Rhizosphere microbiome: Engineering bacterial competitiveness for enhancing crop production

Journal of Advanced Research, Journal Year: 2020, Volume and Issue: 24, P. 337 - 352

Published: April 30, 2020

Plants in nature are constantly exposed to a variety of abiotic and biotic stresses which limits their growth production. Enhancing crop yield production feed exponentially growing global population sustainable manner by reduced chemical fertilization agrochemicals will be big challenge. Recently, the targeted application beneficial plant microbiome cocktails counteract stress is gaining momentum becomes an exciting frontier research. Advances next generation sequencing (NGS) platform, gene editing technologies, metagenomics bioinformatics approaches allows us unravel entangled webs interactions holobionts core microbiomes for efficiently deploying increase crops nutrient acquisition resistance stress. In this review, we focused on shaping rhizosphere susceptible host from resistant comprises specific type microbial community with multiple potential benefits CRISPR/Cas9 based strategies manipulation susceptibility genes plants improving health. This review significant providing first-hand information improve fundamental understanding process helps microbiome.

Language: Английский

---

Agricultural Sustainability: Microbial Biofertilizers in Rhizosphere Management

Agriculture, Journal Year: 2021, Volume and Issue: 11(2), P. 163 - 163

Published: Feb. 17, 2021

The world’s human population continues to increase, posing a significant challenge in ensuring food security, as soil nutrients and fertility are limited decreasing with time. Thus, there is need increase agricultural productivity meet the demands of growing population. A high level dependence on chemical fertilizers means increasing production has damaged ecological balance health becoming too expensive for many farmers afford. exploitation beneficial microorganisms substitute one potential solution this conundrum. Microorganisms, such plant growth-promoting rhizobacteria mycorrhizal fungi, have demonstrated their ability formulation biofertilizers sector, providing plants required enhance growth, yield, manage abiotic biotic stress, prevent phytopathogens attack. Recently, microbes been reported produce some volatile organic compounds, which plants, amendment these locally available materials nanoparticles currently used formulate productivity. This review focuses important role performed by cost-effective, nontoxic, eco-friendly approach management rhizosphere promote growth yield.

Language: Английский

---

Trichoderma Species: Versatile Plant Symbionts

Phytopathology, Journal Year: 2018, Volume and Issue: 109(1), P. 6 - 16

Published: Nov. 9, 2018

Because of the need to provide food for growing population, agricultural activity is faced with huge challenge counteracting negative effects generated by adverse environmental factors and diseases caused pathogens on crops, while avoiding pollution due excessive use agrochemicals. The exploitation biological systems that naturally increase plant vigor, preparing them against biotic abiotic stressors also promote their growth productivity represents a useful viable strategy help face these challenges. Fungi from genus Trichoderma have been widely used in agriculture as biocontrol agents because mycoparasitic capacity ability improve health protection phytopathogens, which makes it an excellent symbiont. mechanisms employed include secretion effector molecules secondary metabolites mediate beneficial interaction plants, providing tolerance stresses. Here we discuss most recent advances understanding this opportunistic symbiont agent promoter. In addition, through genome mining approached less explored factor could be using become successful symbionts, production phytohormones—auxins, cytokinins, abscisic acid, gibberellins, among others. This approach allowed us detect sets genes encoding proteins potentially involved phytohormone biosynthesis signaling. We implications findings physiology fungus establishment its plants.

Language: Английский

---

Rhizosphere microbiome: revisiting the synergy of plant-microbe interactions

Annals of Microbiology, Journal Year: 2019, Volume and Issue: 69(4), P. 307 - 320

Published: Feb. 23, 2019

Language: Английский

---

Trichoderma Species: Our Best Fungal Allies in the Biocontrol of Plant Diseases—A Review

Plants, Journal Year: 2023, Volume and Issue: 12(3), P. 432 - 432

Published: Jan. 17, 2023

Biocontrol agents (BCA) have been an important tool in agriculture to prevent crop losses due plant pathogens infections and increase food production globally, diminishing the necessity for chemical pesticides fertilizers offering a more sustainable environmentally friendly option. Fungi from genus Trichoderma are among most used studied microorganisms as BCA variety of biocontrol traits, such parasitism, antibiosis, secondary metabolites (SM) production, defense system induction. Several species well-known mycoparasites. However, some those can antagonize other organisms nematodes pests, making this fungus very versatile BCA. has part innovative bioformulations, either just or combination with plant-beneficial microbes, growth-promoting bacteria (PGPB). Here, we review recent literature regarding studies about six species, T. atroviride, harzianum, asperellum, virens, longibrachiatum, viride, highlighting their traits use these fungal genera Trichoderma-based formulations control diseases, importance substitute fertilizers.

Language: Английский

---

Control of nitrogen fixation in bacteria that associate with cereals

Nature Microbiology, Journal Year: 2019, Volume and Issue: 5(2), P. 314 - 330

Published: Dec. 16, 2019

Language: Английский

---

The Microbial Connection to Sustainable Agriculture

Plants, Journal Year: 2023, Volume and Issue: 12(12), P. 2307 - 2307

Published: June 14, 2023

Microorganisms are an important element in modeling sustainable agriculture. Their role soil fertility and health is crucial maintaining plants' growth, development, yield. Further, microorganisms impact agriculture negatively through disease emerging diseases. Deciphering the extensive functionality structural diversity within plant-soil microbiome necessary to effectively deploy these organisms Although both plant have been studied over decades, efficiency of translating laboratory greenhouse findings field largely dependent on ability inoculants or beneficial colonize maintain stability ecosystem. its environment two variables that influence microbiome's structure. Thus, recent years, researchers looked into engineering would enable them modify microbial communities order increase effectiveness inoculants. The environments believed support resistance biotic abiotic stressors, fitness, productivity. Population characterization manipulation, as well identification potential biofertilizers biocontrol agents. Next-generation sequencing approaches identify culturable non-culturable microbes associated with expanded our knowledge this area. Additionally, genome editing multidisciplinary omics methods provided scientists a framework engineer dependable high yield, resistance, nutrient cycling, management stressors. In review, we present overview agriculture, engineering, translation technology field, main used by laboratories worldwide study microbiome. These initiatives advancement green technologies

Language: Английский

---

Rhizosphere competence and applications of plant growth-promoting rhizobacteria in food production – A review

Scientific African, Journal Year: 2024, Volume and Issue: 23, P. e02081 - e02081

Published: Jan. 11, 2024

Sustainable food production, among other non-intensive production systems, involves the important interactions of myriads plant growth-promoting microorganisms, plant, soil, soil fauna, and utilizable carbon in rhizosphere capable enhancing health, growth, protection that lead to increased crop productivity. Plant rhizobacteria (PGPR) including symbiotic rhizobia free-living possess traits help enhance growth due their many modes action start with ability colonize both intracellular extracellular niche search for a source reduction free use quantity agrochemicals. In past few decades, focus on developing biosafety agro-products has shifted from agrochemical-based applications more sustainable system without posing negative impacts microflora or fauna. The present review focuses application PGPR inoculants soils seeds improve biological nitrogen fixation, solubilization phosphate, secretion phytohormones required especially pressured environment. We discuss how enhances nutritional regulation hormonal balance plants, bacterial taxa enrichment, improvement sources utilization beneficial growth. highlight antagonistic synergistic microorganisms within beyond bulk which indirectly boosts rate induces resistance against phytopathogens. While soil-borne pathogens continually oppose functions these improved diverse strategies form agro-compatibility, root colonization, nutrient, iron, space competition, systemic resistance, antibiotics synthesis, lytic acid, hydrogen cyanide, siderophore advanced production. Finally, we highlighted roles phytoremediation, techniques applying microbial commercialization products challenges countries have defeat.

Language: Английский

---

Effects of rhizobia and arbuscular mycorrhizal fungi on yield, size distribution and fatty acid of soybean seeds grown under drought stress

Microbiological Research, Journal Year: 2020, Volume and Issue: 242, P. 126640 - 126640

Published: Nov. 2, 2020

Soybean (Glycine max L.) is among the most economically important legumes that provide more than 1/4 of food (for man) and animal feed. However, its yield comparatively low, especially under drought stress. The aim this study therefore was to assess ability Rhizobium spp. mycorrhizal fungi enhance yield, seed size fatty acid content soybean grown semi-arid environment. sp. strain R1 found possess nitrogen-fixing gene coniferyl aldehyde dehydrogenase function while cellulosilyticum R3 have genes cysteine desulfurase SufS IscS activity. L) seeds inoculated with were cultivated in soil exposed inoculation mycorrhization alleviate stress increase fat seeds. This aboveground parameters accompanied an belowground spore number, percentage root shoot relative water (RWC) dually (R1 + R3MY) plants. In particular, plants revealed 34.3 g fresh weight, 15.1 dry weight singly (R1) produced large 12.03 weight. non-inoculated (control) contained a higher moisture compared microbially amended co-inoculated consortium highest percent (8.4 %) fat. Several acids are significant health benefits humans observed order gain insights into bacterial communities rhizospheric collected at different stages growth, class-based Heat-map analysis performed on Miseq sequenced data. core bacteria Verrumicrobia, Proteobacteria, Gemmatimonadetes, Firmicutes, Cyanobacteria, Chloroflexi, Bacteroidetes, Actinobacteria, Acidobacteria, Planctomycetes, Deinococcus thermus Nitrospira suggesting rhizobia used can also improve microbial diversity.

Language: Английский

---

Genomic insights into plant growth promoting rhizobia capable of enhancing soybean germination under drought stress

BMC Microbiology, Journal Year: 2019, Volume and Issue: 19(1)

Published: July 11, 2019

The role of soil microorganisms in plant growth, nutrient utilization, drought tolerance as well biocontrol activity cannot be over-emphasized, especially this era when food crisis is a global challenge. This research was therefore designed to gain genomic insights into growth promoting (PGP) Rhizobium species capable enhancing soybean (Glycine max L.) seeds germination under condition.Rhizobium sp. strain R1, tropici R2, cellulosilyticum R3, taibaishanense R4 and Ensifer meliloti R5 were found possess the entire PGP traits tested. Specifically, these rhizobial strains able solubilize phosphate, produce exopolysaccharide (EPS), 1-aminocyclopropane-1-carboxylate (ACC), siderophore indole-acetic-acid (IAA). These also survived grew at temperature 45 °C an acidic condition with pH 4. Consequently, all enhanced (PAN 1532 R) imposed by 4% poly-ethylene glycol (PEG); nevertheless, R1 R. R3 inoculations improve more than strains. Thus, revealed presence some genes their respective proteins involved symbiotic establishment, nitrogen fixation, promotion. In particular, exoX, htrA, Nif, nodA, eptA, IAA siderophore-producing two strains.Therefore, availability whole genome sequences may further exploited comprehend interaction tolerant rhizobia other legumes ability can harnessed for biotechnological application field semiarid arid regions globe.

Language: Английский

---