Organ-specific hormonal cross-talk in phosphate deficiency

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F18%3A00004943" target="_blank" >RIV/00027006:_____/18:00004943 - isvavai.cz</a>

Alternative codes found

RIV/61389030:_____/18:00493320 RIV/00216208:11320/18:10380297 RIV/00216208:11310/18:10380297

Result on the web

<a href="http://dx.doi.org/10.1016/j.envexpbot.2018.05.020" target="_blank" >http://dx.doi.org/10.1016/j.envexpbot.2018.05.020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.envexpbot.2018.05.020" target="_blank" >10.1016/j.envexpbot.2018.05.020</a>

Result language

angličtina

Original language name

Organ-specific hormonal cross-talk in phosphate deficiency

Original language description

Plant interactions with the environment, including nutrient sensing and acquisition, are regulated by plant hormones. Responses to phosphate (Pi) deficiency are governed by strigolactones, in cross-talk with other hormones. Reaction of Arabidopsis thaliana plants to Pi deficiency has been characterized in shoot apices, leaves and roots at hormonal and selected transcript levels. Pi starvation was associated with elevation of abscisic acid and jasmonic acid in all followed organs, as well as of salicylic acid in roots. Stimulation of strigolactone signaling pathway was indicated by suppressed expression of strigolactone repressors SMXL6 and SMXL8. Simultaneously, Pi deficiency downregulated the levels of gibberellin GA(4) and the most physiologically active cytokinin, trans-zeatin, in all studied organs, increasing less active cis-zeatin in roots. Data imply suppression of the plastid cytokinin biosynthetic pathway and promotion of the cytoplasmic one. Strigolactone function has been characterized comparing the effect of 5 mu M synthetic strigolactone GR24 at Pi deficiency and full Pi supply (100 mu M). GR24 promoted Pi uptake, including expression of Pi transporters PHT1;4 and PHT1;7. GR24 in Pi presence generally mimicked the impact of Pi deficiency in roots, with exception of jasmonic acid and salicylic acid, which were in full Pi medium, i.e. under conditions optimal for growth, decreased. Pi availability strongly affected expression of selected genes in apices, the major differences being found in the expression of Pi transporters, auxin- and strigolactone-related genes. The data show highly organ-specific effects of Pi deficiency and decisive role of strigolactones, not only in roots but also in apices.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10611 - Plant sciences, botany

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Name of the periodical

Environmental and Experimental Botany

ISSN

0098-8472

e-ISSN

1873-7307

Volume of the periodical

153

Issue of the periodical within the volume

SEP 2018

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

198-208

UT code for WoS article

000439403200020

EID of the result in the Scopus database

2-s2.0-85048564793