findavur.blogg.se - Uvi model d

PIN activity is largely conserved within land plants, with PIN-mediated auxin flow providing a flexible mechanism to organise growth.

Most notably, Mp PIN1 is required to establish gemmaling dorsiventral polarity and for orthotropic growth of gametangiophore stalks, where Mp PIN1 is basally polarised. In M. polymorpha, Mp PIN1 influences development in numerous ways throughout its life cycle.

Overexpression of Mp PIN1 can partially complement loss of an orthologous gene, PIN-FORMED1, in Arabidopsis.

In M. polymorpha, gene expression and protein localisation were tracked using an Mp PIN1 transgene encoding a translationally fused fluorescent protein. To characterise MpPIN1, we created loss-of-function alleles and produced complementation lines in both M. polymorpha and Arabidopsis.Marchantia polymorpha possesses a single PIN-FORMED gene, whose protein product is predicted to be plasma membrane-localised, Mp PIN1. We provide the first characterisation of PIN proteins in liverworts using Marchantia polymorpha as a model system. PIN-FORMED auxin efflux transporters, a subclass of which is plasma membrane-localised, mediate a variety of land-plant developmental processes via their polar localisation and subsequent directional auxin transport.