Articles that will be discussed at journal club on December 10, 2013.

(1) Orona-Tamayo et al (2013) Exclusive rewards in mutualisms: ant proteases and plant protease inhibitors create a lock–key system to protect Acacia food bodies from exploitation. Mol Ecol 22: 4087–4100.

(2) Bronstein (2013) Proteases hold the key to an exclusive mutualism. Mol Ecol 22: 3882–3884. [News & Views]

(3) Palmer et al (2010) Synergy of multiple partners, including freeloaders, increases host fitness in a multispecies mutualism. PNAS 107: 17234-17239.