MARC details
| 000 -LEADER |
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| fixed length control field |
03174nam a22002777a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
ZW-GwMSU |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20250305141151.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
250305b |||||||| |||| 00| 0 eng d |
| 022 ## - INTERNATIONAL STANDARD SERIAL NUMBER |
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| International Standard Serial Number |
0176-1617 |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
MSU |
| Language of cataloging |
English |
| Transcribing agency |
MSU |
| Description conventions |
rda |
| 050 00 - LIBRARY OF CONGRESS CALL NUMBER |
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| Classification number |
QK711.2 JOU |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Königshofer, Helga |
| Relator term |
author |
| 245 10 - TITLE STATEMENT |
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| Title |
Regulation of invertase activity in different root zones of wheat (Triticum aestivum L.) seedlings in the course of osmotic adjustment under water deficit conditions |
| Statement of responsibility, etc. |
created by Helga Königshofer , Hans-Georg Löppert |
| 264 ## - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
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| Place of production, publication, distribution, manufacture |
Amsterdam: |
| Name of producer, publisher, distributor, manufacturer |
Elsevier GmbH, |
| Date of production, publication, distribution, manufacture, or copyright notice |
2015. |
| 336 ## - CONTENT TYPE |
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| Source |
rdacontent |
| Content type term |
text |
| Content type code |
txt |
| 337 ## - MEDIA TYPE |
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| Source |
rdamedia |
| Media type term |
unmediated |
| Media type code |
n |
| 338 ## - CARRIER TYPE |
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| Source |
rdacarrier |
| Carrier type term |
volume |
| Carrier type code |
nc |
| 440 ## - SERIES STATEMENT/ADDED ENTRY--TITLE |
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| Title |
Journal of plant physiology |
| Volume/sequential designation |
Volume 183 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Osmotic adjustment of roots is an essential adaptive mechanism to sustain water uptake and root growth under water deficit. In this paper, the role of invertases (β-fructofuranosidase, EC 3.2.1.26) in osmotic adjustment was investigated in the root tips (cell division and elongation zone) and the root maturation zone of wheat (Triticum aestivum L. cv. Josef) in the course of osmotic stress imposed by 20% polyethylene glycol (PEG) 6000. The two root zones investigated differed distinctly in the response of invertases to water deprivation. In the root tips, the activity of the vacuolar and cell wall-bound invertases increased markedly under water stress resulting in the accumulation of hexoses (glucose and fructose) that contributed significantly to osmotic adjustment. A transient rise in hydrogen peroxide (H2O2) preceded the enhancement of invertases upon exposure to osmotic stress. Treatment with the NADPH oxidase inhibitor diphenylene iodonium (DPI) abolished the stress induced H2O2 production and suppressed the stimulation of the vacuolar invertase activity, whereas the activity of the cell wall-bound invertase was not influenced by DPI. As a consequence of the inhibitory effect of DPI on the vacuolar invertase, hexose levels and osmotic adjustment were also markedly decreased in the root tips under water deficit in the presence of DPI. These data suggest that H2O2 probably generated by a NADPH oxidase is required as a signalling molecule for the up-regulation of the vacuolar invertase activity in the root tips under osmotic stress, thereby enhancing the capacity for osmotic adjustment. In the root maturation zone, an early H2O2 signal could not be detected in response to PEG application. Only an increase in the glucose level that was not paralleled by fructose and a slight stimulation of the activity of the vacuolar invertase occurred in the maturation zone after water deprivation. The stress induced accumulation of glucose in the maturation zone was not affected by DPI and thus seems to be not regulated by NADPH oxidase-derived H2O2. Altogether, osmotic adjustment was considerably smaller in the maturation zone than in the root tips. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Hexoses |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Hydrogen peroxide |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Invertase activity |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Löppert, Hans-Georg |
| Relator term |
co-author |
| 856 ## - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
https://doi.org/10.1016/j.jplph.2015.06.005 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Journal Article |