Fertilization and seasonality influence on the photochemical performance of tree legumes in forest plantation for area recovery in the Amazon

Autor: Karen Cristina Pires da Costa, Roberto Kirmayr Jaquetti, Jair Max Furtunato Maia, Henrique E. M. Nascimento, José Francisco de Carvalho Gonçalves, Flávia Camila Schimpl
Rok vydání: 2020
Předmět:
0106 biological sciences
Chlorophyll
Plant Science
Forests
Photochemistry
01 natural sciences
Biochemistry
Physical Chemistry
Forest restoration
Trees
chemistry.chemical_compound
Photosynthesis
Chlorophyll fluorescence
Flowering Plants
0303 health sciences
Biomass (ecology)
Multidisciplinary
biology
Ecology
Plant Biochemistry
Acacia
Eukaryota
Fabaceae
Agriculture
Plants
Terrestrial Environments
Zinc
Chemistry
Physical Sciences
Medicine
Engineering and Technology
Seasons
Agrochemicals
Research Article
Chlorophyll a
Conservation of Natural Resources
Science
Equipment
Ecosystems
03 medical and health sciences
Nitrogen Fixation
Fertilizers
030304 developmental biology
Communication Equipment
Ecology and Environmental Sciences
Organisms
Biology and Life Sciences
Interspecific competition
biology.organism_classification
Dipteryx
chemistry
Fertilization
Antennas
010606 plant biology & botany
Senna reticulata
Developmental Biology
Zdroj: PLoS ONE
PLoS ONE, Vol 16, Iss 5, p e0243118 (2021)
ISSN: 1932-6203
Popis: N-fixing leguminous species can reach atmospheric dinitrogen gas (N2), having an advantage under N-limited degraded environments. These N-fixers are constantly used as facilitative species. Chlorophyll a fluorescence (ChF) acknowledges how different species take up and use light energy during photosynthesis. These techniques assess stress and performance responses to photosynthesis and are used for the selection of species with potential for reforestation. Six Fabaceae species were selected for this study: three nonfixing species (Cenostigma tocantinum, Senna reticulata and Dipteryx odorata) and three N-fixing species (Clitoria fairchildiana, Inga edulis and Acacia spp.). Variations in chlorophyll fluorescence under high vs. low water and nutrient conditions were studied. Multivariate analysis was performed to detect the effects of seasonality and fertilization on dark-adapted ChF two years after the experiment was established. The correlation among ChF variables and growth, photosynthesis and foliar nutrient concentrations was evaluated. Under high water- and nutrient-availability conditions, plants exhibited an enhanced performance index on absorption basis values correlated with electron transport fluxes. Under drought and nutrient-poor conditions, most species exhibit increased energy dissipation as photoprotection. High interspecific variation was found; therefore, species-specific responses should be considered in future ChF studies. Corroborating the ability to colonize high-light environments, N-fixers showed an increased performance index correlated with electron transport and Zn and N foliar concentrations. Negative correlations were found between photosynthesis and trapped fluxes. Diameter growth was positively correlated with electron transport fluxes. Given the different responses among species, ChF is an effective technique to screen for seasonality, fertilization and species effects and should be considered for use during forest restoration. Finally, the addition of fertilization treatments may facilitate tropical forest restoration due to the importance of nutrients in physiological processes. N-fixers showed high photochemical performance and tolerance to abiotic stress in degraded areas and therefore should be included to support ecosystem biomass restoration.
Databáze: OpenAIRE
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