Effects of limited water availability on xylem transport in
liana Humulus lupulus L

J 2016

Effects of limited water availability on xylem transport in liana Humulus lupulus L

JUPA, Radek, Lenka PLAVCOVÁ, Barbora FLAMIKOVÁ a Vít GLOSER

Základní údaje

Originální název

Effects of limited water availability on xylem transport in liana Humulus lupulus L

Autoři

JUPA, Radek (203 Česká republika, domácí), Lenka PLAVCOVÁ (203 Česká republika), Barbora FLAMIKOVÁ (203 Česká republika, domácí) a Vít GLOSER (203 Česká republika, garant, domácí)

Vydání

Environmental and Experimental Botany, Elsevier, 2016, 0098-8472

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30105 Physiology

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 4.369

Kód RIV

RIV/00216224:14310/16:00087951

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1016/j.envexpbot.2016.05.008

UT WoS

000381325000003

Klíčová slova anglicky

Drought; Hydraulic conductivity; Stem; Tyloses; Variable diameter; Vessel

Štítky

AKR, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 22. 11. 2017 14:11, doc. RNDr. Vít Gloser, Ph.D.

Anotace

V originále

The aim of this study was to investigate the effects of limited water availability imposed as repeated periods of drought and rehydration on xylem structure and function in stems of a commercially important climber (Humulus lupulus L.). To evaluate drought-induced changes in xylem characteristics, hydraulic measurements, silicone injection, and anatomical observations were performed in basal and apical regions of hop stems. We found that the total measured hydraulic conductivity (Kh) was about 8.5 times lower in the basal regions of drought-treated plants compared to well-watered control plants, especially due to vessel clogging with tyloses. In contrast, Kh of the apical parts of drought-treated plants was higher than in control plants as a result of the enhanced production of secondary xylem. We also observed differences in Kh response to sap ionic composition, with the highest ionic effect in the apical segments of control plants. Greater variation of inner vessel diameter, which increased the transport lumen resistivity of individual vessels by 7%, was another important consequence of irregular watering. The results of our study indicate that periodical fluctuations in water availability induce a significant reduction in total stem transport efficiency and increased risk of vessel dysfunction and illustrate the negative effects of limited water availability for water transport in hop plant stems.

Návaznosti

GA206/09/1967, projekt VaV

Název: Analysis of xylem hydraulic constraints on water status and gas exchange in hop plants

Investor: Grantová agentura ČR, Analýza omezujícího vlivu xylémového transportu na stav vody a výměnu plynů u rostlin chmele

Citovat

JUPA, Radek, Lenka PLAVCOVÁ, Barbora FLAMIKOVÁ a Vít GLOSER. Effects of limited water availability on xylem transport in liana Humulus lupulus L. Environmental and Experimental Botany. Elsevier, 2016, roč. 130, October, s. 22-32. ISSN 0098-8472. Dostupné z: https://dx.doi.org/10.1016/j.envexpbot.2016.05.008.

@article{1346331,
   author = {Jupa, Radek and Plavcová, Lenka and Flamiková, Barbora and Gloser, Vít},
   article_number = {October},
   doi = {http://dx.doi.org/10.1016/j.envexpbot.2016.05.008},
   keywords = {Drought; Hydraulic conductivity; Stem; Tyloses; Variable diameter; Vessel},
   language = {eng},
   issn = {0098-8472},
   journal = {Environmental and Experimental Botany},
   title = {Effects of limited water availability on xylem transport in liana Humulus lupulus L},
   volume = {130},
   year = {2016}
}

TY  - JOUR
ID  - 1346331
AU  - Jupa, Radek - Plavcová, Lenka - Flamiková, Barbora - Gloser, Vít
PY  - 2016
TI  - Effects of limited water availability on xylem transport in liana Humulus lupulus L
JF  - Environmental and Experimental Botany
VL  - 130
IS  - October
SP  - 22-32
EP  - 22-32
PB  - Elsevier
SN  - 00988472
KW  - Drought
KW  - Hydraulic conductivity
KW  - Stem
KW  - Tyloses
KW  - Variable diameter
KW  - Vessel
N2  - The aim of this study was to investigate the effects of limited water availability imposed as repeated periods of drought and rehydration on xylem structure and function in stems of a commercially important climber (Humulus lupulus L.). To evaluate drought-induced changes in xylem characteristics, hydraulic measurements, silicone injection, and anatomical observations were performed in basal and apical regions of hop stems. We found that the total measured hydraulic conductivity (Kh) was about 8.5 times lower in the basal regions of drought-treated plants compared to well-watered control plants, especially due to vessel clogging with tyloses. In contrast, Kh of the apical parts of drought-treated plants was higher than in control plants as a result of the enhanced production of secondary xylem. We also observed differences in Kh response to sap ionic composition, with the highest ionic effect in the apical segments of control plants. Greater variation of inner vessel diameter, which increased the transport lumen resistivity of individual vessels by 7%, was another important consequence of irregular watering. The results of our study indicate that periodical fluctuations in water availability induce a significant reduction in total stem transport efficiency and increased risk of vessel dysfunction and illustrate the negative effects of limited water availability for water transport in hop plant stems.
ER  -

JUPA, Radek, Lenka PLAVCOVÁ, Barbora FLAMIKOVÁ a Vít GLOSER. Effects of limited water availability on xylem transport in liana Humulus lupulus L. \textit{Environmental and Experimental Botany}. Elsevier, 2016, roč.~130, October, s.~22-32. ISSN~0098-8472. Dostupné z: https://dx.doi.org/10.1016/j.envexpbot.2016.05.008.

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