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- Title
BRS1 Function in Facilitating Lateral Root Emergence in Arabidopsis.
- Authors
Qian Deng; Xue Wang; Dongzhi Zhang; Xiaoming Wang; Cuizhu Feng; Shengbao Xu
- Abstract
The BRS1 (BRI1 Suppressor 1) gene encodes a serine carboxypeptidase that plays a critical role in the brassinosteroid signaling pathway. However, its specific biological function remains unclear. In this study, the developmental role of BRS1 was investigated in Arabidopsis thaliana. We found that overexpressing BRS1 resulted in significantly more lateral roots in different Arabidopsis ecotypes (WS2 and Col-0) and in brassinosteroid mutants (bri1-5 and det2-28). Further research showed that BRS1 facilitates the process whereby lateral root primordia break through the endodermis, cortex, and epidermis. Consistent with this, BRS1 was found to be highly expressed in the root endodermis and accumulated in the extracellular space around the dome of the lateral root primordia. Taken together, these results highlight the role of BRS1 in the process of lateral root emergence and provide new insight into the role of serine carboxypeptidases in plant root development.
- Subjects
PLANT roots; ARABIDOPSIS; ARABIDOPSIS thaliana; CARBOXYPEPTIDASES; BRASSINOSTEROIDS; CORTEX (Botany); EPIDERMIS
- Publication
International Journal of Molecular Sciences, 2017, Vol 18, Issue 7, p1549
- ISSN
1661-6596
- Publication type
Article
- DOI
10.3390/ijms18071549