Autor:	N. V. Marina, S. A. Shavnin, G. N. Novoselova, V. V. Fomin
Rok vydání:	2001
Předmět:	Pollution Quenching (fluorescence) Chemistry media_common.quotation_subject Plant physiology Plant Science Photosynthesis Chloroplast Light intensity Environmental chemistry Botany Shading Chlorophyll fluorescence media_common
Zdroj:	Russian Journal of Plant Physiology. 48:657-661
ISSN:	1021-4437
DOI:	10.1023/a:1016720405625
Popis:	The pigment composition and light-response curves of the indices of prompt chlorophyll fluorescence were investigated in needles sampled from various parts of the tree crown in pine trees growing under natural conditions at various distances from a source of industrial air pollution (a copper-melting works). Shading and pollution decreased the threshold light level of the state corresponding to the second phase of the light-response curve of nonphotochemical chlorophyll fluorescence quenching, increased a nonradiating dissipation of the absorbed light energy, and decreased the rate of electron transfer between PSII and PSI. The patterns thus established demonstrate the existence of nonspecific chloroplast responses to pollution and shading similar in their mechanism, which decrease the efficiency of light energy utilization.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::37028f073cf0d5db0cf1805e369bbdef https://doi.org/10.1023/a:1016720405625 Zobrazit plný text záznamu Full text from SpringerLink