Adventitious rooting declines with the vegetative to reproductive switch and involves a changed auxin homeostasis.

ABSTRACT: Adventitious rooting, whereby roots form from non-root tissues, is critical to the forestry and horticultural industries that depend on propagating plants from cuttings. A major problem is that age of the tissue affects the ability of the cutting to form adventitious roots. Here, a model system has been developed using Pisum sativum to differentiate between different interpretations of ageing. It is shown that the decline in adventitious rooting is linked to the ontogenetic switch from vegetative to floral and is mainly attributed to the cutting base. Using rms mutants it is demonstrated that the decline is not a result of increased strigolactones inhibiting adventitious root formation. Monitoring endogenous levels of a range of other hormones including a range of cytokinins in the rooting

SUBMITTER: Rasmussen A 

PROVIDER: S-EPMC4339602 | biostudies-literature | 2015 Mar

REPOSITORIES: biostudies-literature