Share This Author
Plant responses to abiotic stresses: heavy metal-induced oxidative stress and protection by mycorrhization.
The present results indicate that mycorrhization stimulated the phenolic defence system in the Paxillus-Pinus mycorRhizal symbiosis and Plants in certain mycor rhizal associations are less sensitive to cadmium stress than non-mycorrhizal plants.
Making the life of heavy metal-stressed plants a little easier.
- P. Gratão, A. Polle, P. Lea, R. Azevedo
- Environmental ScienceFunctional plant biology : FPB
- 1 July 2005
This review is to assess the mode of action and role of antioxidants in protecting plants from stress caused by the presence of heavy metals in the environment.
Apoplastic Peroxidases and Lignification in Needles of Norway Spruce (Picea abies L.)
It is suggested that soluble alkaline apoplastic peroxidases participate in lignin formation in spruce needles, which was apparently unrelated to developmentally regulated lignification inspruce needles.
The genome of Laccaria bicolor provides insights into mycorrhizal symbiosis
The predicted gene inventory of the L. bicolor genome points to previously unknown mechanisms of symbiosis operating in biotrophic mycorrhizal fungi, providing an unparalleled opportunity to develop a deeper understanding of the processes by which symbionts interact with plants within their ecosystem to perform vital functions in the carbon and nitrogen cycles that are fundamental to sustainable plant productivity.
Dissecting the superoxide dismutase-ascorbate-glutathione-pathway in chloroplasts by metabolic modeling. Computer simulations as a step towards flux analysis.
- A. Polle
- BiologyPlant physiology
- 1 May 2001
The present study introduces metabolic modeling as a new tool to analyze the network of redox reactions composing the superoxide dismutase-ascorbate (Asc)-glutathione (GSH) cycle. Based on previously…
Cadmium-induced changes in antioxidative systems, hydrogen peroxide content, and differentiation in Scots pine roots.
In conclusion, Cd did not cause necrotic injury in root tips but appeared to expedite differentiation, thus leading to accelerated aging and may have triggered the developmental program leading to xylogenesis.
Transport and detoxification of manganese and copper in plants
This review provides a broad overview of the long distance and cellular transport as well as detoxification and homeostasis mechanisms of Mn and Cu, which are essential micronutrients but extremely toxic at elevated concentrations.
Gradual Soil Water Depletion Results in Reversible Changes of Gene Expression, Protein Profiles, Ecophysiology, and Growth Performance in Populus euphratica, a Poplar Growing in Arid Regions1[W][OA]
Drought successively induced shoot growth cessation, stomatal closure, moderate increases in oxidative stress-related compounds, loss of CO2 assimilation, and root growth reduction, indicating that acclimation was dominant over injury.
Increases in nitrogen uptake rather than nitrogen-use efficiency support higher rates of temperate forest productivity under elevated CO2
- A. Finzi, R. Norby, R. Ceulemans
- Environmental ScienceProceedings of the National Academy of Sciences
- 28 August 2007
Experimental evidence demonstrates that the uptake of N increased under elevated CO2 at the Rhinelander, Duke, and Oak Ridge National Laboratory FACE sites, yet fertilization studies showed that tree growth and forest NPP were strongly limited by N availability.
Downregulation of Cinnamoyl-Coenzyme A Reductase in Poplar: Multiple-Level Phenotyping Reveals Effects on Cell Wall Polymer Metabolism and Structure[W]
Downregulation of CCR in transgenic poplar was associated with up to 50% reduced lignin content and an orange-brown, often patchy, coloration of the outer xylem, suggesting a stress response induced by the altered cell wall structure.