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@Article{LugliAACCFMMOQRSVH:2019:MuPhAc,
               author = "Lugli, Laynara F. and Andersen, Kelly M. and Arag{\~a}o, Luiz 
                         Eduardo Oliveira e Cruz de and Cordeiro, Amanda L. and Cunha, 
                         Hellen F. V. and Fuchslueger, Lucia and Meir, Patrick and Mercado, 
                         Lina M. and Oblitas, Erick and Quesada, Carlos A. and Rosa, 
                         Jessica S. and Schaap, Karst J. and Valverde-Barrantes, Oscar and 
                         Hartley, Iain P.",
          affiliation = "{University of Exeter} and {University of Exeter} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas da Amaz{\^o}ni (INPA)} and {Instituto Nacional de 
                         Pesquisas da Amaz{\^o}ni (INPA)} and {Instituto Nacional de 
                         Pesquisas da Amaz{\^o}ni (INPA)} and {Australian National 
                         University} and {Centre for Ecology and Hydrology} and {Instituto 
                         Nacional de Pesquisas da Amaz{\^o}ni (INPA)} and {Instituto 
                         Nacional de Pesquisas da Amaz{\^o}ni (INPA)} and {Instituto 
                         Nacional de Pesquisas da Amaz{\^o}ni (INPA)} and {Instituto 
                         Nacional de Pesquisas da Amaz{\^o}ni (INPA)} and {Instituto 
                         Nacional de Pesquisas da Amaz{\^o}ni (INPA)} and {Florida 
                         International University}",
                title = "Multiple phosphorus acquisition strategies adopted by fine roots 
                         in low-fertility soils in Central Amazonia",
              journal = "Plant And Soil",
                 year = "2019",
               volume = "00",
                pages = "1",
             keywords = "Amazon . Arbuscular mycorrhizas. Lowland tropical forest . Root 
                         phosphatase activity. Phosphorus limitation . Root morphology.",
             abstract = "Background and aims Ancient Amazon soils are characterised by low 
                         concentrations of soil phosphorus (P). Therefore, it is 
                         hypothesised that plants may invest a substantial proportion of 
                         their resources belowground to adjust their P-uptake strategies, 
                         including root morphological, physiological (phosphatase enzyme 
                         activities) and biotic (arbuscular mycorrhizal (AM) associations) 
                         adaptations. Since these strategies are energy demanding, we 
                         hypothesise that trade-offs between morphological traits and root 
                         phosphatase exudation and symbiotic associations would occur. 
                         Specifically, we expected that plants which invest in finer roots, 
                         and therefore have greater ability to explore large soil volumes, 
                         would have a high investment in physiological adaptations such as 
                         enhanced phosphatase production. In contrast, we expected that 
                         plants with predominantly thicker roots would invest more in 
                         symbiotic associations, in which carbon is traded for P acquired 
                         from AM fungal communities. Methods We collected absorptive roots 
                         (<2 mm diameter) from a lowland Central Amazon forest near Manaus, 
                         Brazil. We measured fine root diameter, specific root length 
                         (SRL), specific root area (SRA), root tissue density (RTD), root 
                         phosphatase activity (APase) and arbuscular mycorrhizal (AM) fungi 
                         colonisation. Results Root morphological traits were related to 
                         APase activity, with higher APase activity in roots with higher 
                         SRL and SRA but lower RTD. However, the degree of AM colonisation 
                         was not related to any measured root morphological trait. 
                         Conclusions Fine absorptive roots likely benefit from having low 
                         RTD, high SRL, SRA and APase exudation to acquire P efficiently. 
                         However, because AM colonisation was not related to root 
                         morphology, we suggest that investment in multiple P-uptake 
                         strategies is required for maintaining productivity in Central 
                         Amazon forests.",
                  doi = "10.1007/s11104-019-03963-9",
                  url = "http://dx.doi.org/10.1007/s11104-019-03963-9",
                 issn = "0032-079X",
                label = "lattes: 5174466549126882 3 LugliAACCFMMOQRSVH:2019:MuPhAc",
             language = "en",
           targetfile = "10.1007_s11104-019-03963-9.pdf",
        urlaccessdate = "04 dez. 2020"
}


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