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. 2006 Jun;141(2):391-6.
doi: 10.1104/pp.106.082040.

Production and scavenging of reactive oxygen species in chloroplasts and their functions

Kozi Asada  1
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Production and scavenging of reactive oxygen species in chloroplasts and their functions

Kozi Asada. Plant Physiol. 2006 Jun.
No abstract available

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Figures

Figure 1.
Figure 1.
Productions of 1O2 in PSII and of O2− in PSI in chloroplast thylakoids. White arrows represent the photoexcitation of reaction center Chl and the electron flow under the photon intensity where all of the electrons generated are utilized for the CO2 assimilation (P < A or P = A). Black arrows represent where photon intensity exceeds the capacity of the flux of electron transport and the flux to CO2 assimilation (P > A). To make it simple, the stromal scavenging system of ROS is omitted and the thylakoidal scavenging system only is shown. Alternative oxidase is a four-electron oxidase using plastoquinol as the electron donor (2 PQH2 + O2 → 2 PQ + 2 H2O) without releasing ROS and functions in chlororespiration in the dark (Aluru and Rodermel, 2004). NDH, NAD(P)H dehydrogenase complex; PQ, plastoquinone; PQH2, plastoquinol.
See this image and copyright information in PMC

References

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