Phosphorus Use Efficiency of Leafy Brassica sp. Grown in Three Contrasting Soils: Growth, Enzyme Activity and Phosphorus Fractionation

Scientific paper - Original scientific paper

• Author: Branimir Urlić
• Author: Gvozden Dumičić
• Author: Tomislav Radić
• Author: Smiljana Goreta Ban
• Author: Marija Romić
• Author's institution: Institute for Adriatic Crops and Karst Reclamation
• Author's institution: Institute of Agriculture and Tourism
• Author's institution: University of Zagreb; Faculty of Agriculture
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract (english)

Plant adaptations to low soil phosphorus (P) availability have been intensively studied in Brassica sp. in an attempt to identify the mechanisms involved in P uptake and utilization. The present pot experiment was conducted to evaluate the relationships between plant shoot and root growth, P uptake and use efficiency parameters, and P fractions and enzyme activity, in two species grown in three soil types. The aim of this study was to determine whether adaptation mechanisms are soil-dependent.... More Two kale species were grown in soils typical for coastal Croatia (terra rossa, rendzina, and fluvisol) with low P availability. Plants grown in fluvisol had the highest shoot biomass and accumulated most P, whereas plants developed the longest roots in terra rossa. Phosphatase activity differed among soils. P use efficiency differed among soils and species. Genotype IJK 17 showed better adaptation to low P availability, which was related to better uptake efficiency. In general, soils differed in inorganic and organic P fractions in rhizosphere soil, but no difference between genotypes was found. The activities of alkaline phosphatase and phosphodiesterase were negatively correlated with most organic P fractions, suggesting their function in the mineralization of soil organic P. Kale species activate different mechanisms of P uptake and utilization when grown in contrasting soil types, suggesting that specific responses to the soil type were more important than the genotypic difference. Less

• Keywords (english): kale; soil P fractions; phosphatase; P uptake and utilization efficiency
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Plants
• Numbering: vol. 12, no. 6, 1295
• e-ISSN: 2223-7747
• DOI: https://doi.org/10.3390/plants12061295
• URN:NBN: urn:nbn:hr:204:815129
• Publication: 2023-03-13
• Document URL: https://www.mdpi.com/2223-7747/12/6/1295
• Type of resource: Text
• Access conditions: Open access
• Created on: 2025-03-12 09:49:06