Effects of seed soaking and foliar spraying of Kalanchoe pinnata aqueous leaf extracts against rice bacterial leaf blight
This study aims at evaluating the disease-reducing effects against rice bacterial leaf blight (Xanthomonas oryzae pv. oryzae). Under greenhouse conditions, the activities of the four enzymes [peroxidase (POX), catalase (CAT), polyphenol oxidase (PPO) and phenylalanine ammonia lyase (PAL)] after app...
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Can Tho University Publisher
2023-11-01
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| Series: | CTU Journal of Innovation and Sustainable Development |
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| Online Access: | http://web2010.thanhtoan/index.php/ctujs/article/view/604 |
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| author | Xa Truong Van Kim Thoa Tran Tran Anh Thu Thai Dac Khoa Nguyen |
| author_facet | Xa Truong Van Kim Thoa Tran Tran Anh Thu Thai Dac Khoa Nguyen |
| author_sort | Xa Truong Van |
| collection | DOAJ |
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This study aims at evaluating the disease-reducing effects against rice bacterial leaf blight (Xanthomonas oryzae pv. oryzae). Under greenhouse conditions, the activities of the four enzymes [peroxidase (POX), catalase (CAT), polyphenol oxidase (PPO) and phenylalanine ammonia lyase (PAL)] after application of Kalanchoe pinnata aqueous leaf extracts using the combination of seed soaking and foliar spraying were studied. Overall, two extract concentrations [1 and 2% (w/v)] applied as seed soaking combined with the five extract concentrations [1, 2, 3, 4 and 5% (w/v)] applied as foliar spraying were tested. Three application methods were furthermore used for foliar spraying (7 days before pathogen inoculation (DBI), 14 DBI and their combination). Results showed the effects increased with the increase of extract concentrations and durations from application time points prior to pathogen inoculation. The combination of foliar spraying at 7 and 14 DBI provided stronger protection compared to single sprays. The effects involved induced resistance. Indeed, the activities of POX and CAT increased until 4 days after inoculation (DAI) and remained until 7 DAI, while those of PPO and PAL increased similarly then decreased until 7 DAI. Activities of these enzymes increased after pathogen inoculation and reached higher levels with extract applications.
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| format | Article |
| id | doaj-art-a2d3149d7a0b449db40d91ef516a1abb |
| institution | Kabale University |
| issn | 2588-1418 2815-6412 |
| language | English |
| publishDate | 2023-11-01 |
| publisher | Can Tho University Publisher |
| record_format | Article |
| series | CTU Journal of Innovation and Sustainable Development |
| spelling | doaj-art-a2d3149d7a0b449db40d91ef516a1abb2025-08-20T03:26:35ZengCan Tho University PublisherCTU Journal of Innovation and Sustainable Development2588-14182815-64122023-11-01153Effects of seed soaking and foliar spraying of Kalanchoe pinnata aqueous leaf extracts against rice bacterial leaf blightXa Truong Van Kim Thoa TranTran Anh Thu ThaiDac Khoa Nguyen This study aims at evaluating the disease-reducing effects against rice bacterial leaf blight (Xanthomonas oryzae pv. oryzae). Under greenhouse conditions, the activities of the four enzymes [peroxidase (POX), catalase (CAT), polyphenol oxidase (PPO) and phenylalanine ammonia lyase (PAL)] after application of Kalanchoe pinnata aqueous leaf extracts using the combination of seed soaking and foliar spraying were studied. Overall, two extract concentrations [1 and 2% (w/v)] applied as seed soaking combined with the five extract concentrations [1, 2, 3, 4 and 5% (w/v)] applied as foliar spraying were tested. Three application methods were furthermore used for foliar spraying (7 days before pathogen inoculation (DBI), 14 DBI and their combination). Results showed the effects increased with the increase of extract concentrations and durations from application time points prior to pathogen inoculation. The combination of foliar spraying at 7 and 14 DBI provided stronger protection compared to single sprays. The effects involved induced resistance. Indeed, the activities of POX and CAT increased until 4 days after inoculation (DAI) and remained until 7 DAI, while those of PPO and PAL increased similarly then decreased until 7 DAI. Activities of these enzymes increased after pathogen inoculation and reached higher levels with extract applications. http://web2010.thanhtoan/index.php/ctujs/article/view/604Bacterial leaf blight, induced resistance, Kalanchoe pinnata, plant extract, rice, Xanthomonas oryzae pv. oryzae |
| spellingShingle | Xa Truong Van Kim Thoa Tran Tran Anh Thu Thai Dac Khoa Nguyen Effects of seed soaking and foliar spraying of Kalanchoe pinnata aqueous leaf extracts against rice bacterial leaf blight CTU Journal of Innovation and Sustainable Development Bacterial leaf blight, induced resistance, Kalanchoe pinnata, plant extract, rice, Xanthomonas oryzae pv. oryzae |
| title | Effects of seed soaking and foliar spraying of Kalanchoe pinnata aqueous leaf extracts against rice bacterial leaf blight |
| title_full | Effects of seed soaking and foliar spraying of Kalanchoe pinnata aqueous leaf extracts against rice bacterial leaf blight |
| title_fullStr | Effects of seed soaking and foliar spraying of Kalanchoe pinnata aqueous leaf extracts against rice bacterial leaf blight |
| title_full_unstemmed | Effects of seed soaking and foliar spraying of Kalanchoe pinnata aqueous leaf extracts against rice bacterial leaf blight |
| title_short | Effects of seed soaking and foliar spraying of Kalanchoe pinnata aqueous leaf extracts against rice bacterial leaf blight |
| title_sort | effects of seed soaking and foliar spraying of kalanchoe pinnata aqueous leaf extracts against rice bacterial leaf blight |
| topic | Bacterial leaf blight, induced resistance, Kalanchoe pinnata, plant extract, rice, Xanthomonas oryzae pv. oryzae |
| url | http://web2010.thanhtoan/index.php/ctujs/article/view/604 |
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