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RCD1 and SRO1 are necessary to maintain meristematic fate in Arabidopsis thaliana by Sachin Teotia; Rebecca S. Lamb is a Agricultural and Biological Sciences article available to read on EtoBox.

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The __RADICAL-INDUCED CELL DEATH1__ and __SIMILAR TO RCD ONE1__ genes of __Arabidopsis thaliana__ encode members of the poly(ADP-ribose) polymerase (PARP) superfamily and have pleiotropic functions in development and abiotic stress response. In order to begin to understand the developmental and molecular bases of the defects seen in __rcd1-3; sro1-1__ plants, this study used the root as a model. Double mutant roots are short and display abnormally organized root apical meristems. However, acquisition of most cell fates within the root is not significantly disrupted. The identity of the quiescent centre is compromised, the zone of cell division is smaller than in wild-type roots and abnormal divisions are common, suggesting that __RCD1__ and __SRO1__ are necessary to maintain cells in a division-competent state and to regulate division plane placement. In addition, differentiation of several cell types is disrupted in __rcd1-3; sro1-1__ roots and shoots, demonstrating that __RCD1__ and __SRO1__ are also necessary for proper cell differentiation. Based on the data shown in this article and previous work, we hypothesize that RCD1 and SRO1 are involved in redox control and, in their ab

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Author

Sachin Teotia; Rebecca S. Lamb

Publisher

Oxford University Press; Oxford University Press (OUP) (ISSN 0022-0957)

Published

2010

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)