scholarly journals Application and Mechanisms of Plant Growth Promoting Fungi (PGPF) for Phytostimulation

2020 ◽  
Author(s):  
Md. Motaher Hossain ◽  
Farjana Sultana
Keyword(s):  
Plant Growth ◽  
Sustainable Agriculture ◽  
Crop Production ◽  
Plant Pathogens ◽  
Crop Yields ◽  
Intrinsic Factor ◽  
Beneficial Effects ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Increasing Demand

Plant growth-promoting fungi (PGPF) constitute diverse genera of nonpathogenic fungi that provide a variety of benefits to their host plants. PGPF show an effective role in sustainable agriculture. Meeting increasing demand for crop production without damage to the environment is the biggest challenge nowadays. The use of PGPF has been recognized as an environmentally friendly way of increasing crop production. These fungi have proven to increase crop yields by improving germination, seedling vigor, plant growth, root morphogenesis, photosynthesis, and flowering through either a direct or indirect mechanism. The mechanisms of PGPF involve solubilizing and mineralizing nutrients for easy uptake by plants, regulating hormonal balance, producing volatile organic compounds and microbial enzyme, suppressing plant pathogens and ameliorating abiotic stresses. Successful colonization is an intrinsic factor for most PGPF to exert their beneficial effects on plants. A certain level of specificity exists in the interactions between plant species and PGPF for root colonization and growth promoting effects. There is a gap between the number of reported efficacious PGPF and the number of PGPF as biofertilizer. Efforts should be strengthened to improve the efficacy and commercialization of PGPF. Hence, this chapter summarizes valuable information regarding the application and mechanisms of PGPF in sustainable agriculture.

scholarly journals Importance of plant growth promoting rhizobacteria (PGPR) in agriculture: A Review

2020 ◽  
Vol 35 (1-2) ◽  
Author(s):  
Tabish Akhtar ◽  
Shubham Kumar ◽  
Sukhdeo Kumar ◽  
M. R. Meena
Keyword(s):  
Plant Growth ◽  
Crop Production ◽  
Plant Pathogens ◽  
Crop Yields ◽  
Plant Growth Promoting Rhizobacteria ◽  
Agricultural Industry ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Increasing Demand ◽  
Environmentally Sound

The growth of plants promoting rhizobacteria (PGPR) has gained widespread importance in agriculture. These are beneficial bacteria found in nature that live actively in plant roots and improve plant growth and increase agricultural productivity.. (PGPR) promoting plant growth shows an important role in the sustainable agricultural industry. The increasing demand for crop production is a major challenge nowadays, with a significant lack of use of synthetic chemical fertilizers and pesticides. The use of PGPR has proven to be an environmentally sound way of increasing crop yields by facilitating plant growth through direct or indirect mechanisms. The mechanisms of PGPR include regulating hormonal and nutritional balance, inducing resistance against plant pathogens, and dissolving nutrients for easy uptake by plants. Furthermore, PGPRs show synergistic and antagonistic interactions with microorganisms within the rhizosphere and in bulk soils, which indirectly increases plant growth rates. There are several bacteria species that act as PGPR. This review summarizes the methodology of PGPR as a bio-fertilizer in agriculture.

scholarly journals Impact of Plant Growth Promoting Rhizobacteria in Sustainable Agriculture: An Important Natural Resource for Crop Improvement

2019 ◽  
Vol 5 (03) ◽  
pp. 210-214
Author(s):  
Debnirmalya Gangopadhyay ◽  
Ashmita Ghosh
Keyword(s):  
Plant Growth ◽  
Sustainable Agriculture ◽  
Crop Yields ◽  
Growth Promotion ◽  
Crop Improvement ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Increasing Demand ◽  
Environmentally Sound

It is usually admitted that the chemical fertilizers and pesticides used in modern agriculture create a real environmental and public health problems. The increasing demand for production with a significant reduction of synthetic fertilizers and pesticides use is a big challenge nowadays. The use of plant growth promoting rhizobacteria or PGPR has been proven to be an environmentally sound way of increasing crop yields by facilitating plant growth through either a direct or indirect mechanism. They play an important role to increase in soil fertility, plant growth promotion and suppression of phytopathogens for development of ecofriendly sustainable agriculture. In view of the latest advances in PGPR biotechnology, this paper proposes to do the review on PGPR in rhizosphere and describes the different mechanisms used by PGPR to promote the plants growth and health. In prospect to a healthy and sustainable agriculture, the PGPR approach revealed as one of the best ecofriendly alternatives.

scholarly journals Plant growth promoting rhizobacteria: Beneficial effects for healthy and sustainable agriculture

2016 ◽  
Vol 15 (27) ◽  
pp. 1452-1463 ◽  
Author(s):  
Agossou Noumavo Pac ocirc me ◽  
Adouk egrave Agbodjato Nad egrave ge ◽  
Baba Moussa Farid ◽  
Adjanohoun Adolphe ◽  
Baba Moussa Lamine
Keyword(s):  
Plant Growth ◽  
Sustainable Agriculture ◽  
Plant Growth Promoting Rhizobacteria ◽  
Beneficial Effects ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Identification of Plant Growth Promoting Bacteria Within Space Crop Production Systems

2021 ◽  
Vol 8 ◽  
Author(s):  
David Handy ◽  
Mary E. Hummerick ◽  
Anirudha R. Dixit ◽  
Anna Maria Ruby ◽  
Gioia Massa ◽  
...  
Keyword(s):  
Plant Growth ◽  
Crop Production ◽  
Plant Pathogens ◽  
Life Support ◽  
Production Systems ◽  
Space Station ◽  
Fungal Species ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

As we establish colonies beyond Earth, resupply missions will become increasingly difficult, logistically speaking, and less frequent. As a result, the on-site production of plants will be mission critical for both food production as well as complementing life support systems. Previous research on space crop production aboard the International Space Station (ISS) has determined that the spaceflight environment, though capable of supporting plant growth, is inherently stressful to plants. The combined stressors of this environment limits yield by inhibiting growth, as well as increasing susceptibility to infection by plant pathogens such as Fusarium spp. We propose that a consortium of space-viable, plant growth-promoting bacteria (PGPB) could assist in mitigating challenges to plant growth in a sustainable fashion. Here, we utilize biochemical and phenotypic assessments to identify potential PGPB derived from previously acquired isolates from the VEGGIE crop production system aboard the ISS. These assays confirmed the presence of bacteria capable of producing and/or interfering with plant hormones, facilitating plant uptake of high-value target nutrients for plants such as iron and phosphorus, and able to inhibit the growth of problematic fungal species. We discuss our findings with regards to their potential to support plant growth aboard spaceflight platforms as well as the Moon and Mars.

scholarly journals Plant Growth Promoting Rhizobacterial Biofertilizers for Sustainable Crop Production: The Past, Present, and Future

2020 ◽  
Author(s):  
Becky N. Aloo ◽  
Billy A. Makumba ◽  
Ernest R. Mbega
Keyword(s):  
Plant Growth ◽  
Crop Production ◽  
Crop Yields ◽  
Agricultural Practices ◽  
Plant Growth Promoting Rhizobacteria ◽  
Full Potential ◽  
Sustainable Crop Production ◽  
Indigenous Plant ◽  
Plant Growth Promoting ◽  
Growth Promoting

The world’s population is increasing and so are agricultural activities to match the growing demand for food. Conventional agricultural practices generally employ artificial fertilizers to increase crop yields, but these have multiple environmental and human health effects. For decades, environmentalists and sustainability researchers have focused on alternative crop fertilization mechanisms to address these challenges, and biofertilizers have constantly been researched, recommended, and even successfully-adopted for several crops. Biofertilizers are microbial formulations made of indigenous plant growth-promoting rhizobacteria (PGPR) which can naturally improve plant growth either directly or indirectly, through the production of phytohormones, solubilization of soil nutrients, and production of iron-binding metabolites; siderophores. Biofertilizers, therefore, hold immense potential as tools for sustainable crop production especially in the wake of climate change and global warming. Despite the mounting interest in this technology, their full potential has not yet been realized. This review updates our understanding of the PGPR biofertilizers and sustainable crop production. It evaluates the history of these microbial products, assesses their present state of utilization, and also critically propounds on their future prospects for sustainable crop production. Such information is desirable to fully evaluate their potential and can ultimately pave the way for their increased adoption for crop production.

scholarly journals PLANT GROWTH PROMOTING RHIZOBACTERIA (PGPR) DARI AKAR BAMBU APUS (Gigantochola apus) MENINGKATKAN PERTUMBUHAN TANAMAN

BIOLOVA ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 1-6
Author(s):  
Elza Yulistiana ◽  
Hening Widowati ◽  
Agus Sutanto
Keyword(s):  
Plant Growth ◽  
Fungal Pathogens ◽  
Plant Pathogens ◽  
Crop Yields ◽  
Plant Growth Promoting Rhizobacteria ◽  
Biological Control Agents ◽  
Living Things ◽  
Bacillus Spp ◽  
Plant Growth Promoting ◽  
Growth Promoting

Abstract: Living things need nutrients to grow and their endurance. The presence of nutrients around plant roots is very important for microorganisms as biological control agents and also for plant pathogens. PGPR Plant Growth Promoting Rhizobacteria (PGPR) has a role in increasing plant growth, crop yields and plant growth. Bacteria in PGPR can actively colonize the rhizosphere. Bamboo roots are colonized by many bacteria (Pseudomonas fluorescens), these bacteria can play a role in increasing the solubility of P in the soil, certain strains of Pseudomonas sp. can prevent plants from fungal pathogens that come from the soil. Rhizobacteria from the Bacillus spp. and Pseudomonas spp., able to dissolve phosphate, while the Serratia spp. group, in addition to being able to increase the availability of P (phosphate) can also fix nitrogen and be able to synthesize IAA. Microbes with the ability to produce phytohormone are an effort to help in increasing plant growth.

scholarly journals A window into fungal endophytism in Salicornia europaea: deciphering fungal characteristics as plant growth promoting agents

2019 ◽  
Vol 445 (1-2) ◽  
pp. 577-594 ◽  
Author(s):  
Bliss Ursula Furtado ◽  
Sonia Szymańska ◽  
Katarzyna Hrynkiewicz
Keyword(s):  
Plant Growth ◽  
Endophytic Fungi ◽  
Crop Production ◽  
Plant Pathogens ◽  
Growth Promotion ◽  
Salicornia Europaea ◽  
Dematiaceous Fungi ◽  
Pectolytic Activity ◽  
Plant Growth Promoting ◽  
Growth Promoting

Abstract Aim Plant-endophytic associations exist only when equilibrium is maintained between both partners. This study analyses the properties of endophytic fungi inhabiting a halophyte growing in high soil salinity and tests whether these fungi are beneficial or detrimental when non-host plants are inoculated. Method Fungi were isolated from Salicornia europaea collected from two sites differing in salinization history (anthropogenic and naturally saline) and analyzed for plant growth promoting abilities and non-host plant interactions. Results Most isolated fungi belonged to Ascomycota (96%) including dematiaceous fungi and commonly known plant pathogens and saprobes. The strains were metabolically active for siderophores, polyamines and indole-3-acetic acid (mainly Aureobasidium sp.) with very low activity for phosphatases. Many showed proteolytic, lipolytic, chitinolytic, cellulolytic and amylolytic activities but low pectolytic activity. Different activities between similar fungal species found in both sites were particularly seen for Epiccocum sp., Arthrinium sp. and Trichoderma sp. Inoculating the non-host Lolium perenne with selected fungi increased plant growth, mainly in the symbiont (Epichloë)-free variety. Arthrinium gamsii CR1-9 and Stereum gausapatum ISK3-11 were most effective for plant growth promotion. Conclusions This research suggests that host lifestyle and soil characteristics have a strong effect on endophytic fungi, and environmental stress could disturb the plant-fungi relations. In favourable conditions, these fungi may be effective in facilitating crop production in non-cultivable saline lands.

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