| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
This study focused on the taxonomy and molecular evolution for environmental adaptation contributed to speciation of green algal genus Ulva. Ulva meridionalis Horimoto et Shimada sp. nov. was described from the Todoroki River, Okinawa Prefecture. Ulva adhaerens Matsumoto et Shimada sp. nov. was described from the samples resembling U. conglobate. Ulva tepida Masakiyo et Shimada sp. nov. was described from Kanto region. Ulva linza (seawater), U. prolifera (brackish water) and bloom strain (seawater) were closely related in nrITS2 analysis. After 7 days of freshwater exposure, the viability of U. linza decreased to approximately 20%, while U. prolifera showed nearly 100% viability. In order to search what genes are related to low-salinity adaptation of U. prolifera, the expressed genes of U. prolifera and U. linza cultured under seawater (SW), brackish water (BW) and freshwater (FW) conditions were compared by RNA-seq.
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