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The rolD oncogene promotes axillary bud and adventitious root meristems in Arabidopsis
The rolD oncogene promotes axillary bud and adventitious root meristems in Arabidopsis
- Source :
- Plant Physiology and Biochemistry. 48:797-804
- Publication Year :
- 2010
- Publisher :
- Elsevier BV, 2010.
-
Abstract
- The expression of the Agrobacterium rhizogenes rolD oncogene induces precocious floral transition and strong flowering potential in tobacco and tomato. Here, we describe specific developmental effects induced by expression of rolD in Arabidopsis. We show that floral transition, as histologically monitored, occurred in rolD- plants earlier than in wild type, and this was coupled with a premature and enhanced formation of vegetative and reproductive axillary bud meristems. Furthermore, CYP79F1/SUPERSHOOT/BUSHY (SPS), a gene that negatively controls shoot branching in Arabidopsis and involved in glucosinolate metabolism and in cytokinin and auxin homeostasis, was down-regulated in rolD plants. The multiplication of post-embryonic meristems was also observed in the root system, with enhanced adventitious root formation. This result was confirmed by thin cell layer response in vitro, both under hormone-free and standard rooting conditions. However, the formation of lateral root meristems was not affected by rolD expression. Our results show that rolD accelerates and enhances specific post-embryonic meristems in Arabidopsis.
- Subjects :
- Physiology
Meristem
Arabidopsis
Flowers
Plant Science
adventitious roots
Plant Roots
chemistry.chemical_compound
Bacterial Proteins
Cytochrome P-450 Enzyme System
Gene Expression Regulation, Plant
Auxin
Axillary bud
axillary buds
Botany
Genetics
Arabidopsis thaliana
chemistry.chemical_classification
Plant Stems
biology
Auxin homeostasis
Reverse Transcriptase Polymerase Chain Reaction
fungi
Lateral root
Gene Expression Regulation, Developmental
food and beverages
post-embryonic meristems
Plants, Genetically Modified
biology.organism_classification
rold
Plant Leaves
Phenotype
chemistry
Cytokinin
Plant Shoots
Rhizobium
Subjects
Details
- ISSN :
- 09819428
- Volume :
- 48
- Database :
- OpenAIRE
- Journal :
- Plant Physiology and Biochemistry
- Accession number :
- edsair.doi.dedup.....e1c1f25c0a43b6824f6f88a46bba6adb
- Full Text :
- https://doi.org/10.1016/j.plaphy.2010.06.002