2006
DOI: 10.1093/pcp/pci240
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Abstract: Plants alter the architecture of their root systems to adapt to the environment by modulating post-embryonic (lateral and adventitious) root formation and growth. To understand better the genetic basis of this regulation, we screened ethylmethane sulfonate-mutagenized lines of Arabidopsis thaliana for adventitious rooting mutants. One mutant showed retardation of the primary root growth, no production of lateral roots and enhanced formation of adventitious roots. Mapping and genetic complementation revealed th… Show more

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Cited by 37 publications
(35 citation statements)
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“…This idea is supported experimentally, because treatment with exogenous cytokinins results in strong suppression of adventitious root formation (Bollmark and Eliasson, 1986;De Klerk et al, 2001). Consistent with these results, the cytokinin receptor mutant arabidopsis histidine kinase4 (ahk4) and plants overexpressing either CYTOKININ OXIDASE1 (CKX1) or CKX2, resulting in higher breakdown of cytokinin, display enhanced adventitious root production (Werner et al, 2003;Lohar et al, 2004;Kuroha et al, 2006, Riefler et al, 2006. Similarly, fewer adventitious roots are formed on cuttings of petunia (Petunia hybrida) or tomato (Solanum lycopersicum) that have enhanced cytokinin synthesis due to the overexpression of an ISOPENTENYLTRANSFER-ASE gene (Groot et al, 1995;Clark et al, 2004).…”
mentioning
confidence: 66%
“…This idea is supported experimentally, because treatment with exogenous cytokinins results in strong suppression of adventitious root formation (Bollmark and Eliasson, 1986;De Klerk et al, 2001). Consistent with these results, the cytokinin receptor mutant arabidopsis histidine kinase4 (ahk4) and plants overexpressing either CYTOKININ OXIDASE1 (CKX1) or CKX2, resulting in higher breakdown of cytokinin, display enhanced adventitious root production (Werner et al, 2003;Lohar et al, 2004;Kuroha et al, 2006, Riefler et al, 2006. Similarly, fewer adventitious roots are formed on cuttings of petunia (Petunia hybrida) or tomato (Solanum lycopersicum) that have enhanced cytokinin synthesis due to the overexpression of an ISOPENTENYLTRANSFER-ASE gene (Groot et al, 1995;Clark et al, 2004).…”
mentioning
confidence: 66%
“…Because these lines also exhibit altered vascular development Kuroha et al, 2006;Mä hö nen et al, 2006;Yokoyama et al, 2007), we characterized the vasculature of type B ARR mutants ( Figures 3E and 3F). In wild-type Arabidopsis roots, xylem vessels are found as more centrally located metaxylem (A) Root elongation responsiveness to cytokinin of arr mutants.…”
Section: Effects Of Type B Arr Mutants On Root Elongationmentioning
confidence: 99%
“…Making roots de novo requires generating the different tissues and cell types of the new organ. All roots have the same tissues, although the number of layers and cells types of these may vary (Kuroha et al, 2006;Lucas et al, 2011). Tissues are continuously formed by asymmetric division of initial cells, which are stem cells, followed by proliferative divisions of their daughter meristematic cells.…”
mentioning
confidence: 99%