"Enhanced UV-B radiation may lead to the decrease of specific phenolic compounds in Norway spruce needles"@en . . "Enhanced UV-B radiation may lead to the decrease of specific phenolic compounds in Norway spruce needles" . "Enhanced UV-B radiation may lead to the decrease of specific phenolic compounds in Norway spruce needles"@en . . "DE - Spolkov\u00E1 republika N\u011Bmecko" . "000256579400010" . "Dlouhodob\u00E9 vystaven\u00ED (23 t\u00FDdn\u016F) sazenic smrku ztepil\u00E9ho zv\u00FD\u0161en\u00E9 intenzit\u011B (+25%) ultrafialov\u00E9ho-B (UV-B) z\u00E1\u0159en\u00ED v poln\u00EDch podm\u00EDnk\u00E1ch vedlo k m\u00EDrn\u00E9mu n\u00E1r\u016Fstu koncentrace katechinu v jehlic\u00EDch (ca 7%); zat\u00EDmco u 4-hydroxyacetofenolu a piceinu byl pozorov\u00E1n signifikantn\u00ED pokles (ca 80%, respektive 72%). Tato zji\u0161t\u011Bn\u00ED dokumentuj\u00ED, \u017Ee UV-B z\u00E1\u0159en\u00ED indukuje rozd\u00EDly v synt\u00E9ze specifick\u00FDch fenolick\u00FDch l\u00E1tek. V \u010Dl\u00E1nku jsou diskutov\u00E1ny mo\u017En\u00E9 d\u016Fsledky na zm\u011Bnu tolerance rostlin."@cs . "Zv\u00FD\u0161en\u00E1 intenzita UV-B radiace m\u016F\u017Ee v\u00E9st k poklesu obsahu specifick\u00FDch fenolick\u00FDch l\u00E1tek v jehlic\u00EDch smrku ztepil\u00E9ho"@cs . "17" . . "1018-4619" . "Enhanced UV-B radiation may lead to the decrease of specific phenolic compounds in Norway spruce needles" . "The long-term (23 weeks) exposure of Norway spruce needles to supplemental (+25%) ultraviolet-B (UV-B) irradiances at field conditions resulted in the slight increase of catechin (ca 7%; p >0.05); however, significant decreases of extracted 4-hydroxyacetophenone (ca 80%; p <0.01) and picein (ca 72%; p <0.01). These findings document the dif-ferences in synthesis of specific phenolic compounds in-duced by UV-B radiation. The possible relations to plant tolerance are discussed." . "T\u0159\u00EDska, Jan" . "5" . . "Urban, Otmar" . . "Marek, Vladim\u00EDr Michal" . "366252" . . "RIV/67179843:_____/08:00309512!RIV09-AV0-67179843" . . "4"^^ . . . "Zv\u00FD\u0161en\u00E1 intenzita UV-B radiace m\u016F\u017Ee v\u00E9st k poklesu obsahu specifick\u00FDch fenolick\u00FDch l\u00E1tek v jehlic\u00EDch smrku ztepil\u00E9ho"@cs . . . . . . . "4"^^ . . . "4"^^ . "P(2B06068), Z(AV0Z60870520)" . "[9F45832C2074]" . "RIV/67179843:_____/08:00309512" . . . "4-hydroxyacetophenone; catechin; Norway spruce; picein; screening pigments; ultraviolet radiation"@en . "The long-term (23 weeks) exposure of Norway spruce needles to supplemental (+25%) ultraviolet-B (UV-B) irradiances at field conditions resulted in the slight increase of catechin (ca 7%; p >0.05); however, significant decreases of extracted 4-hydroxyacetophenone (ca 80%; p <0.01) and picein (ca 72%; p <0.01). These findings document the dif-ferences in synthesis of specific phenolic compounds in-duced by UV-B radiation. The possible relations to plant tolerance are discussed."@en . . "Vrchotov\u00E1, Nad\u011B\u017Eda" . "Fresenius Environmental Bulletin" . . . .