scholarly journals The Halotolerant Rhizobacterium—Pseudomonas koreensis MU2 Enhances Inorganic Silicon and Phosphorus Use Efficiency and Augments Salt Stress Tolerance in Soybean (Glycine max L.)

2020 ◽  
Vol 8 (9) ◽  
pp. 1256 ◽  
Author(s):  
Arjun Adhikari ◽  
Muhammad Aaqil Khan ◽  
Ko-Eun Lee ◽  
Sang-Mo Kang ◽  
Sanjeev Kumar Dhungana ◽  
...  
Keyword(s):  
Salt Stress ◽  
Plant Biomass ◽  
Phosphorus Uptake ◽  
Phosphorus Use Efficiency ◽  
Combined Application ◽  
Root And Shoot Length ◽  
Glycine Max L ◽  
Ion Influx ◽  
Use Efficiency ◽  
Soybean Plants

Optimizing nutrient usage in plants is vital for a sustainable yield under biotic and abiotic stresses. Since silicon and phosphorus are considered key elements for plant growth, this study assessed the efficient supplementation strategy of silicon and phosphorus in soybean plants under salt stress through inoculation using the rhizospheric strain—Pseudomonas koreensis MU2. The screening analysis of MU2 showed its high salt-tolerant potential, which solubilizes both silicate and phosphate. The isolate, MU2 produced gibberellic acid (GA1, GA3) and organic acids (malic acid, citric acid, acetic acid, and tartaric acid) in pure culture under both normal and salt-stressed conditions. The combined application of MU2, silicon, and phosphorus significantly improved silicon and phosphorus uptake, reduced Na+ ion influx by 70%, and enhanced K+ uptake by 46% in the shoots of soybean plants grown under salt-stress conditions. MU2 inoculation upregulated the salt-resistant genes GmST1, GmSALT3, and GmAKT2, which significantly reduced the endogenous hormones abscisic acid and jasmonic acid while, it enhanced the salicylic acid content of soybean. In addition, MU2 inoculation strengthened the host’s antioxidant system through the reduction of lipid peroxidation and proline while, it enhanced the reduced glutathione content. Moreover, MU2 inoculation promoted root and shoot length, plant biomass, and the chlorophyll content of soybean plants. These findings suggest that MU2 could be a potential biofertilizer catalyst for the amplification of the use efficiency of silicon and phosphorus fertilizers to mitigate salt stress.

Biochemical Composition and Phosphorus Use Efficiency in Some Mixtures

2016 ◽  
Vol 5 (07) ◽  
pp. 4694 ◽  
Author(s):  
Viliana Vasileva ◽  
Anna Ilieva
Keyword(s):  
Perennial Ryegrass ◽  
Biochemical Composition ◽  
Plant Biomass ◽  
Soluble Sugars ◽  
Subterranean Clover ◽  
Water Soluble ◽  
Birdsfoot Trefoil ◽  
Phosphorus Use Efficiency ◽  
Forage Crops ◽  
Use Efficiency

In pot trial the biochemical composition and phosphorus use efficiency of birdsfoot trefoil, sainfoin and subterranean clover grown pure and in mixtures with perennial ryegrass in the next ratios were studied in the Institute of Forage Crops, Pleven, Bulgaria: birdsfoot trefoil + perennial ryegrass (50:50%); sainfoin + perennial ryegrass (50:50%); subterranean clover + perennial ryegrass (50:50%); birdsfoot trefoil + subterranean clover + perennial ryegrass (33:33:33%); sainfoin + subterranean clover + perennial ryegrass (33:33:33%). The highest crude protein content was found in the aboveground mass of birdsfoot trefoil (19.17%) and sainfoin (19.30%). The water soluble sugars contents in mixtures was found higher compared to the pure grown legumes. Birdsfoot trefoil showed the highest phosphorus use efficiency for plant biomass accumulation and nodules formation. In mixtures the phosphorus use efficiency was found be higher as compared to the same in pure grown legumes.

scholarly journals Dual inoculation of Bradyrhizobium and Enterobacter alleviates the adverse effect of salinity on Glycine max seedling

2021 ◽  
Vol 49 (3) ◽  
pp. 12461
Author(s):  
Mona S. AGHA ◽  
Mohamed A. ABBAS ◽  
Mahmoud R. SOFY ◽  
Samia A. HAROUN ◽  
Amr M. MOWAFY
Keyword(s):  
Salt Stress ◽  
Glycine Max ◽  
Sugar Content ◽  
Stability Index ◽  
Significant Rise ◽  
Morphological Criteria ◽  
Glycine Max L ◽  
Soybean Plants ◽  
Plant Salt Tolerance ◽  
Harmful Effects

The aid of beneficial microbes, which is a well-accepted strategy, may improve plant salt tolerance. However, the mechanisms that underpin it are unclear. In this study, seedling experiments were carried out to assess the effect of Bradyrhizobium and Enterobacter on the germination, growth, nonenzymatic and enzymatic content in soybean (Glycine max L.) under salt stress. Water was sprayed on the seeds as a control, and with 75 mM, 150 mM NaCl as salt stress. The findings demonstrate that salt stress (75, 150 mM) caused a significant decrease in germination, morphological criteria, and membrane stability index (MSI) when compared to control seeds but increased lipid peroxidation (MDA), electrolyte leakage (EL), osmotic pressure, proline, citric acid, sugar content, antioxidant enzymes. Furthermore, endophytic Bradyrhizobium and Enterobacter inoculation resulted in a significant rise in all of the above metrics.; however, these treatments resulted in significant reductions in ROS, EL, and MDA in stressed plants. Finally, the findings showed that combining Bradyrhizobium and Enterobacter was the most efficient in reducing the harmful effects of salt on soybean plants by boosting antioxidant up-regulation and lowering membrane leakage and ROS.

scholarly journals The Effects of Phosphate Solubilizing Rhizobacteria on Soybean (Glycine max. L.) Plants Grown under Insoluble Phosphate Fertilization

2016 ◽  
Vol 73 (2) ◽  
pp. 351
Author(s):  
Vladimir Rotaru
Keyword(s):  
Glycine Max ◽  
Plant Growth ◽  
Burkholderia Cepacia ◽  
Early Stage ◽  
Phosphorus Uptake ◽  
Sand Culture ◽  
Combined Application ◽  
Glycine Max L ◽  
Uninoculated Control ◽  
Phosphate Solubilizing

The aim of this study was to assess the comparative efficacy of two phosphorus solubilizing rhizobacteria namely Burkholderia cepacia B36 and Enterobacter radicincitans D5/23T combined with insoluble phosphates in soybean (Glycine max. L.). Inoculated plants were grown in sand culture under controlled greenhouse conditions. All the inoculated treatments showed better plant growth and nutrient uptake when compared to uninoculated control. The inoculation with B. cepacia performed better than with E. radicincitans. Phosphorus concentrations in shoots and roots did not change significantly at the early stage of plant growth. However, the bacterial inoculation had better stimulatory effect on phosphorus uptake by soybean fertilized with insoluble phosphates, in particular in treatment with combined application of both bacteria strains.

scholarly journals Main Root Adaptations in Pepper Germplasm (Capsicum spp.) to Phosphorus Low-Input Conditions

Agronomy ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 637 ◽  
Author(s):  
Leandro Pereira-Dias ◽  
Daniel Gil-Villar ◽  
Vincente Castell-Zeising ◽  
Ana Quiñones ◽  
Ángeles Calatayud ◽  
...  
Keyword(s):  
Fine Roots ◽  
Phosphorus Uptake ◽  
Root Traits ◽  
Average Diameter ◽  
Phosphorus Efficiency ◽  
Phosphorus Use Efficiency ◽  
Low Input ◽  
Wide Range ◽  
Capsicum Spp ◽  
Use Efficiency

Agriculture will face many challenges regarding food security and sustainability. Improving phosphorus use efficiency is of paramount importance to face the needs of a growing population while decreasing the toll on the environment. Pepper (Capsicum spp.) is widely cultivated around the world; hence, any breakthrough in this field would have a major impact in agricultural systems. Herein, the response to phosphorus low-input conditions is reported for 25 pepper accessions regarding phosphorus use efficiency, biomass and root traits. Results suggest a differential response from different plant organs to phosphorus starvation. Roots presented the lowest phosphorus levels, possibly due to mobilizations towards above-ground organs. Accessions showed a wide range of variability regarding efficiency parameters, offering the possibility of selecting materials for different inputs. Accessions bol_144 and fra_DLL showed an interesting phosphorus efficiency ratio under low-input conditions, whereas mex_scm and sp_piq showed high phosphorus uptake efficiency and mex_pas and sp_bola the highest values for phosphorus use efficiency. Phosphorus low-input conditions favored root instead of aerial growth, enabling increases of root total length, proportion of root length dedicated to fine roots and root specific length while decreasing roots’ average diameter. Positive correlation was found between fine roots and phosphorus efficiency parameters, reinforcing the importance of this adaptation to biomass yield under low-input conditions. This work provides relevant first insights into pepper’s response to phosphorus low-input conditions.

scholarly journals Exogenous application of melatonin alleviates salt stress-induced decline in growth and photosynthesis in Glycine max (L.) seedlings by improving mineral uptake, antioxidant and glyoxalase system

2021 ◽  
Vol 67 (No. 4) ◽  
pp. 208-220
Author(s):  
Basmah M. Alharbi ◽  
Abeer Hamdy Elhakem ◽  
Ghalia S. H. Alnusairi ◽  
Mona H. Soliman ◽  
Khalid Rehman Hakeem ◽  
...  
Keyword(s):  
Salt Stress ◽  
Aminolevulinic Acid ◽  
Ion Homeostasis ◽  
Biomass Accumulation ◽  
Antioxidant Systems ◽  
Mineral Uptake ◽  
Pigment Synthesis ◽  
Glycine Max L ◽  
Soybean Plants ◽  
Stress Damage

Soybean plants grown under NaCl were foliar sprayed twice with melatonin (MLT). Results revealed that salt stress reduced growth, biomass accumulation, photosynthesis, mineral uptake, the content of δ-aminolevulinic acid, chlorophylls, carotenoids and PSII efficiency. However, MLT application enhanced pigment synthesis and PSII activity. MLT up-regulated the antioxidant system and glyoxalase function resulting in reduced accumulation of reactive oxygen species (ROS). Reduced ROS in MLT-treated plants protected membrane functioning by reducing lipid peroxidation, electrolyte leakage and lipoxygenase activity. Nevertheless, MLT application reduced methylglyoxal accumulation while increased the content of reduced glutathione and ascorbic acid. It could be concluded that exogenous MLT mitigated the salt stress damage in soybean plants by improving photosynthesis, antioxidant systems, controlling ion homeostasis and minimising excessive ROS accumulation.  

scholarly journals Effectiveness of the Classification for the Phosphorus Use Efficiency Traits at the Seedling Stage in Lentil

2020 ◽  
Author(s):  
Muraleedhar S Aski ◽  
Neha Rai ◽  
Venkat Praksh Reddy ◽  
Harsh Kumar Dikshit ◽  
Gyan Prakash Mishra ◽  
...  
Keyword(s):  
Phosphorus Uptake ◽  
Morphological Characteristics ◽  
Phosphorus Use Efficiency ◽  
P Efficiency ◽  
Root Characteristics ◽  
Use Efficiency ◽  
Wild Lentil ◽  
Food And Nutritional Security ◽  
The Cost

Abstract Background: Understanding the morphology of the root system in lentils is critical for the identification of root characteristics for breeding cultivars with enhanced phosphorus use efficiency (PUE) to better adapt to poor P environments. PUE and variability in root morphological characteristics at the early vegetative stage were investigated among 40 indigenous and exotic lentil genotypes in a hydroponic phenotyping system.Results: A prerequisite for developing P-efficient crop cultivars is to categorise existing germplasm. In this experiment, 40 lentil genotypes were grown for 24 days under P deficit (3 μm KH2PO4) and P adequate (250 μm KH2PO4) conditions in hydroponics. Lentil genotypes exhibited significant variability for root, biomass, and P efficiency traits. Different techniques have identified various genotypes of lentils based on the efficiency of phosphorus uptake (PUPE) and the efficiency of phosphorus utilization (PUTE). IG 568229 showed the highest PUPE, while the wild ILWL-15 lentil showed the lowest PUPE in both media. The wild lentil ILWL-95 showed maximum PUTE under P adequate medium. The IC 560135, IG 334, IG 560157 and IG 568229 genotypes were found to be highly efficient at both P levels and to be ideal for a large range of P levels without having a drastic impact on biomass output.Conclusions: The primary step for breeding more P-efficient crop plants is the classification of the germplasm. IC 560135 and IC 268238 contrasting lentil lines may be useful for mapping population development, mapping and tagging of gene(s), QTLs for PUE in lentil. These efficient P crops also ensure food and nutritional security, in addition to reducing the cost of cultivation.

Evaluation of early maturing cowpea (Vigna unguiculata) germplasm for variation in phosphorus use efficiency and biological nitrogen fixation potential with indigenous rhizobial populations

2016 ◽  
Vol 155 (1) ◽  
pp. 102-116 ◽  
Author(s):  
R. ABAIDOO ◽  
M. O. DARE ◽  
S. KILLANI ◽  
A. OPOKU
Keyword(s):  
Plant Biomass ◽  
Cropping Systems ◽  
High Capacity ◽  
Principal Component ◽  
N Fixation ◽  
Phosphorus Use Efficiency ◽  
Total N ◽  
Early Maturing ◽  
Use Efficiency ◽  
Biological Nitrogen

SUMMARYCowpea genotypes that efficiently utilize phosphorus (P) with high potential for biological nitrogen (N) fixation (BNF) are vital to sustainable cropping systems in West Africa. A total of 175 early maturing cowpea genotypes were evaluated in 2010 and 2011 for P use efficiency (PUE) and BNF with an indigenous rhizobial population at Shika in the Northern Guinea savanna of Nigeria. There were significant genotypic variations for all 11 variables measured. The P utilization index, percentage N derived from the atmosphere and total N fixed ranged between 2·10–4·67, 31·3–61·86% and 11·86–50 kg/ha, respectively. The 175 early maturing cowpea genotypes were divided into five categories using principal component analysis (PCA), whereby total N fixed was associated with N and P uptake and plant biomass yield. Complete linkage cluster analysis revealed a total of three distinctive clusters having remarkable correspondence with the PCA. Some genotypes were identified as potential candidates for further breeding programmes using high PUE genotypes with relatively high capacity for BNF and indigenous rhizobial populations.

Sign in / Sign up

Export Citation Format

Share Document