Contributions of phenotypic integration, plasticity and genetic adaptation to adaptive capacity relating to drought in Banksia marginata (Proteaceae)
The frequency and intensity of drought events are predicted to increase because of climate change, threatening biodiversity and terrestrial ecosystems in many parts of the world. Drought has already led to declines in functionally important tree species, which are documented in dieback events, shift...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2023-04-01
|
| Series: | Frontiers in Plant Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2023.1150116/full |
| _version_ | 1827963708447391744 |
|---|---|
| author | Osazee O. Oyanoghafo Osazee O. Oyanoghafo Adam D. Miller Madeline Toomey Collin W. Ahrens Collin W. Ahrens David T. Tissue David T. Tissue Paul D. Rymer |
| author_facet | Osazee O. Oyanoghafo Osazee O. Oyanoghafo Adam D. Miller Madeline Toomey Collin W. Ahrens Collin W. Ahrens David T. Tissue David T. Tissue Paul D. Rymer |
| author_sort | Osazee O. Oyanoghafo |
| collection | DOAJ |
| description | The frequency and intensity of drought events are predicted to increase because of climate change, threatening biodiversity and terrestrial ecosystems in many parts of the world. Drought has already led to declines in functionally important tree species, which are documented in dieback events, shifts in species distributions, local extinctions, and compromised ecosystem function. Understanding whether tree species possess the capacity to adapt to future drought conditions is a major conservation challenge. In this study, we assess the capacity of a functionally important plant species from south-eastern Australia (Banksia marginata, Proteaceae) to adapt to water-limited environments. A water-manipulated common garden experiment was used to test for phenotypic plasticity and genetic adaptation in seedlings sourced from seven provenances of contrasting climate-origins (wet and dry). We found evidence of local adaptation relating to plant growth investment strategies with populations from drier climate-origins showing greater growth in well-watered conditions. The results also revealed that environment drives variation in physiological (stomatal conductance, predawn and midday water potential) and structural traits (wood density, leaf dry matter content). Finally, these results indicate that traits are coordinated to optimize conservation of water under water-limited conditions and that trait coordination (phenotypic integration) does not constrain phenotypic plasticity. Overall, this study provides evidence for adaptive capacity relating to drought conditions in B. marginata, and a basis for predicting the response to climate change in this functionally important plant species. |
| first_indexed | 2024-04-09T17:02:24Z |
| format | Article |
| id | doaj.art-c7a32cc5dcd8455daefffa0ccbc14af3 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-04-09T17:02:24Z |
| publishDate | 2023-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-c7a32cc5dcd8455daefffa0ccbc14af32023-04-21T04:30:13ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2023-04-011410.3389/fpls.2023.11501161150116Contributions of phenotypic integration, plasticity and genetic adaptation to adaptive capacity relating to drought in Banksia marginata (Proteaceae)Osazee O. Oyanoghafo0Osazee O. Oyanoghafo1Adam D. Miller2Madeline Toomey3Collin W. Ahrens4Collin W. Ahrens5David T. Tissue6David T. Tissue7Paul D. Rymer8Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, AustraliaDepartment of Plant Biology and Biotechnology, Faculty of Life Sciences, University of Benin, Benin, NigeriaSchool of Life and Environmental Sciences, Deakin University, Princes Highway, Warrnambool, VIC, AustraliaSchool of Life and Environmental Sciences, Deakin University, Princes Highway, Warrnambool, VIC, AustraliaHawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, AustraliaCesar Australia, Brunswick, VIC, AustraliaHawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, AustraliaGlobal Centre for Land-Based Innovation, Western Sydney University, Richmond, NSW, AustraliaHawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, AustraliaThe frequency and intensity of drought events are predicted to increase because of climate change, threatening biodiversity and terrestrial ecosystems in many parts of the world. Drought has already led to declines in functionally important tree species, which are documented in dieback events, shifts in species distributions, local extinctions, and compromised ecosystem function. Understanding whether tree species possess the capacity to adapt to future drought conditions is a major conservation challenge. In this study, we assess the capacity of a functionally important plant species from south-eastern Australia (Banksia marginata, Proteaceae) to adapt to water-limited environments. A water-manipulated common garden experiment was used to test for phenotypic plasticity and genetic adaptation in seedlings sourced from seven provenances of contrasting climate-origins (wet and dry). We found evidence of local adaptation relating to plant growth investment strategies with populations from drier climate-origins showing greater growth in well-watered conditions. The results also revealed that environment drives variation in physiological (stomatal conductance, predawn and midday water potential) and structural traits (wood density, leaf dry matter content). Finally, these results indicate that traits are coordinated to optimize conservation of water under water-limited conditions and that trait coordination (phenotypic integration) does not constrain phenotypic plasticity. Overall, this study provides evidence for adaptive capacity relating to drought conditions in B. marginata, and a basis for predicting the response to climate change in this functionally important plant species.https://www.frontiersin.org/articles/10.3389/fpls.2023.1150116/fulladaptive capacityBanksiafunctional traitslocal adaptationphysiologyplasticity |
| spellingShingle | Osazee O. Oyanoghafo Osazee O. Oyanoghafo Adam D. Miller Madeline Toomey Collin W. Ahrens Collin W. Ahrens David T. Tissue David T. Tissue Paul D. Rymer Contributions of phenotypic integration, plasticity and genetic adaptation to adaptive capacity relating to drought in Banksia marginata (Proteaceae) Frontiers in Plant Science adaptive capacity Banksia functional traits local adaptation physiology plasticity |
| title | Contributions of phenotypic integration, plasticity and genetic adaptation to adaptive capacity relating to drought in Banksia marginata (Proteaceae) |
| title_full | Contributions of phenotypic integration, plasticity and genetic adaptation to adaptive capacity relating to drought in Banksia marginata (Proteaceae) |
| title_fullStr | Contributions of phenotypic integration, plasticity and genetic adaptation to adaptive capacity relating to drought in Banksia marginata (Proteaceae) |
| title_full_unstemmed | Contributions of phenotypic integration, plasticity and genetic adaptation to adaptive capacity relating to drought in Banksia marginata (Proteaceae) |
| title_short | Contributions of phenotypic integration, plasticity and genetic adaptation to adaptive capacity relating to drought in Banksia marginata (Proteaceae) |
| title_sort | contributions of phenotypic integration plasticity and genetic adaptation to adaptive capacity relating to drought in banksia marginata proteaceae |
| topic | adaptive capacity Banksia functional traits local adaptation physiology plasticity |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2023.1150116/full |
| work_keys_str_mv | AT osazeeooyanoghafo contributionsofphenotypicintegrationplasticityandgeneticadaptationtoadaptivecapacityrelatingtodroughtinbanksiamarginataproteaceae AT osazeeooyanoghafo contributionsofphenotypicintegrationplasticityandgeneticadaptationtoadaptivecapacityrelatingtodroughtinbanksiamarginataproteaceae AT adamdmiller contributionsofphenotypicintegrationplasticityandgeneticadaptationtoadaptivecapacityrelatingtodroughtinbanksiamarginataproteaceae AT madelinetoomey contributionsofphenotypicintegrationplasticityandgeneticadaptationtoadaptivecapacityrelatingtodroughtinbanksiamarginataproteaceae AT collinwahrens contributionsofphenotypicintegrationplasticityandgeneticadaptationtoadaptivecapacityrelatingtodroughtinbanksiamarginataproteaceae AT collinwahrens contributionsofphenotypicintegrationplasticityandgeneticadaptationtoadaptivecapacityrelatingtodroughtinbanksiamarginataproteaceae AT davidttissue contributionsofphenotypicintegrationplasticityandgeneticadaptationtoadaptivecapacityrelatingtodroughtinbanksiamarginataproteaceae AT davidttissue contributionsofphenotypicintegrationplasticityandgeneticadaptationtoadaptivecapacityrelatingtodroughtinbanksiamarginataproteaceae AT pauldrymer contributionsofphenotypicintegrationplasticityandgeneticadaptationtoadaptivecapacityrelatingtodroughtinbanksiamarginataproteaceae |