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Respiratory burst oxidase homologs (RBOHs) constitute a multigene family in plants. These reactive oxygen species (ROS)-generating enzymes participate in diverse biological processes. We previously demonstrated that plays an important role in lateral root (LR) development in . However, little is known about the roles of other members in root development. Here, we report that is involved in LR emergence in . was expressed in wild-type root tissues, e.g., the radicle, inter LR zone, and LR zone, and its expression increased during LR formation. Analysis of the spatio-temporal expression patterns of a reporter construct under the control of the promoter (::GUS-GFP) in transgenic roots showed that was active at all three stages of LR development, but its spatial expression pattern varied at each stage. The relative expression levels of during LR formation correlated with the activity of promoter. Furthermore, upon transcript silencing, LR growth was significantly altered in transgenic hairy roots. These findings suggest that participates in LR initiation, emergence, and development in the legume by delimiting the region for LR emergence.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6067902 | PMC |
| http://dx.doi.org/10.1080/19420889.2018.1467188 | DOI Listing |
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