Results 101 to 110 of about 6,159 (234)

Intra‐annual transfer of hydrogen and oxygen isotopic signals from water and sugar precursors to tree rings: Processes and mechanisms

New Phytologist, EarlyView.
Intra‐annual radial growth of beech and spruce in 2021 and 2022. Summary The oxygen (δ18O) and hydrogen (δ2H) isotope compositions of leaf and xylem water shape tree‐ring isotope baselines, while the fraction of sugars undergoing isotopic modification downstream of leaves (fO, fH) determines the dominant hydrologic signal.
Haoyu Diao, Meisha Holloway‐Phillips, Xin Song, Fabian Bernhard, Peter Waldner, Kerstin Treydte, Matthias Saurer, Georg von Arx, Arthur Gessler, Katrin Meusburger, Marco M. Lehmann   +10 more
wiley   +1 more source

Arctic plants can take up inorganic nitrogen year‐round

New Phytologist, EarlyView.
Schematic overview of year‐round, Arctic seasonal periods as used throughout the paper and their relation to the 15 repeated measuring periods (top) and the three a priori contrasts (middle) used for statistical testing of seasonality in N‐uptake. Summary Arctic tundra experiences strong climatic seasonality, with cold and long winters, but effective ...
Emil Alexander Sherman Andersen, Gesche Blume‐Werry, Chenxin Feng, Friederike Gehrmann, Niki Leblans, Anders Michelsen, Johan Olofsson, Josefine Walz, Ellen Dorrepaal   +8 more
wiley   +1 more source

Research Progress on Stable Isotope Online Testing Technology for Organic Contaminants

Yankuang ceshi, 2013
Compound-specific isotope analysis (CSIA) online is an indispensable key technique for identifying the sources of organic contaminants in the environment and characterizing their transformation processes, but there are still some problems in practical ...
FANG Jing-jing, ZHOU Ai-guo, LIU Cun-fu, GAN Yi-qun, ZHOU Jian-wei, CAI He-sheng, LIU Yun-de, ZHANG Yan-peng   +7 more
doaj  

Virocell Necromass Provides Limited Plant Nitrogen and Elicits Rhizosphere Metabolites That Affect Phage Dynamics

Plant, Cell &Environment, EarlyView.
ABSTRACT Bacteriophages impact soil bacteria through lysis, altering the availability of organic carbon and plant nutrients. However, the magnitude of nutrient uptake by plants from lysed bacteria remains unknown, partly because this process is challenging to investigate in the field.
Vlastimil Novak, Michelle C. M. van Winden, Thomas V. Harwood, Rachel Neurath, Suzanne M. Kosina, Katherine B. Louie, Matthew B. Sullivan, Simon Roux, Karsten Zengler, Vivek K. Mutalik, Trent R. Northen   +10 more
wiley   +1 more source

A Water‐Saving Drought Survival Phenotype in a Wheat TILLING Mutant Involves Survival‐Biased Metabolic and Phosphorylation Reprogramming

Plant, Cell &Environment, EarlyView.
ABSTRACT Drought tolerance in crops often involves trade‐offs between water conservation, growth and reproduction. Understanding how water‐saving strategies are implemented at physiological and metabolic levels remains critical for improving crop performance under water‐limited conditions.
Ryosuke Mega, Shun‐ichiro Hirata, Kota Yamashita, Hinano Takase, Taishi Umezawa, Yasuko Watanabe, June‐Sik Kim, Tomoyuki Kosaka, Akihiro Nieda, Hisashi Tsujimoto   +9 more
wiley   +1 more source

Lack of Hydraulic Acclimation in Response to Multiple Droughts and Recovery

Plant, Cell &Environment, EarlyView.
ABSTRACT Human‐caused climate change is expected to bring more frequent and extended droughts with shorter wet periods of relief in between for many regions of the world. Critical knowledge gaps remain around the extent to which tree species can acclimate physiologically to repeated droughts.
Jaycie C. Fickle, Kelly L. Kerr, Lillie I. Congram, Cedric Zahnd, William R. L. Anderegg   +4 more
wiley   +1 more source

Glucose and fructose contributions to exogenous carbohydrate oxidation and performance at moderate altitude

The Journal of Physiology, EarlyView.
Abstract figure legend Co‐ingesting fructose with glucose increases exogenous carbohydrate oxidation at sea level, but its effect at altitude is unclear. This study compared glucose–fructose (GLU–FRU), glucose alone (GLU) and placebo during 120 min of running at 70% V̇O2max${{\dot{V}}_{{{{\mathrm{O}}}_2}{\mathrm{max}}}}$ at 2500 m in eight males.
Nicola C. Arjomandkhah, Andy J. King, Alex Griffiths, Roderick F. G. J. King, Douglas, J. Morrison, Thomas Preston, John P. O'Hara   +7 more
wiley   +1 more source

Measurement of Stable Carbon Isotope Ratio of Volatile Organic Compounds Using Thermal Desorption-Gas Chromatography-Combustion-Isotope Ratio Mass Spectrometry. [PDF]

Int J Anal Chem
Yuhong L, Xihuang L, Cifu L, Xijie Y.
europepmc   +1 more source

Nickel Wall-coated Microreactors for Enhanced Sensitivity and Peak Resolution in Compound-specific Carbon and Nitrogen Isotope Analysis. [PDF]

Anal Chem
Al-Ghoul H, Elsner M.
europepmc   +1 more source

Three New Calcium Formate Reference Materials for δ13C Measurements and a Redetermination of the R(13C/12C) Ratio for VPDB Based on Proton Nuclear Magnetic Resonance Measurements

Rapid Communications in Mass Spectrometry, Volume 40, Issue 18, 30 September 2026.
ABSTRACT Rationale Isotope ratio mass spectrometry (IRMS) and proton nuclear magnetic resonance (1H NMR) spectroscopy are independent techniques for determining the isotope ratio R(13C/12C) in organic compounds. However, the lack of suitable reference materials has limited intercalibration of results from these methods.
David W. Hoffman, Cornelia Rasmussen, Arndt Schimmelmann, Lauren T. Reid, Haiping Qi, Tyler B. Coplen   +5 more
wiley   +1 more source