TIME FOR COFFEE controls root meristem size by changes in auxin accumulation in Arabidopsis.

ABSTRACT: Roots play important roles in plant survival and productivity as they not only anchor the plants in the soil but are also the primary organ for the uptake of nutrients from the outside. The growth and development of roots depend on the specification and maintenance of the root meristem. Here, we report a previously unknown role of TIME FOR COFFEE (TIC) in controlling root meristem size in Arabidopsis. The results showed that loss of function of TIC reduced root meristem length and cell number by decreasing the competence of meristematic cells to divide. This was due to the repressed expression of PIN genes for decreased acropetal auxin transport in tic-2, leading to low auxin accumulation in the roots responsible for reduced root meristem, which was verified by exogenous application of ind

SUBMITTER: Hong LW 

PROVIDER: S-EPMC3883298 | biostudies-literature | 2014 Jan

REPOSITORIES: biostudies-literature