Novak, Ondrej
- Institutionen för skoglig genetik och växtfysiologi, Sveriges lantbruksuniversitet
- Univerzity Palackého v Olomouci
Sammanfattning
Coordination of cell division and pattern formation is central to tissue and organ development, particularly in plants where walls prevent cell migration. Auxin and cytokinin are both critical for division and patterning, but it is unknown how these hormones converge upon tissue development. We identify a genetic network that reinforces an early embryonic bias in auxin distribution to create a local, nonresponding cytokinin source within the root vascular tissue. Experimental and theoretical evidence shows that these cells act as a tissue organizer by positioning the domain of oriented cell divisions. We further demonstrate that the auxin-cytokinin interaction acts as a spatial incoherent feed-forward loop, which is essential to generate distinct hormonal response zones, thus establishing a stable pattern within a growing vascular tissue.
Publicerad i
Science
2014, volym: 345, nummer: 6197, artikelnummer: 1255215
Utgivare: AMER ASSOC ADVANCEMENT SCIENCE
SLU författare
Ljung, Karin
- Institutionen för skoglig genetik och växtfysiologi, Sveriges lantbruksuniversitet
- Institutionen för skoglig genetik och växtfysiologi, Sveriges lantbruksuniversitet
UKÄ forskningsämne
Botanik
Cell- och molekylärbiologi
Publikationens identifierare
- DOI: https://doi.org/10.1126/science.1255215
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/67883