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The coordination of ploidy and cell size differs between cell layers in leaves
- Growth and developmental processes are occasionally accompanied by multiple rounds of DNA replication, known as endoreduplication. Coordination between endoreduplication and cell size regulation often plays a crucial role in proper organogenesis and cell differentiation. Here, we report that the level of correlation between ploidy and cell volume is different in the outer and inner cell layers of leaves of Arabidopsis thaliana using a novel imaging technique. Although there is a well-known, strong correlation between ploidy and cell volume in pavement cells of the epidermis, this correlation was extremely weak in palisade mesophyll cells. Induction of epidermis cell identity based on the expression of the homeobox gene ATML1 in mesophyll cells enhanced the level of correlation between ploidy and cell volume to near that of wild-type epidermal cells. We therefore propose that the correlation between ploidy and cell volume is regulated by cell identity.
Author details: | Yohei Katagiri, Junko Hasegawa, Ushio Fujikura, Rina Hoshino, Sachihiro Matsunaga, Hirokazu Tsukaya |
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DOI: | https://doi.org/10.1242/dev.130021 |
ISSN: | 0950-1991 |
ISSN: | 1477-9129 |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/26903507 |
Title of parent work (English): | Development : Company of Biologists |
Publisher: | Company of Biologists Limited |
Place of publishing: | Cambridge |
Publication type: | Article |
Language: | English |
Year of first publication: | 2016 |
Publication year: | 2016 |
Release date: | 2020/03/22 |
Tag: | ATML1; Cell volume; Endoreduplication; Epidermis; Mesophyll tissue; Ploidy |
Volume: | 143 |
Number of pages: | 6 |
First page: | 1120 |
Last Page: | 1125 |
Funding institution: | CREST grants from the Japan Science and Technology Agency; Ministry of Education, Culture, Sports, Science and Technology (MEXT/JSPS KAKENHI); JSPS |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Biochemie und Biologie |
Peer review: | Referiert |