Field Crop 2024, Vol.7, No.3, 171-181 http://cropscipublisher.com/index.php/fc 171 Research Insight Open Access Role of Diazotrophic Bacteria in Promoting Sugarcane Growth and Yield AmengLi CRO Service Station, Sanya Tihitar SciTech Breeding Service Inc., Sanya, 572025, Hainan, China Corresponding email: ameng.hitar@hitar.org Field Crop, 2024, Vol.7, No.3 doi: 10.5376/fc.2024.07.0017 Received: 09 Apr., 2024 Accepted: 20 May, 2024 Published: 13 Jun., 2024 Copyright © 2024 Li, This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Preferred citation for this article: Li A., 2024, Role of diazotrophic bacteria in promoting sugarcane growth and yield, Field Crop, 7(3): 171-181 (doi: 10.5376/fc.2024.07.0017) Abstract Sugarcane cultivation plays a crucial role in the global agricultural economy, especially in tropical and subtropical regions. Diazotrophic bacteria, capable of nitrogen fixation, are significant for enhancing the growth and yield of sugarcane. This study aims to explore the intricate interactions between diazotrophic bacteria and sugarcane, highlighting their impact on plant growth, yield, and agronomic practices. Various types of diazotrophic bacteria and their nitrogen fixation mechanisms are discussed, providing a comprehensive overview of their functions. The colonization and symbiosis processes, along with other plant growth-promoting activities, are examined to understand their contributions to sugarcane health. This study also delves into the enhancements in nutrient uptake, root development, biomass, and overall plant vigor resulting from these interactions. Statistical data on yield increases and improvements in sugarcane juice quality underscore the economic benefits of employing diazotrophic bacteria. Agronomic practices such as soil management, irrigation, crop rotation, and the use of biofertilizers are analyzed for their influence on diazotrophic activity. Advances in genetic engineering, inoculation techniques, and molecular approaches are highlighted as significant strides in research and technology. Despite these advancements, challenges to widespread adoption remain, necessitating further research and policy support. In summary, this study underscores the pivotal role of diazotrophic bacteria in sustainable sugarcane agriculture, advocating for continued research and policy initiatives to harness their full potential. Keywords Diazotrophic bacteria; Sugarcane cultivation; Nitrogen fixation; Plant growth promotion; Sustainable agriculture 1 Introduction Sugarcane (Saccharum officinarum L.) is a vital crop with significant economic, social, and environmental importance, particularly in countries like Brazil, which is the largest sugar producer and the second-largest bioethanol producer globally (Schultz et al., 2017). The cultivation of sugarcane is typically carried out in soils with varying levels of natural fertility, often requiring substantial nitrogen fertilization to achieve optimal growth and yield (Antunes et al., 2022). However, the high cost and environmental impact of chemical fertilizers have driven the search for sustainable agricultural practices, including the use of plant growth-promoting bacteria (PGPB) (Kruasuwan and Thamchaipenet, 2016). Diazotrophic bacteria, which are capable of fixing atmospheric nitrogen, play a crucial role in promoting plant growth and enhancing crop yields. These bacteria, such as GluconAcetobacter diazotrophicus and Herbaspirillum seropedicae, can colonize sugarcane roots and tissues, providing a natural source of nitrogen through biological nitrogen fixation (BNF) (Sevilla et al., 2001; Lery et al., 2011). In addition to nitrogen fixation, diazotrophic bacteria produce plant growth-promoting substances like indole-3-acetic acid (IAA), which further stimulate plant growth. Studies have shown that inoculation with diazotrophic bacteria can significantly increase sugarcane yield, improve nutrient accumulation, and enhance the overall health of the plants (Renan et al., 2016; Schultz et al., 2017). This study explores the role of diazotrophic bacteria in promoting sugarcane growth and yield. This includes evaluating the efficiency of different diazotrophic bacterial strains and their combinations in enhancing sugarcane productivity. By synthesizing findings from multiple studies, this study provides a comprehensive understanding of the potential of diazotrophic bacteria to improve sugarcane cultivation practices, thereby contributing to more sustainable and environmentally friendly agricultural systems. Investigating the mechanisms through which these bacteria promote plant growth, including nitrogen fixation and the production of growth-promoting substances, is
RkJQdWJsaXNoZXIy MjQ4ODY0NQ==