Short-term salt stress in Brassica rapa seedlings causes alterations in auxin metabolism
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F18%3A73592212" target="_blank" >RIV/61989592:15310/18:73592212 - isvavai.cz</a>
Alternative codes found
RIV/61389030:_____/18:00489040
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0981942818300329" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0981942818300329</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.plaphy.2018.01.026" target="_blank" >10.1016/j.plaphy.2018.01.026</a>
Alternative languages
Result language
angličtina
Original language name
Short-term salt stress in Brassica rapa seedlings causes alterations in auxin metabolism
Original language description
Salinity is one of major abiotic stresses affecting Brassica crop production. Here we present investigations into the physiological, biochemical, and hormonal components of the short-term salinity stress response in Chinese cabbage seedlings, with particular emphasis on the biosynthesis and metabolism of auxin indole-3-acetic acid (IAA). Upon salinity treatments (50-200 mM NaCl) IAA level was elevated in a dose dependent manner reaching 1.6-fold increase at the most severe salt treatment in comparison to the control. IAA precursor profiling suggested that salinity activated the indole-3-acetamide and indole-3-acetaldoxime biosynthetic pathways while suppressing the indole-3-pyruvic acid pathway. Levels of the IAA catabolites 2-oxoindole-3-acetic acid and indole-3-acetic acid-aspartate increased 1.7- and 2.0-fold, respectively, under the most severe treatment, in parallel with those of IAA. Conversely, levels of the ester conjugate indole-3-acetyl-1-O-beta-d-glucose and its catabolite 2-oxoindole-3-acetyl-1-O-B-d-glucose decreased 2.5- and 7.0-fold, respectively. The concentrations of stress hormones including jasmonic acid and jasmonoyl-isoleucine (JA and JA-Ile), salicylic acid (SA) and abscisic acid (ABA) confirmed the stress induced by salt treatment: levels of JA and JA-Ile increased strongly under the mildest treatment, ABA only increased under the most severe treatment, and SA levels decreased dose-dependently. These hormonal changes were related to the observed changes in biochemical stress markers upon salt treatments: reductions in seedling fresh weight and root growth, decreased photosynthesis rate, increased levels of reactive oxygen species, and elevated proline content and the Na+/K+ ratio. Correlations among auxin profile and biochemical stress markers were discussed based on Pearson's coefficients and principal component analysis (PCA).
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
125
Issue of the periodical within the volume
APR
Country of publishing house
FR - FRANCE
Number of pages
11
Pages from-to
74-84
UT code for WoS article
000428832200008
EID of the result in the Scopus database
2-s2.0-85041546537