A7921

Agar

suitable for plant cell culture, powder

• Synonym(s): Agar-agar, Gum agar
• Linear Formula: (C₁₂H₁₈O₉)_n
• CAS Number: 9002-18-0
• EC Number: 232-658-1
• MDL number: MFCD00081288
• UNSPSC Code: 50405901
• eCl@ss: 42040102
• NACRES: NA.21

Properties

• biological source: algae (Rhodophyceae)
• form: powder
• technique(s): cell culture | plant: suitable
• transition temp: congealing temperature 30-35 °C
• application(s): agriculture
• storage temp.: room temp
• InChI: 1S/C14H24O9/c1-5-8(16)13-11(7(21-5)4-20-13)23-14-10(18)12(19-2)9(17)6(3-15)22-14/h5-18H,3-4H2,1-2H3/t5?,6-,7?,8-,9+,10-,11?,12+,13+,14?/m1/s1
• InChI key: GYYDPBCUIJTIBM-DYOGSRDZSA-N

Description

General description

Agar contains agarose and agaropectin, with agarose being the major gelling heteropolysaccharide. Agarose contains β-d-galactose and 3,6-anhydro-α-l-galactose, linked by glycosidic bonds β(1-4) called the neoagarobiose. It also has agarobiose with same disaccharide units with α(1-3) linkage. The major source of agar is the cell wall of seaweed from Rhodophyceae family.

Application

Agar has been used as a component of EDMm (modified version of Eucalyptus dunnii basal medium (EDM)) for development of shoots of Eucalyptus dunnii clones. It has also been used as a component of Murashige and Skoog medium for in vitro culture of Strain TC09 of Cladosporium sphaerospermum.

Agar has been used as a component

• of Gamborg′s B5 regeneration medium
• of Murashige and skoog (MS) medium for the germination of Hypericum triquetrifolium Turra seeds
• in shoot inducing and naphthalene acetic acid pretreatment medium for the regeneration of Arabidopsis thaliana seedlings

Biochem/physiol Actions

Agar is majorly used as microbial solid culture media. It is used in the range of 0.5 to 1.0% (w/v) to solidify plant tissue culture media. It is essential for in vitro root development.

Other Notes

Purified for research and protoplast culture.

Preparation Note

Typical working concentration: 6-12 g/L.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves