“…Many olfactory receptors (~350 in humans and ~1,000 in mice) are produced by animals (Buck, 2004 ) because their survival heavily depends on the ability to track foods, find mates, and recognize threats via volatile cues. Plant VCs function as homing cues to pollinators, seed dispersers, and parasitoids (Baldwin, 2010 ; Herrmann, 2010 ), mediate communication within and between plants (Baldwin, 2010 ), and protect plants from diverse predators (Baldwin, 2010 ; Huang et al, 2012 ; Arasimowicz-Jelonek and Floryszak-Wieczorek, 2014 ). Similarly, microbial VCs appear to participate in microbial interactions (Bailly and Weisskopf, 2012 ; Bennett et al, 2012 ; Bitas et al, 2013 ) and also affect plant growth, development, and stress resistance (Bailly and Weisskopf, 2012 ; Bitas et al, 2013 ; Li et al, 2016 ; Li and Kang, 2018 ).…”