Silicon promotes cytokinin biosynthesis and delays senescence in Arabidopsis and Sorghum
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73584140" target="_blank" >RIV/61989592:15310/17:73584140 - isvavai.cz</a>
Alternative codes found
RIV/00027006:_____/17:00004122
Result on the web
<a href="http://onlinelibrary.wiley.com/doi/10.1111/pce.12913/epdf" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1111/pce.12913/epdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/pce.12913" target="_blank" >10.1111/pce.12913</a>
Alternative languages
Result language
angličtina
Original language name
Silicon promotes cytokinin biosynthesis and delays senescence in Arabidopsis and Sorghum
Original language description
Silicate minerals are dominant soil components. Thus, plant roots are constantly exposed to silicic acid. High silicon intake, enabled by root silicon transporters, correlates with increased tolerance to many biotic and abiotic stresses. However, the underlying protection mechanisms are largely unknown. Here, we tested the hypothesis that silicon interacts with the plant hormones, and specifically, that silicic acid intake increases cytokinin biosynthesis. The reaction of sorghum (Sorghum bicolor) and Arabidopsis plants, modified to absorb high versus low amounts of silicon, to dark-induced senescence was monitored, by quantifying expression levels of genes along the senescence pathway and measuring tissue cytokinin levels. In both species, detached leaves with high silicon content senesced more slowly than leaves that were not exposed to silicic acid. Expression levels of genes along the senescence pathway suggested increased cytokinin biosynthesis with silicon exposure. Mass spectrometry measurements of cytokinin suggested a positive correlation between silicon exposure and active cytokinin concentrations. Our results indicate a similar reaction to silicon treatment in distantly related plants, proposing a general function of silicon as a stress reliever, acting via increased cytokinin biosynthesis.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10608 - Biochemistry and molecular biology
Result continuities
Project
<a href="/en/project/LO1204" target="_blank" >LO1204: Sustainable development of research in the Centre of the Region Haná</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Plant, Cell and Environment
ISSN
0140-7791
e-ISSN
—
Volume of the periodical
40
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
1189-1196
UT code for WoS article
000402737300016
EID of the result in the Scopus database
2-s2.0-85017291889