nitrogen ixing microbes

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Identification_Information:
Citation:
Citation_Information:
Originator: School of Biological Sciences, USM
Publication_Date: not yet
Title: nitrogen ixing microbes
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Description:
Abstract:
Nitrogen fixation is essential because it is the only way that organisms can attain nitrogen directly from the atmosphere. Nitrogen-fixing bacteria can exist either in the form of symbiotic relationships with host plants or as free-living nitrogen fixers. In aquatic environments, blue - green alga is an important free-living nitrogen fixer. Cyanobacteria are also one of very few groups of organisms that can convert inert atmospheric nitrogen into an organic form, such as nitrate or ammonia. The specific objectives of the project: • To isolate and characterize new N2-fixing and denitrification microorganisms and to detect new genetic information involved in nitrogen fixation and denitrification. • To study the biodiversity denitrification genes using a molecular approach • To localize the microhabitat of N2-fixing and denitrifying microorganisms in selected Antarctic ecosystems to focus isolation strategies on that size fraction. Water samples were collected using Wiscosin plankton nets with a 30 μm mesh-size. A total of 40 L of water were filtered through the plankton net. Samples were then preserved with Lugol’s iodine solution and 5% formalin buffer. All samples will be transferred to the laboratory for further cell counting and identification using microscopic examination. Cyanobacterial identification and enumeration from the plankton samples will be carried out.
Purpose:
Not Available
Supplemental_Information:
Not Available
Status:
Progress: In Work
Maintenance_and_Update_Frequency: As needed
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West_Bounding_Coordinate: Not Available
East_Bounding_Coordinate: Not Available
North_Bounding_Coordinate: Not Available
South_Bounding_Coordinate: Not Available
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > BIODIVERSITY FUNCTIONS
Theme_Keyword: PLANKTON NETS
Theme_Keyword: MARP > MALAYSIAN ANTARCTIC RESEARCH PROGRAM
Theme_Keyword: BIOTA
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > ANTARCTICA
Place_Keyword: GEOGRAPHIC REGION > POLAR
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: ABDUL RAHIM RASHIDAH
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Universiti Sains Malaysia
State_or_Province: Penang
Country: Malaysia
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Data_Quality_Information:
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Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
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Process_Description:
Not Available
Process_Date: Unknown
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: MY/MARC > MALAYSIAN ANTARCTIC RESEARCH PROGRAM
Contact_Person: TALHA HASSAN
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: B303, 3RD FLOOR
Address: IPS BUILDING
Address: UNIVERSITY OF MALAYA
City: KUALA LUMPUR
Postal_Code: 50603
Country: MALAYSIA
Contact_Voice_Telephone: 60379608950
Contact_Facsimile_Telephone: 60379605935
Contact_Electronic_Mail_Address: talha@um.edu.my
Contact_Electronic_Mail_Address: talhady@gmail.com
Resource_Description: MARPusm06
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.myantarctica.com.my/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.myantarctica.com.my/
Access_Instructions:
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20090804
Metadata_Review_Date: 20090807
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: TALHA HASSAN
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: B303, 3RD FLOOR
Address: IPS BUILDING
Address: UNIVERSITY OF MALAYA
City: KUALA LUMPUR
Postal_Code: 50603
Country: MALAYSIA
Contact_Voice_Telephone: 60379608950
Contact_Facsimile_Telephone: 60379605935
Contact_Electronic_Mail_Address: talha@um.edu.my
Contact_Electronic_Mail_Address: talhady@gmail.com
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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