... to the mother plant through vascular tissues. Their formation requires plant-specific genes, such as BREVIS RADIX ( BRX ) in Arabidopsis thaliana roots. BRX family proteins are found throughout the euphyllophytes but also occur in non-vascular bryophytes and non-seed lycophytes. They consist of four conserved...

... thaliana , H3K4-specific JUMONJI (JMJ) proteins distinguish themselves by the association with an F/Y-rich (FYR) domain. Here, we report that jmj14 mutations partially suppress reduced root meristem size and growth vigor of brevis radix ( brx ) mutants. Similar to its close homologs, JMJ15 , JMJ16...

...-autonomously to promote protophloem differentiation and restrict formative divisions in root meristems. Arabidopsis Root Brassinosteroid Phloem BRX OPS Brassinosteroids (BRs) were discovered as plant cell elongation and division stimulants. Although the principally active BR, brassinolide...

.... In brevis radix ( brx ) mutants, this response is impaired, probably indirectly because of disturbed crosstalk between the auxin and brassinosteroid pathways. Here we provide evidence that BRX protein is plasma membrane-associated, but translocates to the nucleus upon auxin treatment to modulate cellular...