Journal
PLANT CELL AND ENVIRONMENT
Volume 36, Issue 8, Pages 1520-1528Publisher
WILEY
DOI: 10.1111/pce.12085
Keywords
bryophytes; chloroplast; cold positioning; cryorelocation; environmental stress; mitochondria; nucleus; peroxisome
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Funding
- Japan Society for JSPS KAKENHI [23870002]
- MEXT KAKENHI [23120516, 23119510]
- Utsunomiya University
- Asahi Glass Foundation
- Sumitomo Foundation [110719]
- University of Tsukuba
- Grants-in-Aid for Scientific Research [23870002, 24658095, 24580140] Funding Source: KAKEN
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Organelles change their subcellular positions in response to various environmental conditions. Recently, we reported that cold treatments alter the intracellular position of chloroplasts and nuclei (cold positioning) in the fern Adiantum capillus-veneris; chloroplasts and nuclei localized to the periclinal cell wall relocated to anticlinal cell wall after cold treatments. To further understand organelle positioning under cold conditions, we studied cold-induced organelle relocation in the liverwort Marchantia polymorpha L. When sporelings and gemmmalings were treated under low temperature (5 degrees C), chloroplast cold positioning response was successfully induced both in the sporelings and the gemmmalings of M. polymorpha. Using a genetic transformation, nuclei, mitochondria or peroxisomes were visualized with a fluorescent protein, and the transgenic gemmmalings were incubated under the cold condition. Nuclei and peroxisomes, but not mitochondria, clearly relocated from the periclinal cell wall to the anticlinal cell wall after cold treatments. Our findings suggest that several organelles concurrently change their positions in the liverwort cell to cope with cold temperature.
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