Seasonal variation of phenolic content in galled and non-galled tissues of Calliandra brevipes Benth (Fabaceae: Mimosoidae)

two species, tanaostigmodes ringueleti and t. mecanga, induce distinct galls on calliandra brevipes benth (fabaceae: mimosoidae), a globose and a fusiform gall morphotype. seasonal changes of phenolic content in the tissues of the two distinct galls were compared to those of non-galled leaves and stems of the host plants over one year. the variation in the phenolic content profiles was similar in both non-galled and galled tissues, and was primarily associated with changes in the levels of rainfall, indicating a direct response to hydric stress. in periods of drastic changes in water precipitation, the alterations were significantly higher in non-galled than in galled tissues suggesting that the gall inducers might limit the variation in the phenolic concentration for their own benefit.