Nitrogen Cycling and Bacterial Community

A special issue of Nitrogen (ISSN 2504-3129).

Deadline for manuscript submissions: closed (30 April 2024) | Viewed by 1158

Special Issue Editor


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Guest Editor
Department of Plant Pathology/Institute of Food and Agriculture Science, North Florida Research and Education Center, University of Florida, Quincy, FL, USA
Interests: plant pathology; plant and soil microbiome; fungal taxonomy and systematics; biological control; PGPR (plant-growth-promoting rhizobacteria)

Special Issue Information

Dear Colleagues,

Nitrogen cycling defines the biogeochemical process in which nitrogen is transformed into various forms, passing from the atmosphere to the soil, to the organism, and back to the atmosphere. Nitrogen plays a vital role in balancing the ecosystem by undergoing various types of transformation. These processes encompass the nitrogen cycle, which affects various biomes with the nitrogen cycle and is the most complicated biogeochemical process.

Microorganisms play a crucial role in N-cycling and regulate the soil N available to plants. The important process of autotrophic nitrification transforms the ammonium oxidation into nitrite and is driven by the process of ammonia oxidizing bacteria and archaea. Various studies have found that microbial community abundancy in plant canopies is due to higher N-concentrations, which increases the plant letter. Moreover, changes in the microbial utilization of nitrogen can also change the bacterial community structure. 

To understand the interrelationship between bacterial community and nitrogen cycling, detailed study is needed at the bacterial species level. In addition, the keystone bacterial genus and species involved in N-cycling in soil should be identified and introduced at a holistic level.

Assessing the relationship of bacterial community composition, abundance, diversity, and dissimilarities with N-cycling using microbiome analysis through a next-generation sequencing approach could be the best possible means of study in the present context.

This Special Issue will cover broad topics that touch the areas of bacterial community composition and diversity and their roles in N-cycling in different land use types.

Dr. Mahesh Adhikari
Guest Editor

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • bacterial community composition
  • bacterial diversity
  • N-cycling
  • land use types
  • bacterial diversity and N-cycling
  • next-generation sequencing (NGS)
  • microbiome

Published Papers (1 paper)

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Research

14 pages, 3622 KiB  
Article
Whole Genome Analysis of Streptomyces spp. Strains Isolated from the Rhizosphere of Vitis vinifera L. Reveals Their Role in Nitrogen and Phosphorus Metabolism
by Gustavo Montes-Montes, Román González-Escobedo, Laila N. Muñoz-Castellanos, Graciela D. Avila-Quezada, Obed Ramírez-Sánchez, Alejandra Borrego-Loya, Ismael Ortiz-Aguirre and Zilia Y. Muñoz-Ramírez
Nitrogen 2024, 5(2), 301-314; https://doi.org/10.3390/nitrogen5020020 - 16 Apr 2024
Viewed by 766
Abstract
The rhizospheric microorganisms of agricultural crops play a crucial role in plant growth and nutrient cycling. In this study, we isolated two Streptomyces strains, Streptomyces sp. LM32 and Streptomyces sp. LM65, from the rhizosphere of Vitis vinifera L. We then conducted genomic analysis [...] Read more.
The rhizospheric microorganisms of agricultural crops play a crucial role in plant growth and nutrient cycling. In this study, we isolated two Streptomyces strains, Streptomyces sp. LM32 and Streptomyces sp. LM65, from the rhizosphere of Vitis vinifera L. We then conducted genomic analysis by assembling, annotating, and inferring phylogenomic information from the whole genome sequences. Streptomyces sp. strain LM32 had a genome size of 8.1 Mb and a GC content of 72.14%, while Streptomyces sp. strain LM65 had a genome size of 7.3 Mb and a GC content of 71%. Through ANI results, as well as phylogenomic, pan-, and core-genome analysis, we found that strain LM32 was closely related to the species S. coelicoflavus, while strain LM65 was closely related to the species S. achromogenes subsp. achromogenes. We annotated the functional categories of genes encoded in both strains, which revealed genes involved in nitrogen and phosphorus metabolism. This suggests that these strains have the potential to enhance nutrient availability in the soil, promoting agricultural sustainability. Additionally, we identified gene clusters associated with nitrate and nitrite ammonification, nitrosative stress, allantoin utilization, ammonia assimilation, denitrifying reductase gene clusters, high-affinity phosphate transporter and control of PHO regulon, polyphosphate, and phosphate metabolism. These findings highlight the ecological roles of these strains in sustainable agriculture, particularly in grapevine and other agricultural crop systems. Full article
(This article belongs to the Special Issue Nitrogen Cycling and Bacterial Community)
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