Hydrogen Peroxide Is Involved in β-Cyclodextrin-hemin Complex-Induced Lateral Root Formation in Tomato Seedlings.

ABSTRACT: Although previous results showed that β-cyclodextrin-hemin complex (β-CDH) could induce tomato lateral root (LR) formation, the corresponding downstream messengers are still not fully understood. In this report, similar to the inducing effects of exogenously applied hydrogen peroxide (H₂O₂), we discovered that β-CDH elicited RBOH1 transcript upregulation, endogenous H₂O₂ accumulation, and thereafter tomato LR development. Above responses were sensitive to dimethylthiourea (DMTU) and ascorbic acid (AsA), two membrane-permeable scavengers of H₂O₂, showing that accumulation of H₂O₂ and LR formation were significantly blocked. The test with diphenyleneiodonium (DPI; the inhibitor

SUBMITTER: Cui W 

PROVIDER: S-EPMC5563380 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature