Contrasted gene expression across conifers with rising and peaking abscisic acid responses to drought.
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| Format: | Artículo científico |
| Sprache: | en |
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Plant stress (Amsterdam, Netherlands)
2024
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| _version_ | 1868266228845379585 |
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| author | Rizzuto, Gabriele Wang, Dapeng Chen, Jinhui Hung, Tin Hang Fitzky, Anne Charlott Flashman, Emily MacKay, John J |
| author_facet | Rizzuto, Gabriele Wang, Dapeng Chen, Jinhui Hung, Tin Hang Fitzky, Anne Charlott Flashman, Emily MacKay, John J Rizzuto, Gabriele Wang, Dapeng Chen, Jinhui Hung, Tin Hang Fitzky, Anne Charlott Flashman, Emily MacKay, John J |
| collection | PubMed - marine biology |
| contents | Contrasted gene expression across conifers with rising and peaking abscisic acid responses to drought. Rizzuto, Gabriele Wang, Dapeng Chen, Jinhui Hung, Tin Hang Fitzky, Anne Charlott Flashman, Emily MacKay, John J Conifer trees have diverse strategies to cope with drought. They accumulate the plant hormone abscisic acid (ABA) following a range of profiles from constantly rising to peaking and falling (R- and P-type) with direct effect on foliar transpiration. The molecular basis of this adaptive diversification among species is largely unknown. Here, we analysed the sequences of candidate ABA biosynthesis and catabolism genes and monitored their expression in response to intensifying drought. We studied young trees from Cupressaceae, Pinaceae, and Taxaceae under controlled drought conditions and compared changes in water status, ABA profiles and gene-specific transcript levels. Our data indicate that R-type and P-type ABA profiles may be controlled by divergent expression of genes involved in the biosynthetic and catabolic pathways of ABA, respectively, and emphasize a key role of nine--epoxycarotenoid dioxygenases () genes. Our results open the doors to understanding the molecular basis of contrasted drought response strategies across conifer taxa, which we expect will help foresters grow more drought-resilient trees. |
| format | Artículo científico |
| id | pubmed_40110485 |
| institution | PubMed |
| language | en |
| publishDate | 2024 |
| publisher | Plant stress (Amsterdam, Netherlands) |
| record_format | pubmed |
| spellingShingle | Contrasted gene expression across conifers with rising and peaking abscisic acid responses to drought. Rizzuto, Gabriele Wang, Dapeng Chen, Jinhui Hung, Tin Hang Fitzky, Anne Charlott Flashman, Emily MacKay, John J Contrasted gene expression across conifers with rising and peaking abscisic acid responses to drought. Rizzuto, Gabriele Wang, Dapeng Chen, Jinhui Hung, Tin Hang Fitzky, Anne Charlott Flashman, Emily MacKay, John J Conifer trees have diverse strategies to cope with drought. They accumulate the plant hormone abscisic acid (ABA) following a range of profiles from constantly rising to peaking and falling (R- and P-type) with direct effect on foliar transpiration. The molecular basis of this adaptive diversification among species is largely unknown. Here, we analysed the sequences of candidate ABA biosynthesis and catabolism genes and monitored their expression in response to intensifying drought. We studied young trees from Cupressaceae, Pinaceae, and Taxaceae under controlled drought conditions and compared changes in water status, ABA profiles and gene-specific transcript levels. Our data indicate that R-type and P-type ABA profiles may be controlled by divergent expression of genes involved in the biosynthetic and catabolic pathways of ABA, respectively, and emphasize a key role of nine--epoxycarotenoid dioxygenases () genes. Our results open the doors to understanding the molecular basis of contrasted drought response strategies across conifer taxa, which we expect will help foresters grow more drought-resilient trees. |
| title | Contrasted gene expression across conifers with rising and peaking abscisic acid responses to drought. |
| url | https://pubmed.ncbi.nlm.nih.gov/40110485/ |