Role of Endophytic Bacteria in Stress Tolerance of Agricultural Plants: Diversity of Microorganisms and Molecular Mechanisms

Tamošiūnė, Inga; Baniulis, Danas; Stanys, V.

doi:10.1007/978-981-10-4059-7_1

Cited by 20 publications

(13 citation statements)

References 195 publications

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“…It is known that endophytic bacteria are located in the apoplast (Koskimäki et al, 2015), and plant roots are proposed to be the entry point (Paungfoo-Lonhienne et al, 2010). It is also suggested that they are transmitted using an alternative vertical strategy due to their presence in flowers and seeds (Tamosiune et al, 2017). The potential explanation for their ubiquitous presence into plant tissues is the diversity of positive effects on plant growth and fitness they have shown, by stimulating the host phenylpropanoid pathway or by producing several linked-metabolites to the plants’ metabolism (Brader et al, 2014; Haidar et al, 2016; Lòpez-Fernàndez et al, 2016; Alaimo et al, 2018).…”

Section: Introduction To Endophytesmentioning

confidence: 99%

Bioactive Products From Plant-Endophytic Gram-Positive Bacteria

et al. 2019

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Endophytes constitute plant-colonizing microorganisms in a mutualistic symbiosis relationship. They are found in most ecosystems reducing plant crops’ biotic and abiotic stressors by stimulating immune responses, excluding plant pathogens by niche competition, and participating in antioxidant activities and phenylpropanoid metabolism, whose activation produces plant defense, structural support, and survival molecules. In fact, metabolomic studies have demonstrated that endophyte genes associated to specific metabolites are involved in plant growth promotion (PGP) by stimulating plant hormones production such as auxins and gibberellins or as plant protective agents against microbial pathogens, cancer, and insect pests, but eco-friendly and eco-safe. A number of metabolites of Gram-positive endophytes isolated from agriculture, forest, mangrove, and medicinal plants, mainly related to the Firmicutes phyla, possess distinctive biocontrol and plant growth-promoting activities. In general, Actinobacteria and Bacillus endophytes produce aromatic compounds, lipopeptides, plant hormones, polysaccharides, and several enzymes linked to phenylpropanoid metabolism, thus representing high potential for PGP and crop management strategies. Furthermore, Actinobacteria have been shown to produce metabolites with antimicrobial and antitumor activities, useful in agriculture, medicine, and veterinary areas. The great endophytes diversity, their metabolites production, and their adaptation to stress conditions make them a suitable and unlimited source of novel metabolites, whose application could reduce agrochemicals usage in food and drugs production.

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Section: Introduction To Endophytesmentioning

confidence: 99%

Bioactive Products From Plant-Endophytic Gram-Positive Bacteria

et al. 2019

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“…Soil hosts a plethora of microbes and has been widely accepted as the "base camp" and ideal habitats for various bacteria, and it is also the origin of plant-associated microbes [38,39]. Generally, microbes in plants origin from two pathways: horizontal and vertical transmissions [40,41].…”

Section: Niche Selection Of Key Microbesmentioning

confidence: 99%

“…Piouceau et al [12] have also found that photosynthetic activities of bamboos increase after combined applications of N and other nutrients. Endophytic microbial colonization in plants could also increase plant biomass and commercial production and thus have useful applications in agroforestry [19,27,39]. Endophytic microbes in plants confer various bioactive compounds (protease, lipase laccase, and antiviral or insecticidal compounds) and protection against harsh conditions of contamination, drought and pathogen [48][49][50].…”

Section: Linking Moso Bamboo Growth With Soil Nutrient Management Andmentioning

confidence: 99%

Phyllostachys edulis (moso bamboo) ages significantly affect soil nitrogen transformation and endophytic microbes but niche differentiations outweigh ages in shaping microbial communities of moso bamboo-soil system

Zhang¹,

Weijin²,

Bai³

et al. 2020

Preprint

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Background: Phyllostachys edulis (moso bamboo) is a key source of non-wood forest products. Clarifying the linkage among bamboo growth, soil nutrient and core microbe can expand the horizon on nutrient management practices and functional endophytic and rhizospheric microbes.Results: In this study, young (0.5-yr), mature (2.5-yr and 4.5-yr) and old (6.5-yr) bamboo plants were selected in a moso bamboo field, and above-ground tissues, below-ground roots (rhizomes) and rhizospheric soils were sampled. The bamboo biomass, soil properties and endophytic microbes were determined and quantify their comprehensive relationships. Bamboo ages had negligible impacts on the bamboo height, diameter at breast height and above-ground biomass. Organic matter and nitrogen (N) contents in the rhizospheric soil of the 0.5-yr bamboo were significantly higher than those of the other three age groups. The rhizospheric soil of the 6.5-yr bamboo had the lowest N mineralization rate and urease activity. Significant differences in bacterial and fungal communities were found in the above-ground tissues but not in the rhizospheric soils associated with plants of different ages. Bacterial and fungal community structures in the above-ground tissues were significantly different from their counterparts in the rhizospheric soils. Conclusions: Bamboo ages significantly affected N transformation rates, functional gene abundances and urease activities of rhizospheric soils and endophytic bacterial community structures. However, niche differentiations outweighed ages in shaping the whole microbial communities of bamboo aboveground tissues, roots and rhizospheric soils. In the future, moso bamboo management should consider balanced applications of ammonium-N and other nutrients and utilisations of Chytridiomycota to stimulate moso bamboo growth.

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“…Enzymes from endophytic bacteria are more beneficial and produce faster. According to [1,5] that endophytic bacteria provide several benefits for host plants such as plant growthpromoting activity, modulation of plant metabolism, and phytohormones signaling. This bacterial activity is often used by researchers and industry as materials for making biofertilizer products, and the biotechnology industry to produce antibiotics [6].…”

Section: Introductionmentioning

confidence: 99%

The Study Application of Water Hyacinth Biofertilizer Towards the Existence of Endophytic Bacteria in Maize Plant

Sondang¹,

Siregar²,

Anty³

2021

Proceedings of the 3rd KOBI Congress, International and National Conferences (KOBICINC 2020)

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Endophytic bacteria are bacteria that live in plant tissue without destroying the host plant. The presence of endophytic bacteria in plant tissue can produce phytohormones to stimulate growth and increase plant resistance to disease. The purpose of this study is to identify endophytic bacteria from the root tissue of maize plants treated with water hyacinth biofertilizer and to calculate the number of bacterial populations. The research was conducted at the Experimental Garden and Laboratory of the Payakumbuh State Agricultural Polytechnic. The treatments of biofertilizer were carried out by immersing the seeds in biofertilizer 4% solution for 12 hours, then maize plants were treated with a biofertilizer in the planting hole, and the age of the plants was 14, 28, 42, 56 days after planting. Observation parameters were carried out on endophytic bacteria of the maize plant and the number of bacterial populations. Identification of bacterial morphology based on colony shape, colony edges, colony elevation, surface, color, bacterial density, and gram staining. Bacterial species were identified using molecular analysis based on the 16S rRNA gene fragment. The identification results of maize root endophytic bacteria found 4 dominant bacterial with several bacterial populations species such as B. paramycoides 12,1 x 10 7 CFU/ml, P. aeruginosa 4,3 x 10 7 CFU/ml, B. subtilis 9,4 x 10 7 CFU/ml, and B. licheniformis 5,95 x 10 6 CFU/ml.

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Role of Endophytic Bacteria in Stress Tolerance of Agricultural Plants: Diversity of Microorganisms and Molecular Mechanisms

Cited by 20 publications

References 195 publications

Bioactive Products From Plant-Endophytic Gram-Positive Bacteria

Bioactive Products From Plant-Endophytic Gram-Positive Bacteria

Phyllostachys edulis (moso bamboo) ages significantly affect soil nitrogen transformation and endophytic microbes but niche differentiations outweigh ages in shaping microbial communities of moso bamboo-soil system

The Study Application of Water Hyacinth Biofertilizer Towards the Existence of Endophytic Bacteria in Maize Plant

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