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@article{1337949, author = {Nadezhdina, Nadezhda and Plichta, Roman and Nadezhdin, Valeriy and Gebauer, Roman and Jupa, Radek and Habrová, Hana and Maděra, Petr}, article_number = {11}, doi = {http://dx.doi.org/10.1071/FP15079}, keywords = {anatomy; climatic driving forces; sclerenchyma; staining experiment; stomata; xeromorphic}, language = {eng}, issn = {1445-4408}, journal = {Functional Plant Biology}, title = {A comparative structural and functional study of leaf traits and sap flow in Dracaena cinnabari and Dracaena draco seedlings}, url = {http://www.publish.csiro.au/nid/102/paper/FP15079.htm}, volume = {42}, year = {2015} }
TY - JOUR ID - 1337949 AU - Nadezhdina, Nadezhda - Plichta, Roman - Nadezhdin, Valeriy - Gebauer, Roman - Jupa, Radek - Habrová, Hana - Maděra, Petr PY - 2015 TI - A comparative structural and functional study of leaf traits and sap flow in Dracaena cinnabari and Dracaena draco seedlings JF - Functional Plant Biology VL - 42 IS - 11 SP - 1092-1105 EP - 1092-1105 SN - 14454408 KW - anatomy KW - climatic driving forces KW - sclerenchyma KW - staining experiment KW - stomata KW - xeromorphic UR - http://www.publish.csiro.au/nid/102/paper/FP15079.htm L2 - http://www.publish.csiro.au/nid/102/paper/FP15079.htm N2 - Water relations for two remote populations of Dracaena tree species from the dragon tree group, Dracaena cinnabari Balfour f. and Dracaena draco (L.) L., were studied to test our hypothesis that morphological and anatomical differences in leaf structure may lead to varied functional responses to changing environmental conditions. Sap flow measurements were performed using the heatfield deformation method for four Dracaena seedlings grown in one glasshouse and two greenhouses, and leaf traits related to plant–water relationships were characterised. All traits studied confirmed that D. cinnabari leaves are more xeric in their morpho-anatomical structure compared with D. draco leaves. No radial sap flowvariability was detected in D. draco plant stems, whereas sapflowwas found to be higher in the inner part of D. cinnabari stems. The regular occurrence of reverse sap flow at night in both Dracaena species was consistent with a staining experiment. Vapour pressure deficit (VPD) was found to be the main driver for transpiration for both Dracaena species. However, the relationship between VPD and sap flow appeared to be different for each species, with a clockwise or no hysteresis loop for D. draco and a counter-clockwise hysteresis loop for D. cinnabari. This resulted in a shorter transpiration cycle in D. cinnabari. The observed superior water-saving strategy of D. cinnabari corresponds to its more xeric morpho-anatomical leaf structure compared with D. draco. ER -
NADEZHDINA, Nadezhda, Roman PLICHTA, Valeriy NADEZHDIN, Roman GEBAUER, Radek JUPA, Hana HABROVÁ a Petr MADĚRA. A comparative structural and functional study of leaf traits and sap flow in Dracaena cinnabari and Dracaena draco seedlings. \textit{Functional Plant Biology}. 2015, roč.~42, č.~11, s.~1092-1105. ISSN~1445-4408. Dostupné z: https://dx.doi.org/10.1071/FP15079.
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