Chemical composition of the headspace volatiles of intact cowpea pods and cowpea pods infested by Riptortus dentipes and Nezara viridula pests
Volatile organic compounds are released by plants in defense against herbivory feeding by insect pests. Pod-sucking bugs can cause 30–70 % yield losses in cowpea (Vigna unguiculata) which serves as a major source of rich proteins and vitamins for humans and animals, as well as a source of income for...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-03-01
|
| Series: | Scientific African |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468227623004659 |
| _version_ | 1797277269285142528 |
|---|---|
| author | Akwasi Acheampong Owusu Bempah Jonathan Osei-Owusu Samuel Osafo-Acquaah |
| author_facet | Akwasi Acheampong Owusu Bempah Jonathan Osei-Owusu Samuel Osafo-Acquaah |
| author_sort | Akwasi Acheampong |
| collection | DOAJ |
| description | Volatile organic compounds are released by plants in defense against herbivory feeding by insect pests. Pod-sucking bugs can cause 30–70 % yield losses in cowpea (Vigna unguiculata) which serves as a major source of rich proteins and vitamins for humans and animals, as well as a source of income for farmers. The purpose of this study was to determine the chemical composition of the headspace volatiles of intact cowpea pods (Vigna unguiculata) variety (Padituya), and when it is infested by two pod-sucking bugs Riptortus dentipes and Nezara viridula. Headspace volatile collection was employed to collect volatile organic compounds from the intact cowpea pods, cowpea pods infested with Riptortus dentipes, and cowpea pods infested with Nezara viridula. Entrainment was done for 96 h in each case. The entrained volatiles were analyzed by gas chromatograph coupled with a mass spectrometer (GC-MS). Analysis of GC-MS data led to the identification of 1-octen-3-ol, 3-octanol, 2-nonanone, oleic acid, octadecanoic acid and dodecanoic acid as the volatiles released by the cowpea pod without insect attack. Cowpea pods attacked by Riptortus dentipes released hexanoic acid, 3-hexenoic acid (E), hexanoic acid, 2-hexenyl hexanoate (E), 2-tridecanone, 1-(4-ethylphenyl)-ethanone and eicosanoic acid. Upon infestation with Nezara viridula, the pods released 2-pentanone, 4-hydroxy-4-methyl-, 3-ethylbenzaldehyde, 1-(4-ethylphenyl)-ethanone and 2-decenyl acetate (E). With the exception of 1-(4-ethylphenyl)-ethanone, different volatile organic compounds were released by the cowpea plant against the two pests upon infestation. These compounds could be synthesized and used in integrated pest management of these pests to reduce losses in yield of cowpea production. |
| first_indexed | 2024-03-07T15:46:13Z |
| format | Article |
| id | doaj.art-241eeaaafa4f4d04b202f08bdd78f51d |
| institution | Directory Open Access Journal |
| issn | 2468-2276 |
| language | English |
| last_indexed | 2024-03-07T15:46:13Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Scientific African |
| spelling | doaj.art-241eeaaafa4f4d04b202f08bdd78f51d2024-03-05T04:30:07ZengElsevierScientific African2468-22762024-03-0123e02011Chemical composition of the headspace volatiles of intact cowpea pods and cowpea pods infested by Riptortus dentipes and Nezara viridula pestsAkwasi Acheampong0Owusu Bempah1Jonathan Osei-Owusu2Samuel Osafo-Acquaah3Department of Chemistry, Faculty of Physical and Computational Sciences, College of Science, Kwame Nkrumah University of Science and Technology, Ghana; Corresponding author.Department of Chemistry, Faculty of Physical and Computational Sciences, College of Science, Kwame Nkrumah University of Science and Technology, GhanaDepartment of Biological, Mathematical, and Physical Sciences, School of Natural and Environmental Sciences, University of Environment and Sustainable Development, Somanya, GhanaDepartment of Chemistry, Faculty of Physical and Computational Sciences, College of Science, Kwame Nkrumah University of Science and Technology, GhanaVolatile organic compounds are released by plants in defense against herbivory feeding by insect pests. Pod-sucking bugs can cause 30–70 % yield losses in cowpea (Vigna unguiculata) which serves as a major source of rich proteins and vitamins for humans and animals, as well as a source of income for farmers. The purpose of this study was to determine the chemical composition of the headspace volatiles of intact cowpea pods (Vigna unguiculata) variety (Padituya), and when it is infested by two pod-sucking bugs Riptortus dentipes and Nezara viridula. Headspace volatile collection was employed to collect volatile organic compounds from the intact cowpea pods, cowpea pods infested with Riptortus dentipes, and cowpea pods infested with Nezara viridula. Entrainment was done for 96 h in each case. The entrained volatiles were analyzed by gas chromatograph coupled with a mass spectrometer (GC-MS). Analysis of GC-MS data led to the identification of 1-octen-3-ol, 3-octanol, 2-nonanone, oleic acid, octadecanoic acid and dodecanoic acid as the volatiles released by the cowpea pod without insect attack. Cowpea pods attacked by Riptortus dentipes released hexanoic acid, 3-hexenoic acid (E), hexanoic acid, 2-hexenyl hexanoate (E), 2-tridecanone, 1-(4-ethylphenyl)-ethanone and eicosanoic acid. Upon infestation with Nezara viridula, the pods released 2-pentanone, 4-hydroxy-4-methyl-, 3-ethylbenzaldehyde, 1-(4-ethylphenyl)-ethanone and 2-decenyl acetate (E). With the exception of 1-(4-ethylphenyl)-ethanone, different volatile organic compounds were released by the cowpea plant against the two pests upon infestation. These compounds could be synthesized and used in integrated pest management of these pests to reduce losses in yield of cowpea production.http://www.sciencedirect.com/science/article/pii/S2468227623004659Vigna unguiculataRiptortus dentipesNezara viridulaGas Chromatography Mass Spectrometry (GC-MS)Volatile organic compounds |
| spellingShingle | Akwasi Acheampong Owusu Bempah Jonathan Osei-Owusu Samuel Osafo-Acquaah Chemical composition of the headspace volatiles of intact cowpea pods and cowpea pods infested by Riptortus dentipes and Nezara viridula pests Scientific African Vigna unguiculata Riptortus dentipes Nezara viridula Gas Chromatography Mass Spectrometry (GC-MS) Volatile organic compounds |
| title | Chemical composition of the headspace volatiles of intact cowpea pods and cowpea pods infested by Riptortus dentipes and Nezara viridula pests |
| title_full | Chemical composition of the headspace volatiles of intact cowpea pods and cowpea pods infested by Riptortus dentipes and Nezara viridula pests |
| title_fullStr | Chemical composition of the headspace volatiles of intact cowpea pods and cowpea pods infested by Riptortus dentipes and Nezara viridula pests |
| title_full_unstemmed | Chemical composition of the headspace volatiles of intact cowpea pods and cowpea pods infested by Riptortus dentipes and Nezara viridula pests |
| title_short | Chemical composition of the headspace volatiles of intact cowpea pods and cowpea pods infested by Riptortus dentipes and Nezara viridula pests |
| title_sort | chemical composition of the headspace volatiles of intact cowpea pods and cowpea pods infested by riptortus dentipes and nezara viridula pests |
| topic | Vigna unguiculata Riptortus dentipes Nezara viridula Gas Chromatography Mass Spectrometry (GC-MS) Volatile organic compounds |
| url | http://www.sciencedirect.com/science/article/pii/S2468227623004659 |
| work_keys_str_mv | AT akwasiacheampong chemicalcompositionoftheheadspacevolatilesofintactcowpeapodsandcowpeapodsinfestedbyriptortusdentipesandnezaraviridulapests AT owusubempah chemicalcompositionoftheheadspacevolatilesofintactcowpeapodsandcowpeapodsinfestedbyriptortusdentipesandnezaraviridulapests AT jonathanoseiowusu chemicalcompositionoftheheadspacevolatilesofintactcowpeapodsandcowpeapodsinfestedbyriptortusdentipesandnezaraviridulapests AT samuelosafoacquaah chemicalcompositionoftheheadspacevolatilesofintactcowpeapodsandcowpeapodsinfestedbyriptortusdentipesandnezaraviridulapests |