Please use this identifier to cite or link to this item:
http://digitalrepository.fccollege.edu.pk/handle/123456789/1381
Title: | Identification of plant growth hormones produced by bacterial isolates from rice, wheat and kallar grass |
Authors: | Latif, Farooq Rasul, Ghulam Mirza, M. Sajjad Malik, Dr. Kauser .A. |
Keywords: | Indoleacetic Acid Root Area Growth Hormone Root Length Gibberellic Acid |
Issue Date: | 1998 |
Publisher: | springer link |
Citation: | Rasul G., Mirza M.S., Latif F., Malik K.A. (1998) Identification of plant growth hormones produced by bacterial isolates from rice, wheat and kallar grass. In: Malik K.A., Mirza M.S., Ladha J.K. (eds) Nitrogen Fixation with Non-Legumes. Developments in Plant and Soil Sciences, vol 79. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5232-7_4 |
Series/Report no.: | Nitrogen Fixation with Non-Legumes. Developments in Plant and Soil Sciences, vol 79. Springer, Dordrecht.; |
Abstract: | Identification and quantification of the plant growth hormones indoleacetic acid and gibberellic acid, produced by plant growth-promoting rhizobacteria (PGPR), was carried out by using high-pressure liquid chromatography (HPLC). The PGPR strains were isolated from roots of rice, wheat and kallar grass and belonged to the genera Azoarcus, Azospirillum, Enterobacter, Pseudomonas and Zoogloea. For these studies, bacteria were grown in liquid nitrogen free malate (NFM) or combined carbon medium (CCM) containing tryptophan and combined nitrogen. Some Azospirillum strains produced both indoleacetic acid and gibberellic acid, while none of the Enterobacter spp. tested produced these growth hormones. Azoarcus strain K-1 produced higher amounts of gibberellic acid and Azospirillum strain ER-2 produced higher amounts of indoleacetic acid. Indoleacetic acid production increased with the age of bacterial cultures while a decrease in the production of gibberellic acid was noted at later growth stages. Pure indoleacetic acid and gibberellic acid in the concentration range 1–2 µg/ml increased root area and plant biomass of rice and wheat. Among PGPR strains tested, Pseudomonas 96–51 and its extract containing growth hormones increased root area, root length and plant biomass of rice and wheat. |
Description: | https://doi.org/10.1007/978-94-011-5232-7_4 |
URI: | http://localhost:8080/xmlui/handle/123456789/1381 |
Appears in Collections: | School of Life Sciences |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
identification of plant growth hormones produced by bacterial i.pdf | 5.25 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.