Salicylic acid metabolism and signalling coordinate senescence initiation in aspen in nature
Abstract Deciduous trees exhibit a spectacular phenomenon of autumn senescence driven by the seasonality of their growth environment, yet there is no consensus which external or internal cues trigger it. Senescence starts at different times in European aspen (Populus tremula L.) genotypes grown in s...
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-07-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-39564-5 |
| _version_ | 1797774112541638656 |
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| author | Jenna Lihavainen Jan Šimura Pushan Bag Nazeer Fataftah Kathryn Megan Robinson Nicolas Delhomme Ondřej Novák Karin Ljung Stefan Jansson |
| author_facet | Jenna Lihavainen Jan Šimura Pushan Bag Nazeer Fataftah Kathryn Megan Robinson Nicolas Delhomme Ondřej Novák Karin Ljung Stefan Jansson |
| author_sort | Jenna Lihavainen |
| collection | DOAJ |
| description | Abstract Deciduous trees exhibit a spectacular phenomenon of autumn senescence driven by the seasonality of their growth environment, yet there is no consensus which external or internal cues trigger it. Senescence starts at different times in European aspen (Populus tremula L.) genotypes grown in same location. By integrating omics studies, we demonstrate that aspen genotypes utilize similar transcriptional cascades and metabolic cues to initiate senescence, but at different times during autumn. The timing of autumn senescence initiation appeared to be controlled by two consecutive “switches”; 1) first the environmental variation induced the rewiring of the transcriptional network, stress signalling pathways and metabolic perturbations and 2) the start of senescence process was defined by the ability of the genotype to activate and sustain stress tolerance mechanisms mediated by salicylic acid. We propose that salicylic acid represses the onset of leaf senescence in stressful natural conditions, rather than promoting it as often observed in annual plants. |
| first_indexed | 2024-03-12T22:16:17Z |
| format | Article |
| id | doaj.art-cf0fd4d957854213b570b2f23b86dd41 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-12T22:16:17Z |
| publishDate | 2023-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-cf0fd4d957854213b570b2f23b86dd412023-07-23T11:18:20ZengNature PortfolioNature Communications2041-17232023-07-0114112010.1038/s41467-023-39564-5Salicylic acid metabolism and signalling coordinate senescence initiation in aspen in natureJenna Lihavainen0Jan Šimura1Pushan Bag2Nazeer Fataftah3Kathryn Megan Robinson4Nicolas Delhomme5Ondřej Novák6Karin Ljung7Stefan Jansson8Umeå Plant Science Centre, Department of Plant Physiology, Umeå UniversityUmeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural SciencesUmeå Plant Science Centre, Department of Plant Physiology, Umeå UniversityUmeå Plant Science Centre, Department of Plant Physiology, Umeå UniversityUmeå Plant Science Centre, Department of Plant Physiology, Umeå UniversityUmeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural SciencesUmeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural SciencesUmeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural SciencesUmeå Plant Science Centre, Department of Plant Physiology, Umeå UniversityAbstract Deciduous trees exhibit a spectacular phenomenon of autumn senescence driven by the seasonality of their growth environment, yet there is no consensus which external or internal cues trigger it. Senescence starts at different times in European aspen (Populus tremula L.) genotypes grown in same location. By integrating omics studies, we demonstrate that aspen genotypes utilize similar transcriptional cascades and metabolic cues to initiate senescence, but at different times during autumn. The timing of autumn senescence initiation appeared to be controlled by two consecutive “switches”; 1) first the environmental variation induced the rewiring of the transcriptional network, stress signalling pathways and metabolic perturbations and 2) the start of senescence process was defined by the ability of the genotype to activate and sustain stress tolerance mechanisms mediated by salicylic acid. We propose that salicylic acid represses the onset of leaf senescence in stressful natural conditions, rather than promoting it as often observed in annual plants.https://doi.org/10.1038/s41467-023-39564-5 |
| spellingShingle | Jenna Lihavainen Jan Šimura Pushan Bag Nazeer Fataftah Kathryn Megan Robinson Nicolas Delhomme Ondřej Novák Karin Ljung Stefan Jansson Salicylic acid metabolism and signalling coordinate senescence initiation in aspen in nature Nature Communications |
| title | Salicylic acid metabolism and signalling coordinate senescence initiation in aspen in nature |
| title_full | Salicylic acid metabolism and signalling coordinate senescence initiation in aspen in nature |
| title_fullStr | Salicylic acid metabolism and signalling coordinate senescence initiation in aspen in nature |
| title_full_unstemmed | Salicylic acid metabolism and signalling coordinate senescence initiation in aspen in nature |
| title_short | Salicylic acid metabolism and signalling coordinate senescence initiation in aspen in nature |
| title_sort | salicylic acid metabolism and signalling coordinate senescence initiation in aspen in nature |
| url | https://doi.org/10.1038/s41467-023-39564-5 |
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