2018
Maternal auxin supply contributes to early embryo patterning in Arabidopsis
ROBERT BOISIVON, Helene; Chulmin PARK; Carla Loreto GUITERREZ; externista BARBARA WÓJCIKOWSKA; Ales PENCIK et al.Základní údaje
Originální název
Maternal auxin supply contributes to early embryo patterning in Arabidopsis
Autoři
ROBERT BOISIVON, Helene ORCID; Chulmin PARK; Carla Loreto GUITERREZ; externista BARBARA WÓJCIKOWSKA; Ales PENCIK; Ondrej NOVAK; Junyi CHEN; Wim GRUNEWALD; Thomas DRESSELHAUS; Jiří FRIML a Thomas LAUX
Vydání
NATURE PLANTS, LONDON, NATURE PUBLISHING GROUP, 2018, 2055-026X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10604 Reproductive biology
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 13.297
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14740/18:00101054
Organizační jednotka
Středoevropský technologický institut
UT WoS
EID Scopus
Klíčová slova anglicky
Arabidopsis thaliana; maize; auxin; auxin biosynthesis; embryogenesis; maternal sporophytic effect
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 30. 4. 2019 09:01, Mgr. Pavla Foltynová, Ph.D.
Anotace
V originále
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.
Návaznosti
| GA13-40637S, projekt VaV |
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| LM2015062, projekt VaV |
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| LQ1601, projekt VaV |
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| MUNI/E/0101/2017, interní kód MU |
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| 3SGA5602, interní kód MU |
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