Maternal auxin supply contributes to early embryo patterning in Arabidopsis
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F18%3A00101054" target="_blank" >RIV/00216224:14740/18:00101054 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/61389030:_____/18:00494179 RIV/61989592:15310/18:73592334
Výsledek na webu
<a href="http://dx.doi.org/10.1038/s41477-018-0204-z" target="_blank" >http://dx.doi.org/10.1038/s41477-018-0204-z</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41477-018-0204-z" target="_blank" >10.1038/s41477-018-0204-z</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Maternal auxin supply contributes to early embryo patterning in Arabidopsis
Popis výsledku v původním jazyce
The angiosperm seed is composed of three genetically distinct tissues: the diploid embryo that originates from the fertilized egg cell, the triploid endosperm that is produced from the fertilized central cell, and the maternal sporophytic integuments that develop into the seed coat(1). At the onset of embryo development in Arabidopsis thaliana, the zygote divides asymmetrically, producing a small apical embryonic cell and a larger basal cell that connects the embryo to the maternal tissue(2). The coordinated and synchronous development of the embryo and the surrounding integuments, and the alignment of their growth axes, suggest communication between maternal tissues and the embryo. In contrast to animals, however, where a network of maternal factors that direct embryo patterning have been identified(3,4), only a few maternal mutations have been described to affect embryo development in plants(5-7). Early embryo patterning in Arabidopsis requires accumulation of the phytohormone auxin in the apical cell by directed transport from the suspensors(8-10). However, the origin of this auxin has remained obscure. Here we investigate the source of auxin for early embryogenesis and provide evidence that the mother plant coordinates seed development by supplying auxin to the early embryo from the integuments of the ovule. We show that auxin response increases in ovules after fertilization, due to upregulated auxin biosynthesis in the integuments, and this maternally produced auxin is required for correct embryo development.
Název v anglickém jazyce
Maternal auxin supply contributes to early embryo patterning in Arabidopsis
Popis výsledku anglicky
The angiosperm seed is composed of three genetically distinct tissues: the diploid embryo that originates from the fertilized egg cell, the triploid endosperm that is produced from the fertilized central cell, and the maternal sporophytic integuments that develop into the seed coat(1). At the onset of embryo development in Arabidopsis thaliana, the zygote divides asymmetrically, producing a small apical embryonic cell and a larger basal cell that connects the embryo to the maternal tissue(2). The coordinated and synchronous development of the embryo and the surrounding integuments, and the alignment of their growth axes, suggest communication between maternal tissues and the embryo. In contrast to animals, however, where a network of maternal factors that direct embryo patterning have been identified(3,4), only a few maternal mutations have been described to affect embryo development in plants(5-7). Early embryo patterning in Arabidopsis requires accumulation of the phytohormone auxin in the apical cell by directed transport from the suspensors(8-10). However, the origin of this auxin has remained obscure. Here we investigate the source of auxin for early embryogenesis and provide evidence that the mother plant coordinates seed development by supplying auxin to the early embryo from the integuments of the ovule. We show that auxin response increases in ovules after fertilization, due to upregulated auxin biosynthesis in the integuments, and this maternally produced auxin is required for correct embryo development.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10604 - Reproductive biology (medical aspects to be 3)
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2018
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
NATURE PLANTS
ISSN
2055-026X
e-ISSN
—
Svazek periodika
4
Číslo periodika v rámci svazku
8
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
6
Strana od-do
548-553
Kód UT WoS článku
000443861300011
EID výsledku v databázi Scopus
2-s2.0-85049933562