. "Stabiln\u00ED izotopy uhl\u00EDku, kysl\u00EDku a vod\u00EDku se uk\u00E1zaly jako u\u017Eite\u010Dn\u00FD n\u00E1stroj pro studium proces\u016F fotosyntetick\u00E9 asimilace uhl\u00EDku a transportu vody v rostlin\u00E1ch. 13C v kutikule listu a letokruz\u00EDch informuj\u00ED o gradientu CO2 v listu a podm\u00EDnk\u00E1ch prost\u0159ed\u00ED."@cs . . . " hydrogen" . "1"^^ . . " carbon" . . " transpiraltion" . "IAA601410505" . . "2"^^ . . . "0"^^ . " hydraulic conductance" . " oxygen" . "2008-02-21+01:00"^^ . "2005-01-01+01:00"^^ . " isotopic fractionation" . "Distribuce stabiln\u00EDch izotop\u016F v org\u00E1nech rostlin - ukazatel fotosyntetick\u00E9 aktivity, podm\u00EDnek prost\u0159ed\u00ED a anatomie listu" . " discrimination" . "The interaction between plants and atmosphere leaves changes in isotopic composition of both. The changes are modulated by parameters of atmosphere as well as by processes in and anatomy of plants. The project aims to monitor the spatial distribution of stable isotopes of carbon, hydrogen and oxygen in leaves and stems with the emphasis on a/ lateral heterogeneity of deuterium and oxygen 18O in leaf water and dry matter, b/ gradient of 13C/12C ratio across amphistomatous leaves and its changes due to various irradiance, c/ changes in the isotopic content of oxygen and carbon in plants at various water and CO2 diffusibility in gas phase. Preliminary measurements show that the results may help in understanding of a/ hydraulic redistribution of water in leaves; isotopic signature of terrestrial plants in atmosphere, b/ physiological trade-off between the costs of CO2 fixation and carbon gain, c/ the effect of changes in atmospheric composition and irradiance on CO2 fixation."@en . "11"^^ . " xylem" . . "Stable isotopes of carbon, oxygen and hydrogen are useful tools in studies of photosynthesis and plant water relations. 13C abundance in leaf cuticle and in tree rings reflect CO2 gradients inside the leaves and environmental conditions, respectively."@en . . "2008-12-31+01:00"^^ . . . "11"^^ . "Interakce mezi rostlinami a atmosf\u00E9rou je spojena se zm\u011Bnami v izotopov\u00E9m slo\u017Een\u00ED obou. Zm\u011Bny odr\u00E1\u017Eej\u00ED jak parametry atmosf\u00E9ry tak parametry pochod\u016F v rostlin\u011B v\u010Detn\u011B jej\u00ED anatomie. Projekt si klade za c\u00EDl zm\u011B\u0159it a popsat prostorovou a \u010Dasovou frakcionaci stabiln\u00EDch izotop\u016F uhl\u00EDku, vod\u00EDku a kysl\u00EDku v listech a stonc\u00EDch rostlin s d\u016Frazem na a/ later\u00E1ln\u00ED heterogenitu obsahu deuteria a kysl\u00EDku 18O v listu (ve vod\u011B i v su\u0161in\u011B), b/ na zm\u011Bny v obsahu izotopu 13C v p\u0159\u00ED\u010Dn\u00E9m \u0159ezu hypostomatick\u00E9ho listu p\u0159i prom\u011Bnliv\u00E9 oz\u00E1\u0159enosti, c/ na zm\u011Bny v izotopov\u00E9m slo\u017Een\u00ED kysl\u00EDku a uhl\u00EDku v su\u0161in\u011B list\u016F p\u0159i prom\u011Bnliv\u00E9 difusivit\u011B atmosf\u00E9ry. P\u0159edb\u011B\u017En\u00E1 m\u011B\u0159en\u00ED a liter\u00E1rn\u00ED data ukazuj\u00ED, \u017Ee z v\u00FDsledk\u016F bude mo\u017En\u00E9 usuzovat na a/ anatomickou stavbu hydraulick\u00E9ho syst\u00E9mu listu a na izotopov\u00FD %22podpis%22 terestrick\u00E9 vegetace v atmosf\u00E9\u0159e, b/ na fyziologick\u00FD %22trade-off%22 mezi n\u00E1klady na asimila\u010Dn\u00ED apar\u00E1t a ziskem uhl\u00EDku, c/ na \u00FA\u010Dinek zm\u011Bn ve slo\u017Een\u00ED atmosf\u00E9ry a oz\u00E1\u0159enosti na fotosyntetickou fixaci CO2." . . " water relations" . . "plant physiology" . "2009-07-02+02:00"^^ . " carbon balance" . " stable isotopes" . "Patterns of isotopic composition of plant organs - a marker of photosynthetic activity, environmental conditions and leaf anatomy"@en . "http://www.isvav.cz/projectDetail.do?rowId=IAA601410505"^^ . " leaf" . . " photosynthesis" . . . " gas exchange" . "plant physiology; photosynthesis; water relations; transpiraltion; leaf; anatomy; stable isotopes; discrimination; isotopic fractionation; carbon; hydrogen; oxygen; xylem; hydraulic conductance; gas exchange; carbon balance; atmosphere"@en . " anatomy" . .