Blue light suppression alters cytokinin homeostasis in wheat leaves senescing under shading stress
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F18%3A00495316" target="_blank" >RIV/61389030:_____/18:00495316 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/18:73591292
Result on the web
<a href="http://dx.doi.org/10.1016/j.plaphy.2018.08.005" target="_blank" >http://dx.doi.org/10.1016/j.plaphy.2018.08.005</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.plaphy.2018.08.005" target="_blank" >10.1016/j.plaphy.2018.08.005</a>
Alternative languages
Result language
angličtina
Original language name
Blue light suppression alters cytokinin homeostasis in wheat leaves senescing under shading stress
Original language description
Blue light (BL) suppression accelerates the senescence rate of wheat (Triticum aestivum L.) leaves exposed to shading. In order to study whether this effect involves the alteration of different cytokinin (CK) metabolites, CK-degradation, as well as the expression profile of genes responsible of CK-perception,inactivation,reactivation and/orturnover, leaf segments of 30 day-old plants were placed in boxes containing bi-distilled water and covered with blue (B) or green (G) light filters, which supplied a similar irradiance but differed in the percentage of BL transmitted (G < < B). A neutral (N) filter was used as control. When appropriate, different CK metabolites or an inhibitor of CK-degradation were added in order to alter the endogenous CK levels. A rapid decrement of trans-zeatin (tZ) and cis-zeatin (cZ) content was observed after leaf excision, which progressed at a higher rate in treatment G than in the control and B treatments. Senescence progression correlated with an accumulation of glycosylated forms (particularly cZ-derivatives), and an increment of CK-degradation, both of which were slowed in the presence of BL. On the contrary, CK-reactivation (analyzed through TaGLU1-3 expression) was delayed in the absence of BL. When different CK were exogenously supplied, tZ was the only natural free base capable to emulate the senescence-retarding effect of BL. Even though the signaling components involved in the regulation of senescence rate and CK-homeostasis by BL remain elusive, our data suggest that changes in the expression profile and/or functioning of the transcription factor HY5 might play an important role.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10611 - Plant sciences, botany
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Plant Physiology and Biochemistry
ISSN
0981-9428
e-ISSN
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Volume of the periodical
130
Issue of the periodical within the volume
SEP
Country of publishing house
FR - FRANCE
Number of pages
11
Pages from-to
647-657
UT code for WoS article
000444789200063
EID of the result in the Scopus database
2-s2.0-85051798657