Suchergebnisse

Duckweed is a future food and a source of affordable protein that has the potential to replace animal protein. This study aims to formulate a bio-fertilizer consisting of mangrove-associated bacteria to boost the growth and protein of duckweeds as a sustainable approach to increase plant-based protein yields. The culture-depending technique was performed by using Aleksandrow agar, Pikovskaya's agar, and Jensen agar to screen potassium-solubilizing bacteria, phosphate-solubilizing bacteria and nitrogen-fixing bacteria, respectively, from mangrove soil sediments. Mangrove-associated bacteria that are close to <i>Acinetobacter radioresistens</i>, <i>Brachybacterium paraconglomeratum</i>, and <i>Enterobacter cloacae</i>, which are known as nitrogen-fixing bacteria, <i>Klebsiella quasipneumoniae</i>, <i>Bacillus tropicus</i>, and <i>Paenibacillus pasadenensis</i> known as potassium-solubilizing bacteria, and <i>Bacillus cereus</i> and <i>Bacillus thuringiensis</i> known as phosphate-solubilizing bacteria were identified through 16S rRNA gene sequencing. After that, three sets of bio-fertilizers were randomly formulated. Each set consisted of nitrogen-fixing bacteria, potassium- and phosphate-solubilizing bacteria, as well as commercial compost as a carrier. These formulated bio-fertilizers were evaluated for plant growth promotion and protein production on duckweed plants under temperatures between 26 and 30°C. The results showed that each set of our formulated bio-fertilizer can increase the nitrogen (N), phosphorus (P), and potassium (K), duckweed growth, and protein content when compared to the control group. It indicates that bio-fertilizers formulated with mangrove-associated bacteria and high NPK contents could enhance the growth of duckweed as well as its protein content, which could supply our future plant-based protein sustainably.

This book contains eleven chapters focusing on the soil biodiversity in one of the key biodiversity hotspots of the world, i.e., the Amazon and nearby regions of Brazil. It covers both the tropical savannah and the rain forests. Also addressed are the patterns of diversity and communities of various soil organisms (i.e., earthworms, termites, nematodes, termites, ants, microfungi, arbuscular mycorrhizal fungi and nitrogen fixing bacteria). The work presented is based on the Brazilian component of the project 'Conservation and Sustainable Management of Belowground Biodiversity'. This book represents a major contribution to the literature and will interest those in biodiversity conservation, soil science and ecology.