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Author Guo F., Zhang H., Liu W., Hu X., Han N., Qian Q., Xu L., Bian H.
Title Callus initiation from root explants employs different strategies in rice and Arabidopsis.
Abstract:
Callus formation in tissue culture follows the rooting pathway and newly formed callus seems to be a group of root primordium-like cells. However, it is not clear whether there are multiple mechanisms of callus initiation in different species and in different organs. Here we show that the OsIAA11-mediated pathway is specifically and strictly required for callus initiation in the lateral root (LR) formation region of the primary root (PR) but not for callus initiation at the root tip or the stem base in rice. OsIAA11 and its Arabidopsis homologue AtIAA14 are key players in lateral rooting. However, the AtIAA14-mediated pathway is not strictly required for callus initiation in the LR formation region in Arabidopsis. LRs can be initiated either through the AtIAA14-mediated or AtWOX11-mediated pathway in the Arabidopsis PR, therefore providing optional pathways for callus initiation. By contrast, OsIAA11 is strictly required for lateral rooting in the rice PR, meaning the OsIAA11 pathway is the only choice for callus initiation. Our study suggests that multiple pathways may converge to WOX5 activation during callus formation in different organs and different species.
Journal Plant Cell Physiol.
Country China
Volume
Pages
Year 2018
PubMed ID 29788450
PubMed Central ID -
DOI 10.1093/pcp/pcy095
URL -
Relation
Gene IAA11 QHB WOX11
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain
-
Stages in Each Organ
- Muant Lines (Gene)
-
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
/rice/oryzabase