<i>BvBZR1</i> improves parenchyma cell development and sucrose accumulation in sugar beet (<i>Beta vulgaris</i> L.) taproot.

ABSTRACT: BRASSINAZOLE-RESISTANT (BZR) transcription factors, key elements of brassinolide (BR) signal transduction, play an important role in regulating plant growth and development. However, little is known about the molecular regulatory mechanism of BZR in sugar beet taproot growth. In this study, BvBZR1 expression was significantly induced by exogenous BR treatment. Transgenic sugar beet overexpressing BvBZR1 exhibited a higher taproot diameter compared with the wild type, mainly due to a significant enhancement in the spacing between cambial rings by increasing the size and layers of parenchyma cells. BvBZR1 regulated the expression of BvCESA6, BvXTH33, BvFAD3, and BvCEL1 and enhanced cell wall metabolism to promote sugar beet taproot growth in p

SUBMITTER: Li N 

PROVIDER: S-EPMC11830749 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature