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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).