Before revision:  The non-heme iron at the reaction center, the toroidal shape of the light harvestor , the functional role played by the long-lasting spectrometric signal observed, and the photon anti-bunching observed suggest non-reciprocity.
After revision:  The non-heme iron at the reaction center, and presented reasons for each module of the light harvester being composed of one carotenoid, two short \alpha-helical polypeptides and three bacteriochlorophylls; we explained also the toroidal shape of the light harvester, the upper bound of the characteristic length of the light harvestor , the functional role played by the long-lasting spectrometric signal observed, and the photon anti-bunching observed suggest non-reciprocity.