CYANOBACTERIAL TOXINS - Cyanobacteria - page 500

Table 2: contd....

MC-Variant Xaa(2) Zaa(4) Organism Reference(s)

MC-WR 1-tryptophane Arginine Microcystis spp.* Namikoshi et al . (1992a)

MC-LW Leucine 1-tryptophane M . aeruginosa Bateman et al . (1995)

MC-L-Glu
[E(ome)]

Glutamate δ-methylester

[E(ome)]

Anabaena sp. strain
186

Namikoshi et al . (1998)

Azevedo et al . (1994);
Diehnelt et al . (2006)
MC-LL Leucine Leucine M . aeruginosa Craig et al . (1993)
MC-HilR Homo-isoleucine Arginine M . aeruginosa Namikoshi et al . (1995)
MC-VF Valine Phenylalanine M . aeruginosa Bateman et al . (1995)
*Represents natural bloom samples/natural materials and the rest are from axenic cultures of the respective
cyanobacteria.

MC-LF Leucine Phenylalanine M . aeruginosa strain

B2666

Table 3: MC-Variants of cyanobacteria with substitutions in 1st to 7th positions of the general structure of microcystin.

MC-Variant a Organism Reference(s)

[D-Asp 3 , Dha 7 ] MC-LR M . aeruginosa

Anabaena sp. strain 202A1; 202A2

Botes et al . (1985); Harada et al . (1991b)
Sivonen et al . (1992a)

[D-Asp 3 ] MC-LR A . fl os-aquae ;

M . viridis*
Anabaena sp. strain 60; Anabaena sp. strain 90, 141;
A . fl os - aquae
O. agardhii
Antarctic cyanobacterial comunities*

Krishnamurthy et al .
(1989); Harada et al . (1990b, 1991a)
Sivonen et al . (1992a)

Luukkainen et al . (1993)
Jungblut et al . (2006)

[Dha 7 ] MC-LR M . aeruginosa

Anabaena sp. strain 202A1; strain 202A2
O . agardhii

Harada et al . (1991b)
Sivonen et al . (1992a)
Luukkainen et al . (1993)

[D-Asp 3 , ADM Adda 5 ] MC-LR Nostoc sp.
Nostoc sp. strain 152
Nostoc sp. strain IO-102-I

Namikoshi et al . (1990)
Sivonen et al . (1990a)
Oksanen et al . (2004)

[D-Asp 3 , Dha 7 ] MC-RR O . agardhii *

Anabaena strain 202A1

Krishnamurthy et al . (1989);
Luukkainen et al . (1993, 1994);
Sivonen et al . (1992a)

[L-Ser 7 ] MC-LR Microcystis spp.*

M . aeruginosa strain B2666

Namikoshi et al . (1992c)
Diehnelt et al . (2006)

[ADM Adda 5 ] MC-LR Nostoc sp.

Nostoc sp. strain 152
Nostoc sp. strain IO-102-I

Namikoshi et al . (1990a)
Sivonen et al . (1990a, 1992b)
Oksanen et al . (2004)

[D-Asp 3 , ADM Adda 5 ] MC-
LHar

Nostoc sp. strain 152 Sivonen et al . (1992b)

[D-Asp 3 ] MC-RR O . agardhii Meriluto et al . (1989); Luukkainen et

al . (1993)
Sivonen et al . (1992a)
Briand et al. (2005)

Anabaena sp. strain 60; sp. strain 141; A . fl os - aquae
P . rubescens *

[ADM Adda 5 ] MC-LHar Nostoc sp.

Nostoc sp. strain 152

Namikoshi et al . (1990)
Sivonen et al . (1990a, 1992b)

[D-Ser 1 , ADM Adda 5 ] MC-LR Nostoc sp. strain 152 Sivonen et al . (1992b)

[ADM Adda 5 , MeSer 7 ] MC-LR Nostoc sp. strain 152 Sivonen et al . (1992b)

Table 3: contd....