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Diurnal variability of Synechococcus abundance in Sagami Bay, Japan

หน่วยงาน National Institute Of Oceanography (NIO), India

รายละเอียด

ชื่อเรื่อง : Diurnal variability of Synechococcus abundance in Sagami Bay, Japan
นักวิจัย : Mitbavkar, S. , Saino, T.
คำค้น : Diurnal variations , Abundance , Picoplankton , Cell division
หน่วยงาน : National Institute Of Oceanography (NIO), India
ผู้ร่วมงาน : -
ปีพิมพ์ : 2558
อ้างอิง : Hydrobiologia, vol.747(1); 2015; 133-145. , http://drs.nio.org/drs/handle/2264/4713
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : -
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Synechococcus, the most dominant picophytoplankton in coastal regions, exhibits diurnal variations in the open ocean. The aim of this study was to assess its short-term population dynamics and cell cycle phases through DNA analysis in a coastal region (Sagami Bay, Japan) by sampling at fixed intervals vertically across the euphotic zone. Day-to-day variations in physical processes such as mixing, induced by wind, and advective events played an important role in structuring Synechococcus population. Compared to sub-surface population, surface cells entered S phase earlier in the day and were arrested and accumulated in the S phase for a longer time suggesting an inhibitory effect by higher irradiance. Increase of G2-phase cells during the dark suggests progression of cells through S phase in absence of light. Although the length of G2-phase was not known, subsequent increase in G1-phase cells in the early morning and late evening suggests occurrence of two cohorts of cells which divided in the dark phase or late evening of the cycle. This study showed that the population responds differently across the euphotic zone depending on the physical structure of the water column and its cell cycle phases are controlled by the vertical irradiance availability

บรรณานุกรม :
Mitbavkar, S. , Saino, T. . (2558). Diurnal variability of Synechococcus abundance in Sagami Bay, Japan.
    : National Institute Of Oceanography (NIO), India.
Mitbavkar, S. , Saino, T. . 2558. "Diurnal variability of Synechococcus abundance in Sagami Bay, Japan".
    : National Institute Of Oceanography (NIO), India.
Mitbavkar, S. , Saino, T. . "Diurnal variability of Synechococcus abundance in Sagami Bay, Japan."
    : National Institute Of Oceanography (NIO), India, 2558. Print.
Mitbavkar, S. , Saino, T. . Diurnal variability of Synechococcus abundance in Sagami Bay, Japan. : National Institute Of Oceanography (NIO), India; 2558.