Root exudates influence chemotaxis and colonization of diverse plant growth promoting rhizobacteria in the pigeon pea – maize intercropping system

Vora, Siddhi M.; Joshi, Purvi; Belwalkar, Mugdha; Archana, G.

doi:10.1016/j.rhisph.2021.100331

Cited by 54 publications

(35 citation statements)

References 55 publications

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“…It can also through mediate the root-specific signal molecules that caused rhizosphere priming effects then change the microbial community composition (Fontaine et al 2003). The study indicated that the root exudates of Zea mays interaction with or without root exudates of Cajanus cajan will change the content of root exudates and effect the chemotaxis of bacteria (Vora et al 2021).…”

Section: Resultsmentioning

confidence: 96%

Effects of wheat root exudates on bacterial communities in the rhizosphere of watermelon

Shi¹,

Gong²,

Rahman³

et al. 2021

PLANT SOIL ENVIRON

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In this study, we investigated the effects of wheat root exudates on soil bacterial communities in the watermelon rhizosphere using quantitative PCR and Illumina MiSeq sequencing. The qPCR results showed that wheat root exudates significantly increased the abundance of total bacteria, Pseudomonas, Bacillus and Streptomyces spp. Illumina MiSeq sequencing results showed that wheat root exudates significantly changed the bacterial community structure and composition. These results indicated that plant root exudates play a role in plant-to-plant signalling, strongly affect the microbial community composition.

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Section: Resultsmentioning

confidence: 96%

Effects of wheat root exudates on bacterial communities in the rhizosphere of watermelon

Shi¹,

Gong²,

Rahman³

et al. 2021

PLANT SOIL ENVIRON

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“…①Dilute various commercially available sugars (fucose, arabinose, galactose, et al) to configure the standard Liquid, and the concentration was 1μg/mL, 5μg/mL, 10μg/mL, 20μg/mL, 30μg/mL, 40μg/mL and 60μg/mL. environmental pressure [28][29]. We also found that the root exudates of Fraxinus mandschurica were different at different collection times.…”

Section: The Sugars Target Analysis Methodsmentioning

confidence: 69%

Identification of sugars in root exudates of Fraxinus mandschurica

Research¹

2022

Preprint

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Root exudates are a series of organic compounds from plant roots, they contain a variety of trace compounds, such as sugars, organic acids, and amino acids. Meanwhile, their small changes can lead to dynamic changes in forest soil organic carbon pool. Sugars are the main component in root exudates, while their content is very small and difficult to be determined. At present, the main determination of sugars in root exudates is qualitative analysis, but there exists no research on quantitative analysis. Under this background, this study established the HPIC chromatographic with GC-MS chromatographic for identification of trace sugars in root exudates. There was no interference in the baseline separation of HPIC chromatography. The sugars identification methods displayed a good linear relationship at 0.5-40.0 µg/mL, and the detection limit was 0.1 µg/ml. Due to the high accuracy, lower limit, higher sensitivity, and better reliability, this method can provide accurate data for the identification of trace sugars.

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“…The soil community structure changed from a fungal type to a bacterial type; this may improve the structure and function of the soil microbial flora [39,40] and may stimulate the proliferation of beneficial bacteria such as Bacillus and Streptomyces (Figures 2a and 4f). In a previous report, colony multiplication drove interactions among the soil microflora, reduced the number of harmful Fusarium, and effectively controlled the occurrence of soil-borne diseases [41]. Trichoderma has also shown a variety of positive effects on plant growth, resilience, and yield [42,43].…”

Section: Discussionmentioning

confidence: 96%

“…Root exudates are the bridge between plants, soil, and microbes and play an important role in the interaction between plants and the environment [49]. The type and quantity of root exudates determine the type and quantity of rhizosphere microorganisms [41,50], and rhizosphere microorganisms in turn affect the production of root exudates [41]. Root exudates of different crops can regulate different aspects of the rhizosphere microbial community [51].…”

Section: Discussionmentioning

confidence: 99%

Effects of Trichoderma asperellum 6S-2 on Apple Tree Growth and Replanted Soil Microbial Environment

Wang

Zhang

Mao

et al. 2022

JoF

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Trichoderma asperellum strain 6S-2 with biocontrol effects and potential growth-promoting properties was made into a fungal fertilizer for the prevention of apple replant disease (ARD). 6S-2 fertilizer not only promoted the growth of Malus hupehensis Rehd seedlings in greenhouse and pot experiments, but also increased the branch elongation growth of young apple trees. The soil microbial community structure changed significantly after the application of 6S-2 fertilizer: the relative abundance of Trichoderma increased significantly, the relative abundance of Fusarium (especially the gene copy numbers of four Fusarium species) and Cryptococcus decreased, and the relative abundance of Bacillus and Streptomyces increased. The bacteria/fungi and soil enzyme activities increased significantly after the application of 6S-2 fertilizer. The relative contents of alkenes, ethyl ethers, and citrullines increased in root exudates of M. hupehensis Rehd treated with 6S-2 fertilizer and were positively correlated with the abundance of Trichoderma. The relative contents of aldehydes, nitriles, and naphthalenes decreased, and they were positively correlated with the relative abundance of Fusarium. In addition, levels of ammonium nitrogen (NH4-N), nitrate nitrogen (NO3-N), available phosphorus (AP), available potassium (AK), organic matter (SOM), and pH in rhizosphere soil were also significantly related to changes in the microbial community structure. In summary, the application of 6S-2 fertilizer was effective in alleviating some aspects of ARD by promoting plant growth and optimizing the soil microbial community structure.

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Root exudates influence chemotaxis and colonization of diverse plant growth promoting rhizobacteria in the pigeon pea – maize intercropping system

Cited by 54 publications

References 55 publications

Effects of wheat root exudates on bacterial communities in the rhizosphere of watermelon

Effects of wheat root exudates on bacterial communities in the rhizosphere of watermelon

Identification of sugars in root exudates of Fraxinus mandschurica

Effects of Trichoderma asperellum 6S-2 on Apple Tree Growth and Replanted Soil Microbial Environment

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