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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18470%2F16%3A50005371" target="_blank" >RIV/62690094:18470/16:50005371 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/16:00087951 RIV/00216208:11310/16:10327905

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S009884721630096X" target="_blank" >http://www.sciencedirect.com/science/article/pii/S009884721630096X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.envexpbot.2016.05.008" target="_blank" >10.1016/j.envexpbot.2016.05.008</a>

Result language

angličtina

Original language name

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

Original language description

The transport and distribution of water in the plant body are essential for plant growth and development. Although the negative effects of long-term drought on xylem water transport are generally known, our knowledge of the impacts of short-term periodical changes in water availability on xylem structure and function remains limited. 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 (K-h) 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, K-h 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 K-h 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.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EF - Botany

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Environmental and experimental botany

ISSN

0098-8472

e-ISSN

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Volume of the periodical

130

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

22-32

UT code for WoS article

000381325000003

EID of the result in the Scopus database

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