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| Content Provider | Springer Nature Link |
|---|---|
| Author | Fujikawa, S. Kuroda, K. Jitsuyama, Y. Sa, Y. Ohtani, J. |
| Copyright Year | 1999 |
| Abstract | By cryo-scanning electron microscopy we examined the effects of the organization of the cell walls of xylem ray parenchyma cells on freezing behavior, namely, the capacity for supercooling and extracellular freezing, in various softwood species. Distinct differences in organization of the cell wall were associated with differences in freezing behavior. Xylem ray parenchyma cells with thin, unlignified primary walls in the entire region (all cells inSciadopitys verticillata and immature cells inPinus densiflora) or in most of the region (mature cells inP. densiflora and all cells inP. pariflora var.pentaphylla) responded to freezing conditions by extracellular freezing, whereas xylem ray parenchyma cells with thick, lignified primary walls (all cells inCrytomeria japonica) or secondary walls (all cells inLarix leptolepis) in most regions responded to freezing by supercooling. The freezing behavior of xylem ray parenchyma cells inL. leptolepis changed seasonally from supercooling in summer to extracellular freezing in winter, even though no detectable changes in the organization of cell walls were apparent. These results in the examined softwood species indicate that freezing behavior of xylem ray parenchyma cells changes in parallel not only with clear differences in the organization of cell walls but also with subtle sub-electron-microscopic differences, probably, in the structure of the cell wall. |
| Starting Page | 31 |
| Ending Page | 40 |
| Page Count | 10 |
| File Format | |
| ISSN | 0033183X |
| Journal | Protoplasma |
| Volume Number | 206 |
| Issue Number | 1-3 |
| e-ISSN | 16156102 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 1999-01-01 |
| Publisher Place | Vienna |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Freezing tolerance Xylem ray parenchyma cells Cell wall ultrastructure Supercooling Cryo-scanning electron microscopy Cell Biology Plant Sciences Zoology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Plant Science Medicine |
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