At a given soil moisture, leaf water status is determined by plant hydraulic characteristics and transpiration (Sperry et al. 2002). Some studies in woody plant species found that hydraulic conductance can determine leaf water status, influencing gas exchange (Tyree 2003, Brodribb et al. 2007, McCulloh et al. 2016). Hydraulic conductance can also control plant responses to stresses associated with water (Mitchell et al. 2013, Nardini et al. 2013) and temperature (Sellin and Kupper 2007, McCulloh et al. 2016). Recent studies found that elevated temperature can exacerbate the risks of hydraulic failure and carbon starvation when soil moisture is limited (Yan et al. 2020). However, studies on how plants adjust water physiology for maximizing carbon assimilation under warming remain limited (Vico et al. 2019). More intra- and inter-species studies of whole plant vascular systems under warming conditions are needed to predict the responses of whole plants to changes in