“…In plants there have been 11 ALDH families identified to date: ALDH2, ALDH3, ALDH5, ALDH6, ALDH7, ALDH10, ALDH11, ALDH12, ALDH18, ALDH19, and ALDH21. The families ALDH11, ALDH19 and ALDH21 are unique to plants and, more recently, ALDH sequences encoding members of a novel family, ALDH22, have been identified in Arabidopsis, maize, and rice genomes (Kirch et al 2004).…”