Native microorganisms as potent bioinoculants for plant growth promotion in shifting agriculture (Jhum) systems

Banerjee, Aishiki; Bareh, Donald; Joshi, S. R.

doi:10.4067/s0718-95162017005000010

Cited by 31 publications

(24 citation statements)

References 25 publications

(26 reference statements)

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“…They serve as vehicles for the transport into microbial cells of ferric ion which is otherwise unavailable. The production of siderophores by Trichoderma candidates for plant disease control and growth promoting offers the possibilities to replace chemical pesticides [53,54]. In this regard, fungal Trichoderma isolates were investigated by qualitative test on King's B medium supplemented with 8-hydroxyquinoline ( Figure 4a).…”

Section: Discussionmentioning

confidence: 99%

Applications of Fungal Strains with Keratin-Degrading and Plant Growth Promoting Characteristics

et al. 2019

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Protein hydrolysates (PHs) are organic non-microbial biostimulants having beneficial effects on plants. The study was designed to assess the effects on plants by the applications of PHs obtained from Trichoderma isolates grown on keratin wastes. Trichoderma isolates were characterized for indole-3-acetic acid and siderophores production, activity of lytic enzymes, phosphorous solubilization and inhibition of pathogens growth, using qualitative specific tests. Fungal isolates were cultured on a medium with keratin wastes (wool and feathers) to obtain PHs. Fungal PHs were tested in vivo for plant biostimulant action, as follows: (i) seeds germination test; (ii) activation of plant proton pump; (iii) evaluation of effect on tomato seedling growth. PHs from T. asperellum cultured on feathers medium reached the highest values for all parameters recorded (plant height and diameter, number of leaves and branches), with the exception of those for plant biomass, which were maximum for the wool medium. The metabolites released by keratin degradation under the activity of selected T. asperellum isolate improved crop health and productivity. The use of PHs can be a reasonable solution for the environmental pollution of by-products from the food chain, as well as for the replacement of chemical fertilizers with microbial formulations to stimulate plant growth.

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Section: Discussionmentioning

confidence: 99%

Applications of Fungal Strains with Keratin-Degrading and Plant Growth Promoting Characteristics

et al. 2019

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“…The improved growth, nutrient absorption, and physiology of rice in response to PGPR inoculation at each irrigation interval and in saline soil could be ascribed to the biosynthesis of phytohormones such as IAA. IAA may be related to the total biomass of the plant [52] and augmented availability of nutrients [53]. It may also influence the production of ACC deaminase, EPS, and osmolytes [54,55].…”

Section: Soil Physicochemical Propertiesmentioning

confidence: 99%

Synergistic Effect of Biochar and Plant Growth Promoting Rhizobacteria on Alleviation of Water Deficit in Rice Plants under Salt-Affected Soil

et al. 2019

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Environmental stressors negatively affect crop growth and yield. Limited information is available about the synergistic use of biochar and plant growth-promoting rhizobacteria (PGPR). A field study was conducted to evaluate the effect of biochar in combination with PGPR (Pseudomonas koreensis and Bacillus coagulans) for alleviating water deficit and saline soil in rice (Oryza sativa L.). Two growing seasons, 2017 and 2018, were examined using twelve combinations of three irrigation intervals every 6 days (I1), 8 days (I2), and 10 days (I3) and four soil treatments (control, PGPR, biochar, and combination of PGPR + biochar) in salt-affected soil. The findings exhibited that synergistic use of biochar and PGPR alleviated the negative effect of these stressors. The integrative use of biochar and PGPR caused an increment in soil moisture content and physicochemical properties. Significant increasing in chlorophyll content, relative water content, stomatal conductance, K+ and K+/Na+ contents occurred with decreasing proline content and Na+ content, which confirmed the efficacy of this approach. As a result, the highest yield and its related traits were attained when biochar and PGPR were added together under irrigation interval I1, which was on par with I2. We concluded that increased nutrients uptake (N, P, and K) were the cause of the superior rice productivity resulting from co-PGPR biochar. Synergistic use of biochar and PGPR could be an effective strategy for improving plant growth and productivity under stressors.

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“…(2009) when inoculating strains of Azospirillum and Pseudomonas in wheat; and by Banerjee et al (2017), who conducted a study in rice and indicated that the increase in shoot and root biomass resulting from the inoculation with these microorganisms has beneficial effects on crop and soil quality.…”

Section: Discussionmentioning

confidence: 99%

Plant growth promoting rhizobacteria for improved water stress tolerance in wheat genotypes.

Mutumba

Zagal

Gerding

et al. 2018

J. Soil Sci. Plant Nutr.

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A greenhouse experiment was carried out to assess the effect of the inoculation with rhizobacterial strains on the tolerance to water stress in wheat genotypes (Triticum aestivum L.) under two different water regimes. A drought resistant (Fontagro 8) and a susceptible (Fontagro 98) genotype were studied. Soil water content was kept at 100% and 45% field capacity. The treatments were inoculations with AG-70 (Bacillus sp.), AG-54 (Pseudomonas sp.), and a mixture of both (AG-70 + AG-54); a control treatment consisting of an autoclaved nutritive solution. When applied to Fontagro 8 genotype, the AG-70 + AG-54 treatment resulted in a higher increase in shoot (88%) and root dry weight (211%) compared to the control under drought conditions. The same treatment applied on the susceptible genotype (Fontagro 98) resulted in increases of 73% and 129% in shoot and root dry weight, respectively. In addition, the inoculated plants showed significant increases in root length, stomatal conductance and chlorophyll index. The AG-54 and AG-70 treatments increased NPK contents in the droughtresistant genotype, while the AG-54 and AG-70 + AG-54 treatments increased the P content in the susceptible genotype. The treatments that showed the most positive effects on the biological quality parameters of the soil (microbial activity, microbial respiration and urease enzyme activity) were AG-54 and AG-70 + AG-54. Therefore, the use of AG-70 and AG-54, applied separately or combined, increased tolerance to water stress in both wheat genotypes and constitute a biotechnological tool for the production of crops in water-deficit ecosystems.

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Native microorganisms as potent bioinoculants for plant growth promotion in shifting agriculture (Jhum) systems

Cited by 31 publications

References 25 publications

Applications of Fungal Strains with Keratin-Degrading and Plant Growth Promoting Characteristics

Applications of Fungal Strains with Keratin-Degrading and Plant Growth Promoting Characteristics

Synergistic Effect of Biochar and Plant Growth Promoting Rhizobacteria on Alleviation of Water Deficit in Rice Plants under Salt-Affected Soil

Plant growth promoting rhizobacteria for improved water stress tolerance in wheat genotypes.

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