Cyanobacteria modulated changes and its impact on bioremediation of saline-alkaline soils

Singh, Vikrant; Singh, D. V.

doi:10.3329/bjb.v44i4.38646

Cited by 16 publications

(3 citation statements)

References 14 publications

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“…Cyanobacterial biomass is reported to have a store of labile pools of C, N, P and mineral nutrients like Ca, Mg, Na and K (Henriksson, 1971, Mandal et al, 1999 which are released into the soil due to death and rapid mineralisation (Yanni and Abd-El-Rahman, 1993).Our investigations are in compatibility with earlier studies done where cyanobacteria modulated changes and its impact on bioremediation of saline-alkaline soils of Varanasi, Uttar Pradesh has been investigated (Singh and Singh, 2015). The soil was inoculated with cyanobacteria Nostoc calcicola and gypsum and observed significant decrease in EC, pH and Na + and increase in organic carbon.…”

Section: Resultssupporting

confidence: 88%

Bioreclamatory Studies on Salt Affected Soil by Using Cyanobacterial Biofertilizers

Devi¹,

Rani²,

Sagar³

2021

PLANT ARCHIVES

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In the present investigation, three strains of cyanobacteria isolated from agricultural fields near to salt mine were used as biofertilizer individually and in consortia. Farm yard manure was also used along with cyanobacterial biofertilizers to see the ameliorative effect on soil physical, chemical and biological properties. The algalization experiment was conducted in pots in the glass house of the department for 240 days. There was an improvement in carbon, nitrogen, phosphate, potassium, magnesium, calcium, zinc, iron, copper and manganese with biofertilizers treatment whereas sodium ion, EC and pH were found to be decreased. Soil microbial activities and plant growth parameters were found to be improved. Thus, the cyanobacterial species show promise in effective exploitation for phytoremediation and improved productivity of saline soils.

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Section: Resultssupporting

confidence: 88%

Bioreclamatory Studies on Salt Affected Soil by Using Cyanobacterial Biofertilizers

Devi¹,

Rani²,

Sagar³

2021

PLANT ARCHIVES

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“…The cyanobacterial genera which were used in different pot and field studies include Anabaena, Nostoc, Calothrix, and Spirulina (Li et al, 2019). Soil pH and EC were decreased (Singh and Singh, 2015), while soil fertility and soil enzyme activities were improved using Nostoc ellipsosporum HH-205 and Nostoc punctiforme HH-under saline soil of India (Nisha et al, 2018). Additionally, Anabaena laxa RPAN8 showed 21-times higher acetylene reducing activity under salt stress condition, which was an indication of N-fixation (Babu et al, 2015).…”

Section: Breeding Approaches For Developing Salt-tolerant Crop Varietiesmentioning

confidence: 99%

Exploring the Physiological and Molecular Mechanisms of Halophytes' Adaptation to High Salinity Environments: Implications for Enhancing Plant Salinity Tolerance

Mohamed,

Khalil,

Zaghloul

2023

Catrina: The International Journal of Environmental Sciences

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Salinity stress poses a significant challenge to plant growth and agricultural productivity worldwide. However, certain plant species, known as halophytes, have evolved remarkable adaptive mechanisms to thrive in high salinity environments. Understanding the physiological and molecular mechanisms underlying the salt tolerance of halophytes holds great potential for enhancing salinity tolerance in non-halophytic crop plants. This review aims to explore the adaptive strategies employed by halophytes to cope with salinity stress and their implications for improving plant salinity tolerance. Physiological adaptations of halophytes include mechanisms to regulate ion homeostasis, maintain osmotic balance, and minimize water loss under high salinity conditions. These adaptations involve the accumulation of compatible solutes, such as proline and glycine betaine, as well as the compartmentalization of toxic ions in vacuoles. Halophytes also exhibit efficient antioxidant systems to counteract oxidative stress induced by salt accumulation. At the molecular level, halophytes employ a range of genetic and epigenetic mechanisms to regulate gene expression and enhance salt tolerance. These mechanisms include the activation of stress-responsive transcription factors, modulation of ion transporters and channels, and epigenetic modifications that alter chromatin structure and gene expression patterns. Recent advancements in molecular techniques, such as transcriptomics and proteomics, have provided valuable insights into the complex regulatory networks involved in halophyte salt tolerance. Harnessing the knowledge gained from halophyte adaptation mechanisms can offer promising prospects for improving the salinity tolerance of economically important crop plants. Genetic engineering and breeding approaches can be employed to introduce or enhance the expression of key salt tolerance genes in non-halophytic species. Additionally, the identification and utilization of halophytederived salt tolerance traits through conventional breeding strategies hold great potential for developing salt-tolerant crop varieties. Therefore, the investigation of halophytes' physiological and molecular mechanisms of salt tolerance provides valuable insights into the intricate strategies employed by plants to adapt and thrive in high salinity environments. The knowledge gained from these studies can be harnessed to enhance the salinity tolerance of non-halophytic crop plants, thereby contributing to sustainable agriculture in salinity-affected regions.

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“…Several researches of recent past have suggested the efficiency of cyanobacteria for remediation of salt-affected soil in laboratory studies and field trials [91][92][93][94][95]. There have been a variety of suggested mechanisms involved in reclaiming the salt-affected soils and promotion of plant growth by cyanobacteria.…”

Section: Role Of Biofertilizers In Alleviating Abiotic Stress In Planmentioning

confidence: 99%

Applications and Constraints of Plant Beneficial Microorganisms in Agriculture

Debnath¹,

Rawat²,

Mukherjee³

et al. 2020

Biostimulants in Plant Science

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At present time, chemical fertilizers are more in practice for crop production, which failed to upkeep soil and environment quality and affected the sustainability of the agricultural production system. Conversely, biofertilizers are ecosystem friendly, one of the best modern tools for agriculture, and are used to improve soil fertility and quality. Biofertilizers have now emerged as a highly potent alternative to inorganic fertilizers and offer an ecologically sound and economically attractive route for augmenting nutrient supply and increasing crop production. These include live cells of diverse genera of microorganisms and have the potential to fix atmospheric nitrogen and solubilize and mobilize plant nutrients from insoluble form through microbiological process. It has also the potential to diminish the gap between nutrient supply through fertilizers and nutrient removal by crops. Hence, biofertilizers can be a feasible option to the farmers to increase crop productivity and should find greater acceptance from the extension workers and commercial biofertilizer manufacturers. Applications and Constraints of Plant Beneficial Microorganisms in Agriculture DOI: http://dx.doi.org/10.5772/intechopen.89190 atmospheric nitrogen, which is transformed into organic nitrogenous compound. The nitrogen-fixing bacteria work under two conditions, symbiotically (Rhizobium, Frankia) and as free-living bacteria (nonsymbiotic) such as Azotobacter and Azospirillum. The N 2 -fixing bacteria associated with nonlegumes include species of Achromobacter, The most exploited symbiotic N 2 -fixing bacteria are those belonging to the family Rhizobiaceae. Rhizobium inoculants are of greatest importance because of their ability to fix atmospheric N 2 in association with certain legumes [11]. It is estimated that N 2 fixation by Rhizobium in root nodules of legumes is of the order of 14 million tons on a global scale and is almost 15% of the industrial N fixation. Yield of many legumes can be increased substantially by the use of appropriate Rhizobium cultures. For successful nodulation each legume requires a specific species of Rhizobium to form effective nodules. Many legumes may be modulated by diverse strains of rhizobia, but growth is enhanced only when nodules are produced by effective strains of rhizobia [12]. Rhizobium can be used for legumes crop and trees (e.g., lucerne) and is a crop-specific inoculant, for example, Rhizobium trifolii for berseem, Rhizobium meliloti for lucerne, Rhizobium phaseoli for green gram and black gram, Rhizobium japonicum for soya bean, Rhizobium leguminosarum for pea and lentil, Rhizobium lupini for chickpea, and Rhizobium spp. for cowpea. Rhizobium is however limited by cross-inoculation group, and only certain legumes are benefited by this symbiosis.Similar to the Rhizobium, other filamentous bacteria of genus Frankia belonging to the family Frankiaceae are found in the root nodules of nonlegumes such as trees and shrubs. These bacteria live in symbiosis with actinorhizal plants. These actinorhiza...

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Cyanobacteria modulated changes and its impact on bioremediation of saline-alkaline soils

Cited by 16 publications

References 14 publications

Bioreclamatory Studies on Salt Affected Soil by Using Cyanobacterial Biofertilizers

Bioreclamatory Studies on Salt Affected Soil by Using Cyanobacterial Biofertilizers

Exploring the Physiological and Molecular Mechanisms of Halophytes' Adaptation to High Salinity Environments: Implications for Enhancing Plant Salinity Tolerance

Applications and Constraints of Plant Beneficial Microorganisms in Agriculture

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