Data/hora: 25/06/2024 06:00:57

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 30/09/2013
Data da última atualização: | 30/09/2013
Autoria: | KAVAMURA, V.; SANTOS, S. N.; SILVA, J. L. da; PARMA, M. M.; AVILA, L. A.; VISCONTI, A.; ZUCCHI, T. D.; TAKETANI, R. G.; ANDREOTE, F. D.; MELO, I. S. de.
Afiliação: | VANESSA NESSNER KAVAMURA, ESALQ-USP; SUIKINAI NOBRE SANTOS, ESALQ-USP; JOAO LUIZ DA SILVA, CNPMA; MARCIA MARIA PARMA, CNPMA; LUCIANA APARECIDA ÁVILA; ALEXANDRE VISCONTI, FCA-UNESP; TIAGO DOMINGUES ZUCCHI; RODRIGO GOUVÊA TAKETANI; FERNANDO DINI ANDREOTE, ESALQ-USP; ITAMAR SOARES DE MELO, CNPMA.
Título: | Screening of Brazilian cacti rhizobacteria for plant growth promotion under drought.
Ano de publicação: | 2013
Fonte/Imprenta: | Microbiological Research, Jena, v. 168, n. 4, p. 183-191, 2013.
Idioma: | Inglês
Conteúdo: | Drought is one of the major problems worldwide. The search for new and efficient microorganisms, from unexplored environments, to be used in association with plants to alleviate the negative effects imposed by water stress, is an interesting alternative. Thus, cacti-associated bacteria from the Brazilian semi-arid region were isolated based on their ability to grow in medium with reduced water availability. Strains were tested for the production of exopolysaccharides (EPS), as well as in vitro plant growth promotion traits. A great proportion of the isolates belong to the genus Bacillus. From a total of forty-eight bacteria, 65% were able to grow in medium with reduced water availability (0.919Aw), exopolysaccharide production was observed for 65% of the strains. The production of indole acetic acid (IAA) exceeding 51mg mL-1 was observed for 4% and the high solubilization of Ca-P was verified for 6% of the isolates. No strain was able to produce hydrogen cyanide (HCN), 71% produced ammonia and 79% showed a halo of carboxymethyl cellulose (CMC) degradation. Zea mays L. growth promotion under water stress (30% of field capacity) was achieved by two strains of Bacillus spp. This is the first report to describe cacti-associated bacteria from Brazilian semi-arid with plant growth-promoting abilities.
Palavras-Chave: | PGPR; Zea mays L.
Thesagro: | Cacto; Deficiência hídrica; Milho; Regulador de crescimento; Rhizobium.
Thesaurus Nal: | Cacti and succulents; Corn; Growth promotion; Rhizobacter; Semiarid zones; Water stress.
Categoria do assunto: | S Ciências Biológicas
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (12793-1) - UPC - AP - DD -  -  -  - DIS