Chemical composition and screening for antifungal activity of Allamanda spp. (Apocynaceae) crude extracts against Colletotrichum gloeosporioides, causal agent of anthracnose in papaya
Leaf extracts of Allamanda blanchetti, Allamanda cathartica, Allamanda cathartica ‘Alba’, Allamanda cathartica ‘Jamaican Sunset’ and Allamanda oenotheraefolia were screened for antifungal activities in vitro and in vivo. The results from all experiments proved that petroleum ether, chloroform and m...
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American-Eurasian Network for Scientific Information
2013
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| Online Access: | http://psasir.upm.edu.my/id/eprint/29500/ |
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| author | Haron, Farah Farhanah Sijam, Kamaruzaman Omar, Dzolkhifli Rahmani, Mawardi |
| author_facet | Haron, Farah Farhanah Sijam, Kamaruzaman Omar, Dzolkhifli Rahmani, Mawardi |
| author_sort | Haron, Farah Farhanah |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Leaf extracts of Allamanda blanchetti, Allamanda cathartica, Allamanda cathartica ‘Alba’, Allamanda cathartica ‘Jamaican Sunset’ and Allamanda oenotheraefolia were screened for antifungal activities in vitro and in vivo. The results from all experiments proved that petroleum ether, chloroform
and methanol extracts of all plants possessed fungistatic or fungicidal properties on growth of Colletotrichum gloeosporioides which increased at higher extract concentrations. Scanning electron microscope observations showed that active extracts resulted in hyphal degradation where hyphae were retarded. A significantly lower disease incidence, severity, and index were observed in Allamanda
treated papaya fruits. Fruits coated with chloroform extracts of A. blanchetti A. cathartica ‘Alba’, and A. cathartica ‘Jamaican Sunset’ showed maximum reduction in anthracnose incidence and severity scores were always 1 (1-25%) and 0 (0%). Antifungal effects of the most effective extracts were
supported by the presence of chemical constituents indentified by GC-MS. Campesterol, �-sitosterol, stigmasterol, plumericin, squalene, and α-Tocopherol were detected as major compounds in Allamanda species that were possibly responsible for the antifungal activity. |
| first_indexed | 2025-11-15T09:02:21Z |
| format | Article |
| id | upm-29500 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T09:02:21Z |
| publishDate | 2013 |
| publisher | American-Eurasian Network for Scientific Information |
| recordtype | eprints |
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| spelling | upm-295002015-12-08T07:38:57Z http://psasir.upm.edu.my/id/eprint/29500/ Chemical composition and screening for antifungal activity of Allamanda spp. (Apocynaceae) crude extracts against Colletotrichum gloeosporioides, causal agent of anthracnose in papaya Haron, Farah Farhanah Sijam, Kamaruzaman Omar, Dzolkhifli Rahmani, Mawardi Leaf extracts of Allamanda blanchetti, Allamanda cathartica, Allamanda cathartica ‘Alba’, Allamanda cathartica ‘Jamaican Sunset’ and Allamanda oenotheraefolia were screened for antifungal activities in vitro and in vivo. The results from all experiments proved that petroleum ether, chloroform and methanol extracts of all plants possessed fungistatic or fungicidal properties on growth of Colletotrichum gloeosporioides which increased at higher extract concentrations. Scanning electron microscope observations showed that active extracts resulted in hyphal degradation where hyphae were retarded. A significantly lower disease incidence, severity, and index were observed in Allamanda treated papaya fruits. Fruits coated with chloroform extracts of A. blanchetti A. cathartica ‘Alba’, and A. cathartica ‘Jamaican Sunset’ showed maximum reduction in anthracnose incidence and severity scores were always 1 (1-25%) and 0 (0%). Antifungal effects of the most effective extracts were supported by the presence of chemical constituents indentified by GC-MS. Campesterol, �-sitosterol, stigmasterol, plumericin, squalene, and α-Tocopherol were detected as major compounds in Allamanda species that were possibly responsible for the antifungal activity. American-Eurasian Network for Scientific Information 2013-01 Article NonPeerReviewed Haron, Farah Farhanah and Sijam, Kamaruzaman and Omar, Dzolkhifli and Rahmani, Mawardi (2013) Chemical composition and screening for antifungal activity of Allamanda spp. (Apocynaceae) crude extracts against Colletotrichum gloeosporioides, causal agent of anthracnose in papaya. Australian Journal of Basic and Applied Sciences, 7 (1). pp. 88-96. ISSN 1991-8178 http://www.ajbasweb.com/old/ajbas_january_2013.html |
| spellingShingle | Haron, Farah Farhanah Sijam, Kamaruzaman Omar, Dzolkhifli Rahmani, Mawardi Chemical composition and screening for antifungal activity of Allamanda spp. (Apocynaceae) crude extracts against Colletotrichum gloeosporioides, causal agent of anthracnose in papaya |
| title | Chemical composition and screening for antifungal activity of Allamanda spp. (Apocynaceae) crude extracts against Colletotrichum gloeosporioides, causal agent of anthracnose in papaya |
| title_full | Chemical composition and screening for antifungal activity of Allamanda spp. (Apocynaceae) crude extracts against Colletotrichum gloeosporioides, causal agent of anthracnose in papaya |
| title_fullStr | Chemical composition and screening for antifungal activity of Allamanda spp. (Apocynaceae) crude extracts against Colletotrichum gloeosporioides, causal agent of anthracnose in papaya |
| title_full_unstemmed | Chemical composition and screening for antifungal activity of Allamanda spp. (Apocynaceae) crude extracts against Colletotrichum gloeosporioides, causal agent of anthracnose in papaya |
| title_short | Chemical composition and screening for antifungal activity of Allamanda spp. (Apocynaceae) crude extracts against Colletotrichum gloeosporioides, causal agent of anthracnose in papaya |
| title_sort | chemical composition and screening for antifungal activity of allamanda spp. (apocynaceae) crude extracts against colletotrichum gloeosporioides, causal agent of anthracnose in papaya |
| url | http://psasir.upm.edu.my/id/eprint/29500/ http://psasir.upm.edu.my/id/eprint/29500/ |