The Presence of Beneficial Organisms Associated to N and P Economy in the Rhizosphere of Native Vegetation in an Oligotrophic Savanna of Guárico State, Venezuela

2017 ◽  
Vol 10 (1) ◽  
pp. 123-133
Author(s):  
Edith Mora ◽  
Marcia Toro ◽  
Danilo López-Hernández
Keyword(s):  
Soil Microorganisms ◽  
P Uptake ◽  
Ecological Niches ◽  
Phosphate Solubilizing Bacteria ◽  
Natural Conditions ◽  
Tropical Plants ◽  
Plant P Uptake ◽  
Am Symbiosis ◽  
Phosphate Solubilizing ◽  
Total Bacteria

Background:In natural conditions, tropical plants are adapted to different ecological niches that can be associated to soil microorganisms which play a key role in nutrient cycling likeArbuscular mycorrhiza(AM), phosphate solubilizing bacteria (PSB) and/or nitrogen fixing rhizobia.Methods:We report a survey of the presence in a Trachypogon savanna located at Estación Experimental La Iguana (EELI) in Central Venezuela, of some beneficial plant-microorganism associations. In this savanna, plants present a high AM symbiosis affinity. The high mycorrhization and the presence of potential PSB suggest a synergic effect in plant P-uptake.Results:After screening the rhizospheres of 25 plant species from the zone, we could isolate a high proportion of potential PSB in relation to the total bacteria number from the rhizospheres ofCentrosema venosumandGalactia jussiaeana.Conclusion:Therefore, the presence of potential PSB in the rhizosphere of those species constitutes an important finding to discover novel biofertilizers for crop plants.

scholarly journals Responses of Phosphate-Solubilizing Microorganisms Mediated Phosphorus Cycling to Drought-Flood Abrupt Alternation in Summer Maize Field Soil

2022 ◽  
Vol 12 ◽  
Author(s):  
Wuxia Bi ◽  
Baisha Weng ◽  
Denghua Yan ◽  
Hao Wang ◽  
Mengke Wang ◽  
...  
Keyword(s):  
Driving Forces ◽  
Soil Microbial Communities ◽  
Mature Stage ◽  
Phosphate Solubilizing Bacteria ◽  
Field Soil ◽  
Summer Maize ◽  
Maize Field ◽  
P Cycling ◽  
Plant P Uptake ◽  
Phosphate Solubilizing

Soil microbial communities are essential to phosphorus (P) cycling, especially in the process of insoluble phosphorus solubilization for plant P uptake. Phosphate-solubilizing microorganisms (PSM) are the dominant driving forces. The PSM mediated soil P cycling is easily affected by water condition changes due to extreme hydrological events. Previous studies basically focused on the effects of droughts, floods, or drying-rewetting on P cycling, while few focused on drought-flood abrupt alternation (DFAA), especially through microbial activities. This study explored the DFAA effects on P cycling mediated by PSM and P metabolism-related genes in summer maize field soil. Field control experiments were conducted to simulate two levels of DFAA (light drought-moderate flood, moderate drought-moderate flood) during two summer maize growing periods (seeding-jointing stage, tasseling-grain filling stage). Results showed that the relative abundance of phosphate-solubilizing bacteria (PSB) and phosphate-solubilizing fungi (PSF) increased after DFAA compared to the control system (CS), and PSF has lower resistance but higher resilience to DFAA than PSB. Significant differences can be found on the genera Pseudomonas, Arthrobacter, and Penicillium, and the P metabolism-related gene K21195 under DFAA. The DFAA also led to unstable and dispersed structure of the farmland ecosystem network related to P cycling, with persistent influences until the mature stage of summer maize. This study provides references for understanding the micro process on P cycling under DFAA in topsoil, which could further guide the DFAA regulations.

scholarly journals Coupling Phosphate-Solubilizing Bacteria with Phosphorus Supplements Improve Maize Phosphorus Acquisition and Growth under Lime Induced Salinity Stress

Plants ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 900 ◽  
Author(s):  
Muhammad Adnan ◽  
Shah Fahad ◽  
Muhammad Zamin ◽  
Shahen Shah ◽  
Ishaq Ahmad Mian ◽  
...  
Keyword(s):  
Rock Phosphate ◽  
Soil Phosphorus ◽  
Farmyard Manure ◽  
Harmful Effect ◽  
Poultry Manure ◽  
P Uptake ◽  
Crop Growth ◽  
Phosphate Solubilizing Bacteria ◽  
Organic Manures ◽  
Phosphate Solubilizing

Global warming promotes soil calcification and salinization processes. As a result, soil phosphorus (P) is becoming deficient in arid and semiarid areas throughout the world. In this pot study, we evaluated the potential of phosphate-solubilizing bacteria (PSB) for enhancing the growth and P uptake in maize under varying levels of lime (4.8%, 10%, 15% and 20%) and additional P supplements (farmyard manure, poultry manure, single super phosphate and rock phosphate) added at the rate of 45 mg P2O5 kg−1. Inoculation and application of P as organic manures (Poultry and farm yard manures) improved maize growth and P uptake compared to the control and soils with P applied from mineral sources. Liming adversely affected crop growth, but the use of PSB and organic manure significantly neutralized this harmful effect. Mineral P sources combined with PSB were as effective as the organic sources alone. Furthermore, while single supper phosphate showed better results than Rock phosphate, the latter performed comparably upon PSB inoculation. Thus, PSB plus P application as organic manures is an eco-friendly option to improve crop growth and P nutrition in a calcareous soil under changing climate.

scholarly journals Application of Empty Fruit Bunches Compost and Types of P Fertilizer on the Growth and Phosphorus Uptake in Oil Palm Seedlings

2020 ◽  
Vol 4 (2) ◽  
pp. 59
Author(s):  
Pauliz Budi Hastuti ◽  
Sri Manu Rohmiyati
Keyword(s):  
Oil Palm ◽  
Phosphorus Uptake ◽  
P Uptake ◽  
Phosphate Solubilizing Bacteria ◽  
Empty Fruit Bunches ◽  
P Fertilizer ◽  
Number Of Leaves ◽  
Phosphate Solubilizing ◽  
Growth Of Seedlings ◽  
Randomized Method

<p>This research aimed to evaluate the effect of empty fruit bunches (efb) compost, phosphate-solubilizing bacteria (PSB), lime, and types of P fertilizer on the growth and availability of Phosphorus and P uptake in the pre-nursery (PN) oil palm seedlings in latosols. The pot experiments were arranged in a Factorial Completely Randomized method. The first factor was the application of efb compost: without efb compost, efb compost, without efb compost + PSB, and without efb compost + lime. The second factor was the types of P fertilizer: SP-36, RP, guano, and NPKMg + Urea as a control. The results showed that the combination of without efb compost +lime and RP fertilizer produces the highest number of leaves. The influence of a single factor showed that the application of without efb, efb compost, without efb compost +PSB, without efb compost + lime, resulted in the same growth of seedlings, except on plant height and the length of the leaf. The various types of P fertilizer led to the same growth of seedlings except for stem diameter. The highest available P was obtained in the combination of without efb compost + PSB with SP-36 fertilizer, which was 631.1% compared to control (without efb compost and NPKMg, Urea) and the lowest in the combination of without efb compost + lime with (NPKMg, Urea). The treatment without efb compost + lime with SP-36 fertilizer increased P uptake of leaves by 55.6% and stem by 47.1% compared to control.</p>

scholarly journals Addition of high C:N crop residues to a P-limited substrate constrains the benefits of arbuscular mycorrhizal symbiosis for wheat P and N nutrition

Mycorrhiza ◽  
2021 ◽  
Author(s):  
Rosolino Ingraffia ◽  
Sergio Saia ◽  
Antonio Giovino ◽  
Gaetano Amato ◽  
Giuseppe Badagliacca ◽  
...  
Keyword(s):  
Plant Growth ◽  
Nutrient Uptake ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
P Uptake ◽  
Mycorrhizal Symbiosis ◽  
N Recovery ◽  
Positive Effects ◽  
Plant P Uptake ◽  
Am Symbiosis

AbstractMany aspects concerning the role of arbuscular mycorrhizal (AM) fungi in plant nutrient uptake from organic sources remain unclear. Here, we investigated the contribution of AM symbiosis to N and P uptake by durum wheat after the addition of a high C:N biomass to a P-limited soil. Plants were grown in pots in the presence or absence of a multispecies AM inoculum, with (Org) or without (Ctr) the addition of 15N-labelled organic matter (OM). A further treatment, in which 15N was applied in mineral form (Ctr+N) in the same amount as that supplied in the Org treatment, was also included. Inoculation with AM had positive effects on plant growth in both control treatments (Ctr and Ctr+N), mainly linked to an increase in plant P uptake. The addition of OM, increasing the P available in the soil for the plants, resulted in a marked decrease in the contribution of AM symbiosis to plant growth and nutrient uptake, although the percentage of mycorrhization was higher in the Org treatment than in the controls. In addition, mycorrhization drastically reduced the recovery of 15N from the OM added to the soil whereas it slightly increased the N recovery from the mineral fertiliser. This suggests that plants and AM fungi probably exert a differential competition for different sources of N available in the soil. On the whole, our results provide a contribution to a better understanding of the conditions under which AM fungi can play an effective role in mitigating the negative effects of nutritional stresses in plants.

scholarly journals Production of phospho-vermicompost by earthworms mediated bio-conversion of organic residues and rock phosphate

2021 ◽  
Vol 31 (3) ◽  
pp. 195-204
Author(s):  
MA Haque ◽  
MM Ali ◽  
MSH Bhuiyan
Keyword(s):  
Rice Straw ◽  
Water Hyacinth ◽  
Rock Phosphate ◽  
Available P ◽  
Phosphate Solubilizing Bacteria ◽  
Organic Residues ◽  
Chemical Fertilizers ◽  
Total N ◽  
Phosphate Solubilizing ◽  
Total Bacteria

A glass house experiment was conducted to develop phospho-vermicompost using different combination of organic residues amended with rock phosphate and earthworms at the Soil Science Division, BINA, Mymensingh. The experiment was conducted in a Completely Randomized Design with eight treatments and three replications. The treatments were as T1:50% Cowdung (CD) + 50% Mustard straw (MST), T2:50% CD + 50% Water hyacinth (WH), T3:50% CD + 50% Rice straw (RST), T4:50% CD + 25% WH + 25% RST, T5:50% CD + 50% MST + 4% Rock phosphate (RP), T6:50% CD + 50% WH + 4% RP, T7:50% CD + 50% RST + 4% RP, T8:50% CD + 25% WH + 25% RST + 4% RP. About 150 earth worms (Eisenia foetida or Red wiggler earthworms) were released on partial decomposed residues into the pots. At the end of the incubation, population of earthworms, total bacteria and phosphate solubilizing bacteria were determined from prepared vermicompost. pH, organic carbon, total N, P, K, S, available P and alkaline phosphatase activity were also determined from prepared vermicomposts. pH was found almost similar in all the treatment combinations but with rock phosphate amended treatments showed greater pH than without rock phosphate amended treatments. The treatment T8 (50% cowdung +25% water hyacinth +25% rice straw with 4% rock phosphate powder + red wiggler earthworms) showed significantly highest population of earthworms, total bacteria, phosphate solubilizing bacteria (PSB) and alkaline phosphatase activity (ALPA) and gave lower C:N and C:P ratio which might be resulted the higher amount of nutrients including available P in mature vermicompost. However, among the treatments, the treatments T8 gave the highest total N (1.42%), P (1.45%), K (1.52%) and S (0.35%) and available P contents than that of other treatments which indicated the better quality of phospho-vermicompost. Therefore, 50% cowdung +25% water hyacinth +25% rice straw with 4% rock phosphate powder and red wiggler earthworms could be used for the production of phospho-vermicompost. The developed phospho-vermicompost could be used for supplement of phosphatic fertilizer and other chemical fertilizers in the cultivation of different crops and also could be saved of chemical fertilizers. Progressive Agriculture 31 (3): 195-204, 2020

scholarly journals The effect of combination of indigenous phosphate solubilizing bacteria of Riau, Indonesia on the available phosphorus and phosphorus uptake of soybean

2018 ◽  
Vol 10 (3) ◽  
pp. 146-150
Author(s):  
LUFITANUR ALFIAH ◽  
DELITA ZUL ◽  
NELVIA NELVIA
Keyword(s):  
Phosphatase Activity ◽  
Soil Phosphorus ◽  
Peat Soil ◽  
Phosphorus Uptake ◽  
P Uptake ◽  
Available P ◽  
Available Phosphorus ◽  
Alkaline Soil ◽  
Phosphate Solubilizing Bacteria ◽  
Phosphate Solubilizing

Alfiah L, Zul D, Nelvia N. 2018. The effect of combination of indigenous phosphate solubilizing bacteria of Riau, Indonesia on the available phosphorus and phosphorus uptake of soybean. Nusantara Bioscience 10: 146-150. Despite the abundant amount of phosphorus (P) in the soil, P uptake by the plants is very limited. In acidic soil, phosphorus (P) is bound to aluminum (Al) and iron (Fe), whereas in the alkaline soil, phosphorus (P) is bound to calcium (Ca). The improvement of efficiency and availability of P to plants can be made by utilizing a group of solubilizing phosphate microorganisms. Potency test to investigate the P solubility by Phosphate Solubilizing Bacteria (PSB) has been conducted by isolating the bacteria from peat soil at Biosphere Reserves of Giam Siak Kecil Bukit Batu, Riau, Indonesia. The semi-quantitative test revealed that the PSB were able to dissolve Ca3 (PO4)2, FePo4 and phosphate rock. However, the adaptation ability and potency of PSB from indigenous Riau peat soil inoculated into soybean (Glycine max L. Merr) plants in the mineral soil have not yet been investigated. The present study was carried out from March to June 2015 on the alluvial soil in Babussalam Village, Rambah Sub-district, Rokan Hulu District, Riau. The aim of this study was to determine the effect of PSB inoculation on bacterial population and phosphatase activity. The study also aimed to determine the available P and P uptake and their impact on soybean growth and production. The study employed a factorial experiment laid out in a completely randomized design (CRD) consisted of two factors, i.e., soil treatment and PSB. The first factor comprised of two levels, i.e., T0: non-sterilized soil, T1: sterilized soil. The second factor consisted of 4 levels, i.e., B0: without PSB inoculation, B1: inoculation using 2 isolates of PSB (BB_UB6 and BB_K9), B2: inoculation using 3 isolates of PSB (BB_UB6, BB_K9 and BB_K2), and B3: inoculation using 4 isolates of PSB (BB_UB6, BB_K9, BB_K2, and BB_HS13). The results showed that inoculation of starter 3 had the highest phosphatase activity rate of 12.43 μg p NP g-1 hour-1. The highest available P was produced by starter 2, while the P uptake on non-sterilized soil was higher than that on the sterilized soil at 2.63 mg plant-1. PSB inoculation and soil sterilization did not significantly affect the population of phosphate solubilizing bacteria.

Effect of Silicon and Phosphate-Solubilizing Bacteria on Improved Phosphorus (P) Uptake Is Not Specific to Insoluble P-Fertilized Sorghum (Sorghum bicolor L.) Plants

2019 ◽  
Vol 39 (1) ◽  
pp. 239-253 ◽  
Author(s):  
Leila Rezakhani ◽  
Babak Motesharezadeh ◽  
Mohammad Mehdi Tehrani ◽  
Hassan Etesami ◽  
Hossein Mirseyed Hosseini
Keyword(s):  
Sorghum Bicolor ◽  
P Uptake ◽  
Phosphate Solubilizing Bacteria ◽  
Phosphate Solubilizing ◽  
Sorghum Bicolor L

Synergistic effect between phosphate solubilizing bacteria and vesicular-arbuscular mycorrhizal fungi on growth and p uptake in Cajanus cajana L. (Pigeon pea)

2016 ◽  
Vol 6 (01) ◽  
pp. 5211 ◽  
Author(s):  
Sharanappa Jangandi ◽  
Chaitra B. Negalur* ◽  
Mr. Narayan ◽  
H. C. Lakshman
Keyword(s):  
Synergistic Effect ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Dry Matter ◽  
Arbuscular Mycorrhizal ◽  
P Uptake ◽  
Garden Soil ◽  
Phosphate Solubilizing Bacteria ◽  
Nodule Number ◽  
Phosphate Solubilizing

The influence of phosphate solubilizing bacterium (Bacillus polymyxa) and arbuscular mycorrhizal fungi (Rhizophagus fasciculatus) on growth and phosphorus uptake in Cajanus cajana were studied, in green house conditions. Experiments were carried out by using both sterilized and unsterilized garden soil (sandy loam). Mycorrhiza with P-solubilizing bacteria inoculated with sterilized soil produced significantly higher growth, dry matter and increase in nodule number and P uptake in shoot. Moderate or lower growth response was observed among the plants grown in unsterilized soil either PSB or AMF inoculation. On the contrary non-inoculated plants in sterilized garden soil did not showed meager growth and higher total P uptake. A synergistic effect was recorded with increased plant dry matter, nodule number and P uptake in the plants treated with both the inoculum and in sterilized soil.

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