Skip to main content

Soil Bacteria as a Natural Source of Antifungal Agents against Phytopathogenic Fungus: Aspergillus niger | Chapter 01 | Recent Advances in Biological Research Vol. 2

Soil bacteria are able to synthesize a wide range of metabolites with fungicidal activity. Nine bacterial isolates were obtained from the botanical garden of University of Calabar. Preliminary examination of isolates was carried out using morphological characteristics and biochemical analysis. These isolates were designated  with codes SB1, SB2, SB3, SB4,  SB5, SB6, SB7, and  SB8. Bacterial  isolates  were evaluated for their potentials of antagonism against Aspergillus niger isolated from spoiled vegetables like  tomatoes  by  using  agar  diffusion  technique.  Percentage  inhibition  of  mycelial  growth  by  these isolates  recorded  values  as  27%,  0%,  66%,  40%,  97%,  0%  and  23%  respectively.  Isolates  were analyzed  through  several  biochemical  tests  and  were  identified  as Bacillus  sp., Enterobacter  spp., Pseudomonas  spp., Proteus  spp., Escherichia  coli, Streptococcus  spp.  and Staphylococcus  spp.respectively.  These  result  indicated  that  bacterial  species  exhibited  varying  degree  of  antagonism against  the  fungus Aspergillus  niger. Escherichia  coli  showed  maximum  inhibitory  potential  against tested fungus  with reduction of up to 97% in their mycelial fungal growth, followed by Pseudomonas spp.  and Bacillus  spp.  with  66.7%  reduction.  From  the  results  obtained,  it  is  found  that  the  bacterial species  isolated  from  the  soil  samples  are  effective  as  antifungal  agents  against  phyto-pathogenic fungi. Escherichia  coli,  Pseudomonas  spp.,  Bacillus  spp.  had  more  antagonistic  effect  on  vegetative growth  of  tested  fungi  (Aspergillus  niger).  These  bacterial  species  showed  higher  levels  of inhibitory effect  on  fungal  spore  germination.  The  presented  data  exhibit  the  antifungal  activity  of  bacterial species and indicate the possibility of using these bacterial species as a biological agent to control the phyto pathogenic fungi.

Biography of author(s)

Mrs. Anitha Prakash Rao
Department of Microbiology, Faculty of Biological Sciences, University of Calabar, P.M.B. 1115, Calabar, Nigeria.

Dr. Bassey Etta Agbo
Department of Microbiology, Faculty of Biological Sciences, University of Calabar, P.M.B. 1115, Calabar, Nigeria.

Dr. (Mrs.) Nsikan S. Udoekong
Department of Science and Technology, Akwa Ibom State Polytechnic, Ikot Osurua, Ikot Ekpene, Nigeria.

Miss Hannah A. Etuk
Department of Microbiology, Faculty of Biological Sciences, University of Calabar, P.M.B. 1115, Calabar, Nigeria.

Read full article: http://bp.bookpi.org/index.php/bpi/catalog/view/45/205/359-1

View Volume: https://doi.org/10.9734/bpi/rabr/v2
Labels:

Comments

Post a Comment

Popular posts from this blog

Greening Regional Airports: A Vision for Carbon Neutral Infrastructure | Chapter 12 | Contemporary Perspective on Science, Technology and Research Vol. 3

 This study provides an overview of the energy demand of a regional airport, divided into individual time horizons. The electrification of aircraft systems raises the question of whether airports will be among the largest electricity consumers in our infrastructure in the future. Sustainability and especially emission reductions are significant challenges for airports that are currently being addressed. The Clean Sky 2 project GENESIS addresses the environmental sustainability of hybrid-electric 50-passenger aircraft systems in a life cycle perspective to support the development of a technology roadmap for the transition to sustainable and competitive electric aircraft systems. This article originates from the GENESIS research and describes various options for ground power supply at a regional airport. Potential solutions for airport infrastructure with a short (2030), medium (2040), and long (2050) time horizon are proposed. In addition to the environmental and conservation benefi...
Post a Comment
Read more

Risk Factors for Postpartum Psychiatric Disorders. A Review of the Literature | Chapter 8 | New Visions in Medicine and Medical Science Vol. 4

  Objective: The aim of this study was to explore the risk factors for the development of postpartum psychiatric disorders through international literature. Materials and Methods: Throughout many articles in PubMed, Google scholar and PsycInfo, a great amount of recent data was gathered to identify the disorders that are most common as well as their risk factors. Results: After childbirth, most commonly women experience postpartum depression, anxiety disorders, post-traumatic stress disorder and postpartum psychosis. All the disorders have many similar risk-factors with the main one being preexisting psychiatric disorder and many similar symptoms too. Conclusions: Women after childbirth are at risk of experience many psychiatric disorders, such as postpartum distress, postpartum post traumatic stress disorder and even more rarely postpartum psychosis. It is important to provide comprehensive support to ensure the well-being of both the mother and the infant and this will b...
Post a Comment
Read more

Alkali Element Modification of Glucose Molecules as a Method to Dissolve Cancer Cells | Chapter 12 | New Visions in Medicine and Medical Science Vol. 4

  The present study highlights about alkali element modification of glucose molecules as a method to dissolve cancer cells. The central regulation of the mechanisms governing cell proliferation has little effect on cancer cells. Cancer cells are entirely independent of the central command and divide and proliferate on their own, making it challenging to activate their response mechanism. Precisely, this is the reason why they are at risk to the health of humans and/or any biological entities. Instead of trying to reconnect the central command of the growth control mechanism to cancer cells that are already out of the range, we present a method of using the cancer cell’s own irresponsive and uncontrolled growth mechanism to their disadvantage and destroy the cancer cells. We found that this is achievable in an atomic/molecular level study of the glucose molecule, which is the primary food source used for growth and energy generation by all cells in the body, including the cancer cel...
Post a Comment
Read more