Plant phosphorus acquisition in a common mycorrhizal network: regulation of phosphate transporter genes of the Pht1 family in sorghum and flax. | LitMetric
Department of Environmental Sciences, Botany, Zurich-Basel Plant Science Center, University of Basel, Hebelstrasse 1, CH-4056, Basel, Switzerland.
Published: March 2015
AI Article Synopsis
Article Abstract
In a preceding microcosm study, we found huge differences in phosphorus (P) acquisition in sorghum (Sorghum bicolor) and flax (Linum usitatissimum) sharing a common mycorrhizal network (CMN). Is the transcriptional regulation of arbuscular mycorrhizal (AM)-induced inorganic orthophosphate (Pi) transporters responsible for these differences? We characterized and analyzed the expression of Pi transporters of the Pht1 family in both plant species, and identified two new AM-inducible Pi transporters in flax. Mycorrhizal Pi acquisition was strongly affected by the combination of plant and AM fungal species. A corresponding change in the expression of two AM-inducible Pht1 transporters was noticed in both plants (SbPT9, SbPT10, LuPT5 and LuPT8), but the effect was very weak. Overall, the expression level of these genes did not explain why flax took up more Pi from the CMN than did sorghum. The post-transcriptional regulation of the transporters and their biochemical properties may be more important for their function than the fine-tuning of their gene expression.
Agastache rugosa, a perennial herb native to temperate and subtropical regions, shows remarkable adaptive strategies when exposed to varying light and nutrient conditions in tropical environments. Our study reveals new insights into the crosstalk mechanisms involving carbohydrate homeostasis, biomass allocation, and nutrient acquisition in A. rugosa under different environmental conditions.
Division of Food, Nutrition and Dietetics, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Leicestershire, UK.
With advancing age, achievement of dietary adequacy for all nutrients is increasingly difficult and this is particularly so for minerals. Various factors impede mineral acquisition and absorption including reduced appetite, depressed gastric acid production and dysregulation across a range of signalling pathways in the intestinal mucosa. Minerals are required in sufficient levels since they are critical for the proper functioning of metabolic processes in cells and tissues, including energy metabolism, DNA and protein synthesis, immune function, mobility, and skeletal integrity.
Macroalgae growth depends on biologically available nitrogen, such as ammonium and nitrate, making nitrogen the most common growth-limiting factor for macroalgae. However, the role of surface microorganisms in promoting nitrogen transformation and improving nitrogen utilization by macroalgae remains unclear. In this study, 228 bacterial strains were isolated from the surface of , and high-throughput sequencing revealed significant shifts in the composition of surface bacterial communities under different nitrogen concentrations.
Soil microbial communities are pivotal to plant health and nutrient acquisition. It is becoming increasingly clear that many interactions, both among and between microbes and plants, are governed by small bioactive molecules or "secondary metabolites" that can aid in communication, competition, and nutrient uptake. Yet, secondary metabolite biogeography - who makes what, where, and why-is in its infancy.
A marine red algae species is facing growth challenges due to phosphorus (P) deficiency, which impacts its cultivation and economic importance.
*To cope with P deficiency, the algae have developed mechanisms to use dissolved organic phosphorus (DOP) sources like glucose-6-phosphate (G6P), although the exact process for G6P usage was previously unclear.
*This study found that while P deficiency negatively affects growth and physiological health, G6P treatment helps mitigate these effects by enhancing gene expression related to nutrient acquisition, although it reduces pathways related to photosynthesis and antioxidant defense less severely.
