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Table 2 Morphological and physiological characteristics of 10 Indian Dunaliella strains

From: Phenotypic and genetic characterization of Dunaliella (Chlorophyta) from Indian salinas and their diversity

Groups

Strain Code

Cell colour

Cell shape

Flagella length

Stigma

Pyrenoid

Refractile granules

Mode of reproduction observed

β Carotene normal/stress (pg/cell)

Salinity optimum

Identified as

I

MBTD-CMFRI-S135

Green to red

Ovoid, spherical, cylindrical

1.3 or 1.5 to cell length

Not clearly visible or diffuse

Large with distinct amylosphere

Absent

Cell division

8.68/22.94

1.5M NaCl

D. salina

MBTD-CMFRI-S089

Green to red

Ovoid, spherical

1.3 to cell length

Not visible/ Diffuse large

Large with distinct amylosphere

Absent

Cell division

6.53/23.36

1.5M NaCl

D. salina

II

MBTD-CMFRI-S118

Green to orange

Ovoid spherical

1.5 to cell length

One; large, red, median, diffuse

Small with amylosphere

Absent

Sexual, cell division

2.11/3.47

2.5M NaCl

Dunaliella sp.

MBTD-CMFRI-S121

Green

Ovoid pyriform

1.5-2 to cell length

One; large, red, median, distinct

Large with amylosphere

Absent

Sexual, cell division

1.59/2.17

1.5M NaCl

Dunaliella sp.

MBTD-CMFRI-S086

Green

Ovoid, oval or pyriform

1.5- 2 to cell length

One; Small, red, median, distinct

Small with amylosphere

Present

Sexual, cell division

2.68/3.41

0.5 M NaCl

Dunaliella sp.

III

MBTD-CMFRI-S115

Green

Ovoid, oval or fusiform

1.3 to cell length

One; small, red, anterior, distinct

Small with amylosphere

Absent

Palmella, aplanospores

1.05/1.99

1.5M NaCl

D. viridis?

MBTD-CMFRI-S122

Green

Oval, cylindrical,

1.3 to cell length

One; large, red, anterior, distinct,

Large, Amylosphere

Present

Palmella stage

0.67/1.78

1.5M NaCl

D. viridis?

MBTD-CMFRI-S133

Yellow green

Fusiform, Elliptical

1.3 to cell length

One, Two at lower salinity; small, red, median, distinct

Small, with amylosphere

Absent

Cell division, Palmella, aplanospores

0.51/1.26

1.5M NaCl

D.viridis/D. bioculata?

IV

MBTD-CMFRI-S125

Green

Cylindrical fusiform

Equal or 1.3 to cell length

One, large, red, anterior, distinct

Small, with distinct separate starch grains

Absent

Cell division

0.70/1.8

1.5M NaCl

D. minuta?

V

MBTD-CMFRI-S147

Green

Oval, fusiform

1.5 or 2 to cell length

One, large, red, median distinct

Large with amylosphere

Present

Palmella (dominant stage), Cell division

0.89/6.7

1.5M NaCl

Dunaliella sp.

  1. Grouping of the subsets was formed based on common morphological features including cell size and β-carotene accumulation at high salinity and light (stress).