Physiological,anatomical and biomass partitioning responses to ozone in the Mediterranean endemic plant Lamottea dianae

6533b83afe1ef96bd12a7007

RESEARCH PRODUCT

Physiological,anatomical and biomass partitioning responses to ozone in the Mediterranean endemic plant Lamottea dianae

Vicent Calatayud María José Sanz José Reig-armiñana Júlia Cerveró Francisco J. García-breijo Francisco J. García-breijo

subject

Plant water use Chlorophyll Photoinhibition Endemic plants Rubisco Southern Europe Chloroplasts Perennial plant Physiological process Health Toxicology and Mutagenesis Environmental stress Asteraceae Environmental protection Plant Roots Environmental impact chemistry.chemical_compound Anatomical variation In vivo study Physiological response Biomass Photosynthesis Biomass partitioning BIOLOGIA VEGETAL food and beverages General Medicine Pollution Pollen Biomass partitioning Anatomy Stomatal conductance Carbon dioxide fixation BOTANICA Stomatal conductance Biology Phloem Photosynthesis Article Adverse outcome Ozone Lamottea dianae Biomass allocation Botany Photoinhibition Species conservation Callose RuBisCO Plant damage Public Health Environmental and Occupational Health Water use efficiency Plant exudate Plant Nonhuman Plant Leaves chemistry Carbon dioxide Oxidative stress Spain biology.protein Degeneration Phloem Endemic species Risk factor Controlled study

description

Ozone effects on the perennial forb Lamottea dianae were studied in an open-top chamber experiment. Ozone was found to induce reductions in CO 2 assimilation and water use efficiency in the leaves of this species. These reductions were mainly related to a decline in the in vivo CO 2 fixation capacity of Rubisco (V c,max), rather than to stomatal limitations or photoinhibitory damage (F v:F m). In addition to chloroplast degeneration, other observed effects were callose accumulation, formation of pectinaceous wart-like cell wall exudates and phloem alterations. Moreover, ozone exposure significantly reduced root dry biomass. The possible relevance of these adverse effects for Mediterranean forbs is commented. These results show that endemic plants can be very sensitive to ozone, suggesting that risks associated with this pollutant should be taken into account for conservation purposes. © 2011 Elsevier Inc.

year	journal	country	edition	language
2011-07-01

10.1016/j.ecoenv.2011.02.023 http://hdl.handle.net/10251/60268