Multi-strain Inoculation with PGPR Producing ACC Deaminase is More Effective Than Single-strain Inoculation to Improve Wheat (Triticum aestivum) Growth and Yield

Zafar-ul-Hye, Muhammad; Zahra, Misbah Batool; Danish, Subhan; Abbas, Mazhar; Rehim, Abdur; Akbar, Muhammad; Iftikhar, Ayesha; Gul, Mehreen; Nazir, Ifat; Abid, Maria; Tahzeeb-ul-Hassan, Muhammad; Murtaza, Maria

doi:10.32604/phyton.2020.08918

Cited by 25 publications

(17 citation statements)

References 25 publications

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“…In addition to compost and biochar, augmentation of plant growth-promoting rhizobacteria (PGPR) also produce a wide variety of molecules, which improves plant growth and productivity [20][21][22][23][24][25][26][27][28] . These PGPRs increased the production of phytohormones or other molecules that protect plants from biotic and abiotic stress, increases mineral nutrition, modulating ethylene levels in plants and production of volatile organic compounds 20,29 .…”

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Potential role of compost mixed biochar with rhizobacteria in mitigating lead toxicity in spinach

Zafar-ul-Hye

Tahzeeb-ul-Hassan

Abid

et al. 2020

Sci Rep

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Consumption of heavy metals, especially lead (Pb) contaminated food is a serious threat to human health. Higher Pb uptake by the plant affects the quality, growth and yield of crops. However, inoculation of plant growth-promoting rhizobacteria (PGPR) along with a mixture of organic amendments and biochar could be an effective way to overcome the problem of Pb toxicity. That’s why current pot experiment was conducted to investigate the effect of compost mixed biochar (CB) and ACC deaminase producing PGPR on growth and yield of spinach plants under artificially induced Pb toxicity. Six different treatments i.e., control, Alcaligenes faecalis (PGPR1), Bacillus amyloliquefaciens (PGPR2), compost + biochar (CB), PGPR1 + CB and PGPR2 + CB were applied under 250 mg Pb kg-1 soil. Results showed that inoculation of PGPRs (Alcaligenes faecalis and Bacillus amyloliquefaciens) alone and along with CB significantly enhanced root fresh (47%) and dry weight (31%), potassium concentration (11%) in the spinach plant. Whereas, CB + Bacillus amyloliquefaciens significantly decreased (43%) the concentration of Pb in the spinach root over control. In conclusion, CB + Bacillus amyloliquefaciens has the potential to mitigate the Pb induced toxicity in the spinach. The obtained result can be further used in the planning and execution of rhizobacteria and compost mixed biochar-based soil amendment.

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confidence: 99%

Potential role of compost mixed biochar with rhizobacteria in mitigating lead toxicity in spinach

Zafar-ul-Hye

Tahzeeb-ul-Hassan

Abid

et al. 2020

Sci Rep

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“…The reason behind improved chlorophyll contents might be the functioning of ACC-deaminase activity, which lowered ethylene production by its conversion into ammonia and α-ketobutyrate under drought stress [57]. The better uptake of nutrients, especially N, P and K, by rhizobacteria significantly improved chlorophyll contents under drought stress [30,54,58,59]. Caffeic acid and its derivatives convert into ferulic acid and aid in the absorption of high energy radiation in mesophyll cells under drought conditions and, in turn, chlorophyll contents might be improved.…”

Section: Discussionmentioning

confidence: 99%

Rhizobacteria Inoculation and Caffeic Acid Alleviated Drought Stress in Lentil Plants

et al. 2021

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Lentil (Lens culinaris Medik) is an important component of the human diet due to its high mineral and protein contents. Abiotic stresses, i.e., drought, decreases plant growth and yield. Drought causes the synthesis of reactive oxygen species, which decrease a plant’s starch contents and growth. However, ACC-deaminase (1-aminocyclopropane-1-carboxylate deaminase) producing rhizobacteria can alleviate drought stress by decreasing ethylene levels. On the other hand, caffeic acid (CA) can also positively affect cell expansion and turgor pressure maintenance under drought stress. Therefore, the current study was planned with an aim to assess the effect of CA (0, 20, 50 and 100 ppm) and ACC-deaminase rhizobacteria (Lysinibacillus fusiform, Bacillus amyloliquefaciens) on lentils under drought stress. The combined application of CA and ACC-deaminase containing rhizobacteria significantly improved plant height (55%), number of pods per plant (51%), 1000-grain weight (45%), nitrogen concentration (56%), phosphorus concentration (19%), potassium concentration (21%), chlorophyll (54%), relative water contents RWC (60%) and protein contents (55%). A significant decrease in electrolyte leakage (30%), proline contents (44%), and hydrogen peroxide contents (54%), along with an improvement in cell membrane stability (34% over control) validated the combined use of CA and rhizobacteria. In conclusion, co-application of CA (20 ppm) and ACC-deaminase producing rhizobacteria can significantly improve plant growth and yield for farmers under drought stress. More investigations are suggested at the field level to select the best rhizobacteria and CA level for lentils under drought.

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“…Dual inoculations of beneficial soil microorganisms, including rhizobacteria and AMF have been observed to enhance nutrients' uptake and production of different crops to a greater extent than single inoculation even under stress environment [22][23][24][25][26][27][28][29]. Research shows that the interaction of AMF with certain plant growth-promoting rhizobacteria enhances the activity of AMF in the rhizosphere, resulting in increases in P, Zn, and Cu uptake by maize plants [17,30].…”

Section: Introductionmentioning

confidence: 99%

Sustainable Management with Mycorrhizae and Phosphate Solubilizing Bacteria for Enhanced Phosphorus Uptake in Calcareous Soils

et al. 2020

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Low availability of phosphorus (P) in calcareous soils is a major problem for sustainable improvement in cereals crops yield. A higher amount of calcium in soils precipitates the P, thus making it immobile in soil. Inoculation of arbuscular mycorrhizal fungi (AMF) and phosphate solubilizing bacteria (PSB) could be helpful in the sustainable management of immobile P in soil. However, their combined use in releasing P from rock phosphate (RP) in alkaline calcareous soils have been little investigated. In this regard, two successive field experiments were conducted to assess the interactive inoculation potential of AMF and PSB strain Bacillus sp. PIS7 with RP on the yield and P uptake of maize (Zea mays L.) and wheat (Triticum aestivum L.) crops in alkaline calcareous soil. The first field experiment was conducted in a complete randomized block design with 10 treatments and three replications by inoculating maize seeds with AMF and Bacillus sp. PIS7 inoculum alone and in combination with RP. Their performance was compared with single super phosphate (SSP) inorganic fertilizer. Afterward, the residual effects of inoculated AMF and Bacillus sp. PIS7 were investigated on wheat as a subsequent crop. Maize and wheat yield parameters, P uptake, AMF root colonization, and PSB population was measured. The results of both trials indicated the beneficial effects of AMF and Bacillus sp. PIS7 with RP in increasing the plants grain yield and P uptake until the second season after inoculation, as compared to controls. Likewise, maize and wheat roots colonization, PSB population density, and post-harvest soil properties were also improved by the combined inoculation of AMF and Bacillus sp. PIS7 with RP. It is concluded that PSB solubilizes the unavailable forms of P in combination with RP fertilizers in soil, and AMF ultimately transfers it to plants for growth promotion. Moreover, the combined inoculation of AMF and PSB with ground RP had more potential to improve maize-wheat yields and P uptake comparable to those obtained by using expensive phosphatic fertilizers in P deficient calcareous pH soils.

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Multi-strain Inoculation with PGPR Producing ACC Deaminase is More Effective Than Single-strain Inoculation to Improve Wheat (Triticum aestivum) Growth and Yield

Cited by 25 publications

References 25 publications

Potential role of compost mixed biochar with rhizobacteria in mitigating lead toxicity in spinach

Potential role of compost mixed biochar with rhizobacteria in mitigating lead toxicity in spinach

Rhizobacteria Inoculation and Caffeic Acid Alleviated Drought Stress in Lentil Plants

Sustainable Management with Mycorrhizae and Phosphate Solubilizing Bacteria for Enhanced Phosphorus Uptake in Calcareous Soils

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