Mireille Cabané

Mireille Cabané
University of Lorraine | UdL · UMR 1434 SILVA Université de Lorraine AgroParisTech INRA

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23
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Introduction
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Publications

Publications (23)
Article
Full-text available
Poplar (Populus tremula x alba) trees (clone INRA 717-1-B4) were cultivated for 1 month in phytotronic chambers with two different levels of ozone (60 and 120 nL L(-1)). Foliar activities of shikimate dehydrogenase (EC 1.1.1.25), phenylalanine ammonia lyase (EC 4.3.1.5), and cinnamyl alcohol dehydrogenase (CAD, EC 1.1.1.195) were compared with cont...
Article
Full-text available
Wood formation in trees is a dynamic process that is strongly affected by environmental factors. However, the impact of ozone on wood is poorly documented. The objective of this study was to assess the effects of ozone on wood formation by focusing on the two major wood components, cellulose and lignin, and analysing any anatomical modifications. Y...
Article
Full-text available
Ozone induces a stimulation of the phenylpropanoid and lignin biosynthesis pathways in leaves but the response of wood, the main lignin-producing tissue, is not well documented. The purpose of this study was to compare the responses of phenylpropanoid and lignin pathways in leaves and stem wood by a simultaneous analysis of both organs. Young popla...
Article
Full-text available
Trees will have to cope with increasing levels of CO2 and ozone in the atmosphere. The purpose of this work was to assess whether the lignification process could be altered in the wood of poplars under elevated CO2 and/or ozone. Young poplars were exposed either to charcoal-filtered air (control), to elevated CO2 (800 μl l−1), to ozone (200 nl l−1)...
Article
Full-text available
With background concentrations having reached phytotoxic levels during the last century, tropospheric ozone (O3) has become a key climate change agent, counteracting carbon sequestration by forest ecosystems. One of the main knowledge gaps for implementing the recent O3 flux-based critical levels (CLs) concerns the assessment of effective O3 dose l...
Article
Full-text available
The correct integration of the detoxification processes in a risk assessment model for ozone damage on plants remains challenging. In particular, the intracellular compartmentation of antioxidant metabolites could play a role, since each compartment presents its own sensitivity to ROS and metabolite set. For each compartment, we tried to provide bo...
Article
Full-text available
Key messageOzone, one of the major atmospheric pollutants, alters tree growth, mainly by decreasing carbon assimilation and allocation to stems and roots. To date, the mechanisms of O3 impact at the cellular level have been investigated mainly on young trees grown in controlled or semi-controlled conditions. In the context of climate change, it is...
Chapter
Lignins, major components of the vascular plant cell wall, provided the mechanical support that allowed the development of upright plants adapted to a terrestrial habitat. Their biosynthesis through the phenylpropanoid and monolignol pathways has been extensively studied and significant advances have recently been made in understanding the regulati...
Poster
Wood formation is altered in poplar under ozone and/or carbon dioxide.
Article
The effect of low temperatures (14°C/8°C, day/night) on polypeptide synthesis in leaves of two soybean (Glycine max [L.] Merr.) cvs (Verdon and Maple Arrow) differing in cold sensitivity was investigated. The two cultivars were initially characterized in terms of cold tolerance according to their growth at the young plant stage at 14°C/8°C. Verdon...
Article
Effects of ozone and/or drought stresses on phosphoenolpyruvate carboxylase (PEPc, EC 4.1.1.31) regulation in Pinus halepensis Mill. needles were assessed over 3 months in controlled conditions. Whereas moderated water stress applied to Aleppo pine had no effect on PEPc activity compared to the control, which was probably related to the high tolera...
Article
Full-text available
Cinnamyl alcohol dehydrogenase (CAD) is an enzyme involved in lignin biosynthesis. We have previously isolated pure CAD enzyme from Norway spruce (Picea abies L.) cell culture. Here we report on partial protein sequences of the 42 kDa CAD polypeptide. A cDNA encoding CAD was isolated from the spruce cell culture. The open reading frame of a full-le...
Article
Through a 5-d exposure at 14 degrees C/8 degrees C (day/night), soybean (Glycine max [L.] Merr.) was acclimated to a lower temperature of 8 degrees C. In order to assess changes in protein synthesis related to chilling acclimation, proteins were labeled in vivo with [35S]methionine, separated by two-dimensional gel electrophoresis, and the derived...
Chapter
The diversity of the reactions of plants to low temperatures is illustrated by the classical distinction between chilling-sensitive and freezing-sensitive species. In an attempt to improve our understanding of the cellular and molecular basis underlying this diversity, we have investigated the fluidity of specific membranes in relation to cold resi...
Article
Highly purified tonoplast and plasmamembrane vesicles were isolated from microsomes of Catharanthus roseus (L.) G. Don. by preparative free-flow electrophoresis. The relative amounts of tonoplast and plasma-membrane vesicles in the total microsomes varied with the pH of the grinding medium. The most electronegative fractions were identified as tono...

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