scholarly journals Mycorrhizal-Bacterial Amelioration of Plant Abiotic and Biotic Stress

2021 ◽  
Vol 5 ◽  
Author(s):  
Gustavo Santoyo ◽  
Elisa Gamalero ◽  
Bernard R. Glick
Keyword(s):  
Plant Growth ◽  
Mycorrhizal Fungi ◽  
Synergistic Effects ◽  
Plant Stress ◽  
Plant Growth Promoting Bacteria ◽  
Abiotic And Biotic Stress ◽  
Different Types ◽  
Plant Growth Promoting ◽  
Plant Microbiota ◽  
Growth Promoting

Soil microbiota plays an important role in the sustainable production of the different types of agrosystems. Among the members of the plant microbiota, mycorrhizal fungi (MF) and plant growth-promoting bacteria (PGPB) interact in rhizospheric environments leading to additive and/or synergistic effects on plant growth and heath. In this manuscript, the main mechanisms used by MF and PGPB to facilitate plant growth are reviewed, including the improvement of nutrient uptake, and the reduction of ethylene levels or biocontrol of potential pathogens, under both normal and stressful conditions due to abiotic or biotic factors. Finally, it is necessary to expand both research and field use of bioinoculants based on these components and take advantage of their beneficial interactions with plants to alleviate plant stress and improve plant growth and production to satisfy the demand for food for an ever-increasing human population.

scholarly journals Synergistic and offset effects of fungal species combinations on plant performance

2021 ◽  
Author(s):  
Yoshie Hori ◽  
Hiroaki Fujita ◽  
Kei Hiruma ◽  
Kazuhiko Narisawa ◽  
Hirokazu Toju
Keyword(s):  
Plant Growth ◽  
Synergistic Effects ◽  
Dry Weight ◽  
Fungal Species ◽  
Plant Performance ◽  
Plant Growth Promoting Bacteria ◽  
Microbial Species ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Dual Inoculation

In natural and agricultural ecosystems, survival and growth of plants depend substantially on microbes in the endosphere and rhizosphere. Although numerous studies have reported the presence of plant-growth promoting bacteria and fungi in below-ground biomes, it remains a major challenge to understand how sets of microbial species positively or negatively affect plants' performance. By conducting a series of single- and dual-inoculation experiments of 13 endophytic and soil fungi targeting a Brassicaceae plant species, we here evaluated how microbial effects on plants depend on presence/absence of co-occurring microbes. The comparison of single- and dual-inoculation experiments showed that combinations of the fungal isolates with the highest plant-growth promoting effects in single inoculations did not yield highly positive impacts on plant performance traits (e.g., shoot dry weight). In contrast, pairs of fungi including small/moderate contributions to plants in single-inoculation contexts showed the greatest effects on plants among the 78 fungal pairs examined. These results on the offset and synergistic effects of pairs of microbes suggest that inoculation experiments of single microbial species/isolates can result in the overestimation or underestimation of microbial functions in multi-species contexts. Because keeping single-microbe systems in outdoor conditions is impractical, designing sets of microbes that can maximize performance of crop plants is an important step for the use of microbial functions in sustainable agriculture.

scholarly journals The Plant-Growth-Promoting Fungus, Mortierella elongata: Its Biology, Ecological Distribution, and Growth-Promoting Activities

EDIS ◽  
2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Hui-Ling Liao
Keyword(s):  
Plant Growth ◽  
Plant Growth Promotion ◽  
Mycorrhizal Fungi ◽  
Growth Promotion ◽  
Ecological Distribution ◽  
Different Types ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Mortierella Elongata ◽  
Soil And Water

Recent studies show that Mortierella elongata can perform plant-growth promotion across different types of crops, including bahiagrass, corn, tomato, squash, and watermelon. Compared to the well-known species that have plant-growth-promotion abilities (e.g., mycorrhizal fungi, Trichoderma), growers, agents, and stakeholders are not familiar with "Mortierella" despite the important role these fungal taxa play in promoting the growth of their crops. This new 5-page publication of the UF/IFAS Department of Soil and Water Sciences provides a brief overview of Mortierella from biological, taxonomical, ecological, and functional perspectives to help readers learn the biology and potential modes of action of this fungus. Written by Hui-Ling Liao.https://edis.ifas.ufl.edu/ss679

Beneficial role of plant growth promoting bacteria and arbuscular mycorrhizal fungi on plant responses to heavy metal stress

2009 ◽  
Vol 55 (5) ◽  
pp. 501-514 ◽  
Author(s):  
Elisa Gamalero ◽  
Guido Lingua ◽  
Graziella Berta ◽  
Bernard R. Glick
Keyword(s):  
Heavy Metal ◽  
Plant Growth ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Heavy Metal Stress ◽  
Metal Stress ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

Heavy metal pollution is a major worldwide environmental concern that has recently motivated researchers to develop a variety of novel approaches towards its cleanup. As an alternative to traditional physical and chemical methods of environmental cleanup, scientists have developed phytoremediation approaches that include the use of plants to remove or render harmless a range of compounds. Both plant growth promoting bacteria (PGPB) and arbuscular mycorrhizal fungi (AMF) can be used to facilitate the process of phytoremediation and the growth of plants in metal-contaminated soils. This review focuses on the recent literature dealing with the effects of plant growth-promoting bacteria and AM fungi on the response of plants to heavy metal stress and points the way to strategies that may facilitate the practical realization of this technology.

scholarly journals Vpliv koristnih talnih mikroorganizmov in endofitov na rastlinsko obrambo pred žuželkami

2019 ◽  
Vol 113 (1) ◽  
pp. 187
Author(s):  
Anamarija JAGODIČ ◽  
Matevž LIKAR
Keyword(s):  
Plant Growth ◽  
Natural Enemies ◽  
Biotic Stress ◽  
Mycorrhizal Fungi ◽  
Soil Microorganisms ◽  
Growth Promotion ◽  
Plant Growth Promoting Rhizobacteria ◽  
Abiotic And Biotic Stress ◽  
Plant Growth Promoting ◽  
Growth Promoting

Soil borne microorganisms such as mycorrhizal fungi and plant growth-promoting rhizobacteria help plants to overcome abiotic and biotic stress. Mechanisms used in this situtations are: growth promotion and induced resistance. Beneficial soil microorganisms also interact with foliar insects (herbivores, natural enemies and pollinators). This kind of interactions are getting more and more important in different ecosystems, especially in agriculture. A better knowledege of these systems would certainly help to deepen the understanding of multitrophic interactions.

Phytochemistry of Cymbopogon citratus (D.C.) Stapf inoculated with arbuscular mycorrhizal fungi and plant growth promoting bacteria

2020 ◽  
Vol 149 ◽  
pp. 112340 ◽  
Author(s):  
Rayane Monique Sete da Cruz ◽  
Odair Alberton ◽  
Milena da Silva Lorencete ◽  
Glaucia Leticia Sete da Cruz ◽  
Arquimedes Gasparotto-Junior ◽  
...  
Keyword(s):  
Plant Growth ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Plant Growth Promoting Bacteria ◽  
Cymbopogon Citratus ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Teamwork to Survive in Hostile Soils: Use of Plant Growth-Promoting Bacteria to Ameliorate Soil Salinity Stress in Crops

2022 ◽  
Vol 10 (1) ◽  
pp. 150
Author(s):  
Rafael Jiménez-Mejía ◽  
Ricardo I. Medina-Estrada ◽  
Santos Carballar-Hernández ◽  
Ma. del Carmen Orozco-Mosqueda ◽  
Gustavo Santoyo ◽  
...  
Keyword(s):  
Plant Growth ◽  
Soil Salinity ◽  
Saline Soils ◽  
Plant Growth Promoting Bacteria ◽  
Negative Consequences ◽  
The World ◽  
Different Types ◽  
Plant Growth Promoting ◽  
Growth Promoting

Plants and their microbiomes, including plant growth-promoting bacteria (PGPB), can work as a team to reduce the adverse effects of different types of stress, including drought, heat, cold, and heavy metals stresses, as well as salinity in soils. These abiotic stresses are reviewed here, with an emphasis on salinity and its negative consequences on crops, due to their wide presence in cultivable soils around the world. Likewise, the factors that stimulate the salinity of soils and their impact on microbial diversity and plant physiology were also analyzed. In addition, the saline soils that exist in Mexico were analyzed as a case study. We also made some proposals for a more extensive use of bacterial bioinoculants in agriculture, particularly in developing countries. Finally, PGPB are highly relevant and extremely helpful in counteracting the toxic effects of soil salinity and improving crop growth and production; therefore, their use should be intensively promoted.

scholarly journals İklim Değişikliğinin Bitki-Faydalı Mikroorganizma Etkileşimleri Üzerindeki Etkileri

2022 ◽  
Vol 9 (sp) ◽  
pp. 2594-2603
Author(s):  
Kubilay Kurtulus Bastas
Keyword(s):  
Climate Change ◽  
Plant Growth ◽  
Mycorrhizal Fungi ◽  
Global Climate ◽  
Plant Growth Promoting Bacteria ◽  
Plant Interactions ◽  
Beneficial Microorganisms ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Carbon Dioxide Co2

Global climate is estimated to change drastically over the next century and the ecosystems will be affected in this changing environment. Plant-associated beneficial microorganisms can stimulate plant growth and increase resistance to biotic and abiotic stresses. Nowadays, the effects of climate change factors such as increased carbon dioxide (CO2), drought and warming on plant-beneficial microorganism interactions are increasingly being investigated in the scope of plant growth and health. Recent studies have shown that high CO2 level has a positive effect on the abundance of mycorrhizal fungi, whereas the effects on plant growth promoting bacteria and endophytic fungi are more variable. Elevated CO2 conditions lead to increased colonization of beneficial fungi. Additionally, the results of increasing CO2 levels, warming and drought, depend upon the plant and the microbial genotype. Also, plant growth promoting microorganisms, especially bacteria, positively affect plants exposed to drought stress. Altered communities of beneficial microorganisms depending on climate changes, might have to compete with different microbial communities and, therefore microbial activities may also get affected. This work presents that climate change is an important factor affecting microorganism and plant interactions, needs to take into consideration the adaptation processes in plants and microorganisms and might require the selection of adapted plant cultivars.

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