scholarly journals Arbuscular Mycorrhizal Fungi and Plant Growth Promoting Rhizobacteria Avoid Processing Tomato Leaf Damage during Chilling Stress

Agronomy ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 299 ◽  
Author(s):  
Federica Caradonia ◽  
Enrico Francia ◽  
Caterina Morcia ◽  
Roberta Ghizzoni ◽  
Lionel Moulin ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Mycorrhizal Fungi ◽  
Crop Production ◽  
Chilling Stress ◽  
Arbuscular Mycorrhizal ◽  
Plant Growth Promoting Rhizobacteria ◽  
Leaf Damage ◽  
Growth And Yield ◽  
Processing Tomato ◽  
Plant Growth Promoting

Chilling stress limits processing tomato growth and yield, leading to high losses. An approach to increase the sustainability of crop production could involve the use of beneficial microorganisms. The objectives of this research were to investigate: (i) the efficacy of Funneliformis mosseae and Paraburkholderia graminis C4D1M in avoiding processing tomato damage during severe chilling stress; (ii) the synergic effect of the two microorganisms inoculated as a consortium; (iii) if the putative microorganism effects depended on the processing tomato genotype. To achieve these objectives, two experiments were carried out. In the first experiment, a modern genotype was assessed, while three genotypes were evaluated in the second experiment. At sowing, F. mosseae was mixed with peat. Nine days after sowing, P. graminis was inoculated close to the plant’s root collar. After 40 days of seed sowing, chilling treatment was performed at 1 °C for 24 h. F. mosseae mainly reduced the cell membrane injuries in term of electrolytic leakage and efficiency of photosystem II, after the chilling stress in both experiments. Conversely, in the second experiment, the consortium improved the seedling regrowth, increasing the efficiency of photosystem II. In addition, modern genotypes inoculated with microorganisms showed a better seedling regrowth.

scholarly journals Amelioration of water deficiency stress in roselle (Hibiscus sabdariffa) by arbuscular mycorrhizal fungi and plant growth-promoting rhizobacteria

2021 ◽  
Vol 49 (2) ◽  
pp. 11987
Author(s):  
Sara SANAYEI ◽  
Morteza BARMAKI ◽  
Ali EBADI ◽  
Mousa TORABI-GIGLOU
Keyword(s):  
Plant Growth ◽  
Seed Yield ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Dry Weight ◽  
Plant Growth Promoting Rhizobacteria ◽  
Growth And Yield ◽  
Water Deficiency ◽  
Plant Growth Promoting ◽  
Growth Promoting

Belowground interactions between plant roots, arbuscular mycorrhizal fungi (AMFs), and plant growth-promoting rhizobacteria (PGPR) can improve growth and yield under abiotic stress conditions. A pot factorial experiment based on completely randomized design with three replications was conducted to investigate the effects of AMFs (without inoculation as control, inoculation with Funneliformis mosseae and Funneliformis intraradices) and PGPRs (without inoculation as control Pseudomonas fluorescens p-169 inoculation) on roselle (Hibiscus sabdariffa L.) grown under water deficiency stress (WDS) [90% (I1), 75% (I2), 50% (I3), and 25% (I4) of field capacity as well-watered, mild, moderate, and severe stress, respectively]. The results showed that by applying WDS, the plant growth properties such as root and sepals’ dry weight, 1000-seed weight, seed yield, chlorophyll a, b, and total, carotenoids, and leaf water content was significantly reduced. The application of AMFs and PGPR under WDS conditions increased 1000-seed weight, seed yield. In response to WDS osmotic adjustment were provided in Roselle and under stress conditions. The highest seed yield was found under well-watered treatment by inoculation of F. mosseae without PGPR and the application of Pseudomonas fluorescens (6.37 and 6.51 g/plant, respectively). These results suggesting the antagonistic effects of AMFs and PGPR. AMFs inoculation under severe stress increased sepals dry weight compared to the non-inoculation. In conclusion, increased activity of enzymatic antioxidants and higher production of non-enzymatic antioxidant compounds, as well as photosynthetic pigments in symbiotic association with AMFs, can alleviate reactive oxygen species damage resulting in increased growth and yield parameters and improve water stress tolerance.

scholarly journals Plant Growth-Promoting Microorganisms in Coffee Production: From Isolation to Field Application

Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1531
Author(s):  
Narcisa Urgiles-Gómez ◽  
María Eugenia Avila-Salem ◽  
Paúl Loján ◽  
Max Encalada ◽  
Leslye Hurtado ◽  
...  
Keyword(s):  
Plant Growth ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Plant Growth Promoting Rhizobacteria ◽  
Agroforestry Systems ◽  
Field Application ◽  
Coffee Production ◽  
Coffee Agroforestry ◽  
Plant Growth Promoting ◽  
Growth Promoting

Coffee is an important, high-value crop because its roasted beans are used to produce popular beverages that are consumed worldwide. Coffee plantations exist in over 70 countries and constitute the main economic activity of approximately 125 million people. Currently, there is global concern regarding the excessive use of agrochemicals and pesticides in agriculture, including coffee crops. This situation has motivated researchers, administrators, and farmers to seek ecologically friendly alternatives to decrease the use of synthetic fertilizers and pesticides. In the last decades, multiple studies of the rhizosphere, at the chemical, physical and biological levels, have improved our understanding of the importance of beneficial microorganisms to plant health and growth. This review aims to summarize the state of the use of plant growth-promoting microorganisms (PGPM) in coffee production, where the most extensively studied microorganisms are beneficial plant growth-promoting rhizobacteria (PGPR) and arbuscular mycorrhizal fungi (AMF). This review also contains information on PGPM, in regard to plantations at different latitudes, isolation techniques, mass multiplication, formulation methods, and the application of PGPM in nurseries, monoculture, and coffee agroforestry systems. Finally, this review focuses on relevant research performed during the last decade that can help us improve sustainable coffee production.

scholarly journals Towards a Sustainable Agriculture: Strategies Involving Phytoprotectants against Salt Stress

Agronomy ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 194 ◽  
Author(s):  
José Ramón Acosta-Motos ◽  
Consuelo Penella ◽  
José A. Hernández ◽  
Pedro Díaz-Vivancos ◽  
María Jesús Sánchez-Blanco ◽  
...  
Keyword(s):  
Salt Stress ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Plant Growth Promoting Rhizobacteria ◽  
Antioxidant Metabolism ◽  
Water Demands ◽  
Industrial Sectors ◽  
Treatment Conditions ◽  
Plant Growth Promoting ◽  
Related Compounds

Salinity is one of the main constraints for agriculture productivity worldwide. This important abiotic stress has worsened in the last 20 years due to the increase in water demands in arid and semi-arid areas. In this context, increasing tolerance of crop plants to salt stress is needed to guarantee future food supply to a growing population. This review compiles knowledge on the use of phytoprotectants of microbial origin (arbuscular mycorrhizal fungi and plant growth-promoting rhizobacteria), osmoprotectants, melatonin, phytohormones and antioxidant metabolism-related compounds as alleviators of salt stress in numerous plant species. Phytoprotectants are discussed in detail, including their nature, applicability, and role in the plant in terms of physiological and phenotype effects. As a result, increased crop yield and crop quality can be achieved, which in turn positively impact food security. Herein, efforts from academic and industrial sectors should focus on defining the treatment conditions and plant-phytoprotectant associations providing higher benefits.

scholarly journals Effect of Lime, Compost and Microbial Inoculants on Micronutrient Removal by Mustard and Maize in Trace Metal Contaminated Soil of Jharkhand

2017 ◽  
Vol 5 (2) ◽  
pp. 196-199
Author(s):  
Amrit Kumar Jha
Keyword(s):  
Trace Metal ◽  
Contaminated Soil ◽  
Mycorrhizal Fungi ◽  
Metal Removal ◽  
Cropping System ◽  
Arbuscular Mycorrhizal ◽  
Plant Growth Promoting Rhizobacteria ◽  
Microbial Inoculants ◽  
Microbial Inoculation ◽  
Plant Growth Promoting

A field experiment was conducted on trace metal contaminated soil at Patratu (Ramgarh) to study the effect of lime, compost, plant growth promoting rhizobacteria and arbuscular mycorrhizal fungi on micronutrient removal viz. Zn, Cu, Mn and Fe in mustard-maize cropping system. Results reveal that inoculation with Glomus mossae, Pseudomonas striata and Azotobacter chroococcum increased Zn concentration to the extent 13 to 32, 10 to 24 and 9 to 24 (%), respectively over control. Copper, manganese and iron uptake followed almost similar trend as that of Zn. Microbial inoculants with or without vermicompost increased the trace metal removal, however, vermicompost alone decreased the removal. It was observed that microbial inoculations reduced the total Zn, Cu, Mn and Fe content in soil. However, available micronutrients were significantly reduced by microbial inoculation and amendments.

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