Rice (Oryza sativa L.) is considered salt sensitive compared to other cereals. Recent transcriptome studies on salinity stress response in barley revealed indicates that exogenous application of jasmonic acid (JA) can ameliorate growth reductions brought about by salinity stress. It is hypothesized that JA plays a role in adaptation of some plants to salinity stress. In this study, we investigated whether or not application of exogenous JA to salt-sensitive rice (indica cultivar IR29) can also ameliorate salinity stress. All three treatment employed, salinity, JA pretreatment, and JA-pretreatment salinity-stress reduced growth as measured by shoot and root dry weight of shoot and root length. JA pretreatment prior to salinity stress did not appear to ameliorate growth reductions due to salinity stress. Gas-exchange responses were also compared after salinity stress, JA pretreatment, and JA pretreatment followed by salinity stress. Consistent with our finding on growth parameter, pretreatment with JA did not alleviated photosynthetic inhibition caused by salinity stress. Also, the JA-pretreated salt stressed plants accumulated dramatically higher levels of Na⁺ in the shoot tissue compared to untreated salt-stressed plants. Ions such as Ca²⁺ and Cl^- also increased while other ion such as Mg²⁺ and K⁺ decreased. We detected no change in S levels. Analysis of selectivity constants for K:Na, Ca:Na, K:Mg, and Ca:Mg indicated that ion homeostasis was greatly affected by JA pretreatment. We concluded that JA pretreatment in rice does not ameliorate salinity stress, possible due to increased accumulation of toxic ions and changes in ion homeostasis.