Autor(es)

de Oliveira, Eduardo A. Dias ; Glass, Nicholas ; Yun, Kyungdahm ; Habermann, Eduardo ; Matamala, Roser ; Zare, Alina ; Kim, Soo-Hyung ; Gonzalez-Meler, Miquel

• Tipo de documento: Artigo Científico
• Fonte: PLANT AND SOIL; v. N/A, p. 12-pg., 2025-01-17.

Resumo

AimsUnderstanding the influence of different forms of phosphorus (P) over the different root traits and how those traits are related to increasing the efficiency of nutrient acquisition strategies.MethodsInvestigation of switchgrass (Panicum virgatum L.) root morphology responses to inorganic P (Pi) soluble (Potassium-P), insoluble (Aluminum-P), and organic P (Po) (Inositol Hexa-Phosphate, IHex-P) in rhizoboxes. Roots were traced over the root box and scanned using WinRhizoTM. The CRootbox model was employed to simulate root growth.ResultsSignificant plasticity observed under IHex-P treatment, with a 46% increase in root branching, leading to a 74% rise in total root length and a 65% increase in root surface area compared to inorganic P forms. IHex-P resulted in a 73% higher root biomass than Aluminum-P and a 26% increase compared to Potassium-P. Most of the differences were attributed to the elongation of root branches.ConclusionsThe study emphasizes the dynamic nature of switchgrass root architecture and morphology in response to varying P forms in the soil. The absence of Pi in the soil triggered increased plasticity in root traits, facilitating root access to Po and uptake of P. These findings offer valuable insights into the adaptive mechanisms of perennial plants, with significant implications for optimizing nutrient acquisition strategies in both agricultural and natural ecosystems. (AU)

• Processo FAPESP: 19/01404-4 - Impacto de fatores abióticos na dinâmica de isótopos estáveis de carbono, nitrogênio e oxigênio em quatro espécies forrageiras
• Beneficiário: Eduardo Habermann
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 16/09742-8 - Relações hídricas, trocas gasosas, anatomia foliar e análises termográficas de duas espécies forrageiras sob aquecimento e deficiência hídrica em condições de campo
• Beneficiário: Eduardo Habermann
• Modalidade de apoio: Bolsas no Brasil - Doutorado