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Microalgal Biodiversity at Antarctica

Entry ID: ASAC_2590

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Summary

Abstract: A collection of about 20 isolates of Antarctic microalgae from the Windmill Islands region, around Casey Station has been established in the University of Malaya Algae Culture Collection (UMACC). The Antarctic microalgae in the collection includes Chlamydomonas, Chlorella, Stichococcus, Navicula. Ulothrix and Chlorosarcina. Comparative studies on the effect of global warming and UVR stress on ... these Antarctic microalgae and the tropical collection are being conducted.

From the abstract of one of the referenced papers:

The growth, biochemical composition and fatty acid profiles of six Antarctic microalgae cultured at different temperatures, ranging from 4, 6, 9, 14, 20 to 30 degrees C, were compared. The algae were isolated from seawater, freshwater, soil and snow samples collected during our recent expeditions to Casey, Antarctica, and are currently deposited in the University of Malaya Algae Culture Collection (UMACC). The algae chosen for the study were Chlamydomonas UMACC 229, Chlorella UMACC 234, Chlorella UMACC 237, Klebsormidium UMACC 227, Navicula UMAC 231 and Stichococcus UMACC 238. All the isolates could grow at temperatures up to 20 degrees C; three isolates, namely Navicula UMACC 231 and the two Chlorella isolates (UMACC 234 and UMACC 237) grew even at 30 degrees C. Both Chlorella UMACC 234 and Stichococcus UMAC 238 had broad optimal temperatures for growth, ranging from 6 to 20 degrees C (growth rate = 0.19 - 0.22 per day) and 4 to 14 degrees C (growth rate = 0.13 - 0.16 per day), respectively. In constrast, optimal growth temperatures for Navicula UMACC 231 and Chlamydomonas UMACC 229 were 4 degrees C (growth rate = 0.34 per day) and 6 to 9 degrees C (growth rate = 0.39 - 0.40 per day), respectively. The protein content of the Antarctic algae was markedly affected by culture temperature. All except Navicula UMACC 231 and Stichococcus UMACC contained higher amount of proteins when grown at low temperatures (6-9 degrees C). The percentage of PUFA, especially 20:5 in Navicula UMACC 231 decreased with increasing culture temperature. However, the percentages of unsaturated fatty acids did not show consistent trend with culture temperature for the other algae studied.

There are three spreadsheets available in the download file.

ASAC_2590 - provides detail about where each species of algae was collected from.
ASAC_2590a - provides data from Teoh Ming-Li et al (2004)
ASAC_2590b - provides data from Wong Chiew-Yen et al (2004)

The fields in this dataset are:

Isolate
Culture Collection number
Origin (Location)
Fatty acids
saturated fatty acids
polyunsaturated fatty acids
monounsaturated fatty acids
Temperature
growth rate
PAR
UVB

Related URL

Link: GET DATA

Description: Download point for the data

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: -66.2

S: -66.3

E: 110.5

W: 110.4

Temporal Coverage

Start Date: 2001-01-31

Stop Date: 2004-02-27

Location Keywords

CONTINENT > ANTARCTICA > Windmill Islands

GEOGRAPHIC REGION > POLAR

Science Keywords

BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE

BIOLOGICAL CLASSIFICATION > PLANTS

ISO Topic Category

BIOTA

OCEANS

Quality The dates provided in temporal coverage are approximate only.

Access Constraints The dataset detailing species list, culture number, and sampling location, is available for download from the url given below.

Use Constraints This data set conforms to the PICCCBY Attribution License
(http://creativecommons.org/licenses/by/3.0/).

Ancillary Keywords

CHLAMYDOMONAS

CHLORELLA

Data Set Progress

COMPLETE

Data Center

Australian Antarctic Data Centre, Australia

Data Center URL: http://data.aad.gov.au

Data Center Personnel
Name: DATA OFFICER AADC Phone: +61 3 6232 3244 Fax: +61 3 6232 3351 Email: metadata at aad.gov.au Contact Address: Australian Antarctic Division 203 Channel Highway City: Kingston Province or State: Tasmania Postal Code: 7050 Country: Australia

Distribution

Distribution Media: HTTP

Distribution Size: 11 kb

Distribution Format: csv, excel

Fees: free

Personnel

SIEW MOI PHANG

Role: INVESTIGATOR

Role: TECHNICAL CONTACT

Role: DIF AUTHOR

Phone: 603 7967 4610

Fax: 603 7967 4699

Email: phang at um.edu.my

Contact Address:

Institute of Biological Sciences

Faculty of Science, and

Head, University of Malaya Maritime Research Centre (UMMReC),

University of Malaya

City: Kuala Lumpur

Postal Code: 50603

Country: Malaysia

CHU WAN-LOY

Role: TECHNICAL CONTACT

Phone: 603 8656 7228

Fax: 603 8656 7229

Email: wanloy_chu at imu.edu.my

Contact Address:

HUman Biology Section

University of Malaya

Plaza Komanwel, Bukit, Jalil

International Medical University

City: Kuala Lumpur

Postal Code: 57000

Country: Malaysia

Publications/References

Teoh Ming-Li, Chu Wan-Loy, Harvey Marchant and Phang Siew-Moi (2004), Influence of culture temperature on the growth, biochemical composition and fatty acid profiles of six Antarctic microalgae, Journal of Applied Phycology, 16, 1-10

Wong Chiew-Yen, Chu Wan-Loy, Harvey Marchant and Phang Siew-Moi (2004), Growth responsem biochemical composition and fatty acid profiles of four Antarctic microalgae subjceted to UV radiation stress., Malaysian Journal of Science, 23, 2, 103-118

Creation and Review Dates

DIF Creation Date: 2004-02-17

Last DIF Revision Date: 2011-06-16

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