*Drought Stress: Manifestation and Mechanisms of Alleviation in Plants DOI: http://dx.doi.org/10.5772/intechopen.102780*

(NAC); related to abscisic acid insensitive (ABI3)/VIVIPAROUS 1 (VP1) (RAV); WRKY; auxin response factor (ARF); and SQUAMOSA-promoter binding protein (SBP). The DBDs of the AP2/ERF, DREB, NAC, SBP, and WRKY are named as per the names of their respective TFs family, whereas DBDs of ABI3/VP1 and ARF family of TFs are named as B3 family [76].

Biochemical and molecular factors involved in the induction of processes to alleviate the detrimental impacts of water stress include transcription, stress responsive genes like TaNAC69 (wheat), AP37 & OSNAC10 (rice), NF-YB2 (maize) and abscisic acid [16]. Transgenic expression of different stress responsive genes has been also utilized to confer increased tolerance to draught defecits. [77, 78]. The increased expression of these genes is frequently associated with a decreased plant growth rate and this could narrow down its practical use (**Table 2**) [79]. In this sense, genomic and related molecular tools could accentuate the genes that mitigate the stress effect so that efforts may help maintaining those genes in breeding programs [104]. Marker assisted breeding combined with traditional breeding as an integrated approach is the best approach for the improvement of the drought stress tolerance in plants. [105, 106].
