Microbial Functions of the Rhizosphere

Brahmaprakash, G. P.; Sahu, Pramod Kumar; Lavanya, G.; Nair, Sneha S.; Gangaraddi, Vijaykumar K.; Gupta, Ajay

doi:10.1007/978-981-10-5813-4_10

Cited by 21 publications

(5 citation statements)

References 113 publications

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“…This is due to the positive effect of this bacteria in improving plant growth by colonizing plant roots and modifying the root structure by increasing the number of adventitious roots and the number of root hairs, which leads to the promotion of plant growth [11]. Also, bacteria improve soil fertility by dissolving soil nutrients and making them available for absorption by making them available in a way that facilitates their readiness for uptake by plant roots [12,13] as microorganisms transform the nonform soluble nutrients to the soluble form, improving soil properties and facilitating plant growth [14,15]. The results showed that the treatment of A. chroococcum was significantly superior to other treatments in plant height and number of leaves.…”

Section: Resultsmentioning

confidence: 99%

Efficiency of Bacterial Biofertilizers and Spraying with Nano-Phosphates on Vegetative and Root Growth Indicators of Iris Flowers

Ali,

Mashkoor

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The research was carried out at the research station of the College of Agriculture - University of Kufa during the growing season of 2022-2023 to demonstrate the effect of biofertilizers and phosphate fertilization on the growth of Iris flowers. Bacillus subtilis, Pseudomonas fluorescens, Azotobacter chroococcum by injecting the bacteria into the culture medium before planting the bulbs, and the second was foliar spray using superphosphate Nano-fertilizer at levels 0, 1, or 2 mg/L. The bulbs were cultivated on 10/24/2022 in a factorial experiment with three replications as Randomized Complete Block Design (R.C.B.D). Results showed that when phosphate Nano-fertilizer concentrations rose, so did indicator levels. It was also discovered that regardless of the type of bacteria used for fertilization, the results were the same: an increase in the growth markers of interest. In contrast to most Single and nested transactions, the results showed that the bacteria A. chroococcum at the treatment of P2 fertilization (2 mg/L) recorded the highest values for plant height, number of leaves, vegetative dry weight, number of bulbs, bulb diameter, and root dry weight. In comparison to other varieties of bacteria at the same stage of fertilization, however, it showed no significant differences.

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Section: Resultsmentioning

confidence: 99%

Efficiency of Bacterial Biofertilizers and Spraying with Nano-Phosphates on Vegetative and Root Growth Indicators of Iris Flowers

Ali,

Mashkoor

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Although protozoa (18-250 lb/ac live weight) and soil nematodes (10-260 lb/ac live weight) comprise a relatively small part of the soil biomass, they perform essential functions in the soil environment [81]. Protozoa and small nematodes feeding on bacteria and fungi, collectively known as microbial grazers, release plant-available nutrients and suppress disease [82]. Soil protozoa are reported to interact with AMF species, and collembola are among the soil protozoa which interact with soil fungi [83], however this interaction is not detected in paddy fields.…”

Section: Interactions Between Amf and Other Microorganismsmentioning

confidence: 99%

Arbuscular Mycorrhizal Fungi and Microbes Interaction in Rice Mycorrhizosphere

et al. 2022

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Rice (Oryza sativa L.) is the most widely consumed staple crop for approximately half of the world’s population. Many interactions take place in paddy soil, particularly in the rice mycorrhizosphere region. Arbuscular mycorrhizal fungi (AMF) and soil microbe interactions are among the most important and influential processes that occur, as they significantly influence the plant growth and soil structure properties. Their interactions may be of crucial importance to the sustainable, low-input productivity of paddy ecosystems. In this study, we summarize the major groups of microbial communities interacting with arbuscular mycorrhizal fungi in the rice mycorrhizosphere, and discuss the mechanisms involved in these arbuscular mycorrhizal fungi and microbe interactions. We further highlight the potential application of arbuscular mycorrhizal mutualism in paddy fields, which will be helpful for the production of bioinoculants in the future.

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“…In recent years, based on the relative proximity and influence to the root, the rhizosphere definition has been refined to include three zones: (i) endorhizosphere, which includes portions of the cortex and endoderm, where microorganisms and mineral ions occupy free space between cells (apoplastic space); (ii) rhizoplane, a middle zone adjacent to the root's epidermal cells and mucilage; and (iii) ectorhizosphere, which extends from the rhizoplane out into the bulk soil and is colonized by the microorganisms that are either free-living or non-symbionts [50,51]. The rhizosphere is a complex and dynamic region, where bacteria (including Plant Growth-Promoting Rhizobacteria-PGPR), fungi (including Arbuscular Mycorrhizal Fungi -AMF), oomycetes, viruses and archaea are attracted by chemical compounds (sugars, proteins, fatty acids, organics acids, vitamins, and other cellular components) released in the vicinity of the plant roots [16,52,53]. These rhizodeposits are used as carbon sources by microorganisms and represent an essential source of carbon allocated to the roots and available to plants through photosynthesis [54].…”

Section: Rhizospheric Microorganisms: An Overviewmentioning

confidence: 99%

Plant-Associated Microorganisms as a Potent Bio-Factory of Active Molecules against Multiresistant Pathogens

Cruz¹,

Bogas²,

Sousa³

2021

Antimicrobial Resistance - A One Health Perspective

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Antibiotic-resistant pathogens are a public health threat that has rapidly spread over decades due to continuous and uncontrolled administration of antimicrobial medicines, becoming an ever-increasing worldwide concern. Since the past decade, no significant innovations have been made, so the search for new compounds that face multidrug-resistant pathogens is critically important. Plant-symbiont microorganisms are capable of producing a variety of bioactive natural products, making it possible to treat several infectious diseases. Biotechnological processes using microorganisms have been increasing in recent years since the discovery of Paclitaxel, an important antimitotic produced by the endophyte Taxomyces andreanae. It was isolated for the first time from the native tree of Pacific Taxus brevifolia. Several studies have demonstrated the isolation and characterization of promising and potent substances capable of inhibiting these pathogens. In addition, both rhizospheric and endophytic communities represent an unexplored reserve of unique chemical structures for drug development. This chapter focuses on the potential of plant-derived microorganisms as a source of bioactive substances and the perspectives for further studies and their application.

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Microbial Functions of the Rhizosphere

Cited by 21 publications

References 113 publications

Efficiency of Bacterial Biofertilizers and Spraying with Nano-Phosphates on Vegetative and Root Growth Indicators of Iris Flowers

Efficiency of Bacterial Biofertilizers and Spraying with Nano-Phosphates on Vegetative and Root Growth Indicators of Iris Flowers

Arbuscular Mycorrhizal Fungi and Microbes Interaction in Rice Mycorrhizosphere

Plant-Associated Microorganisms as a Potent Bio-Factory of Active Molecules against Multiresistant Pathogens

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