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| Format: | Artículo científico |
| Sprache: | en |
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Universidade Estadual de Maringá
2007
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| Online-Zugang: | https://www.redalyc.org/articulo.oa?id=187115762012 |
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Inhaltsangabe:
- Indolacetic acid production by P-solubilizing microorganisms and interaction with arbuscular mycorrhizal fungi Edson Luiz Souchie Rosario Azcón Jose Miguel Barea Orivaldo José Saggin- Júnior Eliane Maria Ribeiro da Silva Biología Synergism Aspergillus sp plant regulator Scutellospora sp Enterobacteriaceae Indolacetic acid (IAA) production was evaluated under in vitro conditions by five P-solubilizing fungi (PSF), identified as Aspergillus sp. and four P-solubilizing bacteria (PSB) of the Enterobacteriaceae family. The bacteria and fungus isolates were incubated in a liquid medium at 28ºC for two and four days, respectively. Moreover, two PSB isolates of the Enterobacteriaceae family (PSB 8 and PSB 56) were evaluated in relation to their ability to stimulate or inhibit spore germination and hyphal growth of two arbuscular mycorrhizal fungi (AMF) species under in vitro conditions. Two assays were carried out in Petri dishes with agar (0.8%), the first using the AMF Gigaspora margarita and the second with the AMF Scutellospora sp. The treatments were: inoculation of PSB 8; PSB 56 and uninoculated control. P-solubilizing isolates produced different amounts of IAA and most PSF isolates produced higher IAA than PSB. From the 18th day of incubation of Scutellospora sp., a significant increase in hyphal growth in the treatment inoculated with PSB 8 was observed. In contrast, PSB 56 inhibited the hyphal growth of Gigaspora margarita from the 24th day of incubation. 2007 artículo científico 1679-9283 https://www.redalyc.org/articulo.oa?id=187115762012 en http://www.redalyc.org/revista.oa?id=1871 Acta Scientiarum. Biological Sciences application/pdf Universidade Estadual de Maringá Acta Scientiarum. Biological Sciences (Brasil) Num.3 Vol.29