
Nahdhoit Ahamada RachidIstanbul University · Department of Microbiology
Nahdhoit Ahamada Rachid
Master of Science
About
13
Publications
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Publications
Publications (13)
Scientists emphasize the enormous potential of new sources of bioactive compounds to combat global diseases. One of the most important of these sources is the endophytic fungi. They are defined as fungi that asymptomatically colonize intracellular spaces within plant tissues. The biodiversity of these fungi, which have a symbiotic relationship with...
The rhizosphere, the thin space around the root surface, is an important microenvironment housing a highly diversified microbial community. It includes of three zones named endorhizosphere, ectorhizosphere, and rhizosphere. Each zone harbors microorganisms with defined functions like nutrient cycling, disease protection, and pathogenicity. The rhiz...
Ecological Dynamics in the Face of Climate Change: Exploring Organisms, Habitats, and Behavioural Adaptations is a comprehensive exploration of the profound impacts of climate change on ecosystems and living things. It encompasses a broad spectrum of topics, from the pivotal role of microorganisms in combating global warming to the dramatic changes...
Abiotic and biotic factors, especially microorganisms, play a role in the development of cave formations and the existence of unique characteristics of each cave. Due to the ecological conditions that characterize the cave environments, highly specialized microorganisms that are the main source of diverse bioactive compounds, inhabit these environm...
Plants in general and mangroves in particular can harbor hyper-diverse microorganisms in their different compartments including the phyllosphere area. This study used the leaves of three mangrove species; black mangrove (Avicenia germinans), red mangrove (Rhizophora mangle) and mangrove apple (Sonneratia alba) in order to evaluate the phyllosphere...
Some of microorganisms identified in cave ecosystems have been reported to play a permanent and strategic role for maintaining life of these environments. Human entrance into caves can induce some changes of cave physicochemical parameters which ultimately impacts the living organisms. In these facts, for the first time, Morca Cave was explored in...
Health issue and pollution of the environment are mainly caused by using chemicals and synthetic materials. This issue incites scientists to research for new biological compounds beneficial to human being. Caves, being extreme environments might be potential sources of these compounds. Actinobacteria, one of the main groups that are colonizing thes...
Some microorganisms identified in cave ecosystems have been reported to play a permanent and significant role for maintaininglife in such environments. Human entrance into caves can induce some changes on cave physic-ochemical parameters which altimately affects the living organisms. In this regard, for the first time, Morca Cave was explored to ev...
Microorganisms are distributed everywhere even on the extreme environments such as caves. The underground surfaces are minerals rich and the life in there is found to be related to both biotic and abiotic factors. Since the cycle of these minerals is insured by the chemolithotrophs living in there. In addition, caves are also considered as importan...
With the evolution of the industry, our environment become polluted with toxic chemicals. Avoiding such
problems, replacement of synthetic materials by natural products still the best solution. Therefore, microorganisms
are the favorable sources due to their continuous availability and manipulation at low cost. Research for new
bioactive compounds...
In the last decade, the environmental problems of microplastics have been occupied a large place in world scientific researches. The unbreakable property of these particles causes their rapid accumulation in the environment. Their micro and millimetric sizes let them be distributed over the world in a way almost uncontrollable. Works are still mult...
Questions
Questions (3)
I want to study the diversity of microorganisms in a specific area of a cave, so i have the OTUs table and the alpha diversity. Now I want to apply my data for beta diversity in order to compare my sampling areas.
I want to isolate microbial DNA from a soil sample and i used " FastDNA Soil Kit ". The result show a pike at the 230nm and not at the 260nm, and as a value of 280/260. I tried to do gel electrophorese and see if i can see a DNA band or not, and there are some bands. So i can't understand what is wrong? Can you help me and give some suggestion?
Thank you!
For the screening of microplastic biodegradation, i make a culture of bacteria on mineral salt agar(bacteriological agar) with microplastic as the sole carbone source. But in the negatif control (the same medium without carbone source) there is a developpement of some colonies. I can not understand how this bacteria can multiplied without carbone source.