1
|
Dove R, Wolfe ER, Stewart NU, Coleman A, Chavez SH, Ballhorn DJ. Root nodules of red alder (Alnus rubra) and sitka alder (Alnus viridis ssp. sinuata) are inhabited by taxonomically diverse cultivable microbial endophytes. Microbiologyopen 2024; 13:e1422. [PMID: 38847331 PMCID: PMC11157421 DOI: 10.1002/mbo3.1422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 05/27/2024] [Accepted: 05/29/2024] [Indexed: 06/10/2024] Open
Abstract
The root nodules of actinorhizal plants are home to nitrogen-fixing bacterial symbionts, known as Frankia, along with a small percentage of other microorganisms. These include fungal endophytes and non-Frankia bacteria. The taxonomic and functional diversity of the microbial consortia within these root nodules is not well understood. In this study, we surveyed and analyzed the cultivable, non-Frankia fungal and bacterial endophytes of root nodules from red and Sitka alder trees that grow together. We examined their taxonomic diversity, co-occurrence, differences between hosts, and potential functional roles. For the first time, we are reporting numerous fungal endophytes of alder root nodules. These include Sporothrix guttuliformis, Fontanospora sp., Cadophora melinii, an unclassified Cadophora, Ilyonectria destructans, an unclassified Gibberella, Nectria ramulariae, an unclassified Trichoderma, Mycosphaerella tassiana, an unclassified Talaromyces, Coniochaeta sp., and Sistotrema brinkmanii. We are also reporting several bacterial genera for the first time: Collimonas, Psychrobacillus, and Phyllobacterium. Additionally, we are reporting the genus Serratia for the second time, with the first report having been recently published in 2023. Pseudomonas was the most frequently isolated bacterial genus and was found to co-inhabit individual nodules with both fungi and bacteria. We found that the communities of fungal endophytes differed by host species, while the communities of bacterial endophytes did not.
Collapse
Affiliation(s)
- Robyn Dove
- Portland State University Biology DepartmentPortlandOregonUSA
| | - Emily R. Wolfe
- Portland State University Biology DepartmentPortlandOregonUSA
- Portland State UniversityPortlandOregonUSA
| | - Nathan U. Stewart
- Portland State University Biology DepartmentPortlandOregonUSA
- Portland State UniversityPortlandOregonUSA
| | - Abigail Coleman
- Portland State University Biology DepartmentPortlandOregonUSA
- Oregon Health and Science UniversityPortlandOregonUSA
| | - Sara Herrejon Chavez
- Portland State University Biology DepartmentPortlandOregonUSA
- University of California BerkeleyBerkeleyCaliforniaUSA
| | - Daniel J. Ballhorn
- Portland State University Biology DepartmentPortlandOregonUSA
- Portland State UniversityPortlandOregonUSA
| |
Collapse
|
2
|
Dip DP, Sannazzaro AI, Otondo J, Pistorio M, Estrella MJ. Exploring Phosphate Solubilizing Bacterial Communities in Rhizospheres of Native and Exotic Forage Grasses in Alkaline-Sodic Soils of the Flooding Pampa. Curr Microbiol 2024; 81:189. [PMID: 38789812 DOI: 10.1007/s00284-024-03704-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 04/16/2024] [Indexed: 05/26/2024]
Abstract
The flooding pampa is one of the most important cattle-raising regions in Argentina. In this region, natural pastures are dominated by low-productivity native grass species, which are the main feed for livestock. In this context, previous studies in the region with the subtropical exotic grass Panicum coloratum highlight it as a promising species to improve pasture productivity. Cultivable phosphate solubilizing bacteria (PSB) communities associated to native (Sporobolus indicus) and exotic (Panicum coloratum) forage grasses adapted to alkaline-sodic soils of the flooding pampa were analyzed. PSB represented 2-14% of cultivable rhizobacteria and Box-PCR fingerprinting revealed a high genetic diversity in both rhizospheres. Taxonomic identification by MALDI-TOF showed that PSB populations of P. coloratum and S. indicus rhizospheres are dominated by the phylum Proteobacteria (92,51% and 96,60% respectively) and to a lesser extent (< 10%), by the phyla Actinobacteria and Firmicutes. At the genus level, both PSB populations were dominated by Enterobacter and Pseudomonas. Siderophore production, nitrogen fixation, and indoleacetic acid production were detected in a variety of PSB genera of both plant species. A higher proportion of siderophore and IAA producers were associated to P. coloratum than S. indicus, probably reflecting a greater dependence of the exotic species on rhizospheric microorganisms to satisfy its nutritional requirements in the soils of the flooding pampa. This work provides a novel knowledge about functional groups of bacteria associated to plants given that there are no previous reports dedicated to the characterization of PSB rhizosphere communities of S indicus and P coloratum. Finally, it should be noted that the collection obtained in this study can be useful for the development of bioinputs that allow reducing the use of chemical fertilizers, providing sustainability to pasture production systems for livestock.
Collapse
Affiliation(s)
- Diana Patricia Dip
- Instituto Tecnológico Chascomús (INTECH), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - Universidad Nacional de San Martín (UNSAM), Avenida Intendente Marino, Km 8.2, 7130, Chascomús, Buenos Aires, Argentina
| | - Analía Inés Sannazzaro
- Instituto Tecnológico Chascomús (INTECH), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - Universidad Nacional de San Martín (UNSAM), Avenida Intendente Marino, Km 8.2, 7130, Chascomús, Buenos Aires, Argentina
| | - José Otondo
- Instituto Nacional de Tecnología Agropecuaria INTA, EEA Cuenca del Salado, Chascomús, Argentina
| | - Mariano Pistorio
- Instituto de Biotecnología y Biología Molecular (IBBM), Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de La Plata (UNLP), La Plata, Buenos Aires, Argentina
| | - María Julia Estrella
- Instituto Tecnológico Chascomús (INTECH), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - Universidad Nacional de San Martín (UNSAM), Avenida Intendente Marino, Km 8.2, 7130, Chascomús, Buenos Aires, Argentina.
| |
Collapse
|
3
|
Zhao Y, Ding WJ, Xu L, Sun JQ. A comprehensive comparative genomic analysis revealed that plant growth promoting traits are ubiquitous in strains of Stenotrophomonas. Front Microbiol 2024; 15:1395477. [PMID: 38817968 PMCID: PMC11138164 DOI: 10.3389/fmicb.2024.1395477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 04/29/2024] [Indexed: 06/01/2024] Open
Abstract
Stenotrophomonas strains, which are often described as plant growth promoting (PGP) bacteria, are ubiquitous in many environments. A total of 213 genomes of strains of Stenotrophomonas were analyzed using comparative genomics to better understand the ecological roles of these bacteria in the environment. The pan-genome of the 213 strains of Stenotrophomonas consists of 27,186 gene families, including 710 core gene families, 11,039 unique genes and 15,437 accessory genes. Nearly all strains of Stenotrophomonas harbor the genes for GH3-family cellulose degradation and GH2- and GH31-family hemicellulose hydrolase, as well as intact glycolysis and tricarboxylic acid cycle pathways. These abilities suggest that the strains of this genus can easily obtain carbon and energy from the environment. The Stenotrophomonas strains can respond to oxidative stress by synthesizing catalase, superoxide dismutase, methionine sulfoxide reductase, and disulfide isomerase, as well as managing their osmotic balance by accumulating potassium and synthesizing compatible solutes, such as betaine, trehalose, glutamate, and proline. Each Stenotrophomonas strain also contains many genes for resistance to antibiotics and heavy metals. These genes that mediate stress tolerance increase the ability of Stenotrophomonas strains to survive in extreme environments. In addition, many functional genes related to attachment and plant colonization, growth promotion and biocontrol were identified. In detail, the genes associated with flagellar assembly, motility, chemotaxis and biofilm formation enable the strains of Stenotrophomonas to effectively colonize host plants. The presence of genes for phosphate-solubilization and siderophore production and the polyamine, indole-3-acetic acid, and cytokinin biosynthetic pathways confer the ability to promote plant growth. These strains can produce antimicrobial compounds, chitinases, lipases and proteases. Each Stenotrophomonas genome contained 1-9 prophages and 17-60 genomic islands, and the genes related to antibiotic and heavy metal resistance and the biosynthesis of polyamines, indole-3-acetic acid, and cytokinin may be acquired by horizontal gene transfer. This study demonstrates that strains of Stenotrophomonas are highly adaptable for different environments and have strong potential for use as plant growth-promoting bacteria.
Collapse
Affiliation(s)
- Yang Zhao
- Lab for Microbial Resources, School of Ecology and Environment, Inner Mongolia University, Hohhot, China
| | - Wen-Jing Ding
- Lab for Microbial Resources, School of Ecology and Environment, Inner Mongolia University, Hohhot, China
| | - Lian Xu
- Jiangsu Key Lab for Organic Solid Waste Utilization, Educational Ministry Engineering Center of Resource-saving Fertilizers, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, China
| | - Ji-Quan Sun
- Lab for Microbial Resources, School of Ecology and Environment, Inner Mongolia University, Hohhot, China
| |
Collapse
|
4
|
Feng Y, He J, Zhang H, Jia X, Hu Y, Ye J, Gu X, Zhang X, Chen H. Phosphate solubilizing microorganisms: a sustainability strategy to improve urban ecosystems. Front Microbiol 2024; 14:1320853. [PMID: 38249462 PMCID: PMC10797123 DOI: 10.3389/fmicb.2023.1320853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 12/15/2023] [Indexed: 01/23/2024] Open
Abstract
Intensification of urban construction has gradually destroyed human habitat ecosystems. Plants, which serve as the foundation of ecosystems, require green, low-cost, and effective technologies to sustain their growth in stressful environments. A total of 286 keywords and 10 clusters from the bibliometric analysis of 529 articles (1999-2023) indicate the increasing importance of research on microbial functionality in landscape ecosystems. Phosphate solubilizing microorganisms (PSMs) also improve plant disease resistance, adaptability, and survival. PSMs are widely used to promote plant growth and improve ecological quality. They can increase the availability of phosphorus in the soil and reduce the dependence of plants on chemical fertilizers. Microorganisms regulate phosphorus as key tools in landscape ecosystems. Most importantly, in urban and rural landscape practices, PSMs can be applied to green spaces, residential landscapes, road greening, and nursery planting, which play significant roles in improving vegetation coverage, enhancing plant resistance, improving environmental quality, and mitigating the heat island effect. PSMs are also helpful in restoring the ecological environment and biodiversity of polluted areas, such as brownfields, to provide residents with a more liveable living environment. Therefore, the multiple efficacies of PSM are expected to play increasingly important roles in the construction of urban and rural landscape ecosystems.
Collapse
Affiliation(s)
- Yang Feng
- School of Art and Design, Xijing University, Xi'an, China
- Shaanxi Provincial Research Center of Public Scientific Quality Development and Cultural and Creative Industry Development, Xi'an, China
| | - Jing He
- School of Art and Design, Xijing University, Xi'an, China
| | - Hongchen Zhang
- School of Art and Design, Xijing University, Xi'an, China
| | - Xiaolin Jia
- School of Art and Design, Xijing University, Xi'an, China
- Shaanxi Provincial Research Center of Public Scientific Quality Development and Cultural and Creative Industry Development, Xi'an, China
| | - Youning Hu
- School of Biological and Environmental Engineering, Xi’an University, Xi'an, China
| | - Jianqing Ye
- School of Art and Design, Xijing University, Xi'an, China
| | - Xinyuan Gu
- School of Art and Design, Xijing University, Xi'an, China
| | - Xinping Zhang
- School of Art and Design, Xi’an University of Technology, Xi'an, China
| | - Haoming Chen
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, China
| |
Collapse
|
5
|
Hu X, Chen H. Phosphate solubilizing microorganism: a green measure to effectively control and regulate heavy metal pollution in agricultural soils. Front Microbiol 2023; 14:1193670. [PMID: 37434711 PMCID: PMC10330761 DOI: 10.3389/fmicb.2023.1193670] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 06/12/2023] [Indexed: 07/13/2023] Open
|
6
|
Wang J, Qin S, Fan R, Peng Q, Hu X, Yang L, Liu Z, Baccelli I, Migheli Q, Berg G, Chen X, Cernava T. Plant Growth Promotion and Biocontrol of Leaf Blight Caused by Nigrospora sphaerica on Passion Fruit by Endophytic Bacillus subtilis Strain GUCC4. J Fungi (Basel) 2023; 9:jof9020132. [PMID: 36836247 PMCID: PMC9966402 DOI: 10.3390/jof9020132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/06/2023] [Accepted: 01/10/2023] [Indexed: 01/20/2023] Open
Abstract
Passion fruit (Passiflora edulis Sims) is widely cultivated in tropic and sub-tropic regions for the production of fruit, flowers, cosmetics, and for pharmacological applications. Its high economic, nutritional, and medical values elicit the market demand, and the growing areas are rapidly increasing. Leaf blight caused by Nigrospora sphaerica is a new and emerging disease of passion fruit in Guizhou, in southwest China, where the unique karst mountainous landscape and climate conditions are considered potential areas of expansion for passion fruit production. Bacillus species are the most common biocontrol and plant-growth-promotion bacteria (PGPB) resources in agricultural systems. However, little is known about the endophytic existence of Bacillus spp. in the passion fruit phyllosphere as well as their potential as biocontrol agents and PGPB. In this study, 44 endophytic strains were isolated from 15 healthy passion fruit leaves, obtained from Guangxi province, China. Through purification and molecular identification, 42 of the isolates were ascribed to Bacillus species. Their inhibitory activity against N. sphaerica was tested in vitro. Eleven endophytic Bacillus spp. strains inhibited the pathogen by >65%. All of them produced biocontrol- and plant-growth-promotion-related metabolites, including indole-3-acetic acid (IAA), protease, cellulase, phosphatase, and solubilized phosphate. Furthermore, the plant growth promotion traits of the above 11 endophytic Bacillus strains were tested on passion fruit seedlings. One isolate, coded B. subtilis GUCC4, significantly increased passion fruit stem diameter, plant height, leaf length, leaf surface, fresh weight, and dry weight. In addition, B. subtilis GUCC4 reduced the proline content, which indicated its potential to positively regulate passion fruit biochemical properties and resulted in plant growth promotion effects. Finally, the biocontrol efficiencies of B. subtilis GUCC4 against N. sphaerica were determined in vivo under greenhouse conditions. Similarly to the fungicide mancozeb and to a commercial B. subtilis-based biofungicide, B. subtilis GUCC4 significantly reduced disease severity. These results suggest that B. subtilis GUCC4 has great potential as a biological control agent and as PGPB on passion fruit.
Collapse
Affiliation(s)
- Junrong Wang
- College of Agriculture, College of Tobacco Science, Guizhou University, Guiyang 550025, China
- International Jointed Institute of Plant Microbial Ecology and Resource Management in Guizhou University, Ministry of Agriculture, China Association of Agricultural Science Societies, Guizhou University, Guiyang 550025, China
- Guizhou-Europe Environmental Biotechnology and Agricultural Informatics Oversea Innovation Center in Guizhou University, Guizhou Provincial Science and Technology Department, Guiyang 550025, China
- College of Ecology and Environment, Tibet University, Lhasa 850012, China
| | - Shun Qin
- College of Agriculture, College of Tobacco Science, Guizhou University, Guiyang 550025, China
- International Jointed Institute of Plant Microbial Ecology and Resource Management in Guizhou University, Ministry of Agriculture, China Association of Agricultural Science Societies, Guizhou University, Guiyang 550025, China
- Guizhou-Europe Environmental Biotechnology and Agricultural Informatics Oversea Innovation Center in Guizhou University, Guizhou Provincial Science and Technology Department, Guiyang 550025, China
| | - Ruidong Fan
- College of Agriculture, College of Tobacco Science, Guizhou University, Guiyang 550025, China
- International Jointed Institute of Plant Microbial Ecology and Resource Management in Guizhou University, Ministry of Agriculture, China Association of Agricultural Science Societies, Guizhou University, Guiyang 550025, China
- Guizhou-Europe Environmental Biotechnology and Agricultural Informatics Oversea Innovation Center in Guizhou University, Guizhou Provincial Science and Technology Department, Guiyang 550025, China
| | - Qiang Peng
- College of Agriculture, College of Tobacco Science, Guizhou University, Guiyang 550025, China
- International Jointed Institute of Plant Microbial Ecology and Resource Management in Guizhou University, Ministry of Agriculture, China Association of Agricultural Science Societies, Guizhou University, Guiyang 550025, China
- Guizhou-Europe Environmental Biotechnology and Agricultural Informatics Oversea Innovation Center in Guizhou University, Guizhou Provincial Science and Technology Department, Guiyang 550025, China
| | - Xiaojing Hu
- College of Agriculture, College of Tobacco Science, Guizhou University, Guiyang 550025, China
- International Jointed Institute of Plant Microbial Ecology and Resource Management in Guizhou University, Ministry of Agriculture, China Association of Agricultural Science Societies, Guizhou University, Guiyang 550025, China
- Guizhou-Europe Environmental Biotechnology and Agricultural Informatics Oversea Innovation Center in Guizhou University, Guizhou Provincial Science and Technology Department, Guiyang 550025, China
| | - Liu Yang
- Guangxi Crop Genetic Improvement Biotechnology Laboratory, Nanning 530007, China
| | - Zengliang Liu
- Microbiology Research Institute, Guangxi Agricultural Science Academy, Nanning 530007, China
| | - Ivan Baccelli
- Institute for Sustainable Plant Protection, National Research Council of Italy (CNR), 50019 Sesto Fiorentino, Italy
| | - Quirico Migheli
- Dipartimento di Agraria and NRD–Nucleo di Ricerca sulla Desertificazione, Università degli Studi di Sassari, 07100 Sassari, Italy
| | - Gabriele Berg
- Institute of Environmental Biotechnology, Graz University of Technology, 8010 Graz, Austria
| | - Xiaoyulong Chen
- College of Agriculture, College of Tobacco Science, Guizhou University, Guiyang 550025, China
- International Jointed Institute of Plant Microbial Ecology and Resource Management in Guizhou University, Ministry of Agriculture, China Association of Agricultural Science Societies, Guizhou University, Guiyang 550025, China
- Guizhou-Europe Environmental Biotechnology and Agricultural Informatics Oversea Innovation Center in Guizhou University, Guizhou Provincial Science and Technology Department, Guiyang 550025, China
- College of Ecology and Environment, Tibet University, Lhasa 850012, China
- Correspondence: (X.C.); (T.C.)
| | - Tomislav Cernava
- College of Agriculture, College of Tobacco Science, Guizhou University, Guiyang 550025, China
- Institute of Environmental Biotechnology, Graz University of Technology, 8010 Graz, Austria
- Correspondence: (X.C.); (T.C.)
| |
Collapse
|
7
|
Ooi YS, Mohamed Nor NMI, Furusawa G, Tharek M, Ghazali AH. Application of Bacterial Endophytes to Control Bacterial Leaf Blight Disease and Promote Rice Growth. THE PLANT PATHOLOGY JOURNAL 2022; 38:490-502. [PMID: 36221921 PMCID: PMC9561159 DOI: 10.5423/ppj.oa.01.2022.0014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 08/05/2022] [Accepted: 08/09/2022] [Indexed: 06/16/2023]
Abstract
Xanthomonas oryzae pv. oryzae (Xoo) causes bacterial leaf blight (BLB) disease in rice (Oryza sativa L.) and it is among the most destructive pathogen responsible for severe yield losses. Potential bacterial biocontrol agents (BCAs) with plant growth promotion (PGP) abilities can be applied to better manage the BLB disease and increase crop yield, compared to current conventional practices. Thus, this study aimed to isolate, screen, and identify potential BCAs with PGP abilities. Isolation of the BCAs was performed from internal plant tissues and rhizosphere soil of healthy and Xoo-infected rice. A total of 18 bacterial strains were successfully screened for in vitro antagonistic ability against Xoo, siderophore production and PGP potentials. Among the bacterial strains, 3 endophytes, Bacillus sp. strain USML8, Bacillus sp. strain USML9, and Bacillus sp. strain USMR1 which were isolated from diseased plants harbored the BCA traits and significantly reduced leaf blight severity of rice. Simultaneously, the endophytic BCAs also possessed plant growth promoting traits and were able to enhance rice growth. Application of the selected endophytes (BCAs-PGP) at the early growth stage of rice exhibited potential in suppressing BLB disease and promoting rice growth.
Collapse
Affiliation(s)
- Ying Shing Ooi
- School of Biological Sciences, Universiti Sains Malaysia, 11800 Minden, Penang,
Malaysia
| | - Nik M. I. Mohamed Nor
- School of Biological Sciences, Universiti Sains Malaysia, 11800 Minden, Penang,
Malaysia
| | - Go Furusawa
- Centre for Chemical Biology, Sains@USM, Universiti Sains Malaysia, Level 1, Block B, 11900 Bayan Lepas, Penang,
Malaysia
| | - Munirah Tharek
- Soil Science, Water and Fertilizer Research Centre, MARDI, 43400 Serdang, Selangor,
Malaysia
| | - Amir H. Ghazali
- School of Biological Sciences, Universiti Sains Malaysia, 11800 Minden, Penang,
Malaysia
| |
Collapse
|
8
|
Byregowda R, Prasad SR, Oelmüller R, Nataraja KN, Prasanna Kumar MK. Is Endophytic Colonization of Host Plants a Method of Alleviating Drought Stress? Conceptualizing the Hidden World of Endophytes. Int J Mol Sci 2022; 23:ijms23169194. [PMID: 36012460 PMCID: PMC9408852 DOI: 10.3390/ijms23169194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/12/2022] [Accepted: 08/13/2022] [Indexed: 11/16/2022] Open
Abstract
In the wake of changing climatic conditions, plants are frequently exposed to a wide range of biotic and abiotic stresses at various stages of their development, all of which negatively affect their growth, development, and productivity. Drought is one of the most devastating abiotic stresses for most cultivated crops, particularly in arid and semiarid environments. Conventional breeding and biotechnological approaches are used to generate drought-tolerant crop plants. However, these techniques are costly and time-consuming. Plant-colonizing microbes, notably, endophytic fungi, have received increasing attention in recent years since they can boost plant growth and yield and can strengthen plant responses to abiotic stress. In this review, we describe these microorganisms and their relationship with host plants, summarize the current knowledge on how they “reprogram” the plants to promote their growth, productivity, and drought tolerance, and explain why they are promising agents in modern agriculture.
Collapse
Affiliation(s)
- Roopashree Byregowda
- Department of Seed Science and Technology, University of Agricultural Sciences, Bangalore 560065, India
- Department of Plant Physiology, Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich-Schiller-University, 07743 Jena, Germany
| | | | - Ralf Oelmüller
- Department of Plant Physiology, Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich-Schiller-University, 07743 Jena, Germany
- Correspondence:
| | - Karaba N. Nataraja
- Department of Crop Physiology, University of Agricultural Sciences, Bangalore 560065, India
| | - M. K. Prasanna Kumar
- Department of Plant Pathology, University of Agricultural Sciences, Bangalore 560065, India
| |
Collapse
|
9
|
Maldonado JE, Gaete A, Mandakovic D, Aguado-Norese C, Aguilar M, Gutiérrez RA, González M. Partners to survive: Hoffmannseggia doellii root-associated microbiome at the Atacama Desert. THE NEW PHYTOLOGIST 2022; 234:2126-2139. [PMID: 35274744 DOI: 10.1111/nph.18080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 02/28/2022] [Indexed: 06/14/2023]
Abstract
The discovery and characterization of plant species adapted to extreme environmental conditions have become increasingly important. Hoffmannseggia doellii is a perennial herb endemic to the Chilean Atacama Desert that grows in the western Andes between 2800 and 3600 m above sea level. Its growing habitat is characterized by high radiation and low water and nutrient availability. Under these conditions, H. doellii can grow, reproduce, and develop an edible tuberous root. We characterized the H. doellii soil-associated microbiomes to understand the biotic factors that could influence their surprising ability to survive. We found an increased number of observed species and higher phylogenetic diversity of bacteria and fungi on H. doellii root soils compared with bare soil (BS) along different sites and to soil microbiomes of other plant species. Also, the H. doellii-associated microbiome had a higher incidence of overall positive interactions and fungal within-kingdom interactions than their corresponding BS network. These findings suggest a microbial diversity soil modulation mechanism that may be a characteristic of highly tolerant plants to diverse and extreme environments. Furthermore, since H. doellii is related to important cultivated crops, our results create an opportunity for future studies on climate change adaptation of crop plants.
Collapse
Affiliation(s)
- Jonathan E Maldonado
- FONDAP Center for Genome Regulation, Santiago, 8370415, Chile
- Departamento de Genética Molecular y Microbiología, ANID-Millennium Science Initiative Program-Millennium Institute for Integrative Biology (iBio), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, 7500565, Chile
- Laboratorio de Multiómica Vegetal y Bioinformática, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, 9170022, Chile
| | - Alexis Gaete
- FONDAP Center for Genome Regulation, Santiago, 8370415, Chile
- Laboratorio de Bioinformática y Expresión Génica, INTA, Universidad de Chile, Santiago, 7830490, Chile
| | - Dinka Mandakovic
- GEMA Center for Genomics, Ecology and Environment, Universidad Mayor, Santiago, 8580745, Chile
| | - Constanza Aguado-Norese
- FONDAP Center for Genome Regulation, Santiago, 8370415, Chile
- Laboratorio de Bioinformática y Expresión Génica, INTA, Universidad de Chile, Santiago, 7830490, Chile
| | - Melissa Aguilar
- FONDAP Center for Genome Regulation, Santiago, 8370415, Chile
- Departamento de Genética Molecular y Microbiología, ANID-Millennium Science Initiative Program-Millennium Institute for Integrative Biology (iBio), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, 7500565, Chile
| | - Rodrigo A Gutiérrez
- FONDAP Center for Genome Regulation, Santiago, 8370415, Chile
- Departamento de Genética Molecular y Microbiología, ANID-Millennium Science Initiative Program-Millennium Institute for Integrative Biology (iBio), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, 7500565, Chile
| | - Mauricio González
- FONDAP Center for Genome Regulation, Santiago, 8370415, Chile
- Laboratorio de Bioinformática y Expresión Génica, INTA, Universidad de Chile, Santiago, 7830490, Chile
| |
Collapse
|
10
|
Xu S, Zhao Y, Peng Y, Shi Y, Xie X, Chai A, Li B, Li L. Comparative Genomics Assisted Functional Characterization of Rahnella aceris ZF458 as a Novel Plant Growth Promoting Rhizobacterium. Front Microbiol 2022; 13:850084. [PMID: 35444623 PMCID: PMC9015054 DOI: 10.3389/fmicb.2022.850084] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 02/24/2022] [Indexed: 11/25/2022] Open
Abstract
Many Rahnella strains have been widely described as plant growth-promoting rhizobacteria with the potential to benefit plant growth and protect plants from pathogens. R. aceris ZF458 is a beneficial plant bacterium isolated from swamp soil with the potential for biocontrol. Strain ZF458 has shown broad-spectrum antagonistic activities against a variety of plant pathogens and exhibited a dramatic effect on controlling Agrobacterium tumefaciens in sunflowers. The R. aceris ZF458 genome sequence contained a 4,861,340-bp circular chromosome and two plasmids, with an average G + C content of 52.20%. Phylogenetic analysis demonstrated that R. aceris ZF458 was closely related to R. aceris SAP-19. Genome annotation and comparative genomics identified the conservation and specificity of large numbers of genes associated with nitrogen fixation, plant growth hormone production, organic acid biosynthesis and pyrroloquinoline quinone production that specific to benefiting plants in strain ZF458. In addition, numerous conserved genes associated with environmental adaption, including the bacterial secretion system, selenium metabolism, two-component system, flagella biosynthesis, chemotaxis, and acid resistance, were also identified in the ZF458 genome. Overall, this was the first study to systematically analyze the genes linked with plant growth promotion and environmental adaption in R. aceris. The aim of this study was to derive genomic information that would provide an in-depth insight of the mechanisms of plant growth-promoting rhizobacteria, and could be further exploited to improve the application of R. aceris ZF458 in the agriculture field.
Collapse
Affiliation(s)
- Shuai Xu
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yurong Zhao
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yue Peng
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yanxia Shi
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xuewen Xie
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ali Chai
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Baoju Li
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Lei Li
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| |
Collapse
|
11
|
Shi W, Xing Y, Zhu Y, Gao N, Ying Y. Diverse responses of pqqC- and phoD-harbouring bacterial communities to variation in soil properties of Moso bamboo forests. Microb Biotechnol 2022; 15:2097-2111. [PMID: 35298867 PMCID: PMC9249317 DOI: 10.1111/1751-7915.14029] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 03/02/2022] [Accepted: 03/03/2022] [Indexed: 11/30/2022] Open
Abstract
Phosphate‐mobilizing bacteria (PMB) play a critical role in the regulation of phosphorus availability in the soil. The microbial genes pqqC and phoD encode pyrroloquinoline quinone synthase and bacterial alkaline phosphatase, respectively, which regulate inorganic and organic phosphorus mobilization, and are therefore used as PMB markers. We examined the effects of soil properties in three Moso bamboo forest sites on the PMB communities that were profiled using high‐throughput sequencing. We observed differentiated responses of pqqC‐ and phoD‐harbouring PMB communities to various soil conditions. There was significant variation among the sites in the diversity and structure of the phoD‐harbouring community, which correlated with variation in phosphorus levels and non‐capillary porosity; soil organic carbon and soil water content also affected the structure of the phoD‐harbouring community. However, no significant difference in the diversity of pqqC‐harbouring community was observed among different sites, while the structure of the pqqC‐harbouring bacteria community was affected by soil organic carbon and soil total nitrogen, but not soil phosphorus levels. Overall, changes in soil conditions affected the phoD‐harbouring community more than the pqqC‐harbouring community. These findings provide a new insight to explore the effects of soil conditions on microbial communities that solubilize inorganic phosphate and mineralize organic phosphate.
Collapse
Affiliation(s)
- Wenhui Shi
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China
| | - Yijing Xing
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China
| | - Ying Zhu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China
| | - Ning Gao
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China
| | - Yeqing Ying
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China
| |
Collapse
|
12
|
Gholizadeh S, Mohammadi SA, Salekdeh GH. Changes in root microbiome during wheat evolution. BMC Microbiol 2022; 22:64. [PMID: 35219318 PMCID: PMC8881823 DOI: 10.1186/s12866-022-02467-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Accepted: 02/08/2022] [Indexed: 12/20/2022] Open
Abstract
Abstract
Background
Although coevolutionary signatures of host-microbe interactions are considered to engineer the healthy microbiome of humans, little is known about the changes in root-microbiome during plant evolution. To understand how the composition of the wheat and its ancestral species microbiome have changed over the evolutionary processes, we performed a 16S rRNA metagenomic analysis on rhizobacterial communities associated with a phylogenetic framework of four Triticum species T. urartu, T. turgidum, T. durum, and T. aestivum along with their ancestral species Aegilops speltoides, and Ae. tauschii during vegetative and reproductive stages.
Results
In this study, we illustrated that the genome contents of wild species Aegilops speltoides and Ae. tauschii can be significant factors determining the composition of root-associated bacterial communities in domesticated bread wheat. Although it was found that domestication and modern breeding practices might have had a significant impact on microbiome-plant interactions especially at the reproductive stage, we observed an extensive and selective control by wheat genotypes on associated rhizobacterial communities at the same time. Our data also showed a strong genotypic variation within species of T. aestivum and Ae. tauschii, suggesting potential breeding targets for plants surveyed.
Conclusions
This study performed with different genotypes of Triticum and Aegilops species is the first study showing that the genome contents of Ae. speltoides and Ae. tauschii along with domestication-related changes can be significant factors determining the composition of root-associated bacterial communities in bread wheat. It is also indirect evidence that shows a very extensive range of host traits and genes are probably involved in host-microbe interactions. Therefore, understanding the wheat root-associated microbiome needs to take into consideration of its polygenetic mosaic nature.
Collapse
|
13
|
Arabidopsis Growth-Promotion and Root Architecture Responses to the Beneficial Rhizobacterium Phyllobacterium brassicacearum Strain STM196 Are Independent of the Nitrate Assimilatory Pathway. PLANTS 2022; 11:plants11010128. [PMID: 35009131 PMCID: PMC8747170 DOI: 10.3390/plants11010128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 12/22/2021] [Accepted: 12/28/2021] [Indexed: 11/16/2022]
Abstract
Phyllobacterium brassicacearum STM196, a plant growth-promoting rhizobacterium isolated from roots of oilseed rape, stimulates Arabidopsis growth. We have previously shown that the NRT2.5 and NRT2.6 genes are required for this growth promotion response. Since these genes are members of the NRT2 family of nitrate transporters, the nitrogen assimilatory pathway could be involved in growth promotion by STM196. We address this hypothesis using two nitrate reductase mutants, G5 deleted in the major nitrate reductase gene NIA2 and G′4-3 altered in both NIA1 and NIA2 genes. Both mutants had a reduced growth rate and STM196 failed to increase their biomass production on a medium containing NO3− as the sole nitrogen source. However, they both displayed similar growth promotion by STM196 when grown on an NH4+ medium. STM196 was able to stimulate lateral roots development of the mutants under both nutrition conditions. Altogether, our results indicate that the nitrate assimilatory metabolism is not a primary target of STM196 interaction and is not involved in the root developmental response. The NIA1 transcript level was reduced in the shoots of nrt2.5 and nrt2.6 mutants suggesting a role for this nitrate reductase isoform independently from its role in nitrate assimilation.
Collapse
|
14
|
Basu K, Kharkwal AC, Varma A. Pseudomonas as Biocontrol Agent for Fungal Disease Management in Rice Crop. Fungal Biol 2022. [DOI: 10.1007/978-3-031-04805-0_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
|
15
|
Al-Tarawneh A, Khleifat KM, Tarawneh IN, Shiyyab K, El-Hasan T, Sprocati AR, Alisi C, Tasso F, Alqaraleh M. Phenol biodegradation by plant growth promoting bacterium, S. odorifera: kinetic modeling and process optimization. Arch Microbiol 2021; 204:104. [PMID: 34967929 DOI: 10.1007/s00203-021-02691-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/17/2021] [Accepted: 11/01/2021] [Indexed: 11/25/2022]
Abstract
One of the main organic pollutants that could result from industrial products and chemical transformations is phenol. In the current study, the kinetics of Serratia odorifera, which was isolated from arable soil, was studied by growing it on broth minimal medium spiked with phenol as only carbon source and energy. The newly isolated plant growth-promoting bacterium (PGPB), S. odorifera, was used for the first time for phenol biodegradation. The growth kinetics parameters (phenol-dependent) including maximum specific growth rate (μmax), half-saturation coefficient (Ks), and the Haldane's growth kinetics inhibition coefficient (Ki), were tested via Haldane inhibition model and resulted on the 0.469 (h -1), 26.6 (mgL-1), and 292 (mgL-1), respectively. The sum of squared error (SSR) of 4.89 × 10-3 was fitted to the experimental data by Haldane equation. The results of phenol biodegradation were fitted into the modified Gombertz model. The increase of phenol concentrations led to increases in both the rate of phenol biodegradation and lagging time. The optimal phenol biodegradation and bacterial growth obtained by S. odorifera, were at 28 °C incubation temperature and a pH of 7.0. The pathway of phenol biodegradation by S. odorifera was proposed in the current study to provide a new insight into synchronization of phenol biodegradation and plant growth-promoting bacteria. This may play an important role in remediation of phenol-contaminated soil besides promoting the plant growth, thus lessening the plant stress.
Collapse
Affiliation(s)
- Amjad Al-Tarawneh
- Prince Faisal Center for Dead Sea, Environmental and Energy Research, Mutah University, Al-Karak, Jordan
| | - Khaled M Khleifat
- Department of Biology, College of Science, Mutah University, Al-Karak, 61710, Jordan.
- Faculty of Allied Medical Sciences, Al-Ahliyya Amman University, Amman, 19328, Jordan.
| | - Ibrahim N Tarawneh
- Department of Chemistry, Al-Balqa Applied University, Al-Salt, 19117, Jordan
| | - Kholoud Shiyyab
- Department of Biology, College of Science, Mutah University, Al-Karak, 61710, Jordan
| | - Tayel El-Hasan
- Department of Chemistry, College of Science, Mutah University, Al-Karak, Jordan
| | - Anna Rosa Sprocati
- Territorial and Production Systems Sustainability Department, ENEA, via Anguillarese 301, 00123, Rome, Italy
| | - Chiara Alisi
- Territorial and Production Systems Sustainability Department, ENEA, via Anguillarese 301, 00123, Rome, Italy
| | - Flavia Tasso
- Territorial and Production Systems Sustainability Department, ENEA, via Anguillarese 301, 00123, Rome, Italy
| | - Moath Alqaraleh
- Pharmacological and Diagnostic Research Center (PDRC), Faculty of Pharmacy, Al-Ahliyya Amman University, Amman, 19328, Jordan
| |
Collapse
|
16
|
Jiang H, Li S, Wang T, Chi X, Qi P, Chen G. Interaction Between Halotolerant Phosphate-Solubilizing Bacteria ( Providencia rettgeri Strain TPM23) and Rock Phosphate Improves Soil Biochemical Properties and Peanut Growth in Saline Soil. Front Microbiol 2021; 12:777351. [PMID: 35027913 PMCID: PMC8751486 DOI: 10.3389/fmicb.2021.777351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 11/17/2021] [Indexed: 11/21/2022] Open
Abstract
Soil salinity has adverse effects on soil microbial activity and nutrient cycles and therefore limits crop growth and yield. Amendments with halotolerant phosphate-solubilizing bacteria (PSB) and rock phosphate (RP) may improve properties of saline soil. In this study, we investigated the effects of RP either alone or in combination with PSB (Providencia rettgeri strain TPM23) on peanut growth and soil quality in a saline soil. With the combined application of RP and PSB, plant length and biomass (roots and shoots) and uptake of phosphorus (P), nitrogen (N), and potassium (K) increased significantly. Soil Na+ and Cl- contents decreased in the PR alone or PR combined with PSB treatment groups. There were strongly synergistic effects of RP and PSB on soil quality, including a decrease in pH. The soil available N, P, and K contents were significantly affected by the PSB treatments. In addition, the alkaline phosphomonoesterases, urease, and dehydrogenase activities increased significantly compared with the untreated group; highest alkaline phosphomonoesterases activity was observed in the RP and PSB treatment groups. The composition of rhizosphere soil bacterial communities was determined using 454-pyrosequencing of the 16S rRNA gene. In the PR alone or PR combined with PSB treatment groups, the structure of the soil bacterial community improved with increasing richness and diversity. With PSB inoculation, the relative abundance of Acidobacteria, Chloroflexi, and Planctomycetes increased. The three phyla were also positively correlated with soil available N and root dry weight. These results suggested microbiological mechanisms by which the combined use of RP and PSB improved saline soil and promoted plant growth. Overall, the study indicates the combined use of RP and PSB can be an economical and sustainable strategy to increase plant growth in P-deficient and salt-affected soils.
Collapse
Affiliation(s)
- Huanhuan Jiang
- College of Life Sciences, Zhaoqing University, Zhaoqing, China
- Shandong Peanut Research Institute, Qingdao, China
| | - Sainan Li
- College of Life Sciences, Zhaoqing University, Zhaoqing, China
| | - Tong Wang
- Shandong Peanut Research Institute, Qingdao, China
| | - Xiaoyuan Chi
- Shandong Peanut Research Institute, Qingdao, China
| | - Peishi Qi
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, China
| | - Gang Chen
- College of Life Sciences, Zhaoqing University, Zhaoqing, China
| |
Collapse
|
17
|
Li JT, Lu JL, Wang HY, Fang Z, Wang XJ, Feng SW, Wang Z, Yuan T, Zhang SC, Ou SN, Yang XD, Wu ZH, Du XD, Tang LY, Liao B, Shu WS, Jia P, Liang JL. A comprehensive synthesis unveils the mysteries of phosphate-solubilizing microbes. Biol Rev Camb Philos Soc 2021; 96:2771-2793. [PMID: 34288351 PMCID: PMC9291587 DOI: 10.1111/brv.12779] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 06/30/2021] [Accepted: 07/02/2021] [Indexed: 12/22/2022]
Abstract
Phosphate-solubilizing microbes (PSMs) drive the biogeochemical cycling of phosphorus (P) and hold promise for sustainable agriculture. However, their global distribution, overall diversity and application potential remain unknown. Here, we present the first synthesis of their biogeography, diversity and utility, employing data from 399 papers published between 1981 and 2017, the results of a nationwide field survey in China consisting of 367 soil samples, and a genetic analysis of 12986 genome-sequenced prokaryotic strains. We show that at continental to global scales, the population density of PSMs in environmental samples is correlated with total P rather than pH. Remarkably, positive relationships exist between the population density of soil PSMs and available P, nitrate-nitrogen and dissolved organic carbon in soil, reflecting functional couplings between PSMs and microbes driving biogeochemical cycles of nitrogen and carbon. More than 2704 strains affiliated with at least nine archaeal, 88 fungal and 336 bacterial species were reported as PSMs. Only 2.59% of these strains have been tested for their efficiencies in improving crop growth or yield under field conditions, providing evidence that PSMs are more likely to exert positive effects on wheat growing in alkaline P-deficient soils. Our systematic genetic analysis reveals five promising PSM genera deserving much more attention.
Collapse
Affiliation(s)
- Jin-Tian Li
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China.,School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Jing-Li Lu
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Hong-Yu Wang
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Zhou Fang
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Xiao-Juan Wang
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Shi-Wei Feng
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Zhang Wang
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Ting Yuan
- School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Sheng-Chang Zhang
- School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Shu-Ning Ou
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Xiao-Dan Yang
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Zhuo-Hui Wu
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Xiang-Deng Du
- School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Ling-Yun Tang
- School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Bin Liao
- School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Wen-Sheng Shu
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China.,Guangdong Provincial Key Laboratory of Chemical Pollution, South China Normal University, Guangzhou, 510006, PR China
| | - Pu Jia
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| | - Jie-Liang Liang
- Institute of Ecological Science, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China
| |
Collapse
|
18
|
Prospecting catabolic diversity of microbial strains for developing microbial consortia and their synergistic effect on Lentil (Lens esculenta) growth, yield and iron biofortification. Arch Microbiol 2021; 203:4913-4928. [PMID: 34251477 DOI: 10.1007/s00203-021-02446-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 06/14/2021] [Accepted: 06/15/2021] [Indexed: 10/20/2022]
Abstract
Carbon profiling of heterotrophic microbial inoculants is worthwhile strategy for formulating consortium-based biofertilizers. Consortium-based biofertilizers are better than single strain-based biofertilizers for sustaining agricultural productivity and enhancing micronutrient concentration in grains. Currently, we investigated catabolic diversity among microbes using different carbon sources and certain enzyme activities. A field experiment was also carried to evaluate the synergistic effect of selected lentil Rhizobia and plant growth promoting rhizobacteria strains on lentil growth, yield, nitrogen fixation, and Fe-content in seeds. On the basis of carbon profiling Bacillus sp. RB1 and Pseudomonas sp. RP1 were selected for synergistic study with lentil Rhizobium-Rhizobium leguminosarum subsp. viciae RR1. Co-inoculation of Rhizobium with Bacillus sp. RB1 and Pseudomonas sp. RP1 significantly enhanced the plant height, number of pods per plant, seed yield, number of nodules per plant, nitrogenase activity and Fe biofortification in seed over the single Rhizobium inoculation or dual combination of Rhizobium + RB1 or RP1.The response of single Rhizobium inoculation or co-inoculation of Rhizobium with RB1 and/or RP1 at 50% RDF was almost similar or higher than full dose of recommended N:P:K with respect to lentil yield and Fe biofortification in seed. This deciphered grouping of microbial strains for formulation of microbial consortia-based biofertilizers and revealed the promise of consortium of Rhizobium and plant growth promoting rhizobacteria in improving the biological yield and enhancing the Fe content of lentil seed.
Collapse
|
19
|
Shah A, Nazari M, Antar M, Msimbira LA, Naamala J, Lyu D, Rabileh M, Zajonc J, Smith DL. PGPR in Agriculture: A Sustainable Approach to Increasing Climate Change Resilience. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2021. [DOI: 10.3389/fsufs.2021.667546] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Growing environmental concerns are potentially narrowing global yield capacity of agricultural systems. Climate change is the most significant problem the world is currently facing. To meet global food demand, food production must be doubled by 2050; over exploitation of arable lands using unsustainable techniques might resolve food demand issues, but they have negative environmental effects. Current crop production systems are a major reason for changing global climate through diminishing biodiversity, physical and chemical soil degradation, and water pollution. The over application of fertilizers and pesticides contribute to climate change through greenhouse gas emissions (GHG) and toxic soil depositions. At this crucial time, there is a pressing need to transition to more sustainable crop production practices, ones that concentrate more on promoting sustainable mechanisms, which enable crops to grow well in resource limited and environmentally challenging environments, and also develop crops with greater resource use efficiency that have optimum sustainable yields across a wider array of environmental conditions. The phytomicrobiome is considered as one of the best strategies; a better alternative for sustainable agriculture, and a viable solution to meet the twin challenges of global food security and environmental stability. Use of the phytomicrobiome, due to its sustainable and environmentally friendly mechanisms of plant growth promotion, is becoming more widespread in the agricultural industry. Therefore, in this review, we emphasize the contribution of beneficial phytomicrobiome members, particularly plant growth promoting rhizobacteria (PGPR), as a strategy to sustainable improvement of plant growth and production in the face of climate change. Also, the roles of soil dwelling microbes in stress amelioration, nutrient supply (nitrogen fixation, phosphorus solubilization), and phytohormone production along with the factors that could potentially affect their efficiency have been discussed extensively. Lastly, limitations to expansion and use of biobased techniques, for instance, the perspective of crop producers, indigenous microbial competition and regulatory approval are discussed. This review largely focusses on the importance and need of sustainable and environmentally friendly approaches such as biobased/PGPR-based techniques in our agricultural systems, especially in the context of current climate change conditions, which are almost certain to worsen in near future.
Collapse
|
20
|
Etesami H, Jeong BR, Glick BR. Contribution of Arbuscular Mycorrhizal Fungi, Phosphate-Solubilizing Bacteria, and Silicon to P Uptake by Plant. FRONTIERS IN PLANT SCIENCE 2021; 12:699618. [PMID: 34276750 PMCID: PMC8280758 DOI: 10.3389/fpls.2021.699618] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 06/10/2021] [Indexed: 05/22/2023]
Abstract
Phosphorus (P) availability is usually low in soils around the globe. Most soils have a deficiency of available P; if they are not fertilized, they will not be able to satisfy the P requirement of plants. P fertilization is generally recommended to manage soil P deficiency; however, the low efficacy of P fertilizers in acidic and in calcareous soils restricts P availability. Moreover, the overuse of P fertilizers is a cause of significant environmental concerns. However, the use of arbuscular mycorrhizal fungi (AMF), phosphate-solubilizing bacteria (PSB), and the addition of silicon (Si) are effective and economical ways to improve the availability and efficacy of P. In this review the contributions of Si, PSB, and AMF in improving the P availability is discussed. Based on what is known about them, the combined strategy of using Si along with AMF and PSB may be highly useful in improving the P availability and as a result, its uptake by plants compared to using either of them alone. A better understanding how the two microorganism groups and Si interact is crucial to preserving soil fertility and improving the economic and environmental sustainability of crop production in P deficient soils. This review summarizes and discusses the current knowledge concerning the interactions among AMF, PSB, and Si in enhancing P availability and its uptake by plants in sustainable agriculture.
Collapse
Affiliation(s)
- Hassan Etesami
- Department of Soil Science, University of Tehran, Tehran, Iran
| | - Byoung Ryong Jeong
- Department of Horticulture, Division of Applied Life Science (BK21+ Program), Graduate School, Gyeongsang National University, Jinju, South Korea
| | - Bernard R. Glick
- Department of Biology, University of Waterloo, Waterloo, ON, Canada
| |
Collapse
|
21
|
Vassileva M, Malusà E, Sas-Paszt L, Trzcinski P, Galvez A, Flor-Peregrin E, Shilev S, Canfora L, Mocali S, Vassilev N. Fermentation Strategies to Improve Soil Bio-Inoculant Production and Quality. Microorganisms 2021; 9:1254. [PMID: 34207668 PMCID: PMC8229917 DOI: 10.3390/microorganisms9061254] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 05/21/2021] [Accepted: 06/07/2021] [Indexed: 12/04/2022] Open
Abstract
The application of plant beneficial microorganisms has been widely accepted as an efficient alternative to chemical fertilizers and pesticides. Isolation and selection of efficient microorganisms, their characterization and testing in soil-plant systems are well studied. However, the production stage and formulation of the final products are not in the focus of the research, which affects the achievement of stable and consistent results in the field. Recent analysis of the field of plant beneficial microorganisms suggests a more integrated view on soil inoculants with a special emphasis on the inoculant production process, including fermentation, formulation, processes, and additives. This mini-review describes the different groups of fermentation processes and their characteristics, bearing in mind different factors, both nutritional and operational, which affect the biomass/spores yield and microbial metabolite activity. The characteristics of the final products of fermentation process optimization strategies determine further steps of development of the microbial inoculants. Submerged liquid and solid-state fermentation processes, fed-batch operations, immobilized cell systems, and production of arbuscular mycorrhiza are presented and their advantages and disadvantages are discussed. Recommendations for further development of the fermentation strategies for biofertilizer production are also considered.
Collapse
Affiliation(s)
- Maria Vassileva
- Department of Chemical Engineering, University of Granada, C/Fuentenueva s/n, 18071 Granada, Spain; (M.V.); (A.G.); (E.F.-P.)
| | - Eligio Malusà
- The National Institute of Horticultural Research, 96-100 Skierniewice, Poland; (E.M.); (L.S.-P.); (P.T.)
| | - Lidia Sas-Paszt
- The National Institute of Horticultural Research, 96-100 Skierniewice, Poland; (E.M.); (L.S.-P.); (P.T.)
| | - Pawel Trzcinski
- The National Institute of Horticultural Research, 96-100 Skierniewice, Poland; (E.M.); (L.S.-P.); (P.T.)
| | - Antonia Galvez
- Department of Chemical Engineering, University of Granada, C/Fuentenueva s/n, 18071 Granada, Spain; (M.V.); (A.G.); (E.F.-P.)
| | - Elena Flor-Peregrin
- Department of Chemical Engineering, University of Granada, C/Fuentenueva s/n, 18071 Granada, Spain; (M.V.); (A.G.); (E.F.-P.)
| | - Stefan Shilev
- Department of Microbiology and Environmental Biotechnology, University of Agriculture-Plovdiv, 4000 Plovdiv, Bulgaria;
| | - Loredana Canfora
- Research Centre for Agriculture and Environment, Council for Agricultural Research and Economics, 00184 Roma, Italy; (L.C.); (S.M.)
| | - Stefano Mocali
- Research Centre for Agriculture and Environment, Council for Agricultural Research and Economics, 00184 Roma, Italy; (L.C.); (S.M.)
| | - Nikolay Vassilev
- Department of Chemical Engineering, University of Granada, C/Fuentenueva s/n, 18071 Granada, Spain; (M.V.); (A.G.); (E.F.-P.)
- Institute of Biotechnology, University of Granada, 18071 Granada, Spain
| |
Collapse
|
22
|
A Molecule of the Viridomycin Family Originating from a Streptomyces griseus-Related Strain Has the Ability to Solubilize Rock Phosphate and to Inhibit Microbial Growth. Antibiotics (Basel) 2021; 10:antibiotics10010072. [PMID: 33466607 PMCID: PMC7828735 DOI: 10.3390/antibiotics10010072] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/10/2021] [Accepted: 01/12/2021] [Indexed: 11/17/2022] Open
Abstract
Some soil-borne microorganisms are known to have the ability to solubilize insoluble rock phosphate and this process often involves the excretion of organic acids. In this issue, we describe the characterization of a novel solubilizing mechanism used by a Streptomyces strain related to Streptomyces griseus isolated from Moroccan phosphate mines. This process involves the excretion of a compound belonging to the viridomycin family that was shown to play a major role in the rock phosphate bio weathering process. We propose that the chelation of the positively charged counter ions of phosphate constitutive of rock phosphate by this molecule leads to the destabilization of the structure of rock phosphate. This would result in the solubilization of the negatively charged phosphates, making them available for plant nutrition. Furthermore, this compound was shown to inhibit growth of fungi and Gram positive bacteria, and this antibiotic activity might be due to its strong ability to chelate iron, a metallic ion indispensable for microbial growth. Considering its interesting properties, this metabolite or strains producing it could contribute to the development of sustainable agriculture acting as a novel type of slow release bio-phosphate fertilizer that has also the interesting ability to limit the growth of some common plant pathogens.
Collapse
|
23
|
Chiariotti A, Edwards JE, Hermes GDA, Catillo G, Meo Zilio D, Di Giovanni S, Smidt H, Buttazzoni L. Increasing the Sustainability of Maize Grain Production by Using Arbuscular Mycorrhizal Fungi Does Not Affect the Rumen of Dairy Cattle ( Bos taurus) and Buffalo ( Bubalus bubalis). Front Vet Sci 2020; 7:556764. [PMID: 33195529 PMCID: PMC7593576 DOI: 10.3389/fvets.2020.556764] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 08/31/2020] [Indexed: 11/29/2022] Open
Abstract
New approaches are needed to improve the sustainability of feed production and utilization by ruminants. Promising approaches include increased use of buffaloes for more sustainable milk production, and arbuscular mycorrhizal fungi (AMF) to reduce crop production input needs. However, studies assessing the effect of crops grown in the presence of AMF on rumen microbial utilization are limited. Based on current knowledge, we hypothesized that maize grain grown on AMF-inoculated soil affected ruminal fermentation and microbiota, and that this effect differed between buffalo and cattle. A dietary cross-over study (four weeks per diet) was conducted using rumen-cannulated cattle (n = 5) and buffalo (n = 6) to assess the effect of maize grain (3.9% (w/v) of diet) grown on soil with or without AMF (15 kg/ha) on ruminal fermentation and microbiota. Production of maize on AMF-treated soil did not affect any of the assessed ruminal fermentation parameters, microbial concentrations, or prokaryotic community composition (using prokaryotic 16S rRNA gene sequence analysis). In contrast, host type had numerous effects. Protozoal counts, lactate, total VFA and isobutyrate, were significantly higher in buffaloes compared to cattle. Conversely, butyrate was significantly lower in buffaloes than in cattle. Host type explained 9.3% of the total variation in prokaryotic community composition, and relative abundance of nine amplicon sequence variants significantly differed between host types. These findings indicate that AMF treatment of maize crops has no detrimental impact on the value of the resulting maize grains as a ruminant feed, and provides additional insight into rumen-based differences between cattle and buffalo.
Collapse
Affiliation(s)
- Antonella Chiariotti
- Council for Agricultural Research and Economics (CREA), Research Center for Animal Production and Aquaculture, Monterotondo, Italy
| | - Joan E Edwards
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, Netherlands
| | - Gerben D A Hermes
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, Netherlands
| | - Gennaro Catillo
- Council for Agricultural Research and Economics (CREA), Research Center for Animal Production and Aquaculture, Monterotondo, Italy
| | - David Meo Zilio
- Council for Agricultural Research and Economics (CREA), Research Center for Animal Production and Aquaculture, Monterotondo, Italy
| | - Sabrina Di Giovanni
- Council for Agricultural Research and Economics (CREA), Research Center for Animal Production and Aquaculture, Monterotondo, Italy
| | - Hauke Smidt
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, Netherlands
| | - Luca Buttazzoni
- Council for Agricultural Research and Economics (CREA), Research Center for Animal Production and Aquaculture, Monterotondo, Italy
| |
Collapse
|
24
|
Yaashikaa P, Kumar PS, Varjani S, Tamilselvi S, Saravanan A. Formulation and combinatorial effect of Pseudomonas fluorescens and Bacillus coagulans as biocontrol agents. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
25
|
Intracellular Metabolomics Switching Alters Extracellular Acid Production and Insoluble Phosphate Solubilization Behavior in Penicillium oxalicum. Metabolites 2020; 10:metabo10110441. [PMID: 33142690 PMCID: PMC7692655 DOI: 10.3390/metabo10110441] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 10/27/2020] [Accepted: 10/29/2020] [Indexed: 12/13/2022] Open
Abstract
This research aims to understand the precise intracellular metabolic processes of how microbes solubilize insoluble phosphorus (Insol-P) to increase bio-available P. Newly isolated Penicillium oxalicum PSF-4 exhibited outstanding tricalcium phosphate (TP) and iron phosphate (IP) solubilization performance—as manifested by microbial growth and the secretion of low-molecular-weight organic acids (LMWOAs). Untargeted metabolomics approach was employed to assess the metabolic alterations of 73 intracellular metabolites induced by TP and IP compared with soluble KH2PO4 in P. oxalicum. Based on the changes of intracellular metabolites, it was concluded that (i) the enhanced intracellular glyoxylate and carbohydrate metabolisms increased the extracellular LMWOAs production; (ii) the exposure of Insol-P poses potential effects to P. oxalicum in destructing essential cellular functions, affecting microbial growth, and disrupting amino acid, lipid, and nucleotide metabolisms; and (iii) the intracellular amino acid utilization played a significant role to stimulate microbial growth and the extracellular LMWOAs biosynthesis.
Collapse
|
26
|
Chen Y, Liu T, Li Q, Ma Y, Cheng J, Xu L. Screening for Candidate Genes Associated with Biocontrol Mechanisms of Bacillus pumilus DX01 Using Tn5 Transposon Mutagenesis and a 2-DE-Based Comparative Proteomic Analysis. Curr Microbiol 2020; 77:3397-3408. [PMID: 32915287 DOI: 10.1007/s00284-020-02191-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 08/28/2020] [Indexed: 12/27/2022]
Abstract
A total of 1467 mutants of the biocontrol bacterium Bacillus pumilus DX01 were obtained by Tn5 insertional mutagenesis and subjected to the determination of antagonistic capabilities. Compared with the wild-type strain DX01, the mutant M25 was identified to have the most significant reduction in antagonistic capability against the phytopathogen Bipolaris maydis and extracellular proteinase activity. The integration site of the exogenous T-DNA in the genome of mutant M25 was revealed in the coding region of malony CoA-ACP transacylase (MCAT) gene (mcat), which belongs to a polyketide synthase (PKS) gene cluster, DX01pks of B. pumilus DX01. Furthermore, the whole DX01pks gene cluster was cloned using Illumina Solexa sequencing technology, and it has a modular framework different from the other two gene clusters involved in polyketide synthesis in B. amyloliquefaciens FZB42 (pks1) and B. subtilis 168 (pksX). Finally, in order to gain more insights into the molecular mechanisms of biocontrol of B. pumilus DX01, the changes in the relative level of expression of total proteins between the original strain DX01 and the mutant M25 were detected by 2-DE-based proteomic analysis. A total of twenty differentially expressed proteins were identified upon the mcat gene transposition mutagenesis. Of these proteins, seven proteins were up-regulated in expression level and the other proteins were down-regulated. Taken together, the results in this study showed that Tn5 transposon mutagenesis of B. pumilus DX01 can lead to a significant change of antiphytopathogen ability, and the DX01pks gene cluster possibly play a potential role in the biocontrol processes of this bacterium.
Collapse
Affiliation(s)
- Yunpeng Chen
- Department of Resources and Environment, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China.
| | - Tong Liu
- Department of Resources and Environment, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Qiongjie Li
- Department of Resources and Environment, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yifei Ma
- Department of Resources and Environment, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jiejie Cheng
- Department of Resources and Environment, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Lurong Xu
- Department of Resources and Environment, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| |
Collapse
|
27
|
Kowalska J, Tyburski J, Matysiak K, Tylkowski B, Malusá E. Field Exploitation of Multiple Functions of Beneficial Microorganisms for Plant Nutrition and Protection: Real Possibility or Just a Hope? Front Microbiol 2020; 11:1904. [PMID: 32849475 PMCID: PMC7419637 DOI: 10.3389/fmicb.2020.01904] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 07/20/2020] [Indexed: 02/01/2023] Open
Abstract
Bioproducts, i.e., microbial based pesticides or fertilizers (biopesticides and biofertilizers), should be expected to play an ever-increasing role and application in agricultural practices world-wide in the effort to implement policies concerned with sustainable agriculture. However, several microbial strains have proven the capacity to augment plant productivity by enhancing crop nutrition and functioning as biopesticides, or vice-versa. This multifunctionality is an issue that is still not included as a concept and possibility in any legal provision regarding the placing on the market of bioproducts, and indicates difficulties in clearly classifying the purpose of their suitability. In this review, we overview the current understanding of the mechanisms in plant-microbe interactions underlining the dual function of microbial strains toward plant nutrition and protection. The prospects of market development for multifunctional bioproducts are then considered in view of the current regulatory approach in the European Union, in an effort that wants to stimulate a wider adoption of the new knowledge on the role played by microorganisms in crop production.
Collapse
Affiliation(s)
| | - Józef Tyburski
- Department of Agroecosystems, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | | | | | - Eligio Malusá
- Research Institute of Horticulture, Skierniewice, Poland
| |
Collapse
|
28
|
Azaroual SE, Hazzoumi Z, Mernissi NE, Aasfar A, Meftah Kadmiri I, Bouizgarne B. Role of Inorganic Phosphate Solubilizing Bacilli Isolated from Moroccan Phosphate Rock Mine and Rhizosphere Soils in Wheat (Triticum aestivum L) Phosphorus Uptake. Curr Microbiol 2020; 77:2391-2404. [PMID: 32468184 DOI: 10.1007/s00284-020-02046-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 05/20/2020] [Indexed: 01/19/2023]
Abstract
This work aimed to assess the ability of plant growth-promoting Bacilli isolated from wheat rhizosphere and rock phosphate mine soils to convert inorganic phosphate (Pi) from Moroccan natural phosphate (NP) to soluble forms. The effect of these bacteria on wheat plants in order to increase their phosphorus (P) uptake in vitro was also investigated. Bacteria were isolated from wheat rhizosphere and natural rock phosphate soils and screened for their ability to solubilize Tri-Calcium Phosphate (TCP) and Natural Rock Phosphate (NP), to produce indole-3-acetic acid (IAA), siderophores and 1-aminocyclopropane-1-carboxylate (ACC) deaminase. Isolates were identified by 16S rRNA sequencing and tested for their capacity to increase wheat plants growth and their phosphorus uptake.Twenty-four strains belonging to Bacillus genus isolated from both biotopes were screened for their ability to solubilize Pi. The highest NP solubilization was showed by strains isolated from wheat rhizosphere. Solubilization of Pi was accompanied by organic acid production. Strains produce IAA, siderophore and ACC deaminase. Inoculation assays using efficient NP-solubilizing bacilli strains from both sources showed the ability of these isolates to increase wheat growth and the phosphorus uptake under in vitro conditions. Bacilli strains isolated from rhizosphere soil and natural rock phosphorus soil showed effective solubilization of Pi from rock phosphate. Phosphate solubilizing Bacilli were evaluated for their plant growth promotion under in vitro conditions. Results revealed the positive effect of all strains on biometric parameters and P content of wheat seedlings.
Collapse
Affiliation(s)
- Salah Eddine Azaroual
- Team: Microbial Biotechnology, Laboratory : Plant Biotechnology, Faculty of Sciences, Ibn Zohr University, Cité Dakhla, BP 8106, Agadir, Morocco.,Green Biotechnology Laboratory, Moroccan Foundation For Advanced Science Innovation and Research- Rue Mohammed Al Jazouli, Madinat Al Irfan, Rabat, Morocco
| | - Zakaria Hazzoumi
- Green Biotechnology Laboratory, Moroccan Foundation For Advanced Science Innovation and Research- Rue Mohammed Al Jazouli, Madinat Al Irfan, Rabat, Morocco
| | - Najib El Mernissi
- Green Biotechnology Laboratory, Moroccan Foundation For Advanced Science Innovation and Research- Rue Mohammed Al Jazouli, Madinat Al Irfan, Rabat, Morocco
| | - Abderrahim Aasfar
- Green Biotechnology Laboratory, Moroccan Foundation For Advanced Science Innovation and Research- Rue Mohammed Al Jazouli, Madinat Al Irfan, Rabat, Morocco
| | - Issam Meftah Kadmiri
- Green Biotechnology Laboratory, Moroccan Foundation For Advanced Science Innovation and Research- Rue Mohammed Al Jazouli, Madinat Al Irfan, Rabat, Morocco.
| | - Brahim Bouizgarne
- Team: Microbial Biotechnology, Laboratory : Plant Biotechnology, Faculty of Sciences, Ibn Zohr University, Cité Dakhla, BP 8106, Agadir, Morocco.
| |
Collapse
|
29
|
Fuentes A, Herrera H, Charles TC, Arriagada C. Fungal and Bacterial Microbiome Associated with the Rhizosphere of Native Plants from the Atacama Desert. Microorganisms 2020; 8:microorganisms8020209. [PMID: 32033093 PMCID: PMC7074712 DOI: 10.3390/microorganisms8020209] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/19/2020] [Accepted: 01/30/2020] [Indexed: 11/16/2022] Open
Abstract
The rhizosphere microbiome is key in survival, development, and stress tolerance in plants. Salinity, drought, and extreme temperatures are frequent events in the Atacama Desert, considered the driest in the world. However, little information of the rhizosphere microbiome and its possible contribution to the adaptation and tolerance of plants that inhabit the desert is available. We used a high-throughput Illumina MiSeq sequencing approach to explore the composition, diversity, and functions of fungal and bacterial communities of the rhizosphere of Baccharis scandens and Solanum chilense native plants from the Atacama Desert. Our results showed that the fungal phyla Ascomycota and Basidiomycota and the bacterial phyla Actinobacteria and Proteobacteria were the dominant taxa in the rhizosphere of both plants. The linear discriminant analysis (LDA) effect size (LefSe) of the rhizosphere communities associated with B. scandens showed the genera Penicillium and Arthrobacter were the preferential taxa, whereas the genera Oidiodendron and Nitrospirae was the preferential taxa in S. chilense. Both plant showed similar diversity, richness, and abundance according to Shannon index, observed OTUs, and evenness. Our results indicate that there are no significant differences (p = 0.1) between the fungal and bacterial communities of both plants, however through LefSe, we find taxa associated with each plant species and the PCoA shows a separation between the samples of each species. This study provides knowledge to relate the assembly of the microbiome to the adaptability to drought stress in desert plants.
Collapse
Affiliation(s)
- Alejandra Fuentes
- Laboratorio Biorremediación, Departamento de Ciencias Forestales, Facultad de Ciencias Agropecuarias y Forestales, Universidad de La Frontera, Francisco Salazar, Temuco 01145, Chile; (A.F.); (H.H.)
| | - Héctor Herrera
- Laboratorio Biorremediación, Departamento de Ciencias Forestales, Facultad de Ciencias Agropecuarias y Forestales, Universidad de La Frontera, Francisco Salazar, Temuco 01145, Chile; (A.F.); (H.H.)
| | - Trevor C. Charles
- Department of Biology, University of Waterloo, University Avenue West, Waterloo, ON N2L 3G1; Canada;
| | - Cesar Arriagada
- Laboratorio Biorremediación, Departamento de Ciencias Forestales, Facultad de Ciencias Agropecuarias y Forestales, Universidad de La Frontera, Francisco Salazar, Temuco 01145, Chile; (A.F.); (H.H.)
- Correspondence: ; Tel.: +56-045-2325662; Fax: +56-045-2341467
| |
Collapse
|
30
|
Etesami H, Adl SM. Plant Growth-Promoting Rhizobacteria (PGPR) and Their Action Mechanisms in Availability of Nutrients to Plants. ENVIRONMENTAL AND MICROBIAL BIOTECHNOLOGY 2020. [DOI: 10.1007/978-981-15-2576-6_9] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
31
|
Della Mónica IF, Godeas AM, Scervino JM. In Vivo Modulation of Arbuscular Mycorrhizal Symbiosis and Soil Quality by Fungal P Solubilizers. MICROBIAL ECOLOGY 2020; 79:21-29. [PMID: 31218384 DOI: 10.1007/s00248-019-01396-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 06/05/2019] [Indexed: 06/09/2023]
Abstract
Phosphorus (P) is an essential nutrient with low bioavailability in soils for plant growth. The use of P solubilization fungi (PSF) has arisen as an eco-friendly strategy to increase this nutrient's bioavailability. The effect of PSF inoculation and its combination with P-transporting organisms (arbuscular mycorrhizal fungi, AMF) on plant growth has been previously studied. However, these studies did not evaluate the combined effect of PSF and AMF inoculation on plant growth, symbiosis, and soil quality. Therefore, the aim of this study is to assess the impact of PSF on the AMF-wheat symbiosis establishment and efficiency, considering the effect on plant growth and soil quality. We performed a greenhouse experiment with wheat under different treatments (+/-AMF: Rhizophagus irregularis; +/-PSF strains: Talaromyces flavus, T. helicus L7B, T. helicus N24, and T. diversus) and measured plant growth, AMF root colonization, symbiotic efficiency, and soil quality indicators. No interaction between PSF and R. irregularis was found in wheat growth, showcasing that their combination is not better than single inoculation. T. helicus strains did not interfere with the AMF-wheat symbiosis establishment, while T. diversus and T. flavus decreased it. The symbiotic efficiency was increased by T. flavus and T. helicus N24, and unchanged with T. helicus L7B and T. diversus inoculation. The soil quality indicators were higher with microbial co-inoculation, particularly the alkaline phosphatases parameter, showing the beneficial role of fungi in soil. This work highlights the importance of microbial interactions in the rhizosphere for crop sustainability and soil quality improvement, assessing the effects of PSF on AMF-wheat symbiosis.
Collapse
Affiliation(s)
- Ivana F Della Mónica
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA) UBA-CONICET, Pabellón II, 4P Ciudad Universitaria, Intendente Güiraldes 2160, 1428, Buenos Aires, Argentina.
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Instituto de Micología y Botánica (INMIBO) UBA-CONICET, Pabellón II, 4P Ciudad Universitaria, Intendente Güiraldes 2160, 1428, Buenos Aires, Argentina.
| | - Alicia M Godeas
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA) UBA-CONICET, Pabellón II, 4P Ciudad Universitaria, Intendente Güiraldes 2160, 1428, Buenos Aires, Argentina
| | - José M Scervino
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA) UBA-CONICET, Pabellón II, 4P Ciudad Universitaria, Intendente Güiraldes 2160, 1428, Buenos Aires, Argentina
- Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA), CONICET-UNCo, Quintral 1250, 8400, San Carlos de Bariloche, Río Negro, Argentina
| |
Collapse
|
32
|
Alijani Z, Amini J, Ashengroph M, Bahramnejad B. Antifungal activity of volatile compounds produced by Staphylococcus sciuri strain MarR44 and its potential for the biocontrol of Colletotrichum nymphaeae, causal agent strawberry anthracnose. Int J Food Microbiol 2019; 307:108276. [DOI: 10.1016/j.ijfoodmicro.2019.108276] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 06/27/2019] [Accepted: 07/27/2019] [Indexed: 10/26/2022]
|
33
|
Mishra P, Dutta S, Haldar M, Dey P, Kumar D, Mukherjee A, Chandrasekaran N. Enhanced mosquitocidal efficacy of colloidal dispersion of pyrethroid nanometric emulsion with benignity towards non-target species. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 176:258-269. [PMID: 30939406 DOI: 10.1016/j.ecoenv.2019.03.096] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 03/16/2019] [Accepted: 03/23/2019] [Indexed: 06/09/2023]
Abstract
The rising threat of vector-borne diseases and environmental pollution has instigated the investigation of nanotechnology-based applications. The current study deals with a nanotechnological application involving the usage of nanometric pesticides such as permethrin nanoemulsion. The mean droplet diameter and zeta potential of the prepared permethrin nanoemulsion were found to be 12.4 ± 1.13 nm and -20.4 ± 0.56 mV, respectively. The temporal stability of permethrin nanoemulsion was found to be 4 days when checked in the external environment. The permethrin nanoemulsion exhibited LC50 values of 0.038 and 0.047 mgL-1 and 0.049 and 0.063 mgL-1 against larval and pupal stages of Culex tritaeniorhynchus and Aedes aegypti, respectively. The results obtained from the larvicidal and pupicidal assay were corroborated with the histopathological and biochemical profiles of hosts upon treatment with nanometric pesticide. Further, the biosafety studies of the nanopesticide were carried out against different non-target species like freshwater algae (Closterium), Cicer arietinum (Chickpea) and Danio rerio (Zebrafish), and the mosquitocidal concentration of nanopesticide was found to be non-toxic. The following study, therefore, describes the mosquitocidal efficacy of nanometric pesticide formulated in a greener approach, which can become a substitute for conventional pesticide application in an eco-benign manner.
Collapse
Affiliation(s)
- Prabhakar Mishra
- Department of Biotechnology, School of Applied Sciences, REVA University, Bengaluru, Karnataka, India
| | - Sneha Dutta
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Manidipa Haldar
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Priyanka Dey
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Drishty Kumar
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Amitava Mukherjee
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | | |
Collapse
|
34
|
Novinscak A, Filion M. Persistence ofPseudomonas fluorescensLBUM677 in the rhizosphere of corn gromwell (Buglossoides arvensis) under field conditions and its impact on seed oil and stearidonic acid bioaccumulation. J Appl Microbiol 2019; 127:208-218. [DOI: 10.1111/jam.14283] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 04/02/2019] [Accepted: 04/12/2019] [Indexed: 12/13/2022]
Affiliation(s)
- A. Novinscak
- Department of Biology Université de Moncton Moncton NB Canada
| | - M. Filion
- Department of Biology Université de Moncton Moncton NB Canada
| |
Collapse
|
35
|
Liu C, Mou L, Yi J, Wang J, Liu A, Yu J. The Eno Gene of Burkholderia cenocepacia Strain 71-2 is Involved in Phosphate Solubilization. Curr Microbiol 2019; 76:495-502. [PMID: 30798378 DOI: 10.1007/s00284-019-01642-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Accepted: 01/29/2019] [Indexed: 12/20/2022]
Abstract
Bacterial strain 71-2 with phosphate-solubilizing activity was isolated from tobacco rhizosphere and classified as Burkholderia cenocepacia based on sequence analyses of 16S rRNA and recA genes. To learn phosphate-solubilizing mechanisms of 71-2, mutants showing reduced solubilizing phosphate activity were obtained using the EZ-Tn5 transposon. Mutant 71-2-MT51 was reduced in the solubilizing phosphate content to 34.36% as compared with the wild-type strain 71-2. The disrupted gene in 71-2-MT51 was cloned and sequenced, and the putative protein from the gene shared 65.26% identity to protein sequences of enolase from Escherichia coli, which suggests the gene encodes an enzyme of enolase. Complementation analyzing showed that Eno was responsible for phosphate solubilizing for B. cenocepacia strain 71-2. To our knowledge, this is the first report of Eno involved in phosphate solubilizing in B. cenocepacia as well as in other bacteria.
Collapse
Affiliation(s)
- Chunju Liu
- Department of Plant Pathology, College of Plant Protection, Shandong Agricultural University, Taian, 271018, China
- Weifang Tobacco Co., Ltd, Weifang, 261205, Shandong, China
| | - Lei Mou
- Department of Plant Pathology, College of Plant Protection, Shandong Agricultural University, Taian, 271018, China
| | - Jingli Yi
- Department of Plant Pathology, College of Plant Protection, Shandong Agricultural University, Taian, 271018, China
| | - Jing Wang
- Department of Plant Pathology, College of Plant Protection, Shandong Agricultural University, Taian, 271018, China
| | - Aixin Liu
- Department of Plant Pathology, College of Plant Protection, Shandong Agricultural University, Taian, 271018, China.
| | - Jinfeng Yu
- Department of Plant Pathology, College of Plant Protection, Shandong Agricultural University, Taian, 271018, China.
| |
Collapse
|
36
|
Koryachenko O, Girsowicz R, Dekel Y, Doniger T, Steinberger Y. Sedimentary Marl mudstone as a substrate in a xeric environment revealed by microbiome analysis. Extremophiles 2019; 23:337-346. [PMID: 30850921 DOI: 10.1007/s00792-019-01087-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 03/04/2019] [Indexed: 11/26/2022]
Abstract
The sedimentary Marl mudstone soil is composed primarily of CaCO3, and is an important pedologic and geomorphologic element known as Marl, extensively dispersed in slopes and ridges in the northern Negev Desert, Israel. The wide Marl soil-layer areas are barren, with well-developed streamsides and no perennial vegetation cover. Soil systems in the Negev Desert have been widely studied, yet very little information was collected on Marl soils, and even less on the microbiome present in the Negev. Thus, an evaluation of the microbial-community inhabitants in a Marl soil layer was conducted in an attempt to distinguish between Marl with surface green mat and bare Marl soil layer. Our objective was to investigate the microbiome and abiotic components of the upper layer (0-5 cm) of Marl and Marl-with-green-mat soil collected in the Negev Desert. Plate-counting enabled the estimation of fungal and bacterial population size, while nested polymerase chain reaction (nPCR) and Ion Torrent sequencing were used to analyze biological diversity. The results indicate significant differences in microbial biomass and microbial-community diversity between Marl and Marl-green mat, despite similar pH levels. Further study is needed to enhance understanding of the activity of the biotic components and their contribution to slope stabilization.
Collapse
Affiliation(s)
- Oksana Koryachenko
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, 5290002, Ramat-Gan, Israel
| | - Ruben Girsowicz
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, 5290002, Ramat-Gan, Israel
| | - Yaron Dekel
- Shamir Research Institute, University of Haifa, P.O. Box 97, 1290000, Kazerin, Israel
| | - Tirza Doniger
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, 5290002, Ramat-Gan, Israel
| | - Yosef Steinberger
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, 5290002, Ramat-Gan, Israel.
| |
Collapse
|
37
|
Solans M, Messuti MI, Reiner G, Boenel M, Vobis G, Wall LG, Scervino JM. Exploring the response of Actinobacteria to the presence of phosphorus salts sources: Metabolic and co-metabolic processes. J Basic Microbiol 2019; 59:487-495. [DOI: 10.1002/jobm.201800508] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 12/21/2018] [Accepted: 01/13/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Mariana Solans
- INIBIOMA, UNComahue; CONICET. Quintral 1250; Bariloche (8400) Argentina
| | - María I. Messuti
- INIBIOMA, UNComahue; CONICET. Quintral 1250; Bariloche (8400) Argentina
| | - Gabriela Reiner
- INIBIOMA, UNComahue; CONICET. Quintral 1250; Bariloche (8400) Argentina
| | - Micaela Boenel
- IPATEC, UNComahue; CONICET. Quintral 1250; Bariloche (8400) Argentina
| | - Gernot Vobis
- INIBIOMA, UNComahue; CONICET. Quintral 1250; Bariloche (8400) Argentina
| | - Luis G. Wall
- UNQuilmes, CONICET. R. Saénz Peña 352; Bernale Argentina
| | - Jose M. Scervino
- INIBIOMA, UNComahue; CONICET. Quintral 1250; Bariloche (8400) Argentina
| |
Collapse
|
38
|
Gao ZH, Ruan SL, Huang YX, Lv YY, Qiu LH. Paraburkholderia phosphatilytica sp. nov., a phosphate-solubilizing bacterium isolated from forest soil. Int J Syst Evol Microbiol 2019; 69:196-202. [DOI: 10.1099/ijsem.0.003129] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Zeng-hong Gao
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Shao-lin Ruan
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Yi-xian Huang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Ying-ying Lv
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Li-hong Qiu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| |
Collapse
|
39
|
Anđelković S, Babić S, Vasić T, Milenković J, Marković J, Prijović M, Lazarević Đ. Examination of soils under grasslands in the territory of Kosjeric municipality. ZEMLJISTE I BILJKA 2019. [DOI: 10.5937/zembilj1901071a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
|
40
|
Chakdar H, Dastager SG, Khire JM, Rane D, Dharne MS. Characterization of mineral phosphate solubilizing and plant growth promoting bacteria from termite soil of arid region. 3 Biotech 2018; 8:463. [PMID: 30402365 PMCID: PMC6204427 DOI: 10.1007/s13205-018-1488-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 10/21/2018] [Indexed: 12/16/2022] Open
Abstract
Five highly efficient phosphate solubilizing bacteria, viz., Pantoea sp. A3, Pantoea sp. A34, Kosakonia sp. A37, Kosakonia sp. B7 and Bacillus sp. AH9 were isolated from termitorial soils of Sanjivani island of southern Maharashtra, India. These isolates were characterized and explored for phosphate solubilization and plant growth promotion. Among these, Bacillus sp. AH9 showed highest phosphate solubilization index (3.5) and solubilization efficiency (250%) on Pikovskaya agar. Interestingly, Pantoea sp. A34 displayed maximum mineral phosphate solubilization (1072.35 mg/L) in liquid medium and during this period the pH dropped to 3.13. All five isolates had highest P solubilization at 48 h after inoculation. During mineral phosphate solubilization, both gluconic acid and 2-keto gluconic acid were produced by Kosakonia and Bacillus isolates, while only 2-keto gluconic acid was detected in Pantoea isolates. Highest organic acid (39.07 ± 0.04 g/L) production was envisaged in Bacillus sp. AH9, while Pantoea sp. A34 produced the least amount (13.00 ± 0.01 g/L) of organic acid. Seed bacterization with Pantoea sp. A3 and Kosakonia sp. A37 resulted in ~ 37% and ~ 53% increase in root length of tomato seedlings, respectively, while Pantoea sp. A34 and Kosakonia sp. B7 had deleterious effects on root length as well as overall growth of the seedlings. To our knowledge, this is the first report of plant growth promoting potential of microorganisms isolated from termitorial soil of Sanjivani island, which is a drought-prone area. Therefore, such efficient growth promoting P solubilizers can offer an effective solution for sustainable agriculture in arid, dryland farming and drought-prone regions.
Collapse
Affiliation(s)
- Hillol Chakdar
- ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Mau, Uttar Pradesh 275103 India
| | - Syed G. Dastager
- CSIR-National Collection of Industrial Microorganisms (NCIM) Resource Centre, National Chemical Laboratory (NCL), Pune, Maharashtra India
| | - Jayant M. Khire
- CSIR-National Collection of Industrial Microorganisms (NCIM) Resource Centre, National Chemical Laboratory (NCL), Pune, Maharashtra India
| | - Digeshwar Rane
- CSIR-National Collection of Industrial Microorganisms (NCIM) Resource Centre, National Chemical Laboratory (NCL), Pune, Maharashtra India
| | - Mahesh S. Dharne
- CSIR-National Collection of Industrial Microorganisms (NCIM) Resource Centre, National Chemical Laboratory (NCL), Pune, Maharashtra India
| |
Collapse
|
41
|
Multifunctional potential of endophytic and rhizospheric microbial isolates associated with Butia purpurascens roots for promoting plant growth. Antonie van Leeuwenhoek 2018; 111:2157-2174. [DOI: 10.1007/s10482-018-1108-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 05/24/2018] [Indexed: 01/29/2023]
|
42
|
Novinscak A, Filion M. Enhancing total lipid and stearidonic acid yields inBuglossoides arvensisthrough PGPR inoculation. J Appl Microbiol 2018; 125:203-215. [DOI: 10.1111/jam.13749] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 02/22/2018] [Accepted: 02/22/2018] [Indexed: 01/08/2023]
Affiliation(s)
- A. Novinscak
- Biology Department; Université de Moncton; Moncton NB Canada
| | - M. Filion
- Biology Department; Université de Moncton; Moncton NB Canada
| |
Collapse
|
43
|
Effects of Azorhizophilus paspali and Paenibacillus mucilaginosus as Biofertilizer and Determination of Nutritional Efficiency by Sensors. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2018. [DOI: 10.1007/s13369-018-3126-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
44
|
Senthil Kumar C, Jacob T, Devasahayam S, Thomas S, Geethu C. Multifarious plant growth promotion by an entomopathogenic fungus Lecanicillium psalliotae. Microbiol Res 2018; 207:153-160. [DOI: 10.1016/j.micres.2017.11.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 10/20/2017] [Accepted: 11/28/2017] [Indexed: 10/18/2022]
|
45
|
Bazghaleh N, Hamel C, Gan Y, Tar'an B, Knight JD. Genotypic variation in the response of chickpea to arbuscular mycorrhizal fungi and non-mycorrhizal fungal endophytes. Can J Microbiol 2018; 64:265-275. [PMID: 29390194 DOI: 10.1139/cjm-2017-0521] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Plant roots host symbiotic arbuscular mycorrhizal (AM) fungi and other fungal endophytes that can impact plant growth and health. The impact of microbial interactions in roots may depend on the genetic properties of the host plant and its interactions with root-associated fungi. We conducted a controlled condition experiment to investigate the effect of several chickpea (Cicer arietinum L.) genotypes on the efficiency of the symbiosis with AM fungi and non-AM fungal endophytes. Whereas the AM symbiosis increased the biomass of most of the chickpea cultivars, inoculation with non-AM fungal endophytes had a neutral effect. The chickpea cultivars responded differently to co-inoculation with AM fungi and non-AM fungal endophytes. Co-inoculation had additive effects on the biomass of some cultivars (CDC Corrine, CDC Anna, and CDC Cory), but non-AM fungal endophytes reduced the positive effect of AM fungi on Amit and CDC Vanguard. This study demonstrated that the response of plant genotypes to an AM symbiosis can be modified by the simultaneous colonization of the roots by non-AM fungal endophytes. Intraspecific variations in the response of chickpea to AM fungi and non-AM fungal endophytes indicate that the selection of suitable genotypes may improve the ability of crop plants to take advantage of soil ecosystem services.
Collapse
Affiliation(s)
- Navid Bazghaleh
- a Swift Current Research and Development Centre, Agriculture and Agri-Food Canada, Swift Current, SK, S9H 3X2 Canada.,b Department of Soil Science, University of Saskatchewan, Saskatoon, SK, S7N 5A8 Canada.,c Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, S7N 5A8 Canada
| | - Chantal Hamel
- b Department of Soil Science, University of Saskatchewan, Saskatoon, SK, S7N 5A8 Canada.,d Quebec Research and Development Centre, Agriculture and Agri-Food Canada, Québec, QC, G1V 2J3 Canada
| | - Yantai Gan
- a Swift Current Research and Development Centre, Agriculture and Agri-Food Canada, Swift Current, SK, S9H 3X2 Canada.,c Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, S7N 5A8 Canada
| | - Bunyamin Tar'an
- c Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, S7N 5A8 Canada
| | - Joan Diane Knight
- b Department of Soil Science, University of Saskatchewan, Saskatoon, SK, S7N 5A8 Canada
| |
Collapse
|
46
|
Matilla MA, Krell T. Plant Growth Promotion and Biocontrol Mediated by Plant-Associated Bacteria. PLANT MICROBIOME: STRESS RESPONSE 2018. [DOI: 10.1007/978-981-10-5514-0_3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
47
|
Ceci A, Pinzari F, Russo F, Maggi O, Persiani AM. Saprotrophic soil fungi to improve phosphorus solubilisation and release: In vitro abilities of several species. AMBIO 2018; 47:30-40. [PMID: 29159452 PMCID: PMC5722741 DOI: 10.1007/s13280-017-0972-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Modern agriculture is dependent on phosphate rock (PR), which is a nonrenewable resource. Improvement of phosphorus (P) availability for crops in agricultural soils represents a key strategy to slow down the depletion of PR. The aim of this study was to identify potential P biofertilisers among saprotrophic fungal species. We tested 30 fungal strains belonging to 28 taxa (4 Zygomycota and 24 Ascomycota) and with different life strategies. The study showed that many saprotrophic fungi have the ability to mobilise P from insoluble forms according to a variety of mechanisms. Our results expand the pool of P solubilising fungal species, also suggesting a new solubilisation index and shedding light on parameters that could be basic in the selection of efficient soil P-biofertilisers fungi. Rhizopus stolonifer var. stolonifer, Aspergillus niger and Alternaria alternata were found to be the best performing strains in terms of amounts of TCP solubilisation.
Collapse
Affiliation(s)
- Andrea Ceci
- Dipartimento di Biologia Ambientale, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Flavia Pinzari
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria. Centro di ricerca Agricoltura e Ambiente (CREA-AA), Via della Navicella 2-4, 00185 Rome, Italy
| | - Fabiana Russo
- Dipartimento di Biologia Ambientale, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Oriana Maggi
- Dipartimento di Biologia Ambientale, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Anna Maria Persiani
- Dipartimento di Biologia Ambientale, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| |
Collapse
|
48
|
Solubilization of Inorganic Rock Phosphate by Rhizobacteria of Allium hookeri Thwaites and Influence of Carbon and Nitrogen Sources Amendments. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2017. [DOI: 10.22207/jpam.11.4.30] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
49
|
Yasmin S, Hafeez FY, Mirza MS, Rasul M, Arshad HMI, Zubair M, Iqbal M. Biocontrol of Bacterial Leaf Blight of Rice and Profiling of Secondary Metabolites Produced by Rhizospheric Pseudomonas aeruginosa BRp3. Front Microbiol 2017; 8:1895. [PMID: 29018437 PMCID: PMC5622989 DOI: 10.3389/fmicb.2017.01895] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 09/15/2017] [Indexed: 01/28/2023] Open
Abstract
Xanthomonas oryzae pv. oryzae (Xoo) is widely prevalent and causes Bacterial Leaf Blight (BLB) in Basmati rice grown in different areas of Pakistan. There is a need to use environmentally safe approaches to overcome the loss of grain yield in rice due to this disease. The present study aimed to develop inocula, based on native antagonistic bacteria for biocontrol of BLB and to increase the yield of Super Basmati rice variety. Out of 512 bacteria isolated from the rice rhizosphere and screened for plant growth promoting determinants, the isolate BRp3 was found to be the best as it solubilized 97 μg/ mL phosphorus, produced 30 μg/mL phytohormone indole acetic acid and 15 mg/ L siderophores in vitro. The isolate BRp3 was found to be a Pseudomonas aeruginosa based on 16S rRNA gene sequencing (accession no. HQ840693). This bacterium showed antagonism in vitro against different phytopathogens including Xoo and Fusarium spp. Strain BRp3 showed consistent pathogen suppression of different strains of BLB pathogen in rice. Mass spectrometric analysis detected the production of siderophores (1-hydroxy-phenazine, pyocyanin, and pyochellin), rhamnolipids and a series of already characterized 4-hydroxy-2-alkylquinolines (HAQs) as well as novel 2,3,4-trihydroxy-2-alkylquinolines and 1,2,3,4-tetrahydroxy-2-alkylquinolines in crude extract of BRp3. These secondary metabolites might be responsible for the profound antibacterial activity of BRp3 against Xoo pathogen. Another contributing factor toward the suppression of the pathogen was the induction of defense related enzymes in the rice plant by the inoculated strain BRp3. When used as an inoculant in a field trial, this strain enhanced the grain and straw yields by 51 and 55%, respectively, over non-inoculated control. Confocal Laser Scanning Microscopy (CLSM) used in combination with immunofluorescence marker confirmed P. aeruginosa BRp3 in the rice rhizosphere under sterilized as well as field conditions. The results provide evidence that novel secondary metabolites produced by BRp3 may contribute to its activity as a biological control agent against Xoo and its potential to promote the growth and yield of Super Basmati rice.
Collapse
Affiliation(s)
- Sumera Yasmin
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan
| | - Fauzia Y Hafeez
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan.,Department of Biosciences, COMSATS Institute of Information Technology, Islamabad, Pakistan
| | - Muhammad S Mirza
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan
| | - Maria Rasul
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan
| | - Hafiz M I Arshad
- Plant Protection Division, Nuclear Institute of Agriculture and Biology, Faisalabad, Pakistan
| | - Muhammad Zubair
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan
| | - Mazhar Iqbal
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan
| |
Collapse
|
50
|
Hipólito-Romero E, Carcaño-Montiel MG, Ramos-Prado JM, Vázquez-Cabañas EA, López-Reyes L, Ricaño-Rodríguez J. [Effect of mixed edaphic bacterial inoculants in the early development of improved cocoa cultivars (Theobroma cacao L.) in a traditional agroforestry system of Oaxaca, Mexico]. Rev Argent Microbiol 2017; 49:356-365. [PMID: 28774480 DOI: 10.1016/j.ram.2017.04.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 02/16/2017] [Accepted: 04/10/2017] [Indexed: 10/19/2022] Open
Abstract
Cocoa plant (Theobroma cacao L.) is native from South America and it represents one of the most significant "bio-cultural" resources of Mesoamerica, since it is a region where it was domesticated and had a relevance as ritual drink and as currency in many pre-hispanic cultures until the arrival of the Spaniards who spread its use worldwide, and became it one of the most consumed commodity goods. Through this research, an alternative is proposed to address the problem of cultivars through the introduction of a wide variety of cocoa plants in traditional agroforestry systems, in synergy with the inoculation of nitrogen-fixing and insoluble phosphor solubilizing edaphic bacterial consortia. Four cultivars of improved grafted cocoa plants were introduced in a traditional agroforestry plot and three fertilization treatments were applied: application of biofertilizer, application of chemical fertilizer and control. Measurements of height, stem diameter, number of leaves and branches were recorded at 2 and 12 months after planting and rhizosphere microbial populations were characterized. Growth results showed good potential for all studied cultivars and it was observed that biofertilization foresees significant effects in some of the growth indicators of cocoa plant. Thereby, plant associations in an agroforestry system could be favorable to promote fruit development and resistance to pests and diseases.
Collapse
Affiliation(s)
- E Hipólito-Romero
- Centro de EcoAlfabetización y Diálogo de Saberes, Universidad Veracruzana, Campus USBI, Col. Emiliano Zapata, Xalapa, Veracruz, México.
| | - M G Carcaño-Montiel
- Laboratorio de Microbiología de Suelos, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Col. San Manuel, Puebla, Puebla, México
| | - J M Ramos-Prado
- Centro de EcoAlfabetización y Diálogo de Saberes, Universidad Veracruzana, Campus USBI, Col. Emiliano Zapata, Xalapa, Veracruz, México
| | - E A Vázquez-Cabañas
- Laboratorio de Microbiología de Suelos, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Col. San Manuel, Puebla, Puebla, México
| | - L López-Reyes
- Laboratorio de Microbiología de Suelos, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Col. San Manuel, Puebla, Puebla, México
| | - J Ricaño-Rodríguez
- Centro de EcoAlfabetización y Diálogo de Saberes, Universidad Veracruzana, Campus USBI, Col. Emiliano Zapata, Xalapa, Veracruz, México
| |
Collapse
|