Growth of the Arabidopsis sub-epidermal integument cell layers might require an endosperm signal

Sammanfattning

The seed, the reproductive unit of angiosperms, is physically protected by the seed coat. The seed coat develops from the ovule integuments after fertilization. The Arabidopsis ovule integuments are made of 5-6 cell layers of epidermal and sub-epidermal origin. The growth of the epidermal integument cell layers responds to an endosperm signal mediated by the AGAMOUS-LIKE 62 MADS box transcription factor with limited embryo contribution. By contrast, the sub-epidermal integument cell layers require the embryo to expand whereas the role of the endosperm is still unclear. Here, we analyzed the development of the subepidermal integument cell layers in agl62 mutant seeds, which undergo premature endosperm cellularization and arrest. Our data suggest that embryo and endosperm are both necessary to trigger the expansion of the sub-epidermal integument cell layers.

Nyckelord

Fertilization; integuments; seed coat; seed development; tissue cross-talk

Publicerad i

Plant Signaling and Behavior
2017, volym: 12, nummer: 8, artikelnummer: e1339000

SLU författare

• Xu, Wenjia

  • Université Paris-Saclay

UKÄ forskningsämne

Genetik och förädling inom lantbruksvetenskap

Publikationens identifierare

• DOI: https://doi.org/10.1080/15592324.2017.1339000

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/99986