J 2015

A comparative structural and functional study of leaf traits and sap flow in Dracaena cinnabari and Dracaena draco seedlings

NADEZHDINA, Nadezhda, Roman PLICHTA, Valeriy NADEZHDIN, Roman GEBAUER, Radek JUPA et. al.

Basic information

Original name

A comparative structural and functional study of leaf traits and sap flow in Dracaena cinnabari and Dracaena draco seedlings

Authors

NADEZHDINA, Nadezhda (203 Czech Republic, guarantor), Roman PLICHTA (203 Czech Republic), Valeriy NADEZHDIN (203 Czech Republic), Roman GEBAUER (203 Czech Republic), Radek JUPA (203 Czech Republic, belonging to the institution), Hana HABROVÁ (203 Czech Republic) and Petr MADĚRA (203 Czech Republic)

Edition

Functional Plant Biology, 2015, 1445-4408

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Australia

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 2.491

RIV identification code

RIV/00216224:14310/15:00086859

Organization unit

Faculty of Science

DOI

UT WoS

000369522800008

Keywords in English

anatomy; climatic driving forces; sclerenchyma; staining experiment; stomata; xeromorphic

Tags

Tags

International impact, Reviewed
Změněno: 22/11/2017 14:15, RNDr. Radek Jupa, Ph.D.

Abstract

V originále

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.