<p>Plant growth promoting rhizobacteria (PGPR) are a group of beneficial bacteria that live in rhizosphere. These bacteria can promote plant growth through several mechanisms, such as the ones produce indole-3-acetic acid (IAA) hormone and hydrogen cyanide (HCN), and act as biocontrol agents. The use of PGPR to promote plant growth has been known to be an environmentally friendly alternative approach. The aim of this study was to explore IAA and HCN producing rhizobacteria from cassava rhizosphere soil and identify the bacteria based on morphological and biochemical characters, hypersensitive reaction test, and the ability test to produce IAA and HCN. The results showed nine bacterial isolates suspected as Micrococcus sp. (six isolates), Neisseria sp. (two isolates), and Bacillus sp. (one isolate). All isolates were able to produce IAA in the concentration range of 50,63–135,00 µg/ml and 232,3–333,9 µg/ml at incubation time of 2 and 4 days, respectively. All isolates were able to produce HCN. In addition, the isolates did not show hypersensitivity reactions. Further study is needed to assess the isolate application for promoting plant growth as well as a biocontrol agent of plant pathogen.</p>
Goat’s milk is white liquid derived from ruminant types of dairy goats. Milk is one of habitats of lactic acid bacteria (LAB). LAB have a potential as antimicrobial because capable to kill the pathogenic bacteria. LAB isolated from Etawa crossbreed goat’s milk were characterized to stipulate the genus of the isolates. Characterization of LAB consists of colony, morphology and biochemical assay. The morphological examination of the colony, cell morphology and biochemical assay showed that three isolates were identified as Leuconostoc, Enterococcus and Lactobacillus. The antimicrobial activity assay showed that those isolates exhibited antibacterial activity against Staphylococcus aureus and Escherichia coli, but those isolates did not exhibit antifungal activity against Candida albicans.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.