@article{fdi:010046131, title = {{I}dentification of novel genes putatively involved in the photosystem synthesis of {B}radyrhizobium sp {ORS} 278}, author = {{J}aubert, {M}arianne and {H}annibal, {L}aure and {F}ardoux, {J}o{\¨e}l and {G}iraud, {E}ric and {V}erm{\'e}glio, {A}.}, editor = {}, language = {{ENG}}, abstract = {{I}n aerobic anoxygenic phototrophs, oxygen is required for both the formation of the photosynthetic apparatus and an efficient cyclic electron transfer. {M}utants of {B}radyrhizobium sp. {ORS}278 affected in photosystem synthesis were selected by a bacteriochlorophyll fluorescence-based screening. {O}ut of the 9,600 mutants of a random {T}n5 insertion library, 50 clones, corresponding to insertions in 28 different genes, present a difference in fluorescence intensity compared to the {WT}. {B}esides enzymes and regulators known to be involved in photosystem synthesis, 14 novel components of the photosynthesis control are identified. {A}mong them, two genes, hs{IU} and hs{IV}, encode components of a protein degradation complex, probably linked to the renewal of photosystem, an important issue in {B}radyrhizobia which have to deal with harmful reactive oxygen species. {T}he presence of homologs in non-photosynthetic bacteria for most of the regulatory genes identified during study suggests that they could be global regulators, as the {R}eg{A}-{R}eg{B} system.}, keywords = {{P}hotosystem regulation ; {A}erobic photosynthetic bacteria ; {B}radyrhizobium}, booktitle = {}, journal = {{P}hotosynthesis {R}esearch}, volume = {100}, numero = {2}, pages = {97--105}, ISSN = {0166-8595}, year = {2009}, DOI = {10.1007/s11120-009-9433-3}, URL = {https://www.documentation.ird.fr/hor/fdi:010046131}, }