n rice, these physiological
alterations are restrained by the submergence tolerance
regulator SUBMERGENCE1A (SUB1A), an ERF
domain-containing transcription factor. Only limited
rice cultivars possess the SUB1A gene, and more specifically
the SUB1A-1 allele, which is highly induced
during submergence (Fukao et al., 2006; Xu et al.,
2006). Genotypes containing SUB1A-1 (henceforth referred
to as SUB1A) can endure complete submergence
for prolonged periods with considerably less severe
leaf senescence and recommence the development of
new leaves and tillers after desubmergence