Previous studies have found that once seedlings break the soil, light can induce degradation of key ethylene signaling element insensitive 3 (EIN3), so as to indirectly inhibit synthesis ethylene. Ethylene is most important hormone in phosphorus absorption by plants, which induces expression acid phosphatase (APase) and starvation response genes. Therefore, it might be speculated changes intens...

Stylo (Stylosanthes spp.) is a pasture legume predominant in tropical and subtropical areas, where low phosphorus (P) availability is a major constraint for plant growth. Therefore, stylo might exhibit superior utilization of the P pool on acid soils, particularly organic P. However, little is known about mechanisms of inorganic phosphate (Pi) acquisition employed by stylo. In this study, the u...

Two clinical cases of a mild form of hypophosphatasia were reported. The patients presented with premature xfoliation of the primary incisors as their chief complaints. Phosphoethanolamine (PEA) was elevated in their urine specimens and their serum alkaline phosphatase (APase) was below normal evel. Hypophosphatasia (Rasmussen 1983) is a hereditary condition characterized by (1) decreased level...

Orthophosphate (P(i)) is an essential but limiting macronutrient for plant growth. Extensive soil P reserves exist in the form of organic P (P(o)), which is unavailable for root uptake until hydrolysed by secretory acid phosphatases (APases). The predominant purple APase (PAP) isozymes secreted by roots of P(i)-deficient (-P(i)) Arabidopsis thaliana were recently identified as AtPAP12 (At2g2719...

Cyanobacterial alkaline phosphatases (APases) play a key role in organophosphate utilization freshwater. Tracking the distribution of APases can provide insights into physiological response phytoplankton to phosphorus nutrition. Extracellular APase PhoX, one three prokaryotic families, is important for utilization. Because existing methods only give information on bulk activity, specific contri...

The induction and secretion of acid phosphatases (APases) is a universal response of plants to phosphate (Pi) starvation. AtPAP10 (Arabidopsis purple acid phosphatase 10) is a major Pi starvation-induced APase that is associated with the root surface in Arabidopsis. So far, the roles of local and systemic signalling in regulating root-associated AtPAP10 activity remain largely unknown. In this ...

Reactive oxygen species such as hydrogen peroxide have the potential to alter metabolic rates of marine prokaryotes, ultimately impacting the cycling and bioavailability of nutrients and carbon. We studied the influence of H2O2 on prokaryotic heterotrophic production (PHP) and extracellular enzymatic activities (i.e., β-glucosidase [BGase], leucine aminopeptidase [LAPase] and alkaline phosphata...

INTRODUCTION: Endochondral bone formation processes through cartilage formation and replacement of mineralizin g growth plate cartilage by bone. Growth plate chondrocytes undergo a series of differentiation events, including proliferation, hypertrophy, terminal differentiation and subsequent programmed cell death (apoptosis). Terminal differentiation of growth plat e chondrocytes is a crucial p...

Background: Overexpression of known genes encoding key phosphate (Pi)-metabolizing enzymes, such as acid phosphatases (APases), is presumed to help plants with Pi availability and absorption as they are mostly exposed to suboptimal environmental conditions for this vital element.Objectives: In this study, the overexpression effect of AtPAP26, one of the m...