Carbon-phosphorus cycle models overestimate CO ₂ enrichment response in a mature Eucalyptus forest

Science Advances, Год журнала: 2024, Номер 10(27)

Опубликована: Июль 3, 2024

The importance of phosphorus (P) in regulating ecosystem responses to climate change has fostered P-cycle implementation land surface models, but their CO

Язык: Английский

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The crop mined phosphorus nutrition via modifying root traits and rhizosphere micro‐food web to meet the increased growth demand under elevated CO₂

iMeta, Год журнала: 2024, Номер 3(6)

Опубликована: Окт. 25, 2024

Elevated CO

Язык: Английский

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Rhizosphere Acidification Determines Phosphorus Availability in Calcareous Soil and Influences Faba Bean (Vicia faba) Tolerance to P Deficiency

Sustainability, Год журнала: 2023, Номер 15(7), С. 6203 - 6203

Опубликована: Апрель 4, 2023

Calcareous soils are known for their alkaline pH-promoting insoluble forms of certain nutrients, including phosphorus (P). Rhizosphere acidification is one the main physiological mechanisms mobilization by plants. However, specific and genotypic differences in response to P deficiency often observed, giving some genotypes particular tolerance abilities. This genetic potential gives us a new opportunity colonize unused lands, improve yield problematic soils, install sustainable agrosystems. To this end, potted experiment was conducted on three faba bean (Seville, SEV; Aguadulce, AGUA; Tunisian, TUN) cultivated calcareous soil (CS), as compared fertile (FS). Measurements made plant growth, SPAD index, photosynthesis, distribution, rhizosphere acidification, related interrelationships. induced symptoms deficiency, reduced concentration decreased net growth. significantly stimulated CS. activity determines bean. The genotype TUN more adapted calcareous-induced than AGUA SEV increasing activity, decreasing pH 0.6 units rhizosphere, having higher biomass production, remobilization, accumulation. key functional traits (plant chlorophyll biosynthesis, photosynthesis) strictly dependent availability, which remains close relationship with capacity (AC). tolerant (TUN) expressed lower stress index (SI) but use efficiency (PUE), H-ATPase uptake translocation shoots (PT), allowing it maintain better metabolic functioning. AC, PT, PUE, SI among management that promote resilient crops.

Язык: Английский

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Contrasting responses of fine root biomass and traits to large‐scale nitrogen and phosphorus addition in tropical forests in the Guiana shield

Oikos, Год журнала: 2024, Номер 2024(4)

Опубликована: Янв. 16, 2024

Fine roots mediate plant nutrient acquisition and growth. Depending on soil availability, plants can regulate fine root biomass morphological traits to optimise acquisition. Little is known, however, about the importance of these parameters influencing forest functioning. In this study, we measured responses additions gain a mechanistic understanding adaptations limitation in two tropical forests French Guiana, differing twofold their statuses. We analysed biomass, mean diameter (RD), specific length (SRL), area (SRA), tissue density (RTD) carbon (C), nitrogen (N) phosphorus (P) concentrations down 15 cm depth after three years N P additions. At lower‐fertility site Paracou, no changes or were detected with either addition, although increased addition. higher fertility site, Nouragues, traits. contrast, addition shifted from acquisitive more conservative by increasing RTD. A significant interaction between Nouragues pointed stronger absence N. Our results suggest that magnitude direction trait expression regulated fertility, corroborated response low sites, found lower plasticity compared fertile conditions, where caused antagonistic responses. Identifying exact role mechanisms affecting uptake Amazon growing different soils will be crucial foresee if how rapid global affect allocation.

Язык: Английский

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Maize shows intraspecific facilitation under phosphorus deficiency but competition under nitrogen deficiency when grown under increased plant densities in alkaline soil

Plant and Soil, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Язык: Английский

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