کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6294381 1617146 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Monitoring with lichens - Conductivity methods assess salt and heavy metal damage more efficiently than chlorophyll fluorescence
ترجمه فارسی عنوان
نظارت بر لایه ها - روش های هدایت الکتریکی آسیب فلزات نمک و سنگین را بیشتر از فلورسانس کلروفیل به دست می آورند
کلمات کلیدی
فلورسانس کلروفیل، تحمل نمک، فلزات سنگین، چاشنی روش هدایت،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی
In the lab, we exposed three foliose lichen species, Lobaria pulmonaria, Parmelia sulcata and Xanthoria aureola, to 0, 0.01, 0.2, and 0.6 M NaCl in combinations with copper and zinc (0, 10, 100, 500 μM). High salt concentrations adversely affected the lichen membrane integrity as measured by conductivity methods, whereas the potential photosystem II efficiency (Fv/Fm) was tolerant. High light was necessary to reduce Fv/Fm in thalli exposed to salt, whereas high light did not aggravate the conductivity. The seashore species X. aureola was much more resistant to salt than the old forest species L. pulmonaria. With respect to Cu and Zn, used concentrations had no (P. sulcata, X. aureola) or small (L. pulmonaria) effects on Fv/Fm. However, both heavy metals substantially increased conductivity in all species, consistent with membrane damage. Thus, the conductivity method detected high salt, high copper and high zinc stress much more efficiently than did the chlorophyll fluorescence method. This suggests that membrane integrity of the mycobiont is more sensitive to salt and heavy metal stress than potential photosystem II efficiency of its autotrophic partners.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Indicators - Volume 55, August 2015, Pages 59-64
نویسندگان
, , ,