Regulation of inducible enzymes and suppression of anthracnose using submicron chitosan dispersions
The mechanism of suppression of Colletotrichum gloeosporioides was studied by using submicron chitosan dispersions. In vitro and in vivo experiments showed that mycelial growth and disease incidence/ severity were significantly (P < 0.05) suppressed in 600 nm submicron chitosan dispersion at 1% c...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2015
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/46116/ http://psasir.upm.edu.my/id/eprint/46116/1/Regulation%20of%20inducible%20enzymes%20and%20suppression%20of%20anthracnose%20using%20submicron%20chitosan%20dispersions.pdf |
| _version_ | 1848850597214683136 |
|---|---|
| author | Zahid, Noosheen Maqbool, Mehdi Siddiqui, Yasmeen Manickam, Sivakumar Ali, Asgar |
| author_facet | Zahid, Noosheen Maqbool, Mehdi Siddiqui, Yasmeen Manickam, Sivakumar Ali, Asgar |
| author_sort | Zahid, Noosheen |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The mechanism of suppression of Colletotrichum gloeosporioides was studied by using submicron chitosan dispersions. In vitro and in vivo experiments showed that mycelial growth and disease incidence/ severity were significantly (P < 0.05) suppressed in 600 nm submicron chitosan dispersion at 1% chitosan concentration. Field trials showed that host resistance was stimulated in dragon fruit plants at all the submicron chitosan dispersions (SCD) used. Results showed that the application of SCD significantly enhanced the production of plant-defense related enzymes such as PO, PPO and PAL. A further increase in inducible compounds and PR proteins was observed in plants inoculated with C. gloeosporioides. Increase in inducible compounds and delayed symptoms of anthracnose indicated the possible mechanism of induced resistance. However, the resistance decreased with the passage of time which could be due to highly stressed environment of the plants. Therefore, it is suggested that the plants should be sprayed with SCD to sustain the absolute effect. |
| first_indexed | 2025-11-15T10:08:49Z |
| format | Article |
| id | upm-46116 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:08:49Z |
| publishDate | 2015 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-461162018-05-07T00:58:36Z http://psasir.upm.edu.my/id/eprint/46116/ Regulation of inducible enzymes and suppression of anthracnose using submicron chitosan dispersions Zahid, Noosheen Maqbool, Mehdi Siddiqui, Yasmeen Manickam, Sivakumar Ali, Asgar The mechanism of suppression of Colletotrichum gloeosporioides was studied by using submicron chitosan dispersions. In vitro and in vivo experiments showed that mycelial growth and disease incidence/ severity were significantly (P < 0.05) suppressed in 600 nm submicron chitosan dispersion at 1% chitosan concentration. Field trials showed that host resistance was stimulated in dragon fruit plants at all the submicron chitosan dispersions (SCD) used. Results showed that the application of SCD significantly enhanced the production of plant-defense related enzymes such as PO, PPO and PAL. A further increase in inducible compounds and PR proteins was observed in plants inoculated with C. gloeosporioides. Increase in inducible compounds and delayed symptoms of anthracnose indicated the possible mechanism of induced resistance. However, the resistance decreased with the passage of time which could be due to highly stressed environment of the plants. Therefore, it is suggested that the plants should be sprayed with SCD to sustain the absolute effect. Elsevier 2015-09 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/46116/1/Regulation%20of%20inducible%20enzymes%20and%20suppression%20of%20anthracnose%20using%20submicron%20chitosan%20dispersions.pdf Zahid, Noosheen and Maqbool, Mehdi and Siddiqui, Yasmeen and Manickam, Sivakumar and Ali, Asgar (2015) Regulation of inducible enzymes and suppression of anthracnose using submicron chitosan dispersions. Scientia Horticulturae, 193. pp. 381-388. ISSN 0304-4238 10.1016/j.scienta.2015.07.014 |
| spellingShingle | Zahid, Noosheen Maqbool, Mehdi Siddiqui, Yasmeen Manickam, Sivakumar Ali, Asgar Regulation of inducible enzymes and suppression of anthracnose using submicron chitosan dispersions |
| title | Regulation of inducible enzymes and suppression of anthracnose using submicron chitosan dispersions |
| title_full | Regulation of inducible enzymes and suppression of anthracnose using submicron chitosan dispersions |
| title_fullStr | Regulation of inducible enzymes and suppression of anthracnose using submicron chitosan dispersions |
| title_full_unstemmed | Regulation of inducible enzymes and suppression of anthracnose using submicron chitosan dispersions |
| title_short | Regulation of inducible enzymes and suppression of anthracnose using submicron chitosan dispersions |
| title_sort | regulation of inducible enzymes and suppression of anthracnose using submicron chitosan dispersions |
| url | http://psasir.upm.edu.my/id/eprint/46116/ http://psasir.upm.edu.my/id/eprint/46116/ http://psasir.upm.edu.my/id/eprint/46116/1/Regulation%20of%20inducible%20enzymes%20and%20suppression%20of%20anthracnose%20using%20submicron%20chitosan%20dispersions.pdf |