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Keina Monda Last modified date:2021.09.07

Assistant Professor / Informational Biology
Department of Biology
Faculty of Sciences


Graduate School
Undergraduate School
Other Organization


Homepage
https://kyushu-u.pure.elsevier.com/en/persons/keina-monda
 Reseacher Profiling Tool Kyushu University Pure
http://www.biology.kyushu-u.ac.jp/~plantgenomics/
Laboratory of Plant Genomics .
Academic Degree
Doctor of Science, Ph.D.
Field of Specialization
Plant physiology
Outline Activities
Global environmental changes such as global warming and rising atmospheric CO2 concentration have a significant impact on plant ecosystems and agriculture. In order to clarify how plants adapt to these environmental changes, I have been studying the stomatal regulation mechanisms in Arabidopsis thaliana natural accessions.
Research
Research Interests
  • Construction of an experimental system for plant response to increased CO2
    keyword : Carbon dioxide, Arabidopsis, Photosynthesis, Biomass
    2018.04.
  • Searching for High CO2 Favorite Plants Using Leaf Thermal Imaging Techniques.
    keyword : Arabidopsis, CO2, Nitrogen, Thermal imaging
    2018.04.
Academic Activities
Papers
1. Keina Monda, Atsushi Mabuchi, Sho Takahashi, Juntaro Negi, Ryoma Tohmori, Ichiro Terashima, Wataru Yamori, Koh Iba, Increased Cuticle Permeability Caused by a New Allele of ACETYL-COA CARBOXYLASE 1 Enhances CO2 Uptake, Plant Physiology, 10.1104/pp.20.00978, 184, 4, 1917-1926, 2020.12, Carbon dioxide (CO2) is an essential substrate for photosynthesis in plants. CO2 is absorbed mainly through the stomata in land plants because all other aerial surfaces are covered by a waxy layer called the cuticle. The cuticle is an important barrier that protects against extreme water loss; however, this anaerobic layer limits CO2 uptake. Simply, in the process of adapting to a terrestrial environment, plants have acquired drought tolerance in exchange for reduced CO2 uptake efficiency. To evaluate the extent to which increased cuticle permeability enhances CO2 uptake efficiency, we investigated the CO2 assimilation rate, carbon content, and dry weight of the Arabidopsis (Arabidopsis thaliana) mutant excessive transpiration1 (extra1), whose cuticle is remarkably permeable to water vapor. We isolated the mutant as a new allele of ACETYL-COA CARBOXYLASE1, encoding a critical enzyme for fatty acid synthesis, thereby affecting cuticle wax synthesis. Under saturated water vapor conditions, the extra1 mutant demonstrated a higher CO2 assimilation rate, carbon content, and greater dry weight than did the wild-type plant. On the other hand, the stomatal mutant slow-type anion channel-associated1, whose stomata are continuously open, also exhibited a higher CO2 assimilation rate than the wild-type plant; however, the increase was only half of the amount exhibited by extra1. These results indicate that the efficiency of CO2 uptake via a permeable cuticle is greater than the efficiency via stomata and confirm that land plants suffer a greater loss of CO2 uptake efficiency by developing a cuticle barrier..
2. Monda K, Araki H, Kuhara S, Ishigaki G, Akashi R, Negi J, Kojima M, Sakakibara H, Takahashi S, Hashimoto-Sugimoto M, Goto N, Iba K, Enhanced Stomatal Conductance by a Spontaneous Arabidopsis Tetraploid, Me-0, Results from Increased Stomatal Size and Greater Stomatal Aperture, Plant Physiology, 10.1104/pp.15.01450, 170, 3, 1435-1444, 2016.03.
3. Takahashi S*, Monda K*, Negi J, Konishi F, Ishikawa S, Hashimoto-Sugimoto M, Goto N, Iba K (*co-first author), Natural Variation in Stomatal Responses to Environmental Changes among Arabidopsis thaliana Ecotypes, PLOS ONE, 10.1371/journal.pone.0117449, 10, 2, e0117449, 2015.02.
4. Monda K, Negi J, Iio A, Kusumi K, Kojima M, Hashimoto M, Sakakibara H, Iba K, Environmental regulation of stomatal response in the Arabidopsis Cvi-0 ecotype, Planta, 10.1007/s00425-011-1424-x, 234, 3, 555-563, 2011.05.
Presentations
1. Monda K,Mabuchi A,Takahashi S,Negi J,Tohmori R,Terashima I,Yamori W,Iba K, Increased Cuticle Permeability Caused by a New Allele of ACETYL-COA CARBOXYLASE 1 Enhances CO2 Uptake Efficiency in Arabidopsis, The 31st International Conference on Arabidopsis Research (ICAR2021), 2021.06.
2. Monda K, Iba K, Environmental adaptation in stomatal size and aperture in Arabidopsis natural accessions, 5th International Symposium on Plant Signaling and Behavior, 2017.06.
3. Monda K, Takahashi S, Negi J, Tohmori R, Mabuchi A, Kojima M, Takebayashi Y, Sakakibara H, Iba K, Isolation of Arabidopsis mutants with abnormalities in stomatal response to humidity, light, or CO2, The 28 th International Conference on Arabidopsis Research (ICAR 2017), 2017.06.
4. Monda K, Negi J, Ishigaki G, Araki H, Takahashi S, Hashimoto-Sugimoto M, Kuhara S, Akashi R, Goto N, Iba K, Environmental Responses of An Arabidopsis Ecotype, Me-0, with Giant Stomata, The 25th International Conference on Arabidopsis Research (ICAR 2014), 2014.07.
5. Monda K, Negi J, Goto N, Iba K, Stomatal features and responses to environmental signals in the Arabidopsis Me-0 ecotype, The 23rd International Conference on Arabidopsis Research (ICAR2012), 2012.07.
6. Monda K, Negi J, Iio A, Kusumi K, Kojima M, Hashimoto M, Sakakibara H, Iba K, Environmental regulation of stomatal response in Arabidopsis Cvi-0 ecotype, XVIII International Botanical Congress (IBC2011), 2011.07.
Membership in Academic Society
  • The Japanese Society of Plant Physiologists
  • The Botanical Society of Japan
  • Japanese Society for Plant Cell and Molecular Biology