The Role of Soil Microbes in Promoting Plant Growth

Li, Sheng; Peng, Mugen; Liu, Zhi; Shah, Syed Sadaqat

doi:10.5376/mmr.2017.07.0004

Cited by 10 publications

(6 citation statements)

References 36 publications

(36 reference statements)

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“…In addition, loss through runoff may also lead to a decrease in soil nutrients. Soil pH is an important indicator reflecting soil quality, and its value indicates the degree of acidity and alkalinity of the soil and its effect on the survival of plants and animals (Li et al, 2017). In this study, soil pH decreased in the course of succession, which was not in line with some previous studies that found no correlation between soil pH and the distance from the glacier (Zeng et al, 2016;Strauss et al, 2009).…”

Section: Soil Properties At Different Successional Stagescontrasting

confidence: 78%

Variation in the nitrous oxide reductase gene (nosZ)-denitrifying bacterial community in different primary succession stages in the Hailuogou Glacier retreat area, China

Bai

Huang

Zhou

et al. 2019

Preprint

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Background: The Hailuogou Glacier in the Gongga Mountain region (SW China), on the southeastern edge of the Tibetan Plateau, is well known for its low-elevation modern glaciers. Since the end of the Little Ice Age (LIA), the Hailuogou Glacier has retreated continuously due to global warming, primary vegetation succession and soil chronosequence have developed in this retreat area. The retreated area of Hailuogou Glacier has not been strongly disturbed by human activities, thus it is an ideal models for exploring the biological colonization of nitrogen in the primary successional stages of ecosystem. The nosZ gene encodes the catalytic center of nitrous oxide reductase and is an ideal molecular marker in studying the variation in the denitrifying bacterial community. Methods: Soil properties as well as abundance and composition of the denitrifying bacterial community were determined via chemical analysis, quantitative polymerase chain reaction (qPCR), and terminal restriction fragment length polymorphism (T-RFLP), respectively. The relationships between the nosZ denitrifying bacterial community and soil properties were determined using redundancy analysis (RDA). Soil properties, potential denitrify activity (PDA), and the nitrous oxide reductase gene (nosZ)-denitrifying bacterial communities significantly differed among successional stages. Results: Soil properties, potential denitrify activity (PDA), and the nitrous oxide reductase gene (nosZ)-denitrifying bacterial communities significantly differed among successional stages. Soil pH in the topsoil decreased from 8.42 to 7.19 in the course of primary succession, while soil organic carbon (SOC) and total nitrogen (TN) gradually increased with primary succession. Available phosphorus (AP) and available potassium (AK), as well as potential denitrify activity (PDA), increased gradually and peaked at the 40-year-old site. The abundance of the nosZ denitrifying bacterial community followed a similar trend. The variation in the denitrifying community composition was complex; Mesorhizobium dominated the soil in the early successional stages (0-20 years) and in the mature phase (60 years), with a relative abundance greater than 55%. Brachybacterium was increased in the 40-year-old site, with a relative abundance of 62.74%, while Azospirillum dominated the early successional stages (0-20 years). Redundancy analysis (RDA) showed that the nosZ denitrifying bacterial community correlated with soil available phosphorus and available potassium levels (P < 0.01).

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Section: Soil Properties At Different Successional Stagescontrasting

confidence: 78%

Variation in the nitrous oxide reductase gene (nosZ)-denitrifying bacterial community in different primary succession stages in the Hailuogou Glacier retreat area, China

Bai

Huang

Zhou

et al. 2019

Preprint

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“…The soil microbiota provides the decomposition of the complex organic compounds into the nutrients available for plants (Li et al, 2017b). Consequently, the study of microbiocoenosis allows to understand the direction of microbiological processes and to predict changes in soil conditions, which can be used to create and to improve crop cultivation techniques.…”

Section: Resultsmentioning

confidence: 99%

Comparative analysis of agrochemical, allelopathic and microbiological characteristics of the soil environment for Actinidia arguta (Siebold et Zucc.) Planch. ex Miq. cultivated in Ukraine and two provinces of China

et al. 2020

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Objective – to evaluate agrochemical, allelopathic and microbiological characteristics of the soil environment for Actinidia arguta (Siebold et Zucc.) Planch. ex Miq. plants cultivated in Ukraine and two provinces of China. Material and methods. The rhizosphere soil was sampled at 0–15 cm layer under A. arguta plants in the stage of fruit ripening in Ukraine (Kyiv city: North of Ukraine, Forest-Steppe zone, a temperate continental climate) and two provinces of China (Shandong: East China, a monsoon temperate zone; and Heilongjiang: Northeast China, continental monsoon climate). The concentrations of carbon, available forms of macro- and micronutrients, phenolic compounds in the soil samples were determined. pH and redox potential of soil were measured. Soil phytotoxicity was studied by direct bioassay method on cress (Lepidium sativum L.) root growth. Microbiological analyses of soil samples were conducted. Results. The dissimilarities in the concentrations of carbon, macro- and micronutrients in the examined soil samples were shown. The domination of reduction conditions (Eh < 400 mV) in the soils under A. аrguta points the deceleration in the humification processes, as well as the presence of the mobile forms of organic compounds with the allelopathic properties. The redox potential decreased with the increase of pH values. This reflects the intensifying of reduction processes. The soil phytotoxicity under A. аrguta reached 20–70% compared with the control. This is obviously due to the accumulation of phenolic compounds as well as iron and manganese. The relationship between pH, the phytotoxicity and the abundance of the main taxonomical and ecological trophic groups of microbiota in soils under A. аrguta was ascertained. Conclusions. Calcic Luvisols from the M.M. Gryshko National Botanical Garden of the NAS of Ukraine (Kyiv city, Ukraine) and Luvic Chernozems from Jiamusi (Heilongjiang province, China) were determined to be the most favorable for A. arguta cultivation. Salic Solonetz from Harbin (Heilongjiang province, China) and Haplic Luvisols from Linyi (Shandong province, China) had the least suitable soil conditions for A. arguta plants.

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“…In pathogens, auxin is linked to its virulence. One good example of auxin’s role in virulence has been studied in the Agrobacterium tumefaciens where the expression of tumors in plants depends on the secretion of IAA [ 207 , 208 ]. As tryptophan is required for auxin production, aminocyclopropane-1-carboxylic acid [ACC] is needed for the production of ethylene and microbial growth.…”

Section: Functions Of Rhizosphere Consortiamentioning

confidence: 99%

Plant–Microbe Interaction: Aboveground to Belowground, from the Good to the Bad

Nadarajah

Rahman

2021

IJMS

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Soil health and fertility issues are constantly addressed in the agricultural industry. Through the continuous and prolonged use of chemical heavy agricultural systems, most agricultural lands have been impacted, resulting in plateaued or reduced productivity. As such, to invigorate the agricultural industry, we would have to resort to alternative practices that will restore soil health and fertility. Therefore, in recent decades, studies have been directed towards taking a Magellan voyage of the soil rhizosphere region, to identify the diversity, density, and microbial population structure of the soil, and predict possible ways to restore soil health. Microbes that inhabit this region possess niche functions, such as the stimulation or promotion of plant growth, disease suppression, management of toxicity, and the cycling and utilization of nutrients. Therefore, studies should be conducted to identify microbes or groups of organisms that have assigned niche functions. Based on the above, this article reviews the aboveground and below-ground microbiomes, their roles in plant immunity, physiological functions, and challenges and tools available in studying these organisms. The information collected over the years may contribute toward future applications, and in designing sustainable agriculture.

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The Role of Soil Microbes in Promoting Plant Growth

Cited by 10 publications

References 36 publications

Variation in the nitrous oxide reductase gene (nosZ)-denitrifying bacterial community in different primary succession stages in the Hailuogou Glacier retreat area, China

Variation in the nitrous oxide reductase gene (nosZ)-denitrifying bacterial community in different primary succession stages in the Hailuogou Glacier retreat area, China

Comparative analysis of agrochemical, allelopathic and microbiological characteristics of the soil environment for Actinidia arguta (Siebold et Zucc.) Planch. ex Miq. cultivated in Ukraine and two provinces of China

Plant–Microbe Interaction: Aboveground to Belowground, from the Good to the Bad

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