| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2021-02-24 |
| タイトル |
|
|
タイトル |
Tolerance of Colpoda cucullus Nag-1 wet resting cysts to extreme pH (pH 1 and 13): Implications of less permeability of the cyst membrane to H+ and OH |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Colpoda; resting cysts; tolerance to extreme pH |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| ID登録 |
|
|
ID登録 |
10.24556/00004711 |
|
ID登録タイプ |
JaLC |
| 著者 |
Nakamura, Rikiya
Sogame, Yoichiro
Arikawa, Mikihiko
Suizu, Futoshi
Matsuoka, Tatsuomi
|
| 抄録 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
In parasitic unicellular eukaryotes, the tolerance to the pH (1-1.5) of gastric acid is a crucial survival strategy so that they can proliferate in the intestinal tract. We found that the resting cysts of non-parasitic soil ciliate Colpoda cucullus Nag-1 showed a strong tolerance to both extremely low and high pH. The purpose of this study was to explore the tolerance mechanism to extreme pH. Most cysts were alive after exposure to 0.1 M HCl (pH 1) for 4 h, or after exposure to 0.1 M NaOH (pH 13) for 3 h. Such tolerance to extreme pH is acquired gradually over several days after encystment induction. The resting cysts were reversibly dehydrated by osmotic pressure when they were transferred from water to 0.1 M HCl or 0.1 M NaOH. This result suggests that H+/Cl- and Na+/OH- may diffuse through the cyst wall to reach the plasma membrane. Acid tolerance was reduced in the presence of protonophore
(CCCP), suggesting that less permeability of the cyst plasma membrane to H+ may be responsible for acid tolerance. |
|
言語 |
en |
| bibliographic_information |
en : The Journal of protozoology research
巻 30,
号 1-2,
p. 38-46,
発行日 2020
|
| 出版者 |
|
|
出版者 |
National Research Center for Protozoan Diseases |
|
言語 |
en |
| item_2_source_id_9 |
|
|
収録物識別子タイプ |
PISSN |
|
収録物識別子 |
09174427 |
| item_2_source_id_11 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA10824856 |
| 権利 |
|
|
言語 |
en |
|
権利情報 |
National Research Center for Protozoan Diseases |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
application/pdf |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 日本十進分類法 |
|
|
主題Scheme |
NDC |
|
主題 |
649 |
JPR_30_38-46_2020 (533.2 kB)
