Selection and evaluation of phosphate-solubilizing bacteria from grapevine rhizospheres for use as biofertilizers

Ling, Min; Liu, Xu; Cheng, Bao-Sen; Ma, Xuelei; Lyu, Xiao-Tong; Zhao, Xiaoling; Ju, Young‐Tae; Zhuo, Min; Fang, Yulin

doi:10.5424/sjar/2016144-9714

Cited by 47 publications

(39 citation statements)

References 51 publications

(57 reference statements)

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“…The indigenous PSB in combination with chemical fertilizer (superphosphate and rock phosphate) reduces dose requirement by 25-50% (Sundara et al 2002). Some studies reported that inoculation of PSB can solubilize the Ca/Mg/Al/Fe-bound P which becomes available to the plant roots for growth enhancement and root proliferation (Liu et al 2016). The release of enzymes and other chemicals by PSB (organic acids, phosphorus-solubilizing enzymes, phytase, and siderophore) breaks down the bond between P and the fixing element to make it available for the plant uptake (Hayes et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Enhancement of maize plant growth with inoculation of phosphate-solubilizing bacteria and biochar amendment in soil

Rafique

Sultan

Ortaş

et al. 2017

Soil Science and Plant Nutrition

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Maize plant has an absolute requirement of nutrients (N, P, and K) for growth and development. The microbial application can facilitate in addressing limited access to chemical fertilizer concern. Moreover, biochar and phosphorus-solubilizing bacterial (PSB) community can contribute together in nutrient availability. Both have the P-supply potential to the soil, but their interaction has been tested less under semiarid climatic conditions. The purpose of the study was to evaluate the potential of biochemically tested promising PSB strains and biochar for maize plant growth and nutritional status in plant and soil. Therefore, two isolated PSB strains from maize rhizosphere were biochemically tested in vitro and identified by 16S rDNA gene analysis. The experiment was conducted in the greenhouse where the plant growth and nutrient availability to the plants were observed. In this regard, all the treatments such as PSB strain-inoculated plants, biochar-treated plants, and a combination of PSBs + biochartreated plants were destructively sampled on day 45 (D 45) and day 65 (D 65) of sowing with four replications at each time. PSB inoculation, biochar incorporation, and their combinations have positive effects on maize plant height and nutrient concentration on D 45 and D 65. In particular, plants treated with sawdust biochar + Lysinibacillus fusiformis strain 31MZR inoculation increased N (32.8%), P (72.5%), and K (42.1%) against control on D 65. Besides that, only L. fusiformis strain 31MZR inoculation enhanced N (23.1%) and P (61.5%) than control which shows the significant interaction of PSB and biochar in nutrient uptake. PSB and biochar have the potential to be used as a promising amendment in improving plant growth and nutrient absorption besides the conventional approaches.

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Section: Introductionmentioning

confidence: 99%

Enhancement of maize plant growth with inoculation of phosphate-solubilizing bacteria and biochar amendment in soil

Rafique

Sultan

Ortaş

et al. 2017

Soil Science and Plant Nutrition

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“…From previous research, a specific B. arybhattai strain isolated from grapevine rhizospheres was considered a potential biofertilizer because it showed various PGP abilities such as nitrogen fixation and the production of IAA, siderophores, 1-aminocyclopropane-1-carboxylate (ACC) deaminase, chitinase, and protease [51]. Another B. arybhattai strain SanPS1 also isolated from soil showed chlorpyrifos and malathion degradation ability [52].…”

Section: Discussionmentioning

confidence: 99%

“…deaminase, chitinase, and protease [51]. Another B. arybhattai strain SanPS1 also isolated from soil showed chlorpyrifos and malathion degradation ability [52].…”

Section: Effect Of Fungicides On Iaa Production Of Mn1mentioning

confidence: 99%

Screening of Rice Endophytic Biofertilizers with Fungicide Tolerance and Plant Growth-Promoting Characteristics

et al. 2019

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The application of pesticides is unavoidable in conventional agricultural practice. To develop effective biofertilizers, bacterial strains with both pesticide tolerance and plant growth-promoting (PGP) traits were isolated for further testing. Seedlings of rice (Oryza sativa) were planted in soil with 1, 5, or 10 times the recommended rates of the fungicides etridiazole, metalaxyl, and tricyclazole. Endophytic bacteria were isolated from roots of rice seedlings. The bacterial 16S rDNA sequences and related PGP characteristics including potential nitrogen fixation, phosphorus-solubilizing and indole acetic acid (IAA) production ability were further examined. In all, 17 different strains were obtained from rice seedling roots; five strains with both nitrogen fixation potential and IAA production ability included Rhizobium larrymoorei E2, Bacillus aryabhattai E7, Bacillus aryabhattai MN1, Pseudomonas granadensis T6, and Bacillus fortis T9. Except for T9, all strains could tolerate two or more fungicides. We inoculated rice roots with the endophytic bacteria and all conferred rice growth-promoting ability. Bacillus aryabhattai MN1 was further tested and showed high tryptophan dose-dependent IAA production ability, tolerance towards etridiazole and metalaxyl application and should be considered a potential bacterial biofertilizer.

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“…The capability of rhizobacteria to solubilize insoluble phosphates has been of interest to agricultural microbiologist as it can enhance the availability of phosphorus for the plant to improve plant growth and yield [29]. It has been reported that higher concentrations of phosphate-solubilizing bacteria are commonly found in the rhizosphere as compared to bulk soil [30].…”

Section: Discussionmentioning

confidence: 99%

Isolation and biochemical characterization of Plant Growth Promoting (PGP) bacteria colonizing the rhizosphere of Tef crop during the seedling stage

Tsegaye¹,

Gizaw²,

Tefera³

et al. 2019

J Plant Sci Phytopathol

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The use of novel PGPR as bio inoculant is an alternative sustainable agricultural practice to improve soil health, grain quality, increase crop productivity, and conserve biodiversity. The aim of this study is to isolate, and characterized PGP bacteria colonizing tef rhizosphere during the seedling stage. For this concern, 426 samples of tef (Eragrostis tef) rhizosphere soils and roots were collected from East Shewa zone, Oromia regional state. 200 morphologically different bacterial pure colonies were isolated and screened for their PGP traits and biocontrol properties. Among these 40.5% isolates were positive for phosphate solubilization. 36% were positive for IAA production, 4.5% were positive for ammonia production, 19 % were positive for (EXPS), 15.5% were positive for protease production, 12.5% were positive for HCN productions, 9.5 % were positive for cellulase production, 4% were positive for amylase production, 3.5% were positive for chitinase production. For abiotic stress tolerance test, all of the isolates were grown well at 20 o c and 30 o c and neutral pH, 27% isolates were grown well at 4 o c, 25.5% grew at 40 o c, 25.5% were grown well on pH-9 and pH-11, 23.5% were tolerated pH-5, 3.5% grew at 50 o c and 60 o c, 13.5% were grown well on 5% NaCl (w/v), 3.5% were grown well on 10 and 15% NaCl (w/v), which indicated these isolates can survive in some extreme conditions. Totally 15 bacterial species having PGP traits, biocontrol properties, and abiotic stress tolerance ability were identifi ed using the Biolog bacterial identifi cation system. Among these, the majority of the identifi ed PGPR have utilized carbohydrate, carboxylic acid, and amino acid, which are the main components of plant root exudates. The above results indicated that thus PGPR can be used as biofertilizers as well as biocontrol agents to replace agrochemicals to improve crop productivity. Hence, these species can be further formulated and used for greenhouse and fi eld applications.

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Selection and evaluation of phosphate-solubilizing bacteria from grapevine rhizospheres for use as biofertilizers

Cited by 47 publications

References 51 publications

Enhancement of maize plant growth with inoculation of phosphate-solubilizing bacteria and biochar amendment in soil

Enhancement of maize plant growth with inoculation of phosphate-solubilizing bacteria and biochar amendment in soil

Screening of Rice Endophytic Biofertilizers with Fungicide Tolerance and Plant Growth-Promoting Characteristics

Isolation and biochemical characterization of Plant Growth Promoting (PGP) bacteria colonizing the rhizosphere of Tef crop during the seedling stage

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