Results 81 to 90 of about 1,660 (182)

Opposing seasonal trends in source water and sugar dampen intra‐annual variability in tree rings oxygen isotopes

open access: yesNew Phytologist, Volume 247, Issue 1, Page 97-114, July 2025.
Summary Variations of oxygen isotopes δ18O in tree rings provide critical insights into past climate and tree physiological processes, yet the mechanisms shaping the intra‐annual δ18O signals remain incompletely understood. To address this gap, we investigated how seasonal changes in source water, leaf water, and sugars influence δ18O recorded along ...
Paul Szejner   +9 more
wiley   +1 more source

Critical Players and Gene Expression Regulation in Eucalyptus Xylogenesis [PDF]

open access: yes, 2016
Secondary xylem, commonly known as wood, is essentially formed by highly lignified secondary cell walls of both fibres and vessels. The process of formation of secondary xylem is also termed xylogenesis.
Carocha, Victor João Martins Taveira
core  

Ecological thresholds and transformations due to climate change: The role of abiotic stress

open access: yesEcosphere, Volume 16, Issue 4, April 2025.
Abstract An ecological threshold is the point at which a comparatively small environmental change triggers an abrupt and disproportionately large ecological response. In the face of accelerating climate change, there is concern that abrupt ecosystem transformations will become more widespread as critical ecological thresholds are crossed.
Michael J. Osland   +20 more
wiley   +1 more source

Highest Occurring Vascular Plants from Ladakh Provide Wood Anatomical Evidence for a Thermal Limitation of Cell Wall Lignification

open access: yesPlant, Cell &Environment, Volume 48, Issue 2, Page 1445-1451, February 2025.
ABSTRACT As an evolutionary achievement of almost all terrestrial plants, lignin biosynthesis is essential for various mechanical and physiological processes. Possible effects of plant cell wall lignification on large‐scale vegetation distribution are, however, not yet fully understood. Here, we present double‐stained, wood anatomical stem measurements
Ulf Büntgen   +2 more
wiley   +1 more source

A Coupled Model of Hydraulic Eco‐Physiology and Cambial Growth — Accounting for Biophysical Limitations and Phenology Improves Stem Diameter Prediction at High Temporal Resolution

open access: yesPlant, Cell &Environment, Volume 48, Issue 2, Page 1344-1365, February 2025.
ABSTRACT Traditional photosynthesis‐driven growth models have considerable uncertainties in predicting tree growth under changing climates, partially because sink activities are directly affected by the environment but not adequately addressed in growth modelling.
Che Liu   +4 more
wiley   +1 more source

Systems biology of organellar carbon metabolism in Eucalyptus xylogenesis

open access: yes, 2020
Thesis (PhD (Genetics))--University of Pretoria, 2020.Trees play a pivotal role in the global carbon cycle through the fixation and storage of carbon as polysaccharide and phenolic biopolymers in the secondary cell walls of xylem fibre cells (wood ...

core   +1 more source

Molecular Mechanism of Xylogenesis in Moso Bamboo (Phyllostachys edulis) Shoots during Cold Storage

open access: yes, 2018
A bamboo shoot is the immature stem of the woody grass and a nutritious and popular vegetable in East Asia. However, it undergoes a rapid xylogenesis process right after harvest, even being stored in a cold chamber.
Antony Bacic   +9 more
core   +1 more source

Critical minimum temperature limits xylogenesis and maintains treelines on the southeastern Tibetan Plateau

open access: yes, 2017
Physiological and ecological mechanisms that define treelines are still debated. It has been suggested that the absence of trees above the treeline is caused by low temperatures that limit growth.
Cufar, Katarina   +14 more
core   +1 more source

Arabidopsis SHR and SCR transcription factors and AUX1 auxin-influx carrier control the switch between adventitious rooting and xylogenesis in planta and in in-vitro-cultured thin cell layers [PDF]

open access: yes, 2015
Background and Aims Adventitious roots (ARs) are essential for vegetative propagation. The Arabidopsis thaliana transcription factors SHORT ROOT (SHR) and SCARECROW (SCR) affect primary/lateral root development, but their involvement in AR formation is
DEL DUCA, STEFANO   +19 more
core   +1 more source

The adaptability of Ulmus pumila and the sensitivity of Populus sibirica to semi-arid steppe is reflected in the stem and root vascular cambium and anatomical wood traits

open access: yesFrontiers in Plant Science
Afforestation success is measured by the tree establishment and growth capacity which contribute to a range of ecosystem services. In the Mongolian steppe, Populus sibirica and Ulmus pumila have been tested as candidate species for large afforestation ...
Anastazija Dimitrova   +10 more
doaj   +1 more source

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