Strain number NIES-50
Phylum Cyanophyta
Class Cyanophyceae
Scientific name Aulosira laxa Kirchner ex Bornet & Flauhault
Synonym
Former name Aulosira fertilissima Ghose (in IAM)
Common name Blue-green alga ; Cyanobacteria
Locality (Date of collection) Pusa, India
Latitude / Longitude
Habitat (Isolation source) Freshwater (Paddy soil)
History < IAM (1983);
Isolator (Date of isolation) Venkataraman, G. S.
Identified by
State of strain Cryopreservation; Unialgal; Non-clonal; Axenic[2018 Feb]
Culture condition
(Preculture condition)
Medium: MDM (agar)
Temperature: 20 (25) C
Light intensity: 4-10 (14-16) µmol photons/m2/sec, L/D cycle: 10L:14D
Duration: 4 M (14 D)
Gene information nearly complete genome ( AP018307 ) , 16S-ITS-23S ( KJ920354 KJ920353 ) , Plasmid DNA ( AP018308-AP018313 )
Cell size (min - max) - 6 μm
Organization
Characteristics Nitrogen fixation (aerobic condition, Modified BG-110 medium, N-Free medium) ; Genome decoded strain
Other strain no. Other collection strain no. : IAM M-128
Remarks Cryopreserved; Axenic
Movie
Related strain information
(Used in same reference)
Strain number Scientific name Common name Habitat (Isolation source) Characteristics
NIES-198
Closterium tumidum Desmid Freshwater (Pond sediment) Homothallic
NIES-847
Limnothrix redekei Blue-green alga ; Cyanobacteria Freshwater (Lake water) Cyanobacterial water bloom (aoko) ; Planktonic
NIES-451
Closterium praelongum Desmid Freshwater (Pond sediment) Homothallic
NIES-540
Uronema gigas Green alga Freshwater (River water)
NIES-532
Stigeoclonium fasciculare Green alga Freshwater (Lake water)
Reference
Ichimura, T. & Itoh, T. 1977 17. Preservation methods of microalgae (I) [17. Bisaisôrui no hozonhô (I)]. In Preservation methods of microorganisms [Biseibutsu Hozonhô], Ed. by Nei, T., University of Tokyo Press, Tokyo, pp. 355-373 (in Japanese).
Strain(s): 19, 21, 22, 23, 24, 27, 28, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40, 41, 44, 45, 46, 47, 48, 49, 50, 122, 123, 127, 131, 144, 152, 173, 175, 179, 180, 181, 182, 183, 185, 198, 200, 203, 206, 217, 226, 227, 241, 266, 267, 268, 295, 309, 310, 334, 338, 379, 436, 448, 450, 455, 527

Mori, F., Erata, M., Watanabe, M. M. 2002 Cryopreservation of cyanobacteria and green algae in the NIES-Collection. Microbiol. Cult. Coll., 18, 45-55.
Keywords: cryopreservation; cyanobacteria; green algae; FDA staining method; NIES-Collection
Strain(s): 19, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 44, 45, 46, 50, 51, 52, 53, 54, 55, 56, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 73, 74, 75, 76, 77, 78, 79, 80, 81, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 119, 120, 122, 123, 125, 127, 128, 129, 130, 131, 132, 133, 134, 135, 137, 138, 139, 144, 147, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 162, 163, 164, 165, 166, 167, 168, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 185, 186, 187, 188, 189, 191, 192, 193, 194, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 224, 226, 227, 228, 229, 230, 231, 232, 241, 242, 243, 244, 245, 246, 248, 257, 259, 261, 263, 266, 267, 268, 287, 288, 289, 290, 294, 295, 297, 298, 299, 300, 301, 302, 303, 305, 306, 308, 309, 310, 312, 313, 329, 334, 337, 338, 339, 340, 341, 342, 349, 351, 359, 360, 361, 362, 375, 378, 379, 380, 382, 384, 385, 390, 394, 396, 397, 398, 415, 416, 418, 419, 421, 422, 423, 424, 425, 426, 427, 428, 429, 430, 431, 432, 433, 434, 436, 437, 438, 439, 440, 446, 447, 448, 449, 450, 451, 452, 453, 454, 455, 456, 457, 458, 459, 460, 464, 468, 469, 474, 478, 479, 480, 481, 503, 504, 505, 506, 507, 509, 510, 512, 514, 515, 522, 523, 524, 527, 528, 529, 530, 531, 532, 536, 537, 538, 539, 540, 541, 542, 543, 544, 545, 546, 564, 565, 566, 567, 568, 569, 570, 571, 572, 573, 574, 575, 576, 577, 578, 579, 580, 581, 582, 583, 584, 585, 592, 593, 594, 595, 596, 597, 598, 604, 610, 628, 630, 631, 632, 633, 634, 635, 636, 637, 638, 639, 640, 641, 642, 643, 644, 645, 646, 647, 648, 649, 650, 651, 652, 653, 654, 655, 656, 657, 658, 659, 660, 661, 662, 663, 664, 665, 666, 667, 672, 685, 686, 687, 688, 689, 690, 691, 692, 693, 694, 717, 718, 719, 720, 721, 722, 723, 724, 725, 726, 727, 728, 729

Watanabe, M. M., Kasai, F., Hiwatari, T., Suda, S., Nei, T. 1984 Cryopreservation of microalgae in liquid nitrogen - Survival of algal cultures after freezing. Jpn. J. Freez. Dry., 30, 23-26 (in Japanese with English title).
Strain(s): 18, 19, 21, 24, 26, 29, 31, 39, 40, 41, 44, 45, 46, 50, 73, 74, 75, 76, 77, 80, 81, 87, 88, 89, 90, 91, 93, 95, 98, 99, 100, 101, 120, 122, 131, 135, 137, 144, 151, 204, 207, 213, 257, 263, 379, 415, 2219, 2235, 2239, 2579

Hosoya, R., Hamana, K., Isobe, M., Yokota, A. 2005 Polyamine distribution profiles within Cyanobacteria. Microbiol. Cult. Coll., 21, 3-8.
Keywords: cyanobacteria; homospermidine; polyamine; spermidine
Strain(s): 19, 21, 22, 28, 30, 34, 37, 41, 44, 45, 50, 73, 78, 79, 80, 81, 204, 208, 510, 512, 515, 592, 593, 610, 843, 846, 847, 2093, 2096, 2098, 2100, 2102, 2107, 2108, 2118, 2119, 2123, 2124, 2125, 2126, 2128, 2129, 2131, 2132, 3259, 3275, 3276, 3277

Suradkar, A., Villanueva, C., Gaysina, LA., Casamatta, DA., Saraf, A., Dighe, G., Mergu, R., Singh, P. 2017 Nostoc thermotolerans sp. nov., a soil-dwelling species of Nostoc (Cyanobacteria). Int. J. Syst. Evol. Microbiol., 67, 1296-1305.
Keywords: cyanobacteria; Taxonomy; Nostoc
Strain(s): 21, 40, 50, 3756
PubMed: 28109209
DOI: 10.1099/ijsem.0.001800

Hirose, Y., Ohtsubo, Y., Misawa, N., Yonekawa, C., Nagao, N., Shimura, Y., Fujisawa, T., Kanesaki, Y., Katoh, H., Katayama, M., Yamaguchi, H., Yoshikawa, H., Ikeuchi, M., Eki, T., Nakamura, Y., Kawachi, M. 2021 Genome sequencing of the NIES Cyanobacteria collection with a focus on the heterocyst-forming clade. DNA Res., 28, dsab024 (article ID).
Keywords: Cyanobacteria; genome; heterocyst; culture collection; taxonomy
Strain(s): 19, 21, 22, 23, 25, 37, 50, 73, 267, 806, 932, 2098, 2100, 2107, 2109, 2111, 2130, 2135, 3275, 3585, 3757, 3974, 4070, 4073, 4074, 4075, 4101, 4102, 4103, 4106
PubMed: 34677568
DOI: 10.1093/dnares/dsab024

Giordano, M., Goodman, C. A., Huang, F., Raven, J. A., Ruan, Z. 2022 A mechanistic study of the influence of nitrogen and energy availability on the NH4+ sensitivity of nitrogen assimilation in Synechococcus. J. Exp. Bot., 73, 5596-5611.
Keywords: Ammonium; cyanobacteria; glutamine synthetase; limitation; nitrate reductase; nitrite reductase; NtcA regulation; N metabolism
Strain(s): 25, 50, 204, 267, 843, 970, 981, 2107, 2134, 2135, 2481, 2549, 3709, 3754, 3756, 3757, 4074
PubMed: 35595516
DOI: 10.1093/jxb/erac219

Nowruzi, B., Hutarova, L., Vešelenyiova, D., Metcalf, J. S. 2024 Characterization of Neowestiellopsis persica A1387 (Hapalosiphonaceae) based on the cpcA, psbA, rpoC1, nifH and nifD gene sequences. BMC Ecol. Evol., 24, 57 (article ID).
Keywords: Cyanobacteria; Phylogenetic analysis; Neowestiellopsis persica, cpcA
Strain(s): 21, 22, 23, 25, 50, 73, 267, 592, 2098, 2100, 2107, 3275, 3754, 3756, 3974, 4073, 4074, 4101, 4103, 4106
PubMed: 38711016
DOI: 10.1186/s12862-024-02244-z

Pham, H. T. L., Ngo, T. T., Tran, T. V., Duong, T. A., Tran, L. D., Tran, A. T. T., Nguyen, V. T. H., Nguyen, S. V. 2025 Classification of Nostoc-like cyanobacteria isolated from paddy soil into Aliinostoc, Aulosira, and Desmonostoc. Front. Microbiol., 16, 1581725 (article ID).
Keywords: Aliinostoc; Aulosira; Desmonostoc; cyanobacteria classification; Nostoc-like morphology; paddy soil; polyphasic approach
Strain(s): 50
DOI: 10.3389/fmicb.2025.1581725

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