Bacillus subtilis QST713 and cellulose amendment enhance phosphorus uptake while improving zinc biofortification in wheat

Moreno-Lora, Aurora; Recena, Ramiro; Delgado, Antonio

doi:10.1016/j.apsoil.2019.04.013

Cited by 21 publications

(13 citation statements)

References 47 publications

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“…Pseudomonas has been shown to promote plant growth as well as inhibit pathogenic fungi (Gray & Smith, 2005; Melo et al ., 2016). Burkholderia and Bacillus can be involved in phosphate solubilisation (Dimkpa et al ., 2009; Zhao et al ., 2014) and symbiotic associations with wheat (Shaharoona et al ., 2007; Moreno-Lora et al ., 2019). Finally, Massilia has been shown to correlate with an increase in plant biomass for alfalfa and soybean (Xiao et al ., 2017).…”

Section: Discussionmentioning

confidence: 99%

Positive effects of crop diversity on productivity driven by changes in soil microbial composition

Stefan

Hartmann

Six

et al. 2020

Preprint

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SummaryIntensive agriculture has major negative impacts on ecosystem diversity and functioning, including that of soils. The associated reduction of soil biodiversity and essential soil functions, such as nutrient cycling, can restrict plant growth and crop yield. By increasing plant diversity in agricultural systems, intercropping could be a promising way to foster soil microbial diversity and functioning. However, plant–microbe interactions and the extent to which they influence crop yield under field conditions are still poorly understood. In this study, we performed an extensive intercropping experiment using eight crop species and 40 different crop mixtures to investigate how crop diversity affects soil microbial diversity and functions, and whether these changes subsequently affect crop yield. Experiments were carried out in mesocosms under natural conditions in Switzerland and in Spain, two countries with drastically different soils and climate, and our crop communities included either one, two or four species. We sampled and sequenced soil microbial DNA to assess soil microbial diversity, and measured soil basal respiration as a proxy for soil activity. Results indicate that in Switzerland, increasing crop diversity led to shifts in soil microbial community composition, and in particular to an increase of several plant-growth promoting microbes, such as members of the bacterial phylum Actinobacteria. These shifts in community composition subsequently led to a 15 and 35% increase in crop yield in 2 and 4-species mixtures, respectively. This suggests that the positive effects of crop diversity on crop productivity can partially be explained by changes in soil microbial composition. However, the effects of crop diversity on soil microbes were relatively small compared to the effects of abiotic factors such as fertilization (3 times larger) or soil moisture (3 times larger). Furthermore, these processes were context-dependent: in Spain, where soil resources were limited, soil microbial communities did not respond to crop diversity, and their effect on crop yield was less strong. This research highlights the potential beneficial role of soil microbial communities in intercropping systems, while also reflecting on the relative importance of crop diversity compared to abiotic drivers of microbiomes, thereby emphasizing the context-dependence of crop–microbe relationships.

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Section: Discussionmentioning

confidence: 99%

Positive effects of crop diversity on productivity driven by changes in soil microbial composition

Stefan

Hartmann

Six

et al. 2020

Preprint

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“…A wide range of ZSB, including both groups such as gram-positive and gram-negative bacteria, demonstrated their competence in biofortification. Bacillus, in particular, showed a profound role in Zn biofortification in numerous food crops (8,12,38,55,58,(167)(168)(169)(170)(171)(172). The important crops such as maize (38,54,58,173,174), rice (59,60,171,175,176), and wheat (8,11,31,32,167,177) have been studied extensively for Zn biofortification in response to ZSB inoculants as the grain parts from these crops offer the most important staple foods on a broad scale worldwide.…”

Section: Scenario Of Microbial Inoculants In Zn Exemplification In Plantsmentioning

confidence: 99%

Cross Talk Between Zinc-Solubilizing Bacteria and Plants: A Short Tale of Bacterial-Assisted Zinc Biofortification

2022

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A contemporary approach to bacterially mediated zinc (Zn) biofortification offers a new dimension in the crop improvement program with better Zn uptake in plants to curb Zn malnutrition. The implication of Zn solubilizing bacteria (ZSB) represents an inexpensive and optional strategy for Zn biofortification, with an ultimate green solution to enlivening sustainable agriculture. ZSB dwelling in the rhizospheric hub or internal plant tissues shows their competence to solubilize Zn via a variety of strategies. The admirable method is the deposition of organic acids (OAs), which acidify the surrounding soil environment. The secretion of siderophores as a metal chelating molecule, chelating ligands, and the manifestation of an oxidative–reductive system on the bacterial cell membrane are further tactics of bacterially mediated Zn solubilization. The inoculation of plants with ZSB is probably a more effective tactic for enhanced Zn translocation in various comestible plant parts. ZSB with plant growth-enhancing properties can be used as bioelicitors for sustainable plant growth via the different approaches that are crucial for plant health and its productivity. This article provides an overview of the functional properties of ZSB-mediated Zn localization in the edible portions of food crops and provides an impetus to explore such plant probiotics as natural biofortification agents.

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“…Pseudomonas has been shown to promote plant growth as well as inhibit pathogenic fungi (Gray and Smith, 2005;Melo et al, 2016). Burkholderia and Bacillus can be involved in phosphate solubilization (Dimkpa et al, 2009;Zhao et al, 2014) and symbiotic associations with wheat (Shaharoona et al, 2007;Moreno-Lora et al, 2019). Finally, Massilia has been shown to correlate with an increase in plant biomass for alfalfa and soybean (Xiao et al, 2017).…”

Section: Soil Microbes Partially Explain the Positive Effects Of Intercropping On Yield In Switzerlandmentioning

confidence: 99%

Positive Effects of Crop Diversity on Productivity Driven by Changes in Soil Microbial Composition

et al. 2021

View full text Add to dashboard Cite

Intensive agriculture has major negative impacts on ecosystem diversity and functioning, including that of soils. The associated reduction of soil biodiversity and essential soil functions, such as nutrient cycling, can restrict plant growth and crop yield. By increasing plant diversity in agricultural systems, intercropping could be a promising way to foster soil microbial diversity and functioning. However, plant–microbe interactions and the extent to which they influence crop yield under field conditions are still poorly understood. In this study, we performed an extensive intercropping experiment using eight crop species and 40 different crop mixtures to investigate how crop diversity affects soil microbial diversity and activity, and whether these changes subsequently affect crop yield. Experiments were carried out in mesocosms under natural conditions in Switzerland and in Spain, two countries with drastically different soils and climate, and our crop communities included either one, two or four species. We sampled and sequenced soil microbial DNA to assess soil microbial diversity, and measured soil basal respiration as a proxy for soil activity. Results indicate that in Switzerland, increasing crop diversity led to shifts in soil microbial community composition, and in particular to an increase of several plant-growth promoting microbes, such as members of the bacterial phylum Actinobacteria. These shifts in community composition subsequently led to a 15 and 35% increase in crop yield in 2 and 4-species mixtures, respectively. This suggests that the positive effects of crop diversity on crop productivity can partially be explained by changes in soil microbial composition. However, the effects of crop diversity on soil microbes were relatively small compared to the effects of abiotic factors such as fertilization (three times larger) or soil moisture (three times larger). Furthermore, these processes were context-dependent: in Spain, where resources were limited, soil microbial communities did not respond to crop diversity, and their effect on crop yield was less strong. This research highlights the potential beneficial role of soil microbial communities in intercropping systems, while also reflecting on the relative importance of crop diversity compared to abiotic drivers of microbiomes and emphasizing the context-dependence of crop–microbe relationships.

show abstract

Bacillus subtilis QST713 and cellulose amendment enhance phosphorus uptake while improving zinc biofortification in wheat

Cited by 21 publications

References 47 publications

Positive effects of crop diversity on productivity driven by changes in soil microbial composition

Positive effects of crop diversity on productivity driven by changes in soil microbial composition

Cross Talk Between Zinc-Solubilizing Bacteria and Plants: A Short Tale of Bacterial-Assisted Zinc Biofortification

Positive Effects of Crop Diversity on Productivity Driven by Changes in Soil Microbial Composition

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