Endogenous Hypoxia in Lateral Root Primordia Controls Root Architecture by Antagonizing Auxin Signaling in Arabidopsis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F19%3A00504104" target="_blank" >RIV/61389030:_____/19:00504104 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/19:73598568

Result on the web

<a href="http://doi.org/10.1016/j.molp.2019.01.007" target="_blank" >http://doi.org/10.1016/j.molp.2019.01.007</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.molp.2019.01.007" target="_blank" >10.1016/j.molp.2019.01.007</a>

Result language

angličtina

Original language name

Endogenous Hypoxia in Lateral Root Primordia Controls Root Architecture by Antagonizing Auxin Signaling in Arabidopsis

Original language description

As non-photosynthesizing organs, roots are dependent on diffusion of oxygen from the external environment and, in some instances, from the shoot for their aerobic metabolism. Establishment of hypoxic niches in the developing tissues of plants has been postulated as a consequence of insufficient diffusion of oxygen to satisfy the demands throughout development. Here, we report that such niches are established at specific stages of lateral root primordia development in Arabidopsis thaliana grown under aerobic conditions. Using gain- and loss-of-function mutants, we show that ERF-VII transcription factors, which mediate hypoxic responses, control root architecture by acting in cells with a high level of auxin signaling. ERF-VIIs repress the expression of the auxin-induced genes LBD16, LBD18, and PUCHI, which are essential for lateral root development, by binding to their promoters. Our results support a model in which the establishment of hypoxic niches in the developing lateral root primordia contributes to the shutting down of key auxin-induced genes and regulates the production of lateral roots. This study shows that reduced oxygen availability marks lateral root primordia at late developmental stages in Arabidopsis. Exploiting transgenic plants with altered hypoxia responsiveness, it was established that the local activation of ERF-VII transcription factors by low oxygen antagonizes auxin responses and contributes to terminating the primordium development, thus achieving optimal root system architecture.

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

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OECD FORD branch

10611 - Plant sciences, botany

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Molecular Plant

ISSN

1674-2052

e-ISSN

—

Volume of the periodical

12

Issue of the periodical within the volume

4

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

538-551

UT code for WoS article

000462878700010

EID of the result in the Scopus database

2-s2.0-85062804372