Characteristics of root‐associated bacterial community and nitrogen biochemical properties of two<i>Japonica</i>rice cultivars with different yields

Dong, Hangyu; Sun, Hui; Jiang, Linlin; Ma, Dianrong; Su, Fan

doi:10.1002/fes3.357

Food and Energy Security

2021

DOI: 10.1002/fes3.357

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Characteristics of root‐associated bacterial community and nitrogen biochemical properties of twoJaponicarice cultivars with different yields

Hangyu Dong

Hui Sun

Linlin Jiang

et al.

Abstract: This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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2024

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Harnessing synthetic microbial communities with nitrogen-fixing activity to promote rice growth

Tran,

Nguyen,

Hoang

et al. 2024

Open Agriculture

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Improving the biological nitrogen fixation of rhizosphere bacteria in rice is expected to improve plant growth and productivity. Most studies have focused on the application of a single N2-fixing bacterium on rice plants. Little is known about the beneficial impacts of a bacterial consortium, which is known as the microbial synthetic community (SynCom) on rice growth, and the extent of the interaction with the microbial community. The study investigated the effect of a SynCom on rice growth and productivity. A SynCom consisting of three bacteria Azosprillium sp. NL1, Bradyrhizobium sp. NL2, and Azotobacter sp. NL3 was designed to increase the survival and density of root microorganisms. The microbial culture collections used for the reconstitution experiment were established using bacterium-free soil. A profound increase in bacterial root microbiota survival and density was observed in plants inoculated with either mono- or multi-synthetic microbial consortia. SynCom is essential for rice plant growth by improving shoot ramification and root development. The results showed that SynCom could increase the total root nitrogen-fixing (%Ndfa) value by 51.6%, with Azotobacter sp. NL3 being the most dominant. High levels of indole acetic acid production in the range of 0.65–0.8 ng per g root were observed in Azosprillium sp. NL1 and Azotobacter sp. NL3. This indicates Azotobacter sp. NL3 is a nitrogen-fixing rhizosphere bacterium that is dominant in rice-amended soils. These results support the early application of the designed SynCom as a feasible strategy for the induction of nitrogen fixation, suggesting a role for earlier effects on rhizosphere colonization and tillering of plants.

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Harnessing synthetic microbial communities with nitrogen-fixing activity to promote rice growth

Tran,

Nguyen,

Hoang

et al. 2024

Open Agriculture

View full text Add to dashboard Cite

show abstract

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Characteristics of root‐associated bacterial community and nitrogen biochemical properties of twoJaponicarice cultivars with different yields

Abstract: This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 1 publication

References 111 publications

Harnessing synthetic microbial communities with nitrogen-fixing activity to promote rice growth

Harnessing synthetic microbial communities with nitrogen-fixing activity to promote rice growth

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