MBON01 [FBbt_00100234]

A bilateral, glutamatergic neuron whose cell body is located on the superior neuropils, anterior to the pars intercerebralis of the adult brain (Tanaka et al., 2008; Aso et al., 2014. The cell body fiber travels ventrally towards the medial lobe, arborizing in the anterior layer of beta’ lobe slice 2 and the most medial segment of the gamma lobe (slice 5) (Tanaka et al., 2008. The main fiber then enters the opposite gamma lobe, arborizes in the beta’ lobe slice 2 and gamma lobe slice 5. The major axon projects ipsilaterally to the superior medial protocerebrum (SMP), whereas a very thin axon projects to the crepine and SMP in the other hemisphere. There is one neuron of this type per hemisphere (Aso et al., 2014; Li et al., 2020. It develops from the larval MBON-k1 (Truman et al., 2023. These neurons have synaptic connections with protocerebral anterior medial (PAM) cluster neurons in the SMP and in the tip of the mushroom body horizontal lobe (Owald et al., 2015. It is involved in the retrieval of long term memory associated with water reward (Shyu et al., 2017 as well as medium and long term aversive memory (Bouzaiane et al., 2015. (Aso et al., 2014, Truman et al., 2023, Bouzaiane et al., 2015, Tanaka et al., 2008, Owald et al., 2015, Li et al., 2020, Shyu et al., 2017)