Genotypic variation among chickpea and wild Cicer spp. in nutrient uptake with increasing concentration of solution Al at low pH

2020 ◽  
Vol 157 ◽  
pp. 390-401
Author(s):  
Shahana Sultana ◽  
Richard W. Bell ◽  
Wendy H. Vance
Keyword(s):  
Nutrient Uptake ◽  
Genotypic Variation ◽  
Low Ph

scholarly journals Genotypic Variation in Nutrient Uptake Requirements of Rice Using the QUEFTS Model

Agronomy ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 26
Author(s):  
Tao Sun ◽  
Xin Yang ◽  
Sheng Tang ◽  
Kefeng Han ◽  
Ping He ◽  
...  
Keyword(s):  
Nutrient Uptake ◽  
Field Experiments ◽  
Hybrid Rice ◽  
Genotypic Variation ◽  
Tropical Soils ◽  
Study Data ◽  
Japonica Rice ◽  
Rice Varieties ◽  
Indica Hybrid Rice ◽  
Validation Experiments

Nutrient requirements for single-season rice using the quantitative evaluation of the fertility of tropical soils (QUEFTS) model in China have been estimated in a previous study, which involved all the rice varieties; however, it is unclear whether a similar result can be obtained for different rice varieties. In this study, data were collected from field experiments conducted from 2016 to 2019 in Zhejiang Province, China. The dataset was separated into two parts: japonica/indica hybrid rice and japonica rice. To produce 1000 kg of grain, 13.5 kg N, 3.6 kg P, and 20.4 kg K were required in the above-ground plant dry matter for japonica/indica hybrid rice, and the corresponding internal efficiencies (IEs) were 74.0 kg grain per kg N, 279.1 kg grain per kg P, and 49.1 kg grain per kg K. For japonica rice, 17.6 kg N, 4.1 kg P, and 23.0 kg K were required to produce 1000 kg of grain, and the corresponding IEs were 56.8 kg grain per kg N, 244.6 kg grain per kg P, and 43.5 kg grain per kg K. Field validation experiments indicated that the QUEFTS model could be used to estimate nutrient uptake of different rice varieties. We suggest that variety should be taken into consideration when estimating nutrient uptake for rice using the QUEFTS model, which would improve this model.

scholarly journals Genotypic Variation on Root Growth and Nutrient Uptake in Corn and Soybean

age ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 1-12 ◽  
Author(s):  
A. T. Rosa ◽  
D. A. Ruiz Diaz ◽  
F. D. Hansel ◽  
J. S. V. Sebastian ◽  
E. A. Adee
Keyword(s):  
Root Growth ◽  
Nutrient Uptake ◽  
Genotypic Variation

scholarly journals Seed Treatment with 2,4-Diacetylphloroglucinol-Producing Pseudomonads Improves Crop Health in Low-pH Soils by Altering Patterns of Nutrient Uptake

2009 ◽  
Vol 99 (5) ◽  
pp. 506-511 ◽  
Author(s):  
Rosa E. Raudales ◽  
Erica Stone ◽  
Brian B. McSpadden Gardener
Keyword(s):  
Abiotic Stress ◽  
Nutrient Uptake ◽  
Seed Treatment ◽  
Acid Soil ◽  
Low Ph ◽  
Mineral Nutrient ◽  
Antifungal Metabolites ◽  
Growing Seasons ◽  
Stress Amelioration

Seed treatment with a 2,4-diacetylphloroglucinol (DAPG)-producing Pseudomonas strain ameliorated abiotic stress disorder in corn caused by growth in a low-pH soil. In two consecutive growing seasons, Wood1R-treated seed gave rise to plants that grew taller (P ≤ 0.05), had fewer foliar lesions (P ≤ 0.10), and provided greater yields (P ≤ 0.1) than the negative controls when grown in soil with a pH < 5.0. Under controlled conditions, seed treatment with Wood1R also reduced foliar lesion severity (P ≤ 0.05 in two of three experiments) but failed to increase shoot or root growth in young seedlings grown in acidic soil. Significant (P ≤ 0.05) patterns of altered mineral nutrient uptake (i.e., generally increasing P and Mg while reducing Al) were observed to occur as a result of Wood1R seed treatment under both sets of growing conditions. In contrast, suppression of seedling damping-off disease was not indicated in this low-pH soil, because no difference in crop stand was observed for any experiment. Additionally, Wood1R-mediated growth inhibition of seedling pathogens was reduced in vitro at pH < 5.0, indicating that secretion of antifungal metabolites may not occur in low-pH soils. This is the first report of an abiotic stress amelioration of acid soil stress-related symptoms by a DAPG-producing pseudomonad.

scholarly journals Effects of low pH and AI on growth and nutrient uptake of several plants

1995 ◽  
Vol 41 (1) ◽  
pp. 161-165 ◽  
Author(s):  
Dugganna Ralalage Ramya Malkanthi ◽  
Kazuhira Yokoyama ◽  
Tetsushi Yoshida ◽  
Masumi Moritsugu ◽  
Kunihiko Matsushita
Keyword(s):  
Nutrient Uptake ◽  
Low Ph

scholarly journals High Nutrient Concentrations of Hydroponic Solution Can Improve Growth and Nutrient Uptake of Spinach (Spinacia oleracea L.) Grown in Acidic Nutrient Solution

HortScience ◽  
2021 ◽  
pp. 1-8
Author(s):  
Daniel P. Gillespie ◽  
Gio Papio ◽  
Chieri Kubota
Keyword(s):  
Nutrient Uptake ◽  
Nutrient Solution ◽  
Plant Tissue ◽  
Nutrient Management ◽  
Spinacia Oleracea ◽  
Low Ph ◽  
Nutrient Concentrations ◽  
Waterborne Diseases ◽  
Solution Ph ◽  
High Nutrient

Hydroponic leafy green production offers high productivity and quality of crops but requires good management of pH and electrical conductivity (EC) to optimize the nutrient uptake. Nutrient solution pH is typically managed between 5.5 and 6.5, whereas lowering pH to more acidic range (e.g., <5.0) can potentially mitigate problematic waterborne diseases. Plant response to low pH is species specific and generally involves direct effect of increased hydronium ions and indirect effects of pH-dependent factors, such as low cations availability. To develop a new hydroponic nutrient management strategy, ‘Corvair’ spinach plants were grown under pH 4.0, 4.5, 5.0, and 5.5 of a hydroponic nutrient solution using a deep-water culture system in a growth chamber. Spinach shoot and root mass after 19 to 20 days declined with lowering pH. At the lowest pH of 4.0, plants displayed stunted overall growth and severely inhibited root development. Plant growth and morphology at pH 4.5 or 5.0 were normal but small, suggesting that growth reduction at these pH was likely a result of reduced nutrient uptake. Plant tissue analyses showed decreased N, P, K, Mg, S, Cu, Fe, Mn, and Zn concentration as pH decreased. When the strength of nutrient solution was increased three times at a low pH 4.5 to improve the overall nutrient availability, spinach shoot and root fresh weight with high nutrient concentrations (EC 3.4 dS·m−1) significantly improved but was still lower than those in the control (pH 5.5 and EC 1.4 dS·m−1), respectively. Plant tissue analysis showed that lowering pH to 4.5 significantly reduced tissue concentrations of P, K, Ca, Mg, S, Cu, Mn, and Zn compared with those in the control. Under low pH and increased EC treatment (pH 4.5 and EC 3.4 dS·m−1), all dry leaf nutrient concentrations were similar or higher than those of the control, except Mg and Zn, which showed a lower concentration than the control with a weak significance (P < 0.06). This suggests that additional optimization of nutrient formula might further improve the spinach growth at low pH. Together, our results will help to develop a new and low-cost nutrient management methodology to produce leafy greens hydroponically.

Relationship between golgi apparatus and axonal reticulum in sympathetic ganglion cells

1978 ◽  
Vol 36 (2) ◽  
pp. 598-599
Author(s):  
J. Quatacker ◽  
W. De Potter
Keyword(s):  
Golgi Apparatus ◽  
Sympathetic Ganglion ◽  
Phosphotungstic Acid ◽  
Ganglion Cells ◽  
Low Ph ◽  
Dense Core ◽  
Dense Core Vesicles ◽  
Large Dense Core Vesicles ◽  
Cervical Ganglia ◽  
Axoplasmic Reticulum

Mucopolysaccharides have been demonstrated biochemically in catecholamine-containing subcellular particles in different rat, cat and ox tissues. As catecholamine-containing granules seem to arise from the Golgi apparatus and some also from the axoplasmic reticulum we examined wether carbohydrate macromolecules could be detected in the small and large dense core vesicles and in structures related to them. To this purpose superior cervical ganglia and irises from rabbit and cat and coeliac ganglia and their axons from dog were subjected to the chromaffin reaction to show the distribution of catecholamine-containing granules. Some material was also embedded in glycolmethacrylate (GMA) and stained with phosphotungstic acid (PTA) at low pH for the detection of carbohydrate macromolecules.The chromaffin reaction in the perikarya reveals mainly large dense core vesicles, but in the axon hillock, the axons and the terminals, the small dense core vesicles are more prominent. In the axons the small granules are sometimes seen inside a reticular network (fig. 1).

Effect of Some Natural Mineral Waters in Nutrient Uptake by Caco-2 Cells

2010 ◽  
Vol 80 (2) ◽  
pp. 131-143 ◽  
Author(s):  
Pedro Gonçalves ◽  
João R. Araújo ◽  
Fátima Martel
Keyword(s):  
Nutrient Uptake ◽  
Mineral Waters ◽  
Distilled Water ◽  
Natural Mineral ◽  
Minute Exposure

We studied the effect of some mineral waters and some of their constituents on the apical uptake of 14C-butyrate (14C-BT) and 3H-O-methyl-D-glucose (3H-OMG) by Caco-2 cells. Uptake of 14C-BT increased after a 20-minute exposure to 1 % (v/v) distilled water, and, compared to distilled water, it was decreased by Pedras Salgadas® 1 % (v/v) and Melgaço® 5 % (v/v), and increased by Vidago® 5 % (v/v). Moreover, it increased after a 48-hour exposure to Vidago® or Melgaço® waters (5 % (v/v)). Also, uptake of 14C-BT was reduced after a 20-minute exposure to MgCl2, MgSO4, or CaCl2. Uptake of 3H-OMG was reduced after a 20-minute exposure to Melgaço® water [1 % (v/v)], when compared to distilled water. Also, a 48-hour exposure to Pedras Salgadas® or Melgaço® water (5 % (v/v)) increased and decreased uptake, respectively. Finally, uptake of 3H-OMG decreased after a 20-minute exposure to MgSO4 or NaF. In conclusion, uptake of 14C-BT and 3H-OMG by Caco-2 cells is differently modulated by distinct mineral waters.

Mechanism of Human Plasminogen Activation by Streptokinase and Human Plasmin

1964 ◽  
Vol 11 (01) ◽  
pp. 085-093
Author(s):  
W. F Blatt ◽  
JL Gray ◽  
H Jensen
Keyword(s):  
Proteolytic Activity ◽  
Low Ph ◽  
Plasminogen Activation ◽  
Sensitive Tool ◽  
Human Plasminogen

SummaryA sensitive tool has been described for measuring fibrinolysis in reconstituted systems using thrombelastography. Activator mixtures with no appreciable proteolytic activity can similarly be tested in this system when the fibrinogen utilized has sufficient plasminogen present. Exposure of human plasminstreptokinase mixtures formed at pH 7.0 to acid conditions produced a striking loss of activator activity which could not be ascribed to low pH lability of the components, nor to plasmin action on the SK at pH 2.0. This is additional evidence for the hypothesis that human plasmin interacts with SK to form a complex capable of converting human and bovine plasminogen to plasmin.

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