4 research outputs found
Correction: Bopape et al. The Genome of a Pigeonpea Compatible Rhizobial Strain ‘10ap3’ Appears to Lack Common Nodulation Genes. Genes 2023, 14, 1084
No full textProf. Dr. Ahmed Idris Hassen was not included as an author in the original publication [...
Potential for the Exploitation of Nutritional Traits of Sweet Sorghum (Sorghum bicolor (L.) Moench) in Food Systems
No full textSweet sorghum (Sorghum bicolor (L.) Moench) is a drought-tolerant small-grain cereal which is cultivated largely by smallholder farmers in sub-Saharan Africa. It has potential as a dual-purpose crop. The grain is rich in antioxidants, and the stalks accumulate nutritious juice that can be processed into ethanol or syrup. The sweet sorghum syrup contains lower sucrose and total sugar but greater amounts of organic acids and minerals than sugarcane syrup. The biomass is used for livestock feeds. Currently, there is substantial diversity in the sweet sorghum germplasm collections from various African countries. In the future, there will be merit in enhancing sweet sorghum cultivars, probably through cytoplasmic male sterility systems. Mutation breeding, in conjunction with modern molecular tools, could also be useful in future breeding efforts. Promoting the use of sweet sorghum as an ingredient in the food and pharmaceutical industries can also offer new opportunities in the value chain
The Genome of a Pigeonpea Compatible Rhizobial Strain ‘10ap3’ Appears to Lack Common Nodulation Genes
No full textThe symbiotic fixation of atmospheric nitrogen (N) in root nodules of tropical legumes such as pigeonpea (Cajanus cajan) is a complex process, which is regulated by multiple genetic factors at the host plant genotype microsymbiont interface. The process involves multiple genes with various modes of action and is accomplished only when both organisms are compatible. Therefore, it is necessary to develop tools for the genetic manipulation of the host or bacterium towards improving N fixation. In this study, we sequenced the genome of a robust rhizobial strain, Rhizobium tropici ‘10ap3’ that was compatible with pigeonpea, and we determined its genome size. The genome consisted of a large circular chromosome (6,297,373 bp) and contained 6013 genes of which 99.13% were coding sequences. However only 5833 of the genes were associated with proteins that could be assigned to specific functions. The genes for nitrogen, phosphorus and iron metabolism, stress response and the adenosine monophosphate nucleoside for purine conversion were present in the genome. However, the genome contained no common nod genes, suggesting that an alternative pathway involving a purine derivative was involved in the symbiotic association with pigeonpea
Diversity in Selected Grain Mineral and Protein among Pigeonpea Landraces
No full textPigeonpea (Cajanus cajan) is an important grain legume that provides highly nutritious food for human consumption. It contains high amounts of protein, carbohydrates, fats as well as both macro- and micronutrients. This study examined the genetic diversity of grain mineral and protein content among fourteen pigeonpea landraces. There were highly significant differences (p ≤ 0.001) among the landraces for most of the mineral elements including calcium (Ca), copper (Cu), potassium (K), magnesium (Mg), manganese (Mn), phosphorus (P) and zinc (Zn). The K and P content ranged from 8874.21 to 15,817.38 mg/kg and 2899.23 to 4945.12 mg/kg, respectively. Relatively high amounts of Ca (2103.43 mg/kg) and Mn (73.11 mg/kg) were observed in ‘G-03’, but ‘G-09’ attained the highest content of K (15,817.38 mg/kg) and Zn (38.56 mg/kg). Highly significant (p ≤ 0.001) negative correlations were observed between Mn and Cu. The principal component analysis showed that three landraces (‘G-03’, ‘G-04’ and ‘G-05’) were highly associated with Ca, P, Mg and Mn. The three landraces (‘G-03’ for Ca and Mn; ‘G-04’ for Mg and P; ‘G-09’ for Cu, K and Zn) possessing high grain mineral and protein (‘G-10’) contents can be utilized in pigeonpea breeding programs that are aimed at improving the grain’s traits
