Abstract
Recent studies of responses of cyanobacterial cells to salt stress have revealed that the NaCl-induced decline in the photosynthetic activities of photosystems II and I involves rapid and slow changes. The rapid decreases in the activities of both photosystems, which occur within a few minutes, are reversible and are associated with osmotic effects, which induce the efflux of water from the cytosol through water channels and rapidly increase intracellular concentrations of salts. Slower decreases in activity, which occur within hours, are irreversible and are associated with ionic effects that are due to the influx of Na+ and Cl- ions through K +(Na+) channels and, probably, Cl- channels, with resultant dissociation of extrinsic proteins from photosystems. In combination with light stress, salt stress significantly stimulates photoinhibition by inhibiting repair of photodamaged photosystem II. Tolerance of photosystems to salt stress can be enhanced by genetically engineered increases in the unsaturation of fatty acids in membrane lipids and by intracellular synthesis of compatible solutes, such as glucosylglycerol and glycinebetaine. In this review, we summarize recent progress in research on the effects of salt stress on photosynthesis in cyanobacteria.
| Original language | English |
|---|---|
| Pages (from-to) | 529-539 |
| Number of pages | 11 |
| Journal | Photosynthesis Research |
| Volume | 98 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - Oct 1 2008 |
| Externally published | Yes |
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Keywords
- Cyanobacteria
- Membrane lipids
- Photosystem I
- Photosystem II
- Salt stress
- Tolerance
ASJC Scopus subject areas
- Biochemistry
- Plant Science
- Cell Biology
Cite this
Salt stress inhibits photosystems II and I in cyanobacteria. / Allakhverdiev, Suleyman; Murata, Norio.
In: Photosynthesis Research, Vol. 98, No. 1-3, 01.10.2008, p. 529-539.Research output: Contribution to journal › Review article
}
TY - JOUR
T1 - Salt stress inhibits photosystems II and I in cyanobacteria
AU - Allakhverdiev, Suleyman
AU - Murata, Norio
PY - 2008/10/1
Y1 - 2008/10/1
N2 - Recent studies of responses of cyanobacterial cells to salt stress have revealed that the NaCl-induced decline in the photosynthetic activities of photosystems II and I involves rapid and slow changes. The rapid decreases in the activities of both photosystems, which occur within a few minutes, are reversible and are associated with osmotic effects, which induce the efflux of water from the cytosol through water channels and rapidly increase intracellular concentrations of salts. Slower decreases in activity, which occur within hours, are irreversible and are associated with ionic effects that are due to the influx of Na+ and Cl- ions through K +(Na+) channels and, probably, Cl- channels, with resultant dissociation of extrinsic proteins from photosystems. In combination with light stress, salt stress significantly stimulates photoinhibition by inhibiting repair of photodamaged photosystem II. Tolerance of photosystems to salt stress can be enhanced by genetically engineered increases in the unsaturation of fatty acids in membrane lipids and by intracellular synthesis of compatible solutes, such as glucosylglycerol and glycinebetaine. In this review, we summarize recent progress in research on the effects of salt stress on photosynthesis in cyanobacteria.
AB - Recent studies of responses of cyanobacterial cells to salt stress have revealed that the NaCl-induced decline in the photosynthetic activities of photosystems II and I involves rapid and slow changes. The rapid decreases in the activities of both photosystems, which occur within a few minutes, are reversible and are associated with osmotic effects, which induce the efflux of water from the cytosol through water channels and rapidly increase intracellular concentrations of salts. Slower decreases in activity, which occur within hours, are irreversible and are associated with ionic effects that are due to the influx of Na+ and Cl- ions through K +(Na+) channels and, probably, Cl- channels, with resultant dissociation of extrinsic proteins from photosystems. In combination with light stress, salt stress significantly stimulates photoinhibition by inhibiting repair of photodamaged photosystem II. Tolerance of photosystems to salt stress can be enhanced by genetically engineered increases in the unsaturation of fatty acids in membrane lipids and by intracellular synthesis of compatible solutes, such as glucosylglycerol and glycinebetaine. In this review, we summarize recent progress in research on the effects of salt stress on photosynthesis in cyanobacteria.
KW - Cyanobacteria
KW - Membrane lipids
KW - Photosystem I
KW - Photosystem II
KW - Salt stress
KW - Tolerance
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U2 - 10.1007/s11120-008-9334-x
DO - 10.1007/s11120-008-9334-x
M3 - Review article
VL - 98
SP - 529
EP - 539
JO - Photosynthesis Research
JF - Photosynthesis Research
SN - 0166-8595
IS - 1-3
ER -