BIOMOLECULES AND ENZYMES

Detailed explanation-1: -ABA: A Key Player under Drought Upon drought stress, ABA-mediated stomatal closure reduces water loss by decreasing transpiration rate. Moreover, ABA progressively increases hydraulic conductivity and stimulates root cell elongation, enabling plants recovery from water-limited conditions [21].

Detailed explanation-2: -It is well documented that water deficit results in an increase in the abscisic acid (ABA) content of plant tissues (Davies and Zhang, 1991; Pospíšilová, 2003). At the same time, ABA can modulate root hydraulic conductance in plants.

Detailed explanation-3: -Abscisic acid (ABA) is the most prominent plant hormone in response to water deficit conditions [35, 41].

Detailed explanation-4: -Abscisic acid is an important signaling phytohormone under drought stress (De Ollas et al., 2013). Abscisic acid plays a significant role in regulating stomatal closure, gene upregulation and compatible osmolyte synthesis.