Insecticidal Activities of <i>Sophora flavescens</i> Alt. towards Red Imported Fire Ants (<i>Solenopsis invicta</i> Buren)
The red imported fire ant (<i>Solenopsis invicta</i>) is a worldwide invasive and dangerous insect that is controlled mainly by chemical insecticides. Plant-derived insecticidal compounds are generally better than synthetic insecticides for environmental compatibility and the biosafety o...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-01-01
|
| Series: | Toxins |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-6651/15/2/105 |
| _version_ | 1797617964582699008 |
|---|---|
| author | Yongqing Tian Zhixiang Zhang |
| author_facet | Yongqing Tian Zhixiang Zhang |
| author_sort | Yongqing Tian |
| collection | DOAJ |
| description | The red imported fire ant (<i>Solenopsis invicta</i>) is a worldwide invasive and dangerous insect that is controlled mainly by chemical insecticides. Plant-derived insecticidal compounds are generally better than synthetic insecticides for environmental compatibility and the biosafety of non-targets. The toxicity of the ethanol extract of <i>Sophora flavescens</i> roots against <i>S. invicta</i> was evaluated under laboratory conditions. The ethanol extract showed toxicity against minor and medium workers of <i>S. invicta</i> with 7-day LC<sub>50</sub> values of 1426.25 and 2292.60 mg/L, respectively. By bioactivity-directed chromatographic separations using the minor worker as the test insect, two active compounds, matrine and sophocarpine, were isolated from the <i>S. flavescens</i> total alkaloids; their chemical structure was identified by <sup>13</sup>C NMR data. Matrine showed toxicities against minor and medium workers with 7-day LC<sub>50</sub> values of 46.77 and 71.49 mg/L, respectively, and for sophocarpine, 50.08 and 85.87 mg/L, respectively. The two compounds could substantially reduce the foraging response, food consumption, and aggregation of <i>S. invicta</i> workers at a sublethal concentration of 15 mg/L. The present research suggests that <i>S. flavescens</i> roots have potential as a natural control agent for red imported fire ants. |
| first_indexed | 2024-03-11T08:02:28Z |
| format | Article |
| id | doaj.art-05eff9ededae41dba9eadb389b1cf947 |
| institution | Directory Open Access Journal |
| issn | 2072-6651 |
| language | English |
| last_indexed | 2024-03-11T08:02:28Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Toxins |
| spelling | doaj.art-05eff9ededae41dba9eadb389b1cf9472023-11-16T23:38:37ZengMDPI AGToxins2072-66512023-01-0115210510.3390/toxins15020105Insecticidal Activities of <i>Sophora flavescens</i> Alt. towards Red Imported Fire Ants (<i>Solenopsis invicta</i> Buren)Yongqing Tian0Zhixiang Zhang1Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, ChinaKey Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, ChinaThe red imported fire ant (<i>Solenopsis invicta</i>) is a worldwide invasive and dangerous insect that is controlled mainly by chemical insecticides. Plant-derived insecticidal compounds are generally better than synthetic insecticides for environmental compatibility and the biosafety of non-targets. The toxicity of the ethanol extract of <i>Sophora flavescens</i> roots against <i>S. invicta</i> was evaluated under laboratory conditions. The ethanol extract showed toxicity against minor and medium workers of <i>S. invicta</i> with 7-day LC<sub>50</sub> values of 1426.25 and 2292.60 mg/L, respectively. By bioactivity-directed chromatographic separations using the minor worker as the test insect, two active compounds, matrine and sophocarpine, were isolated from the <i>S. flavescens</i> total alkaloids; their chemical structure was identified by <sup>13</sup>C NMR data. Matrine showed toxicities against minor and medium workers with 7-day LC<sub>50</sub> values of 46.77 and 71.49 mg/L, respectively, and for sophocarpine, 50.08 and 85.87 mg/L, respectively. The two compounds could substantially reduce the foraging response, food consumption, and aggregation of <i>S. invicta</i> workers at a sublethal concentration of 15 mg/L. The present research suggests that <i>S. flavescens</i> roots have potential as a natural control agent for red imported fire ants.https://www.mdpi.com/2072-6651/15/2/105<i>Sophora flavescens</i><i>Solenopsis invicta</i>matrinesophocarpine |
| spellingShingle | Yongqing Tian Zhixiang Zhang Insecticidal Activities of <i>Sophora flavescens</i> Alt. towards Red Imported Fire Ants (<i>Solenopsis invicta</i> Buren) Toxins <i>Sophora flavescens</i> <i>Solenopsis invicta</i> matrine sophocarpine |
| title | Insecticidal Activities of <i>Sophora flavescens</i> Alt. towards Red Imported Fire Ants (<i>Solenopsis invicta</i> Buren) |
| title_full | Insecticidal Activities of <i>Sophora flavescens</i> Alt. towards Red Imported Fire Ants (<i>Solenopsis invicta</i> Buren) |
| title_fullStr | Insecticidal Activities of <i>Sophora flavescens</i> Alt. towards Red Imported Fire Ants (<i>Solenopsis invicta</i> Buren) |
| title_full_unstemmed | Insecticidal Activities of <i>Sophora flavescens</i> Alt. towards Red Imported Fire Ants (<i>Solenopsis invicta</i> Buren) |
| title_short | Insecticidal Activities of <i>Sophora flavescens</i> Alt. towards Red Imported Fire Ants (<i>Solenopsis invicta</i> Buren) |
| title_sort | insecticidal activities of i sophora flavescens i alt towards red imported fire ants i solenopsis invicta i buren |
| topic | <i>Sophora flavescens</i> <i>Solenopsis invicta</i> matrine sophocarpine |
| url | https://www.mdpi.com/2072-6651/15/2/105 |
| work_keys_str_mv | AT yongqingtian insecticidalactivitiesofisophoraflavescensialttowardsredimportedfireantsisolenopsisinvictaiburen AT zhixiangzhang insecticidalactivitiesofisophoraflavescensialttowardsredimportedfireantsisolenopsisinvictaiburen |