A5076240794- Plant Water Relations and Carbon Dynamics
- Forest ecology and management
- Tree-ring climate responses
- Tree Root and Stability Studies
- Plant responses to water stress
- Ecology and Vegetation Dynamics Studies
- Urological Disorders and Treatments
- Plant Pathogens and Fungal Diseases
- Plant Reproductive Biology
- Ureteral procedures and complications
- Pediatric Urology and Nephrology Studies
- Fatigue and fracture mechanics
- Congenital Diaphragmatic Hernia Studies
- Forest Insect Ecology and Management
- bioluminescence and chemiluminescence research
- Forest Ecology and Biodiversity Studies
- Slime Mold and Myxomycetes Research
- Horticultural and Viticultural Research
- Traumatic Ocular and Foreign Body Injuries
- Metastasis and carcinoma case studies
- Amoebic Infections and Treatments
- Autopsy Techniques and Outcomes
- Phytoplasmas and Hemiptera pathogens
- Wood and Agarwood Research
- Mycorrhizal Fungi and Plant Interactions
BOKU University
2021-2024
Modibbo Adama University of Technology
2023
University of Jos
2023
Universität Ulm
2014-2021
Swiss Federal Laboratories for Materials Science and Technology
2017-2021
Beijing Forestry University
2021
Royal Botanic Gardens, Kew
2011
Kyoto University
1992
Johns Hopkins Medicine
1992
Johns Hopkins University
1992
Summary The evolution of lignified xylem allowed for the efficient transport water under tension, but also exposed vascular network to risk gas emboli and spread between conduits, thus impeding sap leaves. A well‐known hypothesis proposes that safety (its ability resist embolism formation spread) should trade off against efficiency capacity water). We tested this safety–efficiency in branch across 335 angiosperm 89 gymnosperm species. Safety was considered at three levels: potentials where...
Summary Parenchyma is an important tissue in secondary xylem of seed plants, with functions ranging from storage to defence and effects on the physical mechanical properties wood. Currently, we lack a large‐scale quantitative analysis ray parenchyma ( RP ) axial AP fractions. Here, use data literature fractions investigate potential relationships climate growth form total RAP ). We found 29‐fold variation fraction, which was more strongly related temperature than precipitation. Stem...
Direct visualization shows enhanced embolism of xylem samples when they are collected under tension.
Concentrations of nonstructural carbohydrates (NSCs) are used as proxies for the net carbon balance trees and indicators starvation resulting from environmental stress. Woody organs largest NSC-storing compartments in forest ecosystems; therefore, it is essential to understand factors that affect size this important storage pool. In wood, NSC predominantly deposited ray axial parenchyma (RAP); however, direct links between nutrient RAP anatomy have not yet been established. Here, we tested...
Parenchyma represents a critically important living tissue in the sapwood of secondary xylem woody angiosperms. Considering various interactions between parenchyma and water transporting vessels, we hypothesize structure-function relationship both cell types. Through generalized additive mixed model approach based on 2,332 angiosperm species derived from literature, explored proportion spatial distribution ray axial vessel size, while controlling for maximum plant height range climatic...
Abstract Climate change‐related environmental stress has been recognized as a driving force in accelerating forest mortality over the last decades Central Europe. Here, we aim to elucidate thermal sensitivity of three native conifer species, namely Norway spruce ( Picea abies ), Scots pine Pinus sylvestris ) and silver fir Abies alba non‐native Austrian nigra Douglas Pseudotsuga menziesii Atlas cedar Cedrus atlantica ). Thermal sensitivity, defined here decline maximum quantum yield...
Imperforate tracheary elements (ITEs) in wood of vessel-bearing angiosperms may or not transport water. Despite the significance hydraulic for defining ITE types, combination cell structure with water visualization planta has received little attention. This study provides a quantitative analysis structural features associated conductive vs. non-conductive nature ITEs. Visualization was studied 15 angiosperm species by dye injection and cryo-scanning electron microscopy. Structural ITEs were...
Abstract Plants can be highly segmented organisms with an independently redundant design of organs. In the context plant hydraulics, leaves may less embolism resistant than stems, allowing hydraulic failure to restricted distal organs that readily replaced. We quantified drought‐induced in needles and stems Pinus pinaster using high‐resolution computed tomography (HRCT). HRCT observations were compared rehydration kinetics method estimate contribution extra‐xylary pathways declining...
Investigating space allocation patterns of plant secondary xylem along a latitudinal gradient is useful to evaluate structure-function tradeoffs in woody angiosperm xylem. An anatomical dataset including 700 species across China was compiled together with and climate data for each species. The relative tissue fractions vessels, fibers, parenchyma (including ray axial parenchyma) were analyzed determine the effect differences phylogeny on variation. analyses revealed trade-off between vessel...
Summary Lenticels can be defined as pores that are the entrance of a continuous aeration system from atmosphere via living bark to secondary xylem in otherwise protective layers periderm. Most work on lenticels has had an anatomical focus but structure-function relationships still remain poorly understood. Gas exchange been considered main function lenticels, analogous stomata leaves. In this perspective review, we introduce novel ideas pertaining lenticel functions beyond gas exchange. We...
Abstract Premise Parenchyma is an important cell type in the secondary xylem of angiosperm trees, with considerable variability its abundance. However, functional significance these variations and their roles plant ecological strategies poorly understood at inter‐ intraspecific levels. Methods For this study, fractions axial parenchyma cells (AP) ray (RP) tissue were quantified for 156 individuals 45 tree species along elevational gradient from 600 to 1600 m a.s.l. eastern China....
The efflux of carbon dioxide (CO 2 ) from woody stems, a proxy for stem respiration, is critical flux ecosystems to the atmosphere, which increases with temperature on short timescales. However, plants acclimate their respiratory response longer timescales, potentially weakening carbon-climate feedback. magnitude this acclimation uncertain despite its importance predicting future climate change. We develop an optimality-based theory dynamically linking respiration leaf water supply predict...
On wood surfaces and in planar section, zones lines appear as narrow sharply delineated dark within visibly altered ("spalted") by the decay process. In intact wood, zone define an irregular volume of decaying wood. They are primarily aggregations melanised hyphae that enclose being decayed a single genetic individual fungus. industry for speciality products, highly valued, especially decorative pieces produced from turnery. While commonly found naturally infected they can also be induced...
Globally distributed extant conifer species must adapt to various environmental conditions, which would be reflected in their xylem structure, especially the tracheid characteristics of earlywood and latewood. With an anatomical trait dataset 78 growing throughout China, interspecific study within a phylogenetic context was conducted quantify variance dimensions response climatic soil conditions. There significant difference diameter between latewood while no detected wall thickness through...
Eventration of the diaphragm is a not uncommon condition, and usually discovered during examination patient for some other condition. The condition has been fully described by Morison, Le Wald others. It occurs on left side, may occur right both sides have seen to be affected.
Abstract Although bioluminescence is documented both anecdotally and experimentally, the parameters involved in production of fungal during wood colonization have not been identified to date. Here, for first time, this work develops a methodology produce hybrid living material by manipulating through merging fungus Desarmillaria tabescens with nonliving balsa (Ochroma pyramidale) achieve control autonomous emission bioluminescence. The highest produced soaking blocks before co‐cultivating...
Abstract Resilience to drought represents an important focus for trees during climate change, with the aim of predicting resistance and recovery species worldwide. Previous studies mainly linked tree growth resilience plant functional traits that are related resource acquisition investment. Here, we investigate a potential link between amount parenchyma tissue in wood, multifunctional may provide various physiological benefits drought‐related mechanisms. We compiled global tree‐ring data set...
Three cases in which the stomach has been found lying above diaphragm during an X-ray examination have recorded, two by LeWald (2, 3) and one Roberts (4). A fourth case described Bailey (1), but this was a postmortem discovery. I wish to add those discovered roentgenologic means. The patient, female aged 44, referred me for Dr. Langley, honorary physician Salford Royal Hospital. Until about year before time she had always enjoyed good health, except injury her right arm necessitated its...
Abstract Stem respiration is a key driver of carbon flux from ecosystems to the atmosphere, yet its response global warming remains poorly constrained. In particular it has been proposed that stem acclimates changing temperatures, which could have large implications for cycling under climate change, but no theory exists predict acclimated rates. Here, we hypothesized physiologically linked transpiration in order maintain hydraulic continuity. We then use linkage, combined with...