Data/hora: 02/06/2024 03:51:01

Biblioteca(s): | Embrapa Agrobiologia.
Data corrente: | 03/08/2001
Data da última atualização: | 03/08/2001
Autoria: | GONZALEZ, L. E.; BASHAN, Y.
Título: | Increased growth of the microalga chlorella vulgaris when coimmobilized and cocultured in alginate beads with the plant-growth promoting bacterium Azospirillum brasiliense.
Ano de publicação: | 2000
Fonte/Imprenta: | Applied and Environmental Microbiology, Washington, v. 66, n. 4, p. 1527-1531, 2000.
Idioma: | Inglês
Conteúdo: | Coimmobilization of the freshwater microalga Chlorella vulgaris and the plant-growth-promoting bacterium Azospirillum brasiliense in small alginate beads resulted in a significantly increased growth of the microalga. Dry and fresh weight, total number of cells, size of the microalgal clusters (colonies) withinvthe bead, number of microalgal cells per cluster, and the levels of microalgal pigments significantly increased. Light microscopy revealed that both microorganisms colonized the same  cavities inside the beads, though the microalgae tended to concentrate in the more aerated periphery while the bacteria colonized the entire bead. The effect of indole-3-acetic acid addition to microalgal culture prior to immobilization of microorganisms in alginate beads partially imitated the effect of A.brasiliense. We propose that coimmobilization of microalgae and plant-growth-promoting bacteria is an effective means of increasing microalgal populations within confined environments.
Palavras-Chave: | Growth.
Thesagro: | Bactéria; Crescimento.
Categoria do assunto: | --
Registro original: | Embrapa Agrobiologia (CNPAB)
Exemplares: | CNPAB - (24620-1) - ADD - SP - -- -  -  - 22429 - DIS