Roles of microbes in supporting sustainable rice production using the system of rice intensification

Doni, Febri; Mispan, Muhamad Shakirin; Suhaimi, Nurul Shamsinah Mohd; Ishak, Nazri; Uphoff, Norman

doi:10.1007/s00253-019-09879-9

Cited by 30 publications

(21 citation statements)

References 112 publications

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“…SL2 compared to their cultivation with conventional methods plus inoculation with T. asperellum (Doni et al, 2017(Doni et al, , 2019b. In further research, it was determined that there was greater net photosynthesis, more internal CO 2 concentration, greater water use efficiency, plant height, tiller number, root length, and fresh root weight in rice plants that were inoculated with T. asperellum compared to uninoculated plants (Doni et al, 2019b). This research confirmed that EPH effects can be heightened by the use of conducive crop management practices.…”

Section: Enhancing Microbial Endowments With Changes In Crop and Soilmentioning

confidence: 60%

“…Research in Malaysia found similar results with a significant increase in seedling growth, germination rate, seed vigor index, and leaf chlorophyll content when rice plants grown under SRI management were inoculated with T. asperellum sp. SL2 compared to their cultivation with conventional methods plus inoculation with T. asperellum (Doni et al, 2017(Doni et al, , 2019b. In further research, it was determined that there was greater net photosynthesis, more internal CO 2 concentration, greater water use efficiency, plant height, tiller number, root length, and fresh root weight in rice plants that were inoculated with T. asperellum compared to uninoculated plants (Doni et al, 2019b).…”

Section: Enhancing Microbial Endowments With Changes In Crop and Soilmentioning

confidence: 99%

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Benefits to Plant Health and Productivity From Enhancing Plant Microbial Symbionts

et al. 2021

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Plants exist in close association with uncountable numbers of microorganisms around, on, and within them. Some of these endophytically colonize plant roots. The colonization of roots by certain symbiotic strains of plant-associated bacteria and fungi results in these plants performing better than plants whose roots are colonized by only the wild populations of microbes. We consider here crop plants whose roots are inhabited by introduced organisms, referring to them as Enhanced Plant Holobionts (EPHs). EPHs frequently exhibit resistance to specific plant diseases and pests (biotic stresses); resistance to abiotic stresses such as drought, cold, salinity, and flooding; enhanced nutrient acquisition and nutrient use efficiency; increased photosynthetic capability; and enhanced ability to maintain efficient internal cellular functioning. The microbes described here generate effects in part through their production of Symbiont-Associated Molecular Patterns (SAMPs) that interact with receptors in plant cell membranes. Such interaction results in the transduction of systemic signals that cause plant-wide changes in the plants’ gene expression and physiology. EPH effects arise not only from plant-microbe interactions, but also from microbe-microbe interactions like competition, mycoparasitism, and antibiotic production. When root and shoot growth are enhanced as a consequence of these root endophytes, this increases the yield from EPH plants. An additional benefit from growing larger root systems and having greater photosynthetic capability is greater sequestration of atmospheric CO2. This is transferred to roots where sequestered C, through exudation or root decomposition, becomes part of the total soil carbon, which reduces global warming potential in the atmosphere. Forming EPHs requires selection and introduction of appropriate strains of microorganisms, with EPH performance affected also by the delivery and management practices.

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Section: Enhancing Microbial Endowments With Changes In Crop and Soilmentioning

confidence: 60%

Section: Enhancing Microbial Endowments With Changes In Crop and Soilmentioning

confidence: 99%

Benefits to Plant Health and Productivity From Enhancing Plant Microbial Symbionts

et al. 2021

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“…In order to support soil functions and maintain or even increase crop yields, combinations of organic and more mineral green fertilizers (like green manure) may bear this potential by providing an easily accessible fertilizer with long-lasting effects on soil quality (Tahat et al 2020). However, the role of microbial diversity and functioning in these mixed fertilizer trials needs more exploration, given that microorganisms are crucial for a sustainable agricultural system, and constitute plant growth-promoting bacteria (PGPB) and fungi (PGPF) for example nitrogen-fixers (diazotrophs) (Hossain et al 2017;Srinivasarao and Manjunath 2017;Doni et al 2019) which can be exploited to increase crop production. Yet, systematic studies exploring the interplay between fertilizer composition, GHG emissions, soil microbes, and crop yields in agricultural soils are scarce and incomplete give the current knowledge on soil microbial communities.…”

Section: Introductionmentioning

confidence: 99%

Steering microbiomes by organic amendments towards climate-smart agricultural soils

Brenzinger

Costa

et al. 2021

Biol Fertil Soils

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We steered the soil microbiome via applications of organic residues (mix of cover crop residues, sewage sludge + compost, and digestate + compost) to enhance multiple ecosystem services in line with climate-smart agriculture. Our result highlights the potential to reduce greenhouse gases (GHG) emissions from agricultural soils by the application of specific organic amendments (especially digestate + compost). Unexpectedly, also the addition of mineral fertilizer in our mesocosms led to similar combined GHG emissions than one of the specific organic amendments. However, the application of organic amendments has the potential to increase soil C, which is not the case when using mineral fertilizer. While GHG emissions from cover crop residues were significantly higher compared to mineral fertilizer and the other organic amendments, crop growth was promoted. Furthermore, all organic amendments induced a shift in the diversity and abundances of key microbial groups. We show that organic amendments have the potential to not only lower GHG emissions by modifying the microbial community abundance and composition, but also favour crop growth-promoting microorganisms. This modulation of the microbial community by organic amendments bears the potential to turn soils into more climate-smart soils in comparison to the more conventional use of mineral fertilizers.

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“…Agronomic practices that permit high performance levels of EPHs are also important as reviewed (Doni et al 13). These organisms after colonizing plant roots all produce symbiont‐associated molecular patterns (SAMPs) that induce beneficial changes in plant physiology and performance.…”

Section: Introductionmentioning

confidence: 99%

Endophytic strains of Trichoderma increase plants’ photosynthetic capability

et al. 2019

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The world faces two enormous challenges that can be met, at least in part and at low cost, by making certain changes in agricultural practices. There is need to produce enough food and fibre for a growing population in the face of adverse climatic trends, and to remove greenhouse gases to avert the worst consequences of global climate change. Improving photosynthetic efficiency of crop plants can help meet both challenges. Fortuitously, when crop plants’ roots are colonized by certain root endophytic fungi in the genus Trichoderma, this induces up‐regulation of genes and pigments that improve the plants’ photosynthesis. Plants under physiological or environmental stress suffer losses in their photosynthetic capability through damage to photosystems and other cellular processes caused by reactive oxygen species (ROS). But certain Trichoderma strains activate biochemical pathways that reduce ROS to less harmful molecules. This and other mechanisms described here make plants more resistant to biotic and abiotic stresses. The net effect of these fungi’s residence in plants is to induce greater shoot and root growth, increasing crop yields, which will raise future food production. Furthermore, if photosynthesis rates are increased, more CO2 will be extracted from the atmosphere, and enhanced plant root growth means that more sequestered C will be transferred to roots and stored in the soil. Reductions in global greenhouse gas levels can be accelerated by giving incentives for climate‐friendly carbon farming and carbon cap‐and‐trade programmes that reward practices transferring carbon from the atmosphere into the soil, also enhancing soil fertility and agricultural production.

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Roles of microbes in supporting sustainable rice production using the system of rice intensification

Cited by 30 publications

References 112 publications

Benefits to Plant Health and Productivity From Enhancing Plant Microbial Symbionts

Benefits to Plant Health and Productivity From Enhancing Plant Microbial Symbionts

Steering microbiomes by organic amendments towards climate-smart agricultural soils

Endophytic strains of Trichoderma increase plants’ photosynthetic capability

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