Impact of Salinity and pH on Several Species of Anabaena (Nostocaceae, Nostocales) Isolated from Rice Fields in Iran | ||
| Plant, Algae, and Environment | ||
| مقاله 5، دوره 2، شماره 1، 2018، صفحه 164-172 اصل مقاله (1.97 M) | ||
| نویسندگان | ||
| Elahe Aslani* 1؛ Fatemeh Heidari2؛ Hossein Riahi2؛ Zeynab Shariatmadari2 | ||
| 1Faculty of Life Sciences and Biotechnology, University of Shahid Beheshti, Evin, Tehran, Iran | ||
| 2Faculty of Life Sciences and Biotechnology, University of Shahid Beheshti, Evin, Tehran, Iran. | ||
| چکیده | ||
| The purpose of this study is to developa biofertilizer based on filamentous nitrogen-fixing cyanobacteria selected from ricefields and to generate a technological packagecompatible with its use for the rice cropin Iran. Cyanobacteria was isolated and purifiedfrom rice fields in Kalate Naderi. Inthis research we studied the effect of salinity(NaCl, 0, 1, 2 and 4%) and pH (5, 7, 9 and11) on growth and chlorophyll-a contentsin six species of Anabaena. Results showedthat Anabaena sphaerica Bornet & Flanaultpossessed the best adaptation to pH changes.It could be more active in 5-11 pH values.A. vaginicola F.E. Fritsh & Rich andA. variabilis Kutzing ex Bornet & Flanaultwere remarkable for salinity tolerance. Theyadapted to salinity stress up to 2% salt concentrationin the medium. Our results indicatedthat the growth of all strains decreaseby 4% salt concentration and pH 11. Indeed,Anabaena is a cyanobacterium with nitrogenfixation ability and high potency of adaptationto environmental stress. So, it canbe a useful candidate for biofertilizer in agriculture,particularly in rice fields. | ||
| کلیدواژهها | ||
| Biofertilizer؛ Heterocyst cyanobacteria؛ pH stress؛ Rice field؛ Salinity stress | ||
| مراجع | ||
|
| ||
|
آمار تعداد مشاهده مقاله: 272 تعداد دریافت فایل اصل مقاله: 361 |
||