Pluripotent stem cells are localized in specialized microenvironments, called stem cell niches, where signals from surrounding cells maintain their undifferentiated status. In the Arabidopsis thaliana shoot meristem, the homeobox gene WUSCHEL (WUS) is expressed in the organizing center underneath the stem cells and integrates regulatory information from several pathways to define the boundaries...

In Arabidopsis, AUXIN RESPONSE FACTOR 3 (ARF3) belongs to the auxin response factor (ARF) family that regulates the expression of auxin-responsive genes. ARF3 is known to function in leaf polarity specification and gynoecium patterning. In this study, we discovered a previously unknown role for ARF3 in floral meristem (FM) determinacy through the isolation and characterization of a mutant of AR...

Postembryonic development of higher plants is characterized by the continuous formation of organs from the shoot apical meristem (SAM) (Steeves and Sussex, 1989). The SAM serves two main functions: in the central zone, a population of undifferentiated, pluripotent stem cells is maintained, and in the peripheral zone, lateral organ primordia are initiated. While all cells of the meristem dome re...

This paper describes a decision tree (DT) based pedometer algorithm and its implementation on Android. The DTbased pedometer can classify 3 gait patterns, including walking on level ground (WLG), up stairs (WUS) and down stairs (WDS). It can discard irrelevant motion and count user’s steps accurately. The overall classification accuracy is 89.4%. Accelerometer, gyroscope and magnetic field sens...

Purpose This paper aims to understand stakeholders' sentiments with respect company policies in the water utilities (WU) sector and explore if how these could be a source for organisational learning. Design/methodology/approach study investigates use of social media WUs’ stakeholders’ reactions as data relies on mixed-methods approach based sentiment analysis Facebook (FB) pages semi-structured...

PURPOSE This study investigated the influence of long-term wearing of unstable shoes (WUS) on compensatory postural adjustments (CPA) to an external perturbation. METHODS Participants were divided into two groups: one wore unstable shoes while the other wore conventional shoes for 8 weeks. The ground reaction force signal was used to calculate the anterior-posterior (AP) displacement of the c...

UNLABELLED Saliva is one of the components for the digestive homeostasis. Recent studies have shown that patients with laryngopharyngeal reflux (LPR) present a drop in salivary pH. Patients with Sjögren's syndrome (SS) are a potential clinical research model for xerostomia and its laryngeal and pharyngeal consequences. The aim was to evaluate the characteristics of saliva of patients with SS an...

Plant stem cell populations, unlike their animal counterparts, do not use cell migration and oriented cell divisions to maintain their size, and therefore require a precise coordination between self-renewing divisions of stem cells, and rates of cell division and differentiation among stem cell progenitors. Shoot apical meristems (SAMs) of higher plants harbor a set of stem cells within the cen...

Cell numbers in above-ground meristem types of plants are thought to be maintained by a feedback loop driven by perception of the glycopeptide ligand CLAVATA3 (CLV3) by the CLAVATA1 (CLV1) receptor kinase and the CLV2/CORYNE (CRN) receptor-like complex [1]. CLV3 made in the stem cells at the meristem apex limits the expression level of the stem cellpromoting homeodomain protein WUSCHEL (WUS) in...

The shoot apical meristem (SAM), a small group of undifferentiated dividing cells, is responsible for the continuous growth of plants. Several genes have been identified that control the development and maintenance of the SAM. Among these, WUSCHEL (WUS) from Arabidopsis (Arabidopsis thaliana) is thought to be required for maintenance of a stem cell pool in the SAM. The MADS-box gene AGAMOUS, in...