Symbiotic Fungi: Principles and Practice (Soil Biology)

396 K. Haselwandter and G. Winkelmann
H 2 N
O
O
H 3 C
O
N
CH 3
O
O
O
Fe
N
O
O
O
H
O
N
NH 2
COCH 3
N
O
O O N
CH 3
N
O
O
O
O
NH
Fe
O
NH
O
R1
O
originally isolated from Zygomycetes (Drechsel et al. 1991, 1992; Winkelmann
1992). Whether some mycorrhizal fungi may produce, in addition to hydroxamates,
also such polycarboxylate-type siderophores still remains an open question.
O
Coprogen M r = 821
O
NH 2
CH 3
H 3 C
N
R2
Coprogen
R1 = R2 =
HO
CH 3
(A)
Neocoprogen I : R 1 = CH 3 , R 2 = A
Neocoprogen II: R 1 = R 2 = CH 3
Fusigen M r = 779 Triacetylfusarinine C M r = 905
Fig. 25.3 Fungal coprogens and fusarinines
HOOC
Fig. 25.4 Rhizoferrin
HO
O
H
N
COOH
O
Rhizoferrin M r = 436
N
H
NH
O
O
H 3 C
O
O
N
CH 3
O
O
O
COOH
Fe
N
O
O
O
COOH
OH
O
NH
O
N
CH 3
O
CH 3
NH
O
O
CH 3