Growth promotion and protection against root rot of sugar beet (Beta vulgaris L.) by two rock phosphate and potassium solubilizing Streptomyces spp. under greenhouse conditions

Aallam, Yassine; Dhiba, Driss; Rasafi, Taoufik El; Lemriss, Sanaâ; Haddioui, Abdelmajid; Tarkka, Mika

doi:10.1007/s11104-021-05252-w

Cited by 7 publications

(3 citation statements)

References 67 publications

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“…Additionally, these applications exhibited heightened resistance against Fusarium root rot. These findings align with prior research [ 60 ], which supports the hypothesis that the plant-associated Streptomycetes give a variety of plant benefits and enhanced root weight, shoot, and root length of sugar beet compared to the non-inoculated treatments. Additionally, the enhancement observed in sugar beet growth attributes corroborates with findings reported in several earlier studies [ 61 , 62 ].…”

Section: Discussionsupporting

confidence: 91%

Combatting Sugar Beet Root Rot: Streptomyces Strains’ Efficacy against Fusarium oxysporum

Abdelghany,

Yassin,

Abu-Ellail

et al. 2024

Plants

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Sugar beet root rot disease triggered by Fusarium oxysporum f. sp. radicis-betae is a destructive disease and dramatically affects the production and quality of the sugar beet industry. Employing beneficial microorganisms as a biocontrol strategy represents an eco-friendly and sustainable approach to combat various plant diseases. The distinct aspect of this study was to assess the antifungal and plant growth-promoting capabilities of recently isolated Streptomyces to treat sugar beet plants against infection with the phytopathogen F. oxysporum. Thirty-seven actinobacterial isolates were recovered from the rhizosphere of healthy sugar beet plants and screened for their potential to antagonize F. oxysporum in vitro. Two isolates SB3-15 and SB2-23 that displayed higher antagonistic effects were morphologically and molecularly identified as Streptomyces spp. Seed treatment with the fermentation broth of the selected Streptomyces strains SB3-15 and SB2-23 significantly reduced disease severity compared to the infected control in a greenhouse experiment. Streptomyces SB2-23 exhibited the highest protective activity with high efficacy ranging from 91.06 to 94.77% compared to chemical fungicide (86.44 to 92.36%). Furthermore, strain SB2-23 significantly increased plant weight, root weight, root length, and diameter. Likewise, it improves sucrose percentage and juice purity. As a consequence, the strain SB2-23’s intriguing biocontrol capability and sugar beet root growth stimulation present promising prospects for its utilization in both plant protection and enhancement strategies.

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Section: Discussionsupporting

confidence: 91%

Combatting Sugar Beet Root Rot: Streptomyces Strains’ Efficacy against Fusarium oxysporum

Abdelghany,

Yassin,

Abu-Ellail

et al. 2024

Plants

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“…In modern agriculture, scientists are exploring the potential ability of microorganisms to colonize the soil, improve plant growth and development, and increase agricultural yield while respecting the environment [16,17]. In this regard, several studies have explored the beneficial effect of microorganisms for the solubilization of P to overcome the bioavailability constraints of this element for plants [11,[18][19][20][21][22][23][24][25][26][27]]. Actinomycetes are an example of these microorganisms [18,20,22,24,[28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

“…In this regard, several studies have explored the beneficial effect of microorganisms for the solubilization of P to overcome the bioavailability constraints of this element for plants [11,[18][19][20][21][22][23][24][25][26][27]]. Actinomycetes are an example of these microorganisms [18,20,22,24,[28][29][30][31][32][33][34]. They are the most ubiquitous group of bacteria in nature [35].…”

Section: Introductionmentioning

confidence: 99%

Streptomycetaceae and Promicromonosporaceae: Two Actinomycetes Families from Moroccan Oat Soils Enhancing Solubilization of Natural Phosphate

et al. 2022

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Soil actinomycetes explorations appear to be an efficient alternative as biofertilizers to optimize the use of phosphorus (P) resources and enhance plant growth. This research aimed to explore the distribution of actinomycetes isolated from four different rhizospheric Moroccan oat soils and to investigate their potential for P solubilization. The distribution of actinomycetes was significantly more abundant in Settat (9.68%), Tangier (7.38%), and Beni Mellal (6.87%) than in the Merchouch-Rabat (4.90%) region. A total of 235 actinomycete strains were isolated from all sites and tested for their ability to grow on a synthetic minimum medium (SMM) containing insoluble natural rock phosphate (RP) or synthetic tricalcium phosphate (TCP) as the unique P source. One hundred forty-three isolates (60.8%) had the ability to grow in the SMM with RP whereas only twenty-five isolates (17%) had the most active growth using the SMM with TCP. Eight isolates with the most active growth in solid SMM were selected for their P solubilization abilities in liquid SMM cultures. The highest amount of P solubilized was 163.8 µg/mL for RP and 110.27 µg/mL for TCP after 5 days of culture. The biosolubilization process of AM2, the most efficient RP and TCP solubilizing strain, probably implied the highest excretion of siderophore substances. Eight of these strains were shown to belong to the Streptomyces genus and one to the Promicromonospora genus. These findings bolster the phosphate biosolubilization abilities of actinomycetes and may participate in increasing agricultural yields in an eco-efficient and environmentally friendly manner.

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Fungal Root Rots of Sugar Beets: A Review of Common Causal Agents and Management Strategies

et al. 2023

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Growth promotion and protection against root rot of sugar beet (Beta vulgaris L.) by two rock phosphate and potassium solubilizing Streptomyces spp. under greenhouse conditions

Cited by 7 publications

References 67 publications

Combatting Sugar Beet Root Rot: Streptomyces Strains’ Efficacy against Fusarium oxysporum

Combatting Sugar Beet Root Rot: Streptomyces Strains’ Efficacy against Fusarium oxysporum

Streptomycetaceae and Promicromonosporaceae: Two Actinomycetes Families from Moroccan Oat Soils Enhancing Solubilization of Natural Phosphate

Fungal Root Rots of Sugar Beets: A Review of Common Causal Agents and Management Strategies

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