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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 and 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, vol.~42, No~11, p.~1092-1105. ISSN~1445-4408. Available from: https://dx.doi.org/10.1071/FP15079.
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