An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
... AIMS: Cerrado woody species are divided into a small group of aluminum (Al)-accumulating species and the rest of the woody species. Both groups grow well on acidic and Al-rich soils. We found a Cerrado remnant growing on a calcareous soil with high calcium (Ca) and low Al saturations (m%). We checked whether Al deposition differs between leaf veins and leaf blade, and predicted that plants grown o ...
... AIMS: Antimony (Sb) is locally found at potentially toxic concentrations in mineralized soils, usually together with arsenic (As). However, local adaptation of plant populations to Sb toxicity has never been shown thus far. Here we compared Sb tolerance and accumulation between a non-metallicolous (NM) population of Salvia spinosa, and a con-specific metallicolous (M) population from a strongly Sb ...
Dicranopteris linearis; aluminum; apoplast; atomic absorption spectrometry; energy-dispersive X-ray analysis; ferns and fern allies; fronds; phytoliths; protoplasts; rare earth elements; scanning electron microscopy; silicon; tissues; China
Abstract:
... AIMS: Dicranopteris linearis is a fern that accumulates unusually high concentrations (up to 0.3% dry weight) of rare earth elements (REEs) in China. Previously, we reported that D. linearis accumulates high concentrations of aluminium (Al) and silicon (Si) in the fronds, but the interactions between these elements and REEs were unknown. METHODS: In this study, a range of analytical techniques, in ...
Pinus sylvestris; Quercus petraea; climate change; drought; forests; leaf water potential; mixed stands; mixing; pure stands; silvicultural practices; soil profiles; soil water; summer; trees; water shortages; water uptake; xylem
Abstract:
... AIMS: The growing demand from forest managers is to identify silvicultural practices to overcome projected water scarcity during the next decades. One solution is to mix tree species in the same stand, thereby increasing resource partitioning and minimizing competition for limited soil water. This study investigates the mixture approach for Quercus petraea (Matt.) Liebl. and Pinus sylvestris L. du ...
... In the published version, the article title was presented incorrectly. The word “cycling” was inadvertently deleted. The correct title is shown here. ...
Populus fremontii; canopy; environmental factors; forest litter; genetics; genotype; leaves; microbial communities; models; phenology; spring; temperature; trees
Abstract:
... AIMS: In forest ecosystems, trees may have genetically distinct patterns in leaf decomposition. Trees also can have genetically distinct canopy environments which modify temperature, moisture, and microbial communities on the forest floor. The interaction between these factors may result in underexplored interactions between microenvironment and leaf decomposition at the genotype level. METHODS: W ...
... AIMS: Endophytes benefit host plants by increasing biotic and abiotic stress tolerance. The aims of this study were to evaluate endophytic community (EC) of Arabis alpina, a Pb-Zn hyperaccumulator and investigate role of EC in host plants metal tolerance. METHODS: EC of A. alpina growing at Pb–Zn mining area was evaluated by Illumina MiSeq sequencing. Pot experiments were conducted for the role of ...
Fagus sylvatica subsp. sylvatica; Histosols; Picea abies; Podzols; acidification; censuses; hydromorphic soils; mortality; old-growth forests; pedodiversity; physicochemical properties; population dynamics; soil quality; soil sampling; soil water; species diversity; tree growth; tree mortality; trees; Czech Republic
Abstract:
... AIMS: The dynamics of forests dominated by European beech (Fagus sylvatica) and Norway spruce (Picea abies) have been studied intensively. However, mainly due to a lack of long-term data, little is known about how these dynamics interact with soil conditions. In an old-growth spruce-beech forest with high soil diversity we studied how the development of tree populations differs among different soi ...
... AIMS: The aim of this study was to examine whether differences in the provenances of canopy tree species affect the community of soil invertebrates. METHODS: We used a common garden, where Cryptomeria japonica trees (Yoshino, Yanase, Itoshiro and Yaku) from four provenances were planted separately in each plot. In these plots, we measured the concentration of nutrients in leaves, litter and roots; ...
... AIMS: The study investigated the growth and metal accumulation over time of young forest vegetation growing on metal-contaminated topsoil above either acidic or calcareous subsoil. METHODS: A 4-year model ecosystem experiment was performed under quasi-natural conditions. The heavy metal (HM) contaminated topsoil contained around 3000 mg/kg Zn, 600 Cu, 100 Pb, 9 Cd. RESULTS: Total biomass was 25.7% ...
... BACKGROUND AND AIMS: Emerging perennial grain crops yield less grain than annual crops, but the economic viability of these perennial systems could be improved if both forage and grain are harvested. However, the belowground consequences of forage removal in perennial grain systems are unknown. This study aimed to determine the effect of the additional harvest of forage biomass on overall plant bi ...
... BACKGROUND: Abiotic stresses are threatening wheat productivity across the globe, which is often associated with nutrient deficiencies. Zinc (Zn) is involved in many physiological processes of plants, and high intrinsic seed Zn concentrations may help to improve the resistance of wheat to abiotic stresses. METHODS: Three separate experiments evaluated the effect of intrinsic seed zinc on bread whe ...
... AIMS: The aim of this study was to identify how land-use intensity shapes the kinetic properties of extracellular hydrolytic enzymes (EHEs) in rhizosphere soil among and within plant species representing different i) resource acquisition strategies (exploitative (ex) vs. conservative (co) plant species) and ii) response types to land-use intensification (winner (Wi) vs. loser (Lo), i.e. species th ...
... AIMS: The function of strigolactone isomers in sorghum phosphorus acquisition efficiency (PAE) is still a matter of speculation. Therefore, the objective of this study was to investigate the effects of cultivar-specific strigolactone composition on sorghum growth indices, responsiveness of arbuscular mycorrhizal fungi (AMF), and PAE. METHODS: Two Striga-resistant (orobanchol-producing) and two Str ...
... BACKGROUND AND AIMS: Atmospheric nitrogen (N) deposition affects litter decomposition. However, how endogenous litter quality and exogenous resource supply alter the N deposition effect on litter decomposition and deposited N immobilized by microbes remains unclear. METHODS: We conducted a laboratory experiment to examine how the N deposition effect on litter decomposition varies with endogenous l ...
... AIMS: Soil alkalization imposes severe ion toxicity, osmotic stress, and high pH stress to plants, inhibiting their growth and productivity. NaHCO₃ is a main component of alkaline soil. However, knowledge of the NaHCO₃-responsive proteomic pattern of alkaligrass is still lacking. Alkaligrass (Puccinellia tenuiflora) is a monocotyledonous halophyte pasture widely distributed in the Songnen Plain in ...
... AIMS: Invasive plants often modify soil biota to benefit their own fitness over native species, and create a positive plant-soil feedback (PSF). Rhizosphere effect (RE), the alterations of decomposition processes by living roots and associated rhizodeposits, may act as a mechanism that contributes to the positive PSF via accelerating litter decomposition and subsequent soil nutrient turnover. Howe ...
Artemisia frigida; Carex; Stipa krylovii; aboveground biomass; belowground biomass; botanical composition; community structure; fine roots; forbs; grasses; nitrogen; steppes; China
Abstract:
... AIMS: Shifts of plant community composition with enhanced atmospheric nitrogen (N) deposition in grasslands have occurred globally. Despite extensive studies on the effects of enhanced N deposition on plant species composition of grassland community, few studies have focused on belowground ecological processes and duration of N addition. METHODS: In situ long-term (14-year: 2004–2017) and short-te ...
Bayesian theory; biomass; forests; isotopes; lighting; mixing; rain; seasonal variation; soil water; stand density; statistical models; topsoil; water resources; water table; water uptake; woody plants
Abstract:
... AIMS: Our aim was to investigate the water sources used by woody species under contrasting water availability and the extent of water-sources-use differentiation among dominant woody species in a tropical coastal dune forest. METHODS: We sampled 15 woody species in a Brazilian restinga forest and, through Bayesian isotope mixing models, we estimated the proportion of water sources used. We tested ...
... BACKGROUND AND AIMS: The incidence of extreme weather events, particularly drought is predicted to increase in the future and alter the ecosystem process. Despite that the interplay between plant species play a critical role in reducing the vulnerability of soil ecosystem to drought, whether the presence of legumes in plant community could maintain nutrient uptake of focal species by stabilizing s ...