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- W2023981839 abstract "The molecular mechanisms underlying the onset of Fe-deficiency chlorosis and the maintenance of photosynthetic function in chlorotic chloroplasts are relevant to global photosynthetic productivity. We describe a series of graded responses of the photosynthetic apparatus to Fe-deficiency, including a novel response that occurs prior to the onset of chlorosis, namely the disconnection of the LHCI antenna from photosystem I (PSI). We propose that disconnection is mediated by a change in the physical properties of PSI-K in PSI in response to a change in plastid Fe content, which is sensed through the occupancy, and hence activity, of the Fe-containing active site in Crd1. We show further that progression of the response involves remodeling of the antenna complexes-specific degradation of existing proteins coupled to the synthesis of new ones, and establishment of a new steady state with decreased stoichiometry of electron transfer complexes. We suggest that these responses are typical of a dynamic photosynthetic apparatus where photosynthetic function is optimized and photooxidative damage is minimized in graduated responses to a combination of nutrients, light quantity and quality." @default.
- W2023981839 created "2016-06-24" @default.
- W2023981839 creator A5027379612 @default.
- W2023981839 date "2002-12-16" @default.
- W2023981839 modified "2023-10-16" @default.
- W2023981839 title "Adaptation to Fe-deficiency requires remodeling of the photosynthetic apparatus" @default.
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- W2023981839 doi "https://doi.org/10.1093/emboj/cdf666" @default.
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