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Coordinated adjustments of carbohydrates and growth of tree legumes under different fertilization regimes in degraded areas in Amazonia

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Abstract

Soil fertility management and N-fixing species can support the ecosystem-level restoration of disrupted biogeochemical cycles in tropical degraded environments. However, the effectiveness of N-fixers during tropical forest restoration remains unclear. We hypothesized that tree legumes adjust growth, nonstructural carbohydrate allocation and foliar nutrients under different fertilization regimes. We compared the following six tree legume species: three native nonfixers (Cenostigma, Senna and Dipteryx), two native N-fixers (Clitoria and Inga) and an introduced N-fixer (Acacia). Twenty-four months after the experiment was established, fertilized plants increased growth rates and starch allocation to leaves, whereas unfertilized plants primarily increased their biomass and starch allocation to roots. The greater tolerance to nutrient deficiency of the Acacia than other native tree legumes was due to Acacia’s ability to adjust carbohydrate pools. N-fixers adjusted the shoot-to-root ratio and soluble sugar allocation to leaves, increasing biomass growth. The three N-fixing species were especially suitable for restoration because Acacia had tolerance of nutrient deficiencies, Clitoria and Inga had fast growth and biomass production. Hence, fertilization management and N-fixing species may have a considerable impact on C stocks in different plant compartments. Overall non-structural carbohydrate adjustments influence growth responses of species, especially the ratio between leaf and root tissues. Our findings suggest that this aspect should be considered as a tree species selection criterion for forest restoration programs in the Amazon region.

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Availability of data and material

Jaquetti RK, Gonçalves JFC (2021) Data on the effects of fertilization on growth rates, biomass allocation, carbohydrates and nutrients of nitrogen-fixing and non-nitrogen-fixing tree legumes during tropical forest restoration. BMC Res Notes 14:153. (https://doi.org/10.1186/s13104-021-05552-5). [data files] Jaquetti RK (2020) Growth, biomass allocation, carbohydrate concentrations, nutrient concentrations, soil data and precipitation data Jaquetti and Gonçalves 2021. Figshare. Available at https://doi.org/10.6084/m9.figshare.12869960.v6.

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Acknowledgements

The authors are grateful to the Balbina Hydropower Dam for allowing the collection of experimental data and to the Coordination for the Improvement of Higher Education Personnel (CAPES, Brazil) and National Council for Scientific and Technological Development (CNPq-Brazil) for financial support. J.F.C. Gonçalves is a researcher with the Brazilian Council for Research and Development (CNPq, Brazil). The authors are grateful to the reviewers for their important comments, and the authors would also like to acknowledge American Journal Experts for revising the English manuscript.

Funding

This work was financially supported by the Coordination for the Improvement of Higher-Level Personnel (CAPES, Brazil, Project Pro-Amazonia Nº52 AUXPE 3390/2013), Amazonas State Research Support Foundation (FAPEAM, Brazil, 024/2014) and by the National Council for Scientific and Technological Development (CNPq, Brazil, Universal 480233/2011-0). José F. C. Gonçalves acknowledges the fellowship provided by CNPq (308373/2019-7).

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JFCG and RKJ conceived and designed the experiments; RKJ performed the experimental collection and assembled the data; HEMN and RKJ analyzed and interpreted the data; and RKJ, JFCG, LZ, BR and HEMN wrote and revised the paper.

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Correspondence to José Francisco de Carvalho Gonçalves.

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The authors declare that they have no conflicts of interest.

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Jaquetti, R.K., Nascimento, H.E.M., Zotarelli, L. et al. Coordinated adjustments of carbohydrates and growth of tree legumes under different fertilization regimes in degraded areas in Amazonia. New Forests 53, 221–240 (2022). https://doi.org/10.1007/s11056-021-09853-2

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  • DOI: https://doi.org/10.1007/s11056-021-09853-2

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