Plant Roots—The Hidden Half for Investigating Salt and Drought Stress Responses and Tolerance

Plant roots are not just a mere organ involved in soil anchoring and nutrient absorption. But it is a tool used by plants to survive against adverse conditions that surround them since plants are sessile organisms which cannot move to escape stressful conditions. This chapter will focus on exposing the strategies that plants use to cope with two stress situations, namely drought and salinity. These strategies range from changes in the root external morphology as changes at the cellular level, where the permeability of the membranes and gene expression are changed.