Microbial enhancement of plant nutrient acquisition

Singh, Sunil Kumar; Wu, Xiao‐Xuan; Shao, Chunlin; Zhang, Huiming

doi:10.1007/s44154-021-00027-w

Cited by 56 publications

(38 citation statements)

References 124 publications

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“…This may happen because their cells are much more numerous than those of plants, and their genome is also commonly defined as the second genome of the plant or its microbiome [ 17 ]. These microorganisms interact positively with the plant in the rhizosphere, enhancing nutrient availability in the soil, nutrient uptake and nutrient assimilation [ 18 ]. In fact, they are not only able to carry out atmospheric nitrogen fixation (specifically PGPB) and synthesis of metabolites like amides or phytohormones exportable to plants, but they can play a role in the decomposition of organic matter, solubilization of insoluble P-containing minerals and uptake of water, nutrients and trace elements and their delivery into the roots [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

The Effects of the Microbial Biostimulants Approved by EU Regulation 2019/1009 on Yield and Quality of Vegetable Crops

Fusco

Nicastro

Rouphael

et al. 2022

Foods

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The use of microbial biostimulants such as plant growth-promoting rhizobacteria (PGPB) and arbuscular mycorrhizal fungi (AMF) has gained popularity in recent years as a sustainable approach to boost yield as well as the quality of produce. The beneficial effects of microbial biostimulants have been reported numerous times. However, information is missing concerning quantitative assessment of the overall impact of microbial biostimulants on the yield and quality of vegetable crops. Here we provide for the first time a comprehensive, semi-systematic review of the effects of microbial biostimulants allowed by Regulation (EU) 2019/1009, including microorganisms belonging to the AMF (phylum Glomeromycota), or to Azospirillum, Azotobacter and Rhizobium genera, on vegetable crops’ quality and yield, with rigorous inclusion and exclusion criteria based on the PRISMA method. We identified, selected and critically evaluated all the relevant research studies from 2010 onward in order to provide a critical appraisal of the most recent findings related to these EU-allowed microbial biostimulants and their effects on vegetable crops’ quality and yield. Moreover, we highlighted which vegetable crops received more beneficial effects from specific microbial biostimulants and the protocols employed for plant inoculation. Our study is intended to draw more attention from the scientific community to this important instrument to produce nutrient-dense vegetables in a sustainable manner. Finally, our semi-systematic review provides important microbial biostimulant application guidelines and gives extension specialists and vegetable growers insights into achieving an additional benefit from microbial biostimulant application.

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Section: Introductionmentioning

confidence: 99%

The Effects of the Microbial Biostimulants Approved by EU Regulation 2019/1009 on Yield and Quality of Vegetable Crops

Fusco

Nicastro

Rouphael

et al. 2022

Foods

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“…In a recent report [ 17 ], the GMV component diacetyl (also known as 2,3-butanedione), was shown to induce SA-mediated defense in phosphate (Pi)-deficient plants; whereas in Pi-sufficient plants, diacetyl partially suppresses plant immunity, especially microbial induction of ROS burst. This phenomenon indicates that Pi-deficient plants activate a defense to deter the otherwise (under Pi-sufficient conditions) beneficial rhizobacteria, which compete against the plants for the limited Pi sources in the rhizosphere [ 17 , 25 , 26 ]. Similarly, the relation between A. thaliana and the fungus Colletotrichum tofieldiae also showed Pi-dependent transition from mutualism to defense [ 27 ], although it remains unclear whether in this case plant defense is triggered by certain non-pathogenic factors.…”

Section: Discussionmentioning

confidence: 99%

Plant latent defense response to microbial non-pathogenic factors antagonizes compatibility

Chen

et al. 2022

National Science Review

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Unlike microbe-associated molecular patterns (MAMPs) that are readily targeted by host immunity, microbial non-pathogenic factors (NPFs) appear negligible as they do not elicit defense. Little is known about whether and how NPFs may be monitored by hosts to control compatibility. Herein a forward genetic screen isolated an Arabidopsis mutant with a loss of plant-rhizobacteria mutualism, leading to the disclosure of plant latent defense response (LDR) to NPFs. The activation of LDR in the mutant, named rol1 for regulator of LDR 1, is triggered by several non-pathogenic volatile organic compounds (VOCs) and antagonizes plant compatibility with the beneficial bacterium Bacillus amyloliquefaciens GB03. The activation of LDR in rol1 is mediated through the prokaryotic pathway of chloroplastic lipid biosynthesis. The rol1 root microbiome showed reduced proportion of the Bacillaece family. We propose that, in parallel to the forefront immunity to MAMPs, LDR to certain NPFs provides a hidden layer of defense for controlling compatibility with commensal or beneficial microbes.

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“…Photosynthetic capacity Desertification (Qiu et al, 2018) Water (Qiu et al, 2018) P and N soil availability (Ai et al, 2017) AM fungi (Moustakas et al, 2020;Balestrini et al, 2020) Micro-and macro-elements Soil texture (Callaham and Stanturf, 2021) NPK and SOM (Schjoerring et al, 2019); pH, redox potentials (Mohiuddin et al, 2022); electric conductivity (Shaaban et al, 2016) Microbiota diversity (Singh et al, 2022); AM fungi (Lanfranco et al, 2018) Pathogenesis Structural heterogeneity and water/oxygen availability (Otten and Gilligan 2006); moisture and clay content (Döring et al, 2020) NPK, organic matter content and cation exchange capacity (van Agtmaal et al, 2018) AM fungi (Vannini et al, 2021); microbiota (Chialva et al, 2018;Chialva et al, 2022)…”

Section: Plant Health Indicator Physical Chemical Biologicalmentioning

confidence: 99%

Unearthing soil-plant-microbiota crosstalk: Looking back to move forward

et al. 2023

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The soil is vital for life on Earth and its biodiversity. However, being a non-renewable and threatened resource, preserving soil quality is crucial to maintain a range of ecosystem services critical to ecological balances, food production and human health. In an agricultural context, soil quality is often perceived as the ability to support field production, and thus soil quality and fertility are strictly interconnected. The concept of, as well as the ways to assess, soil fertility has undergone big changes over the years. Crop performance has been historically used as an indicator for soil quality and fertility. Then, analysis of a range of physico-chemical parameters has been used to routinely assess soil quality. Today it is becoming evident that soil quality must be evaluated by combining parameters that refer both to the physico-chemical and the biological levels. However, it can be challenging to find adequate indexes for evaluating soil quality that are both predictive and easy to measure in situ. An ideal soil quality assessment method should be flexible, sensitive enough to detect changes in soil functions, management and climate, and should allow comparability among sites. In this review, we discuss the current status of soil quality indicators and existing databases of harmonized, open-access topsoil data. We also explore the connections between soil biotic and abiotic features and crop performance in an agricultural context. Finally, based on current knowledge and technical advancements, we argue that the use of plant health traits represents a powerful way to assess soil physico-chemical and biological properties. These plant health parameters can serve as proxies for different soil features that characterize soil quality both at the physico-chemical and at the microbiological level, including soil quality, fertility and composition of soil microbial communities.

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Microbial enhancement of plant nutrient acquisition

Cited by 56 publications

References 124 publications

The Effects of the Microbial Biostimulants Approved by EU Regulation 2019/1009 on Yield and Quality of Vegetable Crops

The Effects of the Microbial Biostimulants Approved by EU Regulation 2019/1009 on Yield and Quality of Vegetable Crops

Plant latent defense response to microbial non-pathogenic factors antagonizes compatibility

Unearthing soil-plant-microbiota crosstalk: Looking back to move forward

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