The shoot apical meristem of angiosperm plants generates leaf, stem and floral structures
throughout the plant's lifetime. To do this, the plant must maintain a population of stem cells …

Transmembrane receptor kinases (RKs) mediate signal transduction pathways leading to
cell proliferation, growth, and diVerentiation in animals. The crucial function of RKs is …

Shoot meristems of plants are composed of stem cells that are continuously replenished
through a classical feedback circuit involving the homeobox WUSCHEL (WUS) gene and …

Abstract MicroRNAs are 19-to 22-nucleotide small noncoding RNAs that have been
implicated in abiotic stress responses. In this study, we found that knockdown of …

Plant RHO GTPases (RAC/ROPs) mediate multiple extracellular signals ranging from
hormone to stress and regulate diverse cellular processes important for polarized cell …

A central unanswered question in stem cell biology, both in plants and in animals, is how the
spatial organization of stem cell niches are maintained as cells move through them. We …

The Arabidopsis thaliana genome contains five class III homeodomain-leucine zipper
genes. We have isolated loss-of-function alleles for each family member for use in genetic …

Morphological plasticity of root systems is critically important for plant survival because it
allows plants to optimize their capacity to take up water and nutrients from the soil …

The niches of the Arabidopsis shoot and root meristems, the organizing center (OC) and the
quiescent center (QC), orchestrate the fine balance of stem cell maintenance and the …

Stem cells in shoot and floral meristems of Arabidopsis thaliana secrete the signaling
peptide CLAVATA3 (CLV3) that restricts stem cell proliferation and promotes differentiation …