A. Kevin G. Djotan

A. Kevin G. Djotan
The University of Tokyo | Todai · 森林科学

Master of Science
Doctoral research in Plant-Microbe Symbiosis : Mycorrhiza. Expected graduation : April 2024. Currently open to jobs.

About

23
Publications
5,871
Reads
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44
Citations
Citations since 2017
21 Research Items
44 Citations
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Introduction
After years of experience in Forestry, I shifted to Plant-Microbe Symbiosis and I am studying Forest Mycorrhizal Symbiosis at the University of Tokyo. My doctoral research focuses on the diversity and ecology of arbuscular mycorrhizal fungal (AMF) community using meta barcoding, trap culture, and single spore inoculation. I expect to graduate from my university in March 2023 and start my research career in April 2024. I’m therefore open to research position jobs.
Additional affiliations
April 2021 - March 2022
日本大学
Position
  • 実験幇助
Description
  • Helping with experiments and classes
February 2016 - December 2016
Center of forest studies, research and training (CERF, Benin)
Position
  • Assistant Chief service forestry and agroforestry
Description
  • Implement forest estimation activities, Support research activities in the center, planning forest reserves management, GIS-remote sensing to resource management for decision making, research projects designing and implementation
October 2014 - March 2019
Laboratory of Forest Science
Position
  • Research Assistant
Description
  • Applied Research in Ecological Niche Modeling, Silviculture, Forest Management, and Mitigation of Climate Change Impacts
Education
April 2021 - March 2024
The University of Tokyo GSALS
Field of study
  • Forest Botany - Mycorrhizal Symbioses
September 2018 - March 2021
The University of Tokyo GSALS
Field of study
  • Forest Botany - Mycorrhizal Symbioses
October 2016 - March 2019
University of Abomey-Calavi (School of Environmental Planning and Management)
Field of study
  • Forestry and Natural Resources Management

Publications

Publications (23)
Article
Full-text available
Empirical data reporting forest pest damage on Khaya senegalensis have raised concerns over their potential economic impacts. Although the problem was also reported in Benin, scientific data on their economic impact on plantations are lacking. In this study, we combined dendrometry and survey data to estimate the economic impact of wood damage caus...
Poster
Arbuscular mycorrhizal fungi (AMF) have a broad host range and are ubiquitous in all terrestrial ecosystems, but it was unclear whether the same AMF species colonize the same host plant species at different altitudes and slope positions. Cryptomeria japonica, an AMF host tree of the Cupressaceae, is one of the most planted trees in East Asia, inclu...
Poster
Full-text available
• Arbuscular mycorrhizal fungi (AMF) live simultaneously in and outside the root of their host plants but how do the intra- and extraradical communities differ in a specific host tree species? • AMF community described from soil cores or roots retrieved from soil cores collected under a tree species is not necessarily associated with that tree spec...
Poster
Full-text available
Arbuscular mycorrhizal fungi (AMF) live almost simultaneously inside and outside the host’s root to make the mycorrhizal symbiosis functional. Our previous studies of the Cryptomeria japonica-associated AMF communities revealed that AMF diversity was higher in soil than in roots but the opposite in summer. These findings suggested seasonal shifts i...
Poster
Cryptomeria japonica and Chamaecyparis obtusa (Cupressaceae) make up much of Japan's plantations, but there is little research on their mycorrhizae. We investigated their associated arbuscular mycorrhizal fungal (AMF) communities in various environments using morphological and molecular approaches.
Article
Arbuscular mycorrhizal fungi (AMF) colonize the plant root endosphere and extend the host’s resource network. However, little is known about the method to characterize the intraradical AMF communities of a specific tree species in forests. Therefore, we aimed at testing a method for characterizing and comparing the extra- and intraradical AMF commu...
Poster
Japanese cedar (Sugi) and cypress (Hinoki) host arbuscular mycorrhizae (AM) but their dependence and preferences to AM fungi (AMF) are still not well known. We collected samples from conifer plantations in Chichibu, Tanashi and Chiba, and assessed the AM colonization in their roots. We investigated the AMF communities in their roots and rhizospheri...
Thesis
Japanese cedar (Cryptomeria japonica) and cypress (Chamaecyparis obtusa) host arbuscular mycorrhizae (AM) but their dependence and preferences on AM fungi (AMF) are still not well known. I collected samples from conifer plantations in Central Japan (Chiba, Chichibu, and Tanashi) and assessed the AM colonization in their roots. Using the Illumina ne...
Article
Full-text available
Afzelia africana, Entada africana, and Pterocarpus erinaceus are economically important tropical tree species in Africa. In this study, we performed morphological and molecular analyses to examine the mycorrhizal status of these species in their natural habitat in Benin, West Africa. Fine roots were examined using trypan blue staining. Putative arb...
Presentation
The diversity and the structure of the community of Arbuscular Mycorrhizal Fungi (AMF) are still relatively unknown in natural and agricultural ecosystems. AMF are generalist and obligate plant symbionts but to be healthier, host plant species can control and select their AMF partners based on tradeoffs between compatibility, carrying capacity, and...
Poster
Khaya senegalensis, a valuable tropical tree species, is severely attacked by pests in tropical forests. In this study, we surveyed plantations, and interviewed inhabitants to describe damage patterns, and assess the economic cost of forest insect pests in plantations of K. senegalensis in Benin. We found that attacks occur from 2 years after plant...
Article
Full-text available
Les changements climatiques entraînent des modifications de l’environnement qui affectent à leur tour la distribution géographique des organismes vivants. L’infection à Mycobacterium ulcerans, encore appelée ulcère de Buruli (UB), est une maladie infectieuse nécrosante de la peau causée par une mycobactérie environnementale (Mycobacterium ulcerans)...
Poster
Khaya senegalensis, a valuable tropical tree species, is severely attacked by pests in tropical forests. In this study, we surveyed plantations, and interviewed inhabitants to describe damage patterns, and assess the economic cost of forest insect pests in plantations of K. senegalensis in Benin. We found that attacks occur from 2 years after plant...
Poster
Afzelia africana, Entada africana, and Pterocarpus erinaceus are economically important tropical tree species in Africa. In this study, we performed morphological and molecular analyses to examine the mycorrhizal status of these species in their natural habitat in Benin, West Africa. Fine roots were examined using trypan blue staining. Putative arb...
Article
Full-text available
African teak (Milicia excelsa (Welw.) C.C. Berg) is an endangered multi-use species. Understanding the impact of climate change on the distribution of this species may improve the ability to anticipate or recognize its decline or expansion and to take appropriate conservation measures if necessary. Ecological niche modeling was projected in geograp...
Thesis
Full-text available
Khaya senegalensis Desr & Juss and Garcinia kola Heckel are two medicinal forest trees species that provide as well lots of meaningful Non Timber Forest Products as Forest Timber Products. Those two species are undergoing many threats including climate change and forest pest attack. In order to provide forest resources managers and planted fores...
Article
Full-text available
La récolte des semences de Acacia auriculiformis devient très difficile lorsque l'arbre prend de l'âge. Cette étude a évalué la viabilité et la performance de germination des semences de cette espèce éventuellement conservées dans le sol. À cet effet, une expérimentation a été faite sur une période de sept semaines pour dénombrer le nombre de plant...
Article
Full-text available
Fighting against invasive species is a great challenge that requires knowledge about their potential distribution areas. Ageratum conyzoides is an invasive species in several African countries including Benin. In order to analyze the vulnerability of protected areas of Benin to the invasion of this species, and to guide managers of these areas to f...
Article
Full-text available
A study was conducted to assess how well climate changes can help to conserve and restore Garcinia kola Heckel in the Protected Area Network (PAN) and in urban areas in Benin. To achieve this, occurrence data from GBIF was used and the environmental data from AfriClim was used in order to model the species’ potential habitat under current and futur...
Article
Full-text available
Khaya senegalensis Desr & Juss is an urban tree species with high quality wood, unfortunately disturbed by Hypsipyla robusta Moore. However, how vulnerable this species is with regard to climate change and to Hypsipyla robusta over time and space is unknown. This study aimed at assessing as well the climate change impacts on both species as the ove...
Data
The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 412 records. It contains list and geographic position of Benin valuable species in gregarious stands of the protected forest reserve...
Thesis
Full-text available
This study aimed at diagnosing the functioning of Atchérigbé forest sector. This sector cover an area of 2947,40 ha and is located between 7°30' and 7°34' Northern latitude and 2°04' and 2°09' Eastern longitude. The general objective of the study is to improve our theoretical knowledge by practicing while contributing to the sustainable management...

Questions

Question (1)
Question
I collected root samples from different tree species at different sites in different seasons. Every time I processed the samples until the step before DNA extraction and stored them. Samples have accumulated and I have now extract DNA from them. I did DNA extraction from 60 samples at once last years and I could get good results. I would like to know what is the maximal sample size that only one operator can handle in such an experiment without failure.

Network

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Projects

Projects (4)
Project
Screen the highly enriched fungal communities associated with various tree species and identify their best AMF partners, potential candidates of host-specific AMF based inoculants. This is to respond to the need of taking into account the selection by host plants and the competitivity of the AMF symbiont in the microbial communities.
Project
Entitled “ Productivity loss and economic depreciation due to forest pest attacks on biomaterials of Khaya senegalensis Desr. & Juss. in the plantations of Benin (West Africa)”, this project was Investigating whether forest pest outbreak in plantations of K. senegalensis in Benin bears losses on wood production and therefore some economic cost. Specifically, (1) To describe the mechanism of attacks; (2) To assess the productivity loss incurred by biological attacks; and (3) To estimate the economic depreciation of the damaged hardwood.