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Molecular characterisation of two homoeologous elicitor-responsive lipin genes in cotton
| Content Provider | Semantic Scholar |
|---|---|
| Author | Phillips, Sonia M. Dubery, Ian A. Heerden, Henriette Van |
| Copyright Year | 2013 |
| Abstract | The identification and molecular characterisation of two lipin-like gene copies (GhLIPN) in cotton, Gossypium hirsutum, an allotetraploid derived from two progenitor diploid Gossypium species, is described. Sequence analyses of the GhLIPN copies, designated GhLIPN-1 and -2, revealed that they contain 11 exons, separated by ten introns. They each have a 2,643 bp open reading frame that encodes 880 aa proteins, and share a 97.7 and 95.5 % sequence similarity at the translated nucleotide and amino acid level, respectively. The GhLIPN genes have a distinct domain architecture consisting of an archetypical N-terminal lipin domain, followed by a haloacid dehalogenase (HAD) domain towards the C-terminus. A Southern blot did not distinguish between the two gene copies, which suggests that they may be homoeologs rather than paralogs. GhLIPN-2 is more similar to a homoeologous sequence from G.raimondii, representing the ancestral D-genome, compared to GhLIPN-1 that matches G. herbaceum and that represents the A-genome. Our data indicate that GhLIPN-1 and GhLIPN-2 are homoeologs that derive from the A- and the D-diploid genomes, respectively. The promoter sequences of GhLIPN-1 and -2 differ by 56 %, as a result of multiple indels. In silico analysis of the promoter regions revealed that both genes contain numerous putative defence-related and elicitor-responsive cis-elements that support a role for GhLIPN in defence responses. Relative quantification real-time PCR confirmed the up-regulation in response to a cell-wall-derived V. dahliae elicitor, which supported the association of GhLIPN with defence signalling. The results add a new dimension to the proposed roles of lipins in plants by suggesting that lipins may have a role in defence signalling. |
| Starting Page | 519 |
| Ending Page | 533 |
| Page Count | 15 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s00438-013-0770-8 |
| PubMed reference number | 23897433 |
| Journal | Medline |
| Volume Number | 288 |
| Alternate Webpage(s) | https://repository.up.ac.za/bitstream/handle/2263/32378/Phillips_Molecular(2013).pdf;jsessionid=BD8104B52EED5080B1B187EB10C3791B?sequence=1 |
| Alternate Webpage(s) | https://doi.org/10.1007/s00438-013-0770-8 |
| Journal | Molecular Genetics and Genomics |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
