Coordination between water-transport efficiency and photosynthetic capacity in canopy tree species at different growth irradiances
Plasticity in hydraulic architecture of five dominant Atlantic forest species differing in light requirements and growth rates was evaluated in saplings grown at different irradiances to determine if hydraulic architecture changes in coordination with photosynthetic capacity. Saplings were grown in...
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todo:paper_0829318X_v28_n1_p85_Campanello2023-10-03T15:40:03Z Coordination between water-transport efficiency and photosynthetic capacity in canopy tree species at different growth irradiances Campanello, P.I. Gatti, M.G. Goldstein, G. Atlantic forest High-light-requiring trees Hydraulic conductivity Shade-tolerant trees Water-use efficiency canopy growth rate growth regulator hydraulic conductivity irradiance light effect photosynthesis plasticity water uptake water use efficiency Balfourodendron riedelianum Cedrela Cedrela fissilis Cordia Cordia trichotoma Lonchocarpus Patagonula americana Plasticity in hydraulic architecture of five dominant Atlantic forest species differing in light requirements and growth rates was evaluated in saplings grown at different irradiances to determine if hydraulic architecture changes in coordination with photosynthetic capacity. Saplings were grown in shade-houses at 10, 30, 45 and 65% of full solar irradiance for 4 months. In four of the five species, maximum relative growth rates were observed at intermediate irradiances (30 and 40% of full sun). Slow-growing species had lower maximum electron transport rates (ETRmax) than fast-growing species. A positive correlation between ETRmax and maximum leaf hydraulic conductivity (KL) was found across species, suggesting that species-specific stem hydraulic capacity and photosynthetic capacity were linked. Species with relatively high growth rates, such as Cedrela fissilis Vell., Patagonula americana L. and Cordia trichotoma (Vell.) Arrab. Ex Stend, exhibited increased KL and specific hydraulic conductivity (K S) with increased growth irradiance. In contrast, KS and KL did not vary with irradiance in the slower-growing and more shade-tolerant species Balfourodendron riedelianum (Engl.) Engl. and Lonchocarpus leucanthus Burkart, despite a relatively large irradiance-induced variation in ETRmax. A correlation between KS and ETR max was observed in fast-growing species in different light regimes, suggesting that they are capable of plastic changes in hydraulic architecture and increased water-transport efficiency in response to changes in light availability resulting from the creation of canopy gaps, which makes them more competitive in gaps and open habitats. © 2008 Heron Publishing. Fil:Campanello, P.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gatti, M.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Goldstein, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0829318X_v28_n1_p85_Campanello |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Atlantic forest High-light-requiring trees Hydraulic conductivity Shade-tolerant trees Water-use efficiency canopy growth rate growth regulator hydraulic conductivity irradiance light effect photosynthesis plasticity water uptake water use efficiency Balfourodendron riedelianum Cedrela Cedrela fissilis Cordia Cordia trichotoma Lonchocarpus Patagonula americana |
| spellingShingle |
Atlantic forest High-light-requiring trees Hydraulic conductivity Shade-tolerant trees Water-use efficiency canopy growth rate growth regulator hydraulic conductivity irradiance light effect photosynthesis plasticity water uptake water use efficiency Balfourodendron riedelianum Cedrela Cedrela fissilis Cordia Cordia trichotoma Lonchocarpus Patagonula americana Campanello, P.I. Gatti, M.G. Goldstein, G. Coordination between water-transport efficiency and photosynthetic capacity in canopy tree species at different growth irradiances |
| topic_facet |
Atlantic forest High-light-requiring trees Hydraulic conductivity Shade-tolerant trees Water-use efficiency canopy growth rate growth regulator hydraulic conductivity irradiance light effect photosynthesis plasticity water uptake water use efficiency Balfourodendron riedelianum Cedrela Cedrela fissilis Cordia Cordia trichotoma Lonchocarpus Patagonula americana |
| description |
Plasticity in hydraulic architecture of five dominant Atlantic forest species differing in light requirements and growth rates was evaluated in saplings grown at different irradiances to determine if hydraulic architecture changes in coordination with photosynthetic capacity. Saplings were grown in shade-houses at 10, 30, 45 and 65% of full solar irradiance for 4 months. In four of the five species, maximum relative growth rates were observed at intermediate irradiances (30 and 40% of full sun). Slow-growing species had lower maximum electron transport rates (ETRmax) than fast-growing species. A positive correlation between ETRmax and maximum leaf hydraulic conductivity (KL) was found across species, suggesting that species-specific stem hydraulic capacity and photosynthetic capacity were linked. Species with relatively high growth rates, such as Cedrela fissilis Vell., Patagonula americana L. and Cordia trichotoma (Vell.) Arrab. Ex Stend, exhibited increased KL and specific hydraulic conductivity (K S) with increased growth irradiance. In contrast, KS and KL did not vary with irradiance in the slower-growing and more shade-tolerant species Balfourodendron riedelianum (Engl.) Engl. and Lonchocarpus leucanthus Burkart, despite a relatively large irradiance-induced variation in ETRmax. A correlation between KS and ETR max was observed in fast-growing species in different light regimes, suggesting that they are capable of plastic changes in hydraulic architecture and increased water-transport efficiency in response to changes in light availability resulting from the creation of canopy gaps, which makes them more competitive in gaps and open habitats. © 2008 Heron Publishing. |
| format |
JOUR |
| author |
Campanello, P.I. Gatti, M.G. Goldstein, G. |
| author_facet |
Campanello, P.I. Gatti, M.G. Goldstein, G. |
| author_sort |
Campanello, P.I. |
| title |
Coordination between water-transport efficiency and photosynthetic capacity in canopy tree species at different growth irradiances |
| title_short |
Coordination between water-transport efficiency and photosynthetic capacity in canopy tree species at different growth irradiances |
| title_full |
Coordination between water-transport efficiency and photosynthetic capacity in canopy tree species at different growth irradiances |
| title_fullStr |
Coordination between water-transport efficiency and photosynthetic capacity in canopy tree species at different growth irradiances |
| title_full_unstemmed |
Coordination between water-transport efficiency and photosynthetic capacity in canopy tree species at different growth irradiances |
| title_sort |
coordination between water-transport efficiency and photosynthetic capacity in canopy tree species at different growth irradiances |
| url |
http://hdl.handle.net/20.500.12110/paper_0829318X_v28_n1_p85_Campanello |
| work_keys_str_mv |
AT campanellopi coordinationbetweenwatertransportefficiencyandphotosyntheticcapacityincanopytreespeciesatdifferentgrowthirradiances AT gattimg coordinationbetweenwatertransportefficiencyandphotosyntheticcapacityincanopytreespeciesatdifferentgrowthirradiances AT goldsteing coordinationbetweenwatertransportefficiencyandphotosyntheticcapacityincanopytreespeciesatdifferentgrowthirradiances |
| _version_ |
1807316636051439616 |