English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Background  Legumes can utilize atmospheric nitrogen by hosting nitrogen-fixing bacteria in special lateral root organs, called nodules. Legume nodules have a unique ontology, despite similarities in the gene networks controlling nodule and lateral root development. It has been shown that  Medicago truncatula NODULE ROOT1  ( MtNOOT1 ) is required for the maintenance of nodule identity, preventing the conversion to lateral root development.  MtNOOT1  and its orthologs in other plant species -collectively called the NOOT-BOP-COCH-LIKE (NBCL) family- specify boundary formation in various aerial organs. However,  MtNOOT1  is not only expressed in nodules and aerial organs, but also in developing roots, where its function remains elusive.    Results  We show that  Mtnoot1  mutant seedlings display accelerated root elongation due to an enlarged root apical meristem. Also,  Mtnoot1  mutant roots are thinner than wild-type and are delayed in xylem cell differentiation. We provide molecular evidence that the affected spatial development of  Mtnoot1  mutant roots correlates with delayed induction of genes involved in xylem cell differentiation. This coincides with a basipetal shift of the root zone that is susceptible to rhizobium-secreted symbiotic signal molecules.    Conclusions  Our data show that  MtNOOT1  regulates the size of the root apical meristem and vascular differentiation. Our data demonstrate that  MtNOOT1  not only functions as a homeotic gene in nodule development but also coordinates the spatial development of the root.

The Medicago truncatula nodule identity gene MtNOOT1 is required for coordinated apical-basal development of the root