# Genomic Insights into Two Endophytic Strains:
## 4 Discussion
Phosphate solubilization and the genes that are responsible for the solubilization and metabolism of phosphorus in usable forms are critical to growth in plants, according to [PERSON] and [PERSON], 2019, [45]. The genes that are associated with phosphorus metabolism and that are in the genome of these strains include, among others, the phosphate regulon sensor protein PhoR, the phosphate transport system regulatory protein PhoU, exopolyn phosphatase, alkaline phosphatase, the phosphate starvation-inducible protein PhoH, and the polyphosphate kinase protein. * Plant hormone-auxin biosynthesis. The presence of the tryptophan synthase alpha chain, the tryptophan synthase beta chain, phosphoribosyl anthranilate isomerase, and anthranilate phosphoribosyl transferase represents the precursors to the plant hormone auxin biosynthesis and are present in the genomes of the two endophytic strains. Auxin plays a key role in the fitness of a plant and in promoting its growth [46]. * Stress Response. The ability to cope appropriately with different stressors and responses is inherent in the genome of the two endophytic strains. Different stress response genes include aquaporin Z, betaine aldehyde dehydrogenase, the OpgC protein, the glycine betaine transporter OpuD, the ferric uptake regulation protein FUR, the organic hydroperoxide resistance protein, and the organic hydroperoxide resistance protein superoxide dismutase. These stress tolerance genes aid plants in mitigating stressful conditions and ultimately lead to plant growth enhancement [47; 48]. Furthermore, there are different biochemical and physiological mechanisms deployed by micro-organisms to achieve positive changes that lead to plant growth enhancement in plant-microbe interrelationships. The data reported in this study indicated that _Pseudomonas carris_ strain NWUBe30 and _Stenotrophomonas geniculata_ strain NWUBe21 possess plant growth-stimulating attributes that aid in the growth and development of plants. These results are aligned with reports on endophytes as plant growth-improving microbial resources for attaining sustainable agroecological results [49; 50; 51]. In addition, the exploration into the genomes of the two endophytic isolates, _Pseudomonas carris_ strain NWUBe30 and _Stenotrophomonas geniculata_ strain NWUBe21, showed the presence of important metabolites and genes that play key / functional roles, amongst other factors, such as chemotaxis, motility, siderophore secretion, iron metabolism, phosphate/phosphorus solubilization/metabolism, nitrogen metabolism, plant hormonal secretions, stress responses, and adaptions. All these highlighted genes confer putative functional attributes on the two endophytic bacterial strains that are crucial to their plant growth-stimulating traits through effective root colonization and the ability to use complex organic and inorganic substrates (thus making them available to plants as usable metabolites), the ability to adapt and cope with stressful conditions in the plant environment, the sequestration of iron and the metabolization of plant use, and phosphate solubilization (the fixing of nitrogen and nitrogen metabolism). The genomic composition of the two endophytic strains confers predictive functional roles on specific genes that regulate plant vigor, fitness, and growth. These results agree with the outcomes of previous studies [14; 52; 53; 54; 55; 56]. A comparative analysis of the two endophytic bacterial strain genomes indicated that the genome of _S. geniculata_ strain NWUBe21 length was 5,120,194 bp, with a G+C content of 64.79% and 4986 protein coding sequences. Additionally, the _P. carris_ strain NWUBe30 genome length was 5,901,107 bp, with a G+C content of 60.23% and 5300 protein coding sequences. Therefore, the full genome length of _P. carris_ strain NWUBe30 was slightly longer than the genome length of _S. geniculata_ strain NWUBe21. However, a G+C content of 64.79% is higher for _S. geniculata_ compared to 60.23% for _P. carris_ NWUBe30. The number of protein-coding sequences is higher for _P.