Non-structural carbohydrates mediate seasonal water stress across Amazon forests
Non-structural carbohydrates (NSC) are major substrates for plant metabolism and have been implicated in mediating drought-induced tree mortality. Despite their significance, NSC dynamics in tropical forests remain little studied. We present leaf and branch NSC data for 82 Amazon canopy tree species...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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Springer Nature
2021
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| _version_ | 1826311501441400832 |
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| author | Signori-Müller, C Oliveira, RS Barros, FDV Tavares, JV Gilpin, M Diniz, FC Zevallos, MJM Yupayccana, CAS Acosta, M Bacca, J Chino, RSC Cuellar, GMA Cumapa, ERM Martinez, F Mullisaca, FMP Nina, A Sanchez, JMB da Silva, LF Tello, L Tintaya, JS Ugarteche, MTM Baker, TR Bittencourt, PRL Borma, LS Brum, M Castro, W Coronado, ENH Cosio, EG Feldpausch, TR Fonseca, LDM Gloor, E Llampazo, GF Malhi, Y Mendoza, AM Moscoso, VC Araujo-Murakami, A Phillips, OL Salinas, N Silveira, M Talbot, J Vasquez, R Mencuccini, M Galbraith, D |
| author_facet | Signori-Müller, C Oliveira, RS Barros, FDV Tavares, JV Gilpin, M Diniz, FC Zevallos, MJM Yupayccana, CAS Acosta, M Bacca, J Chino, RSC Cuellar, GMA Cumapa, ERM Martinez, F Mullisaca, FMP Nina, A Sanchez, JMB da Silva, LF Tello, L Tintaya, JS Ugarteche, MTM Baker, TR Bittencourt, PRL Borma, LS Brum, M Castro, W Coronado, ENH Cosio, EG Feldpausch, TR Fonseca, LDM Gloor, E Llampazo, GF Malhi, Y Mendoza, AM Moscoso, VC Araujo-Murakami, A Phillips, OL Salinas, N Silveira, M Talbot, J Vasquez, R Mencuccini, M Galbraith, D |
| author_sort | Signori-Müller, C |
| collection | OXFORD |
| description | Non-structural carbohydrates (NSC) are major substrates for plant metabolism and have been implicated in mediating drought-induced tree mortality. Despite their significance, NSC dynamics in tropical forests remain little studied. We present leaf and branch NSC data for 82 Amazon canopy tree species in six sites spanning a broad precipitation gradient. During the wet season, total NSC (NSCT) concentrations in both organs were remarkably similar across communities. However, NSCT and its soluble sugar (SS) and starch components varied much more across sites during the dry season. Notably, the proportion of leaf NSCT in the form of SS (SS:NSCT) increased greatly in the dry season in almost all species in the driest sites, implying an important role of SS in mediating water stress in these sites. This adjustment of leaf NSC balance was not observed in tree species less-adapted to water deficit, even under exceptionally dry conditions. Thus, leaf carbon metabolism may help to explain floristic sorting across water availability gradients in Amazonia and enable better prediction of forest responses to future climate change.
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| first_indexed | 2024-03-07T08:10:46Z |
| format | Journal article |
| id | oxford-uuid:3717edca-af0b-470b-858b-ec091b2a5e99 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:10:46Z |
| publishDate | 2021 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | oxford-uuid:3717edca-af0b-470b-858b-ec091b2a5e992023-11-27T16:00:21ZNon-structural carbohydrates mediate seasonal water stress across Amazon forestsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3717edca-af0b-470b-858b-ec091b2a5e99EnglishSymplectic ElementsSpringer Nature2021Signori-Müller, COliveira, RSBarros, FDVTavares, JVGilpin, MDiniz, FCZevallos, MJMYupayccana, CASAcosta, MBacca, JChino, RSCCuellar, GMACumapa, ERMMartinez, FMullisaca, FMPNina, ASanchez, JMBda Silva, LFTello, LTintaya, JSUgarteche, MTMBaker, TRBittencourt, PRLBorma, LSBrum, MCastro, WCoronado, ENHCosio, EGFeldpausch, TRFonseca, LDMGloor, ELlampazo, GFMalhi, YMendoza, AMMoscoso, VCAraujo-Murakami, APhillips, OLSalinas, NSilveira, MTalbot, JVasquez, RMencuccini, MGalbraith, DNon-structural carbohydrates (NSC) are major substrates for plant metabolism and have been implicated in mediating drought-induced tree mortality. Despite their significance, NSC dynamics in tropical forests remain little studied. We present leaf and branch NSC data for 82 Amazon canopy tree species in six sites spanning a broad precipitation gradient. During the wet season, total NSC (NSCT) concentrations in both organs were remarkably similar across communities. However, NSCT and its soluble sugar (SS) and starch components varied much more across sites during the dry season. Notably, the proportion of leaf NSCT in the form of SS (SS:NSCT) increased greatly in the dry season in almost all species in the driest sites, implying an important role of SS in mediating water stress in these sites. This adjustment of leaf NSC balance was not observed in tree species less-adapted to water deficit, even under exceptionally dry conditions. Thus, leaf carbon metabolism may help to explain floristic sorting across water availability gradients in Amazonia and enable better prediction of forest responses to future climate change. |
| spellingShingle | Signori-Müller, C Oliveira, RS Barros, FDV Tavares, JV Gilpin, M Diniz, FC Zevallos, MJM Yupayccana, CAS Acosta, M Bacca, J Chino, RSC Cuellar, GMA Cumapa, ERM Martinez, F Mullisaca, FMP Nina, A Sanchez, JMB da Silva, LF Tello, L Tintaya, JS Ugarteche, MTM Baker, TR Bittencourt, PRL Borma, LS Brum, M Castro, W Coronado, ENH Cosio, EG Feldpausch, TR Fonseca, LDM Gloor, E Llampazo, GF Malhi, Y Mendoza, AM Moscoso, VC Araujo-Murakami, A Phillips, OL Salinas, N Silveira, M Talbot, J Vasquez, R Mencuccini, M Galbraith, D Non-structural carbohydrates mediate seasonal water stress across Amazon forests |
| title | Non-structural carbohydrates mediate seasonal water stress across Amazon forests |
| title_full | Non-structural carbohydrates mediate seasonal water stress across Amazon forests |
| title_fullStr | Non-structural carbohydrates mediate seasonal water stress across Amazon forests |
| title_full_unstemmed | Non-structural carbohydrates mediate seasonal water stress across Amazon forests |
| title_short | Non-structural carbohydrates mediate seasonal water stress across Amazon forests |
| title_sort | non structural carbohydrates mediate seasonal water stress across amazon forests |
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