Comparison of hormonal responses to heat, drought and combined stress in tobacco plants with elevated proline content

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F10%3A00001229" target="_blank" >RIV/00027006:_____/10:00001229 - isvavai.cz</a>

Alternative codes found

RIV/61389030:_____/10:00350307 RIV/00216208:11310/10:10109427

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Comparison of hormonal responses to heat, drought and combined stress in tobacco plants with elevated proline content

Original language description

In order to test the possibility of improving tolerance to heat and drought (alone and in combination) by elevation of the osmoprotectant proline (Pro) content, stress responses were compared in tobacco plants constitutively over-expressing a gene for the Pro biosynthetic enzyme ?2-pyrroline-5-carboxylate synthetase (P5CSF129A; EC 2.7.2.11/1.2.1.41) and in the corresponding wild-type. Significantly enhanced Pro production in the transformant coincided with a more negative leaf osmotic potential. Heat stress (40 °C) caused a transient increase in the level of bioactive cytokinins accompanied by down-regulation of the activity of the main cytokinin degrading enzyme cytokinin oxidase/dehydrogenase (EC 1.4.3.18/1.5.99.12). Following drought stress, bioactive cytokinin levels decreased in the whole plants. Cytokinin suppression was less pronounced in Pro transformants. A greater increase in cytokinin content in Pro transformants indicated a mild elevation of their stress tolerance.

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

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2010

Confidentiality

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

Name of the periodical

Journal of Plant Physiology

ISSN

0176-1617

e-ISSN

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Volume of the periodical

167

Issue of the periodical within the volume

16

Country of publishing house

DE - GERMANY

Number of pages

11

Pages from-to

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UT code for WoS article

000283977600006

EID of the result in the Scopus database

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