Agronomic and environmental aspects of diazotrophic bacteria in rice fields

作者：Pittol Michele^*; Durso Lisa; Valiati Victor Hugo; Fiuza Lidia Mariana

来源：Annals of Microbiology, 2016, 66(2): 511-527.

DOI：10.1007/s13213-015-1154-6

• Microbial community
• Biofertilizer
• Paddies
• Nitrogen fixation

This article provides an overview of the free-living and plant-associated nitrogen (N)-fixing bacterial communities in wet rice fields, with a focus on describing the elements affecting community assemblages in this waterlogged soil-plant system. Nitrogen is a crucial nutrient for rice yield and growth. Characteristics of the rice paddy ecosystem promote N-fertilizer losses, resulting in negative impacts on the environment. Public concerns on sustainable rice crop production and food security have accentuated interest in exploring biological supplementary nitrogen sources. Biological N-fixation is a significant source of the nitrogen in agroecosystems. The nitrogen requirement of rice crops can be partly remedied by managing and promoting the activities of N-fixing microorganisms. These changes are leading towards a cleaner approach that maintains sustainability while simultaneously improving crop production targets. The use of N-fixing microorganisms as biofertilizers and the factors driving the success of this technology in wet rice paddies are also discussed.

• 出版日期2016-6