TY - JOUR
T1 - Impact of UV-B, heat and chemicals on ethylene-production of lichens
AU - Garty, Jacob
AU - Weissman, Lior
AU - Levin, Tal
AU - Garty-Spitz, Rachel
AU - Lehr, Haya
N1 - Funding Information:
This research was funded by the Tel Aviv University Fund. We thank also Dr. W. Purvis, Dr. C. Scheidegger, Dr. S. Loppi and Prof. J. Elix for their useful remarks relevant to the section dealing with lichen substances.
PY - 2004/11
Y1 - 2004/11
N2 - To assess the impact of UV-B radiation combined with NaHSO3 in solution under laboratory conditions, we compared the amounts of stress-ethylene produced by two lichen species of the same genus. Ramalina lacera, an epiphytic Mediterranean lichen, was found to be rather sensitive to UV-B combined with NaHSO3, relative to the epilithic desert lichen R. maciformis. The impact of high temperatures with FeCl2 in solution, measured by amounts of stress ethylene accentuated the adaptability of R. maciformis to desert conditions, whereas R. lacera appeared to be rather sensitive to extreme temperatures especially in the case of chemical contamination. The adaptability of R. maciformis to UV-B appears to be related to the photoprotective capabilities of lichen substances.
AB - To assess the impact of UV-B radiation combined with NaHSO3 in solution under laboratory conditions, we compared the amounts of stress-ethylene produced by two lichen species of the same genus. Ramalina lacera, an epiphytic Mediterranean lichen, was found to be rather sensitive to UV-B combined with NaHSO3, relative to the epilithic desert lichen R. maciformis. The impact of high temperatures with FeCl2 in solution, measured by amounts of stress ethylene accentuated the adaptability of R. maciformis to desert conditions, whereas R. lacera appeared to be rather sensitive to extreme temperatures especially in the case of chemical contamination. The adaptability of R. maciformis to UV-B appears to be related to the photoprotective capabilities of lichen substances.
KW - Bisulfite ions
KW - FeCl
KW - High temperatures
KW - Ramalina lacera
KW - Ramalina maciformis
UR - http://www.scopus.com/inward/record.url?scp=14944347951&partnerID=8YFLogxK
U2 - 10.1007/s10874-004-1231-x
DO - 10.1007/s10874-004-1231-x
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AN - SCOPUS:14944347951
SN - 0167-7764
VL - 49
SP - 251
EP - 266
JO - Journal of Atmospheric Chemistry
JF - Journal of Atmospheric Chemistry
IS - 1-3
ER -