Hevea genetic transformation: A molecular approach to enhance resistance to Corynespora leaf disease (Record no. 60323)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02347nam a2200241Ia 4500 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Sunderasan E |
| 245 #0 - TITLE STATEMENT | |
| Title | Hevea genetic transformation: A molecular approach to enhance resistance to Corynespora leaf disease |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher | International Workshop on Rubber Tree Breeding, IRRDB, Brazil, 4-7 April 2011 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | The pathogenic fungus Corynespora cassiicola a serious threat to rubber trees (Hevea brasiliensis); the infected leaves develop necrotic lesions and abscise, leaving the tree unproductive. The destructiveness of C. cassiicola has been laegely attributed to cassiicolin, a secreted protein toxin of the fungus. Recombinant antibody technology coupled to genetic transformation offer hope to curtail the disease in Hevea. Single chain variable fragment (scFv) specific to cassiicolin could bind and deactivate the toxin in genetically modified rubber trees that harbour the functional antibody gene. A scFv phage library was constructed from cassiicolin immunized Balb/C mice spleen IgG heavy and light variable chains. Biopanning of the phage library yielded a scFv clone with high specificity to cassiicolin. Nucleotide sequence and deduced amino acid sequence information of the scFv were obtained. The hemmagglutinin (HA) tagged scFv expressed in Escherichia coli is discerned as a band at circa 30 kDa on SDS-PAGE. The corresponding band was detected by anti-HA IgG on a western immunoblot of the gel. Homology-based modeling was employed to create three-dimensional structures of the scFv antibody and cassiicolin, and binding (docking) of the antibody to the toxin antigen was simulated. Furthermore, deactivation of cassiicolin by the scFv was demonstrated by detached leaf bio-assay on selected susceptible Hevea clones. Efforts are underway to genetically transform Hevea clones with the cassiicolin-specific scFv gene to enhance resistance to Corynespora leaf disease. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Cassiicolin |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Cassiicolin-swpecific scFv |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Corynespora cassiicola |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Detached Hevea leaf bioassay |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Genetic transformation |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Badarudin Badrul Ezam |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Kadir Rusni K |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Malik Adeel |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Nathan Sheila |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Pujade-Renaud Valerie |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Yeang H Y |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Journals |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Koha item type |
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| Journals | RRII Library | RRII Library | Biotechnology | 03/08/2011 | Journals |