Biological Nitrogen Fixation

Bruijn, Frans J. de; Hungría, Mariangela

doi:10.1002/9781119762621.ch37

Cited by 7 publications

(7 citation statements)

References 37 publications

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“…Plant growth hormones, such as auxins (indole-3-acetic acid), gibberellins, abscisic acids, ethylene, and cytokinins, are biosynthesized by microorganisms. For synthesis, a considerable amount of metabolic energy and nutrients are required [35,37]. Ethylene, jasmonic acid, and salicylic acid are stress-related regulators of plant immunity that are involved in the creation of a central signaling backbone that coordinates defense responses against phytopathogens [38].…”

Section: Phytohormone Productionmentioning

confidence: 99%

Beneficial Soil Microbiomes and Their Potential Role in Plant Growth and Soil Fertility

Vincze,

Becze,

Laslo

et al. 2024

Agriculture

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The soil microbiome plays an important role in maintaining soil health, plant productivity, and soil ecosystem services. Current molecular-based studies have shed light on the fact that the soil microbiome has been quantitatively underestimated. In addition to metagenomic studies, metaproteomics and metatranscriptomic studies that target the functional part of the microbiome are becoming more common. These are important for a better understanding of the functional role of the microbiome and for deciphering plant-microbe interactions. Free-living beneficial bacteria that promote plant growth by colonizing plant roots are called plant growth-promoting rhizobacteria (PGPRs). They exert their beneficial effects in different ways, either by facilitating the uptake of nutrients and synthesizing particular compounds for plants or by preventing and protecting plants from diseases. A better understanding of plant-microbe interactions in both natural and agroecosystems will offer us a biotechnological tool for managing soil fertility and obtaining a high-yield food production system.

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Section: Phytohormone Productionmentioning

confidence: 99%

Beneficial Soil Microbiomes and Their Potential Role in Plant Growth and Soil Fertility

Vincze,

Becze,

Laslo

et al. 2024

Agriculture

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“…Species of Rhizobium and other bacteria establish a symbiotic relationship with the roots of common bean plants, converting atmospheric nitrogen into a usable form for the plants. Biological nitrogen fixation (BNF) is a natural process that involves the transformation of atmospheric nitrogen (N 2 ) into ammonia (NH 3 ), a form of nitrogen assimilated by plants [59]. This process is carried out by diazotrophic bacteria, known as rhizobia, which, in association with plants of the legume family, form specialized structures called nodules on the roots or stems, where BNF takes place (Figure 3).…”

Section: Biological Nitrogen Fixationmentioning

confidence: 99%

“…In the nodules (Figure 3), the process of BNF occurs, where bacteria, mainly belonging to the genera Rhizobium, Bradyrhizobium, and Sinorhizobium, establish a mutualistic relationship with the plants. The bacteria colonize the interior of the nodules and, in exchange for carbohydrates and organic compounds provided by the host plant, are capable of capturing atmospheric nitrogen and converting it into a form that plants can use as a nutrients [59]. Biological nitrogen fixation is essential for the nutrition of legume plants, since nitrogen is a fundamental element for the synthesis of proteins, DNA, and other vital compounds.…”

Section: Biological Nitrogen Fixationmentioning

confidence: 99%

“…Other beneficial microorganisms, such as nitrogen-fixing bacteria and organic matter decomposers, also contribute to improving soil structure and nutritional enrichment. Nitrogen-fixing bacteria transform atmospheric nitrogen into a form that can be used by plants, reducing the need for chemical nitrogen fertilizers [59]. Meanwhile, bacteria and fungi that decompose organic matter break it down into simpler compounds, releasing nutrients to the plants and enhancing soil fertility [66].…”

Section: Improvement Of Soil Structurementioning

confidence: 99%

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Microbial Insights into Biofortified Common Bean Cultivation

Cardoso,

da Silva,

de Pádua

2024

Sci

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Microorganisms play a fundamental role in sustainable agriculture, and their importance in common bean (Phaseolus vulgaris) cultivation cannot be underestimated. This review article aims to comprehensively explore the diverse roles of microorganisms in sustainable biofortified common bean cultivation. Biofortification refers to the process of increasing the nutrient content in crops, which helps combat deficiencies in iron, zinc, and vitamins in the human body. Biofortified beans have better agronomic characteristics and offer higher micronutrient content compared to conventional crops. We examine the contribution of various microbial communities in nitrogen fixation, soil structure improvement, nutrient recycling, and disease suppression. Understanding the interaction between beneficial microorganisms and biofortified common bean plants enables us to develop ecologically sound and sustainable approaches to optimize crop productivity and improve nutrition and livelihoods for millions of people worldwide while reducing the environmental impact of agricultural practices.

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“…It is known that the efficacy of PGPM inoculation depends on soil pH, ability of the microbe to compete with the native strains, temperature, and host specificity [ 30 ]. Microbial strains, therefore, contribute to alleviating effects of stresses on plants such as nitrogen deficiency [ 31 ], drought [ 32 , 33 ], salinity [ 34 , 35 , 36 ], acidity, and alkalinity [ 12 , 37 ]. However, the use of microbes or microbial products in dealing with acidity and alkalinity stress in plants is still fragmented.…”

Section: Introductionmentioning

confidence: 99%

Cell-Free Supernatant (CFS) from Bacillus subtilis EB2004S and Lactobacillus helveticus EL2006H Cultured at a Range of pH Levels Modulates Potato Plant Growth under Greenhouse Conditions

Msimbira

Naamala

Subramanian

et al. 2023

IJMS

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Agriculture involving industrial fertilizers is another major human made contributing factor to soil pH variation after natural factors such as soil parent rock, weathering time span, climate, and vegetation. The current study assessed the potential effect of cell-free supernatant (CFS) obtained from Bacillus subtilis EB2004S and Lactobacillus helveticus EL2006H cultured at three pH levels (5, 7, and 8) on potato (var Goldrush) growth enhancement in a greenhouse pot experiment. The results showed that CFSs obtained from B. subtilis EB2004S and L. helveticus EL2006H cultured at pH 5 significantly improved photosynthetic rates, stomatal conductance, root fresh weight, and whole plant fresh weight. interactive effects of pot pH and that of CFSs obtained from pH 5 influenced chlorophyll, plant height, and shoot and whole plant fresh weight. Moreover, treatment 52EB2004S~0.4% initiated early tuberization for potato grown at pH 7 and 8. Potato grown at pH 5, which received a 72EB2004S~0.4% CFS treatment, had greater whole plant fresh and dry weight than that treated with L. helveticus EL2006H CFS and a positive control. Taken together, the findings of this study are unique in that it probed the effect of CFS produced under differing pH conditions which revealed a new possibility to mitigate stresses in plants.

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Biological Nitrogen Fixation

Cited by 7 publications

References 37 publications

Beneficial Soil Microbiomes and Their Potential Role in Plant Growth and Soil Fertility

Beneficial Soil Microbiomes and Their Potential Role in Plant Growth and Soil Fertility

Microbial Insights into Biofortified Common Bean Cultivation

Cell-Free Supernatant (CFS) from Bacillus subtilis EB2004S and Lactobacillus helveticus EL2006H Cultured at a Range of pH Levels Modulates Potato Plant Growth under Greenhouse Conditions

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