Valuing each patch of land: utilizing plant-microbe interactions for the betterment of agriculture

Sahab, Sinha; Suhani, Ibha; Singh, Rajeev Pratap

doi:10.1016/b978-0-12-824448-7.00024-3

Cited by 3 publications

(4 citation statements)

References 87 publications

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“…Plant roots were found to be dominated by several genera, including Nitrospira (Root: 0.8–3.3%; Effluent: 0.2–0.7%; encompasses comammox and nitrite-oxidizing bacteria), an unclassified genus in the family Methylophilaceae (Root: 1.8–4.5%; Effluent: 0.0–0.1%; aerobic denitrifiers), Novosphingobium (Root: 1.6–5.9%; Effluent: 0.0–0.3%; organic degraders), an unclassified genus in the family Rhizobiaceae (Root: 0.2–3.2%; Effluent: 0.1–0.4%; nitrogen-fixing bacteria associated with plant growth), and Acidobacteria subgroup 6 (Root: 0.1–3.6%; Effluent: 0.1–0.3%; high nitrogen availability indicator in soil and aquatic environments). , Compared with the aquaculture effluent of both groups, Nitrospira was more abundant in plant roots, while Denitratisoma , was dominant in the aquaculture effluent. The family Rhizobiaceae (often found in the soil rhizosphere of plants and containing plant growth-promoting bacteria) is one of the predominant taxa with a high relative abundance in plant roots.…”

Section: Resultsmentioning

confidence: 99%

“…77 It is worth noting that there were still anaerobic pockets within the system, which potentially contributed to denitrification in the aquaponic system, particularly in the sediment zone of biofilters where fish feces sludge accumulates. 11,28 Plant roots were found to be dominated by several genera, including Nitrospira (Root: 0.8−3.3%; Effluent: 0.2−0.7%; encompasses comammox and nitrite-oxidizing bacteria), 78 an unclassified genus in the family Methylophilaceae (Root: 1.8− 4.5%; Effluent: 0.0−0.1%; aerobic denitrifiers), 79 Novosphingobium (Root: 1.6−5.9%; Effluent: 0.0−0.3%; organic degraders), 80 an unclassified genus in the family Rhizobiaceae (Root: 0.2−3.2%; Effluent: 0.1−0.4%; nitrogen-fixing bacteria associated with plant growth), 81 and Acidobacteria subgroup 6 (Root: 0.1−3.6%; Effluent: 0.1−0.3%; high nitrogen availability indicator in soil and aquatic environments). 28,82 Compared with the aquaculture effluent of both groups, Nitrospira was more abundant in plant roots, while Denitratisoma 83,84 was dominant in the aquaculture effluent.…”

Section: Microbial Community Dynamics 331 Overall Microbial Diversiti...mentioning

confidence: 99%

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Micronanobubble Aeration Enhances Plant Yield and Nitrification in Aquaponic Systems

Marcelino,

Wongkiew,

Shitanaka

et al. 2023

ACS EST Eng.

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Aquaponics is a climate-smart food production system that relies on nutrient recovery from aquaculture effluent. The availability of dissolved oxygen (DO) limits the performance of aquaponic systems. To address this issue, air micronanobubbles (MNBs) were tested as an alternative aeration method. Due to their small size (<50 μm) and long-term stability, MNBs can enhance the gas−liquid mass transfer of oxygen and maintain DO concentrations above saturation, enhancing aerobic biochemical processes. Through 16S rRNA gene metabarcoding and water quality analyses, we investigated the influence of continuous MNB aeration on DO concentrations and carbon−nitrogen cycling. Our results indicated that continuous MNB aeration (K L a 20 = 7.76 ± 0.38 h −1 ) in the grow bed of an aquaponic system increased DO concentrations to 9.31 ± 1.57 mg L −1 without affecting other system components. In comparison, aeration with a conventional diffuser (K L a 20 = 1.73 ± 0.54 h −1 ) maintained lower DO concentrations of 6.32 ± 0.32 mg L −1 on average. Further benefits of MNBs include higher reductions in total solids (16 ± 2%) and volatile solids (32 ± 2%) and an increase in nitrate concentrations over time. Notably, MNB aeration enhanced the total butterhead lettuce yield and root biomass per plant by 35 ± 8% and 20 ± 5%, respectively. While MNB aeration reshaped the microbial community and potentially disturbed certain microbial symbiotic relationships (e.g., Denitratisoma, Thermomonas, and Nitrospira), the overall metabolic pathways remained largely intact. Overall, our study provides insights into the application of MNB aeration to enhance plant biomass production in floating raft aquaponic systems and increase nitrification and remineralization.

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Section: Resultsmentioning

confidence: 99%

Section: Microbial Community Dynamics 331 Overall Microbial Diversiti...mentioning

confidence: 99%

Micronanobubble Aeration Enhances Plant Yield and Nitrification in Aquaponic Systems

Marcelino,

Wongkiew,

Shitanaka

et al. 2023

ACS EST Eng.

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“…The NFB contributes to the plants' nitrogen requirements through biological nitrogen fixation, an essential biological process for plant growth and development. The symbiotic relationship between the rhizobia and NFB is the formation of nodules (specialized nitrogen structure for nitrogen fixation) on the roots of host legume plants [32], which enable the plants to tolerate the harsh stress conditions of soil salinity, temperature, acidity, alkalinity, drought, and metal toxicities [33]. Nevertheless, the potential interactions between arbuscular mycorrhizal fungi (AMF) and nitrogen-fixing bacteria (NFB) in co-inoculations remain inadequately explored.…”

Section: Discussionmentioning

confidence: 99%

Evaluating Microbial Biofertilizers for Root Colonization Potential in Narra (Pterocarpus indicus Willd.) and Their Efficacy in Heavy Metal Remediation

Magsayo,

Aggangan,

Gilbero

et al. 2024

Forests

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Bioremediation technology, another strategy known for restoring degraded environments, utilizes beneficial microorganisms, including arbuscular mycorrhizal fungi (AMF) and nitrogen-fixing bacteria (NFB). Despite its potential, the biological processes of these microorganisms in contaminated sites remain poorly understood, hindering effective pollutant toxicity reduction. Establishing a connection between plant root systems and these microorganisms is crucial for enabling plant survival in heavy metal-contaminated soils. Narra (Pterocarpus indicus Willd.), a leguminous plant, typically associates with symbiotic nitrogen-fixing bacteria, forming nodules in the roots. Additionally, Narra forms a symbiotic relationship with AMF, phosphorus-fixing microbes, making it an ideal tree species for rehabilitating mined-out areas. In this study, five microbial biofertilizers, namely: MYKORICH®, MYKOVAM®, newMYC, newNFB, and combined newMYC+newNFB, plus a control were used to test their root colonization potential on Narra seedlings grown in nickel (Ni) and gold (Au) mined-out soils collected from Taganito Mining Corporation (TMC) and Manila Mining Corporation (MMC) in Claver and Placer, Surigao del Norte, Philippines, respectively. The results showed that newMYC had the highest root colonization in Ni mined-out soil, while MYKORICH® excelled in Au mined-out soil. The AMF spore count was highest in MYKORICH® for Ni mined-out soil and newMYC in Au mined-out soil. NFB colonization was highest in newMYC-treated seedlings for Ni mined-out soil and combined newMYC+newNFB for Au mined-out soil. The microbial biofertilizers utilized in this research, such as MY-KORICH®, MYKOVAM, newMYC, newNFB, and combined newNFB and newMYC, naturally occur in the environment and can be easily extracted. This cost-effective characteristic provides an advantage for mining companies seeking treatments for soil amelioration to rehabilitate mined-out areas.

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“…Soil and water salinity stress influence Sustainability 2023, 15, 11590 2 of 19 physiological, biochemical, and molecular alterations in plants, and that causes a reduction in growth and crop productivity [3,4]. Studies show that plants grown with salinity stress show alterations in physio-biochemical characteristics such as the level of proteins, proline, lipid peroxidation, glutathione reductase, catalase, superoxide dismutase, carotenoid and chlorophyll content as well as soil microbial abundance and their diversity [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Compost and Vermicompost Amendments on Biochemical and Physiological Responses of Lady’s Finger (Abelmoschus esculentus L.) Grown under Different Salinity Gradients

et al. 2023

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In the coming decades, the pressure to use saline water will increase as most of the natural resources with good water quality are being depleted. In order to avoid more stress on the soil plant system, a better understanding of the type of amendments and their integration with the irrigational water quality of any location-specific region is essential. Utilizing salt-affected lands in the best way possible will facilitate food security for the growing human population. An experiment was conducted with the Abelmoschus esculentus L. plant, irrigated with saline water having different NaCl gradients (0, 50, 100 and 150 mM), to evaluate the biochemical and physiological responses under different salinity gradients. Additionally, the effect of compost and vermicompost amendments in soil on plant responses to the changing salinity of irrigated water was observed. The results suggested that the addition of compost and vermicompost in soil not only suppressed the adverse impact of salinity in plants but also increased soil nutrients (TKN, OC, avail. P, avail. K and avail. Ca contents). Moreover, some biochemical parameters and plant growth parameters showed better traits in such manure-amended setups. The enhancement of proline, phenol, ascorbic acid and lipid peroxidation contents in the leaves of Abelmoschus esculentus L. under high salinity levels suggests some secondary metabolite-mediated response possibly due to stress caused by soil salt accumulations. In summary, crop production could be efficiently maintained in saline water-irrigated areas after amending the soils with appropriate organic manure.

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Valuing each patch of land: utilizing plant-microbe interactions for the betterment of agriculture

Cited by 3 publications

References 87 publications

Micronanobubble Aeration Enhances Plant Yield and Nitrification in Aquaponic Systems

Micronanobubble Aeration Enhances Plant Yield and Nitrification in Aquaponic Systems

Evaluating Microbial Biofertilizers for Root Colonization Potential in Narra (Pterocarpus indicus Willd.) and Their Efficacy in Heavy Metal Remediation

Effect of Compost and Vermicompost Amendments on Biochemical and Physiological Responses of Lady’s Finger (Abelmoschus esculentus L.) Grown under Different Salinity Gradients

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