Arbuscular mycorrhizal fungi and associated bacteria isolated from salt-affected soil enhances the tolerance of maize to salinity in coastal reclamation soil

Krishnamoorthy, Rajagopal; Kim, Kiyoon; Subramanian, Parthiban; Senthilkumar, M.; Anandham, Rangasamy; Sa, Tongmin

doi:10.1016/j.agee.2016.05.037

Cited by 96 publications

(47 citation statements)

References 26 publications

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“…RK4, and their mixtures) inoculated maize (cv. Shrunken-2) plants grown under 40 mM NaCl for 17 days was lower than that in the plants without AMF-inoculation (Krishnamoorthy et al, 2016). Similarly, Na + in shoots of AMF (R. intraradices, C. etunicatum, and S. constrictum) inoculated maize plants under 66 and 100 mM NaCl was lower than that in the plants without AMF (Estrada et al, 2013a).…”

Section: Amf Colonization and Total P Assaymentioning

confidence: 89%

“…Colonization percentage of R. intraradices, Massilia sp. RK4, and their mixtures (collected from rhizosphere of the Phragmites sp., Saemangeum reclamation land, South Korea) in maize plants was significantly dropped when subjected to 40 and 80 mM NaCl for 22 days (Krishnamoorthy et al, 2016). In Leymus chinensis seedlings, AM root colonization was only detected in AMF inoculation under salt stress (100-200 mM NaCl), whereas it was undetected in un-inoculated plants (Lin et al, 2017).…”

Section: Amf Colonization and Total P Assaymentioning

confidence: 99%

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Alleviation of Salt Stress in Upland Rice (Oryza sativa L. ssp. indica cv. Leum Pua) Using Arbuscular Mycorrhizal Fungi Inoculation

et al. 2020

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Arbuscular mycorrhizal fungi (AMF) symbionts not only promote the growth of host plant but also alleviate abiotic stresses. This study aimed to investigate the putative role of AMF in salt stress regulation of upland pigmented rice cv. Leum Pua (LP) comparing with Pokkali salt tolerant (positive check). In general, LP is a variety of glutinous rice that contains anthocyanin pigment in the black pericarp, due to which it possesses high antioxidant activities compared to non-pigmented rice. Pot experiment was conducted to evaluate the impact of inoculated AMF, Glomus etunicatum (GE), Glomus geosporum (GG), and Glomus mosseae (GM) strains, in the LP plantlets subjected to 0 (control) or 150 mM NaCl (salt stress) for 2 weeks in comparison with Pokkali (a salt tolerant rice cultivar), which was maintained as a positive check. Root colonization percentage under NaCl conditions ranged from 23 to 30%. Na + content in the flag leaf tissues was increased to 18-35 mg g −1 DW after exposure to 150 mM NaCl for 14 days in both inoculated and un-inoculated LP plants, whereas Na:K ratio was very low in cv. Pokkali. Interestingly, sucrose content in the flag leaf tissues of un-inoculated LP plants under salt stress was increased significantly by 50 folds over the control as an indicator of salt stress response, whereas it was unchanged in all AMF treatments. Fructose and free proline in GE inoculated plants under salt stress were accumulated over control by 5.75 and 13.59 folds, respectively, for osmotic adjustment of the cell, thereby maintaining the structure and functions of chlorophyll pigments, F v /F m , PSII , and stomatal function. Shoot height, flag leaf length, number of panicles, panicle length, panicle weight, and 100-grain weight in GE inoculated plants of cv. LP under salt stress were maintained similar to cv. Pokkali. Interestingly, cyanidin-3-glucoside (C3G) and peonidin-3-glucoside (P3G) in the pericarp of cv. LP were regulated by GE inoculation under salt stress conditions. In summary, AMF-inoculation in rice crop is a successful alternative approach to reduce salt toxicity, maintain the yield attributes, and regulate anthocyanins enrichment in the pericarp of grains.

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Section: Amf Colonization and Total P Assaymentioning

confidence: 89%

Section: Amf Colonization and Total P Assaymentioning

confidence: 99%

Alleviation of Salt Stress in Upland Rice (Oryza sativa L. ssp. indica cv. Leum Pua) Using Arbuscular Mycorrhizal Fungi Inoculation

et al. 2020

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“…For example, AMF ( Glomus intraradices , Glomus versiform , and Glomus etunicatum predominantly) were observed in the severely saline soils of the Tabriz plains of Iran, where soil salinity levels range from 7.3 to 92.0 dS/m (Aliasgharzadeh et al, 2001). The effects of mycorrhizal symbiosis on plant salinity tolerance have been studied in many species including Medicago sativa (Azcon and El-Atrash, 1997), Sesbania aegyptiaca , and Sesbania grandiflora (Giri and Mukerji, 2004), Z. mays (Feng et al, 2002; Krishnamoorthy et al, 2016), Capsicum annum (Kaya et al, 2009), Olea europaea (Porras-Soriano et al, 2009), Citrus tangerine (Wu et al, 2010), Gossypium arboreum (Tian et al, 2004), and Lycopersicon esculentum (Al-Karaki, 2000, 2006; Al-Karaki and Hammad, 2001; Latef and Chaoxing, 2011). In all these species, AMF improved plant salinity tolerance, leading to enhanced plant growth and yield (Azcon and El-Atrash, 1997; Giri and Mukerji, 2004; Diouf et al, 2005; Kaya et al, 2009; Porras-Soriano et al, 2009; Wu et al, 2010), nutrient acquisition (Feng et al, 2002; Giri and Mukerji, 2004; Diouf et al, 2005; Kaya et al, 2009; Porras-Soriano et al, 2009; Wu et al, 2010; Krishnamoorthy et al, 2016), chlorophyll content (Feng et al, 2002; Giri and Mukerji, 2004; Kaya et al, 2009), proline concentration (Diouf et al, 2005; Kaya et al, 2009), and promoting higher accumulation of soluble sugars in roots (Feng et al, 2002; see Table 1 ).…”

Section: Strategies To Improve Salt Tolerance In Cropsmentioning

confidence: 99%

New Insights on Plant Salt Tolerance Mechanisms and Their Potential Use for Breeding

et al. 2016

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Soil salinization is a major threat to agriculture in arid and semi-arid regions, where water scarcity and inadequate drainage of irrigated lands severely reduce crop yield. Salt accumulation inhibits plant growth and reduces the ability to uptake water and nutrients, leading to osmotic or water-deficit stress. Salt is also causing injury of the young photosynthetic leaves and acceleration of their senescence, as the Na+ cation is toxic when accumulating in cell cytosol resulting in ionic imbalance and toxicity of transpiring leaves. To cope with salt stress, plants have evolved mainly two types of tolerance mechanisms based on either limiting the entry of salt by the roots, or controlling its concentration and distribution. Understanding the overall control of Na+ accumulation and functional studies of genes involved in transport processes, will provide a new opportunity to improve the salinity tolerance of plants relevant to food security in arid regions. A better understanding of these tolerance mechanisms can be used to breed crops with improved yield performance under salinity stress. Moreover, associations of cultures with nitrogen-fixing bacteria and arbuscular mycorrhizal fungi could serve as an alternative and sustainable strategy to increase crop yields in salt-affected fields.

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“…Massilia sp. RK4, a Betaproteobacteria, greatly influenced arbuscular mycorrhizal fungi root colonization and nutrient accumulation in plants (Krishnamoorthy et al 2016). Lysobacter sp.…”

Section: Discussionmentioning

confidence: 99%

Streptomyces lydicus A01 affects soil microbial diversity, improving growth and resilience in tomato

et al. 2019

JIPB

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The actinomycete Streptomyces lydicus A01 promotes tomato seedling growth; however, the underlying mechanism is unclear. In this study, we investigated whether changes in soil microbial diversity, following Streptomyces lydicus A01 treatment, were responsible for the increased tomato seedling growth. Eukaryotic 18S ribosomal DNA (rDNA) sequencing showed that S. lydicus A01‐treated and untreated soil shared 193 operational taxonomic units (OTUs), whereas bacterial 16S rDNA sequencing identified 1,219 shared OTUs between the treated and untreated soil. Of the 42 dominant eukaryotic OTUs, eight were significantly increased and six were significantly decreased after A01 treatment. Of the 25 dominant bacterial OTUs, 12 were significantly increased and eight were significantly decreased after A01 treatment. Most of the eukaryotes and bacteria that increased in abundance exhibited growth promoting characteristics, which were mainly predicted to be associated with mineralization of nitrogen and phosphorus, phosphate solubilization, nutrient accumulation, and secretion of auxin, whereas some were related to plant protection, such as the degradation of toxic and hazardous substances. Soil composition tests showed that S. lydicus A01 treatment enhanced the utilization of nitrogen, phosphorus, and potassium in tomato seedlings. Thus, microbial fertilizers based on S. lydicus A01 may improve plant growth, without the detriment effects of chemical fertilizers.

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Arbuscular mycorrhizal fungi and associated bacteria isolated from salt-affected soil enhances the tolerance of maize to salinity in coastal reclamation soil

Cited by 96 publications

References 26 publications

Alleviation of Salt Stress in Upland Rice (Oryza sativa L. ssp. indica cv. Leum Pua) Using Arbuscular Mycorrhizal Fungi Inoculation

Alleviation of Salt Stress in Upland Rice (Oryza sativa L. ssp. indica cv. Leum Pua) Using Arbuscular Mycorrhizal Fungi Inoculation

New Insights on Plant Salt Tolerance Mechanisms and Their Potential Use for Breeding

Streptomyces lydicus A01 affects soil microbial diversity, improving growth and resilience in tomato

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