Regulated Lignin Structural Units and Soil Organic Carbon Content by Cowpea Peroxidase

Abstract

Peroxidases participate in lignin biosynthesis, but there is no biochemical resolution between the structural units of lignin and soil organic carbon (SOC) contents. Black-eyed beans are staple high-protein foods for millions of at-risk populations in every continent. Its cultivation in semiarid zones could be leveraged to maximize SOC sequestration. Cowpea was treated with stoichiometric mixes of mineral nutrients. Peroxidase was electrophoretically purified from leaves, and assayed for o-dianisidine (guaiacyl units) and pyrogallol (p-hydroxyphenyl units) substrate specificities. Lignin, and SOC compositions were determined by gravimetry. Sulfate-treated cowpea produced the highest lignin (318.88 kg·ha ). The high SOC sequestration technology involving fertilization with stoichiometric mixes of mineral nutrients could enable limited resource farmers who cultivate cowpeas as cover crop in the Sahel to improve SOM while producing their staple crop.

Optimization of Cowpea Dry Grain Yield through the Stimulation of the RNA Synthetic Activity of NADH-Glutamate Dehydrogenase

“…When the total protein content of cowpea seeds was low as in unfertilized control cowpea, it suggested that GDH synthesized the RNA enzyme fragment #5 ( Table 2) that partially degraded some of the mRNA encoding the vicilin [9]. Therefore, GDH through synthesis of RNA maintains a biochemical equilibrium between the plants' exterior environment and the interior biochemical, metabolic, physiological environment, as reflected by cowpea dry grain yield ( Table 2) that destroyed the mRNA encoding the peroxidases [73]. Therefore, inappropriate fertilization that caused decreases of soil organic carbon contents [7] led to decreases in cowpea dry grain yield (Table 1).…”