Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad de Costa Rica
2023
|
| Subjects: | |
| Online Access: | https://www.redalyc.org/articulo.oa?id=44975700010 https://www.redalyc.org/journal/449/44975700010/ https://www.redalyc.org/journal/449/44975700010/html/ https://www.redalyc.org/journal/449/44975700010/44975700010.epub https://www.redalyc.org/journal/449/44975700010/movil |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866815519407996928 |
|---|---|
| author | Bárbara Godinho-Pereira |
| author_facet | Bárbara Godinho-Pereira |
| contents | Effect of seasonality on the leaf phenology and physiology of Byrsonima species (Malpighiaceae) Bárbara Godinho-Pereira Ana-Paula de-Faria Vinícius Coelho-Kuster Ana-Silvia Franco-Pinheiro-Moreira Biología cerrado drought woody species leaf phenology photosynthesis Introduction: Defined seasonality in savanna species can stimulate physiological responses that maximize photosynthetic metabolism and productivity. However, those physiological responses are also linked to the phenological status of the whole plant, including leaf phenophases. Objective: To study how physiological traits influence phenophase timing among congeneric and co-occurring savanna species. Methods: We evaluated the leaf phenology and physiological traits of populations of Byrsonima intermedia, B. coccolobifolia, and B. verbascifolia. Physiological measurements were performed at the onset of the dry and rainy seasons and again late in the season.Results: B. intermedia and B. coccolobifolia were classified as brevideciduous and B. verbascifolia as evergreen. The maximum quantum yield for B. intermedia and B. coccolobifolia were lowest during the dry season. At the onset of the dry period, the highest chloroplastidic pigment levels were observed, which decreased as the season advanced, total chlorophyll/carotenoid ratios were lowest, and carotenoid contents were highest. We detected low starch content values at the start of the rainy season, coinciding with the resumption of plant growth. Two months into this season, the leaves were at their peak structural and functional maturity, with high water-soluble polysaccharide values and photosynthetic rates, and were storing large amounts of starch. Conclusions: Physiological and leaf phenological strategies of the Byrsonima species were related to drought resistance and acclimatization to the seasonality of savanna water resources. The oscillations of the parameters quantified during the year indicated a strong relationship with water seasonality and with the phenological status of the leaves. 2023 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44975700010 https://www.redalyc.org/journal/449/44975700010/ https://www.redalyc.org/journal/449/44975700010/html/ https://www.redalyc.org/journal/449/44975700010/44975700010.epub https://www.redalyc.org/journal/449/44975700010/movil 10.15517/rev.biol.trop..v71i1.50344 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.71 |
| format | Artículo científico |
| id | redalyc_44975700010 |
| language | en |
| publishDate | 2023 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Effect of seasonality on the leaf phenology and physiology of Byrsonima species (Malpighiaceae) Bárbara Godinho-Pereira Biología cerrado drought woody species leaf phenology photosynthesis Effect of seasonality on the leaf phenology and physiology of Byrsonima species (Malpighiaceae) Bárbara Godinho-Pereira Ana-Paula de-Faria Vinícius Coelho-Kuster Ana-Silvia Franco-Pinheiro-Moreira Biología cerrado drought woody species leaf phenology photosynthesis Introduction: Defined seasonality in savanna species can stimulate physiological responses that maximize photosynthetic metabolism and productivity. However, those physiological responses are also linked to the phenological status of the whole plant, including leaf phenophases. Objective: To study how physiological traits influence phenophase timing among congeneric and co-occurring savanna species. Methods: We evaluated the leaf phenology and physiological traits of populations of Byrsonima intermedia, B. coccolobifolia, and B. verbascifolia. Physiological measurements were performed at the onset of the dry and rainy seasons and again late in the season.Results: B. intermedia and B. coccolobifolia were classified as brevideciduous and B. verbascifolia as evergreen. The maximum quantum yield for B. intermedia and B. coccolobifolia were lowest during the dry season. At the onset of the dry period, the highest chloroplastidic pigment levels were observed, which decreased as the season advanced, total chlorophyll/carotenoid ratios were lowest, and carotenoid contents were highest. We detected low starch content values at the start of the rainy season, coinciding with the resumption of plant growth. Two months into this season, the leaves were at their peak structural and functional maturity, with high water-soluble polysaccharide values and photosynthetic rates, and were storing large amounts of starch. Conclusions: Physiological and leaf phenological strategies of the Byrsonima species were related to drought resistance and acclimatization to the seasonality of savanna water resources. The oscillations of the parameters quantified during the year indicated a strong relationship with water seasonality and with the phenological status of the leaves. 2023 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44975700010 https://www.redalyc.org/journal/449/44975700010/ https://www.redalyc.org/journal/449/44975700010/html/ https://www.redalyc.org/journal/449/44975700010/44975700010.epub https://www.redalyc.org/journal/449/44975700010/movil 10.15517/rev.biol.trop..v71i1.50344 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.71 |
| title | Effect of seasonality on the leaf phenology and physiology of Byrsonima species (Malpighiaceae) |
| topic | Biología cerrado drought woody species leaf phenology photosynthesis |
| url | https://www.redalyc.org/articulo.oa?id=44975700010 https://www.redalyc.org/journal/449/44975700010/ https://www.redalyc.org/journal/449/44975700010/html/ https://www.redalyc.org/journal/449/44975700010/44975700010.epub https://www.redalyc.org/journal/449/44975700010/movil |