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| Content Provider | Springer Nature Link |
|---|---|
| Author | Kumar, Koppolu Raja Rajesh Srinivasan, Tantravahi Kirti, Pulugurtha Bharadwaja |
| Copyright Year | 2009 |
| Abstract | Mitogen-activated protein kinase cascade plays a very important role in plant signal transduction mechanism. A full length cDNA of 1,514 bp length, corresponding to a mitogen-activated protein kinase gene was cloned from peanut (Arachis hypogaea). Based on its high homology with Arabidopsis AtMPK3, the cDNA was designated as AhMPK3. It carried an open reading frame of 1,113 bp encoding a 371 amino acid polypeptide. AhMPK3 bears TEY motif in its activation loop and belongs to the A1 subgroup of MAPK family. Southern blot analysis revealed that AhMPK3 exists in two copies in peanut genome and its structural organization revealed well-conserved nature of these signaling components across different species. AhMPK3 when transiently expressed in tobacco leaves was found to localize in both nucleus and cytoplasm. Transgenic tobacco plants ectopically expressing AhMPK3 exhibited enhanced resistance to first and second instar larvae of Spodoptera litura and constitutively higher transcript levels of defense response genes like PR1a, PR1b, LOX1, PI–II etc. Apart from this when wounded, transgenic plants accumulated high levels of PI–II and PR1b transcripts rapidly compared to wild type indicating the occurrence of a priming phenomenon. |
| Starting Page | 65 |
| Ending Page | 81 |
| Page Count | 17 |
| File Format | |
| ISSN | 16174615 |
| Journal | Molecular and General Genetics MGG |
| Volume Number | 282 |
| Issue Number | 1 |
| e-ISSN | 16174623 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2009-04-08 |
| Publisher Place | Berlin/Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Arachis hypogaea MAPK Transgenic tobacco Herbivore resistance Protease inhibitor-II Animal Genetics and Genomics Microbial Genetics and Genomics Cell Biology Plant Genetics & Genomics Biochemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Medicine Molecular Biology |
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