کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4421187 | 1308506 | 2011 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Physiological, anatomical and biomass partitioning responses to ozone in the Mediterranean endemic plant Lamottea dianae
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کلمات کلیدی
ΦexcPIIRuBisCORSLPPFDTPUNPQΦPSIIAOT40AmaxFm′ - Fm 'Anatomy - آناتومیAsat - اساتOzone - اُزون Oxidative stress - تنش اکسیداتیوVc,max - تو، حداکثرBiomass partitioning - جداسازی زیست تودهJmax - جماکسmaximum fluorescence - حداکثر فلورسنسstomatal conductance to water vapor - رطوبت دهان به بخار آبPhotosynthesis - فتوسنتزphotosynthetic photon flux density - فتوسنتز تراکم شار فوتونminimal fluorescence - فلورسانس حداقلFo′ - فوtranspiration rate - نرخ تنفسEndemic plants - گیاهان اندمیک
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
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چکیده انگلیسی
Ozone effects on the perennial forb Lamottea dianae were studied in an open-top chamber experiment. Ozone was found to induce reductions in CO2 assimilation and water use efficiency in the leaves of this species. These reductions were mainly related to a decline in the in vivo CO2 fixation capacity of Rubisco (Vc,max), rather than to stomatal limitations or photoinhibitory damage (Fv:Fm). 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 74, Issue 5, July 2011, Pages 1131-1138
Journal: Ecotoxicology and Environmental Safety - Volume 74, Issue 5, July 2011, Pages 1131-1138
نویسندگان
Vicent Calatayud, Francisco J. GarcÃa-Breijo, Júlia Cervero, José Reig-Armiñana, MarÃa José Sanz,