The rhizosphere is the zone of the soil which surrounds the root. Compared to soil in general, the rhizosphere is characterized by intense microbial activity and growth stimulated by biologically active chemicals released by roots (Hiltner 1904, Lynch and Whipps, 1990). The process of releasing these compounds has been called rhizodeposition, which represents a significant energy loss for plants (Marschner 1995). On average, between 30 and 60% of net assimilated carbon is allocated to the roots of annual species (Lynch and Whipps 1990, Marschner 1995). Of this carbon, about 5-21% of the total part can be released as root exudates into the rhizosphere environment (Badri 2009, Jones et. al. 2011, Badri et at. 2013a Badri et at. 2013b ). The root apex has been shown to be the predominant site of exudation and secretion in healthy young plants, clearly separated from older tissues in terms of metabolic imprints (Bowen 1979). Root exudates play an important role in enhancing ecological suitability in the rhizosphere environment, particularly soil-root contact, affecting soil physical and chemical properties, mediating chemical signaling and establishing positive and negative interactions on the root-root. , root-insect and root-microbe interactions in the immediate vicinity of roots (Eilers et al., 2010; Shi et. al. 2011b). Additionally, exudation of these compounds increases nutrient absorption and improves soil aggregation stabilization (Nelson and Mele, 2007, Bais et. al. 2006, Repley et. al. 2008, Vogan et. al 2011). Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get an original essay Therefore, the nature and relative abundance of these compounds, their performance and regulation constitute a major area of ​​interest in root biology research. However, a more complete view of the composition of metabolic diversity is being significantly elucidated thanks to recent advances in metabolomics and the development of non-destructive sampling techniques (Bakker et. al. 2012, Chaparro 2013a, Nicole and Harro 2016). At the same time, genes and biosynthetic pathways also contribute to enriching knowledge about the root exudation process, which could open up prospects for practical application in agriculture and plant protection (Liu et. al. 2009, Ishimaru et al. components of exudates found in the literature, most of which are primarily low molecular weight (LMW) carbon compounds, consisting primarily of carboxylic acids, amino acids, amides, sugars, phenolic compounds, phytosiderophores, flavonoids, as well as a set of secondary metabolites represent a large part of the diversity of root exudates (Cesco et. al. 2010, 2012, Phillips et. al. 2012). Few reports have shown the qualitative and quantitative proportional contribution of different classes of compounds to total root exudation (Azaizeh et. al. 1995). Generally, the concentration of organic acids in roots is usually about 10-20 mM, which is 1-4% of the total dry matter, and the concentration of sugars is about 1-4% of total dry matter. 90 mM (Jones, 1998, Farrar et al. 2003). Schneckenberger (2008) showed that the concentration of organic compounds ranging from 0.1 to 10 mM reflects carbon concentrations in natural soil solutions (Owen and Jones, 2001). However, concentrations of LMW carbon compounds can be increased in rooted soil (van Hees et. al. 2005). The release of organic matter has been shown to include.