact on <i>Eisenia fetida</i> Savigny
The sustainability of agroecosystems are maintained with agro-chemicals. However, after more than 80 years of intensive use, many pests and pathogens have developed resistance to the currently used chemistries. Thus, we explored the isolation and bioactivity of a chemical compound, Precocene I, isol...
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oai:doaj.org-article:ed026714be364718a7f3dd70d15c6db62021-11-11T18:24:43ZEfficacy of Precocene I from <i>Desmosstachya bipinnata</i> as an Effective Bioactive Molecules against the <i>Spodoptera litura</i> Fab. and Its Impact on <i>Eisenia fetida</i> Savigny10.3390/molecules262163841420-3049https://doaj.org/article/ed026714be364718a7f3dd70d15c6db62021-10-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6384https://doaj.org/toc/1420-3049The sustainability of agroecosystems are maintained with agro-chemicals. However, after more than 80 years of intensive use, many pests and pathogens have developed resistance to the currently used chemistries. Thus, we explored the isolation and bioactivity of a chemical compound, Precocene I, isolated from the perennial grass, <i>Desmosstachya bipinnata</i> (L.) Stapf. Fractions produced from chloroform extractions showed suppressive activity on larvae of <i>Spodoptera litura</i> (Lepidoptera: Noctuidae), the Oriental armyworm. Column chromatography analyses identified Precocene I confirmed using FTIR, HPLC and NMR techniques. The bioactivity of the plant-extracted Dp-Precocene I was compared to a commercially produced Precocene I standard. The percentage of mortality observed in insects fed on plant tissue treated with 60 ppm Db-Precocene I was 97, 87 and 81, respectively, for the second, third and fourth instar larvae. The LC<sub>50</sub> value of third instars was 23.2 ppm. The percentages of survival, pupation, fecundity and egg hatch were altered at sub-lethal concentrations of Db-Precocene I (2, 4, 6 and 8 ppm, sprays on castor leaves). The observed effects were negatively correlated with concentration, with a decrease in effects as concentrations increased. Distinct changes in feeding activity and damage to gut tissues were observed upon histological examination of <i>S. litura</i> larvae after the ingestion of Db-Precocene I treatments. Comparative analyses of mortality on a non-target organism, the earthworm, <i>Eisenia fetida</i>, at equal concentrations of Precocene I and two chemical pesticides (cypermethrin and monocrotophos) produced mortality only with the chemical pesticide treatments. These results of Db-Precocene I as a highly active bioactive compound support further research to develop production from the grass <i>D. bipinnata</i> as an affordable resource for Precocene-I-based insecticides.Narayanan Shyam SundarSengodan KarthiHaridoss SivaneshVethamonickam Stanley-RajaKanagaraj Muthu-Pandian ChanthiniRamakrishnan RamasubramanianGovindaraju RamkumarAthirstam PonsankarKilapavoor Raman NarayananPrabhakaran Vasantha-SrinivasanJawaher AlkahtaniMona S. AlwahibiWayne Brian HunterSengottayan Senthil-NathanKrutmuang PatcharinAhmed Abdel-MegeedRady ShawerAml GhaithMDPI AGarticlearmywormbotanicals insecticidesphytochemicaltoxicityNoctuidaehistologyOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6384, p 6384 (2021) |
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armyworm botanicals insecticides phytochemical toxicity Noctuidae histology Organic chemistry QD241-441 |
spellingShingle |
armyworm botanicals insecticides phytochemical toxicity Noctuidae histology Organic chemistry QD241-441 Narayanan Shyam Sundar Sengodan Karthi Haridoss Sivanesh Vethamonickam Stanley-Raja Kanagaraj Muthu-Pandian Chanthini Ramakrishnan Ramasubramanian Govindaraju Ramkumar Athirstam Ponsankar Kilapavoor Raman Narayanan Prabhakaran Vasantha-Srinivasan Jawaher Alkahtani Mona S. Alwahibi Wayne Brian Hunter Sengottayan Senthil-Nathan Krutmuang Patcharin Ahmed Abdel-Megeed Rady Shawer Aml Ghaith Efficacy of Precocene I from <i>Desmosstachya bipinnata</i> as an Effective Bioactive Molecules against the <i>Spodoptera litura</i> Fab. and Its Impact on <i>Eisenia fetida</i> Savigny |
description |
The sustainability of agroecosystems are maintained with agro-chemicals. However, after more than 80 years of intensive use, many pests and pathogens have developed resistance to the currently used chemistries. Thus, we explored the isolation and bioactivity of a chemical compound, Precocene I, isolated from the perennial grass, <i>Desmosstachya bipinnata</i> (L.) Stapf. Fractions produced from chloroform extractions showed suppressive activity on larvae of <i>Spodoptera litura</i> (Lepidoptera: Noctuidae), the Oriental armyworm. Column chromatography analyses identified Precocene I confirmed using FTIR, HPLC and NMR techniques. The bioactivity of the plant-extracted Dp-Precocene I was compared to a commercially produced Precocene I standard. The percentage of mortality observed in insects fed on plant tissue treated with 60 ppm Db-Precocene I was 97, 87 and 81, respectively, for the second, third and fourth instar larvae. The LC<sub>50</sub> value of third instars was 23.2 ppm. The percentages of survival, pupation, fecundity and egg hatch were altered at sub-lethal concentrations of Db-Precocene I (2, 4, 6 and 8 ppm, sprays on castor leaves). The observed effects were negatively correlated with concentration, with a decrease in effects as concentrations increased. Distinct changes in feeding activity and damage to gut tissues were observed upon histological examination of <i>S. litura</i> larvae after the ingestion of Db-Precocene I treatments. Comparative analyses of mortality on a non-target organism, the earthworm, <i>Eisenia fetida</i>, at equal concentrations of Precocene I and two chemical pesticides (cypermethrin and monocrotophos) produced mortality only with the chemical pesticide treatments. These results of Db-Precocene I as a highly active bioactive compound support further research to develop production from the grass <i>D. bipinnata</i> as an affordable resource for Precocene-I-based insecticides. |
format |
article |
author |
Narayanan Shyam Sundar Sengodan Karthi Haridoss Sivanesh Vethamonickam Stanley-Raja Kanagaraj Muthu-Pandian Chanthini Ramakrishnan Ramasubramanian Govindaraju Ramkumar Athirstam Ponsankar Kilapavoor Raman Narayanan Prabhakaran Vasantha-Srinivasan Jawaher Alkahtani Mona S. Alwahibi Wayne Brian Hunter Sengottayan Senthil-Nathan Krutmuang Patcharin Ahmed Abdel-Megeed Rady Shawer Aml Ghaith |
author_facet |
Narayanan Shyam Sundar Sengodan Karthi Haridoss Sivanesh Vethamonickam Stanley-Raja Kanagaraj Muthu-Pandian Chanthini Ramakrishnan Ramasubramanian Govindaraju Ramkumar Athirstam Ponsankar Kilapavoor Raman Narayanan Prabhakaran Vasantha-Srinivasan Jawaher Alkahtani Mona S. Alwahibi Wayne Brian Hunter Sengottayan Senthil-Nathan Krutmuang Patcharin Ahmed Abdel-Megeed Rady Shawer Aml Ghaith |
author_sort |
Narayanan Shyam Sundar |
title |
Efficacy of Precocene I from <i>Desmosstachya bipinnata</i> as an Effective Bioactive Molecules against the <i>Spodoptera litura</i> Fab. and Its Impact on <i>Eisenia fetida</i> Savigny |
title_short |
Efficacy of Precocene I from <i>Desmosstachya bipinnata</i> as an Effective Bioactive Molecules against the <i>Spodoptera litura</i> Fab. and Its Impact on <i>Eisenia fetida</i> Savigny |
title_full |
Efficacy of Precocene I from <i>Desmosstachya bipinnata</i> as an Effective Bioactive Molecules against the <i>Spodoptera litura</i> Fab. and Its Impact on <i>Eisenia fetida</i> Savigny |
title_fullStr |
Efficacy of Precocene I from <i>Desmosstachya bipinnata</i> as an Effective Bioactive Molecules against the <i>Spodoptera litura</i> Fab. and Its Impact on <i>Eisenia fetida</i> Savigny |
title_full_unstemmed |
Efficacy of Precocene I from <i>Desmosstachya bipinnata</i> as an Effective Bioactive Molecules against the <i>Spodoptera litura</i> Fab. and Its Impact on <i>Eisenia fetida</i> Savigny |
title_sort |
efficacy of precocene i from <i>desmosstachya bipinnata</i> as an effective bioactive molecules against the <i>spodoptera litura</i> fab. and its impact on <i>eisenia fetida</i> savigny |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doaj.org/article/ed026714be364718a7f3dd70d15c6db6 |
work_keys_str_mv |
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