Rice WUSCHEL-related homeobox 3A (OsWOX3A) modulates auxin-transport gene expression in lateral root and root hair development

WUSCHEL-related homeobox geneWOX11increases rice drought resistance by controlling root hair formation and root system development

“…7 Although WOX11 expression can be induced by auxin, 12 the expression level of OsWOX3A does not change in WOX11 transgenic plants. These results suggest that mechanism of root hair development regulated by WOX11 might be different from that of OsWOX3A.…”

“…When plants are exposed to drought stress, root hairs form an important and large surface area for efficient absorption of water and minerals. Although the mechanisms of root hair development have been extensively studied in Arabidopsis 5 and the molecular information on root hair formation in monocot species is studied by the identification of some genes in maize, 6 rice, 7,8 and barley, 9-11 no information is available in regard of the relevance of root hair growth and response to drought stress.…”

Cold tolerance in rice plants is partially controlled by root responses

“…Susuki et al (2003) reported the first root-hairless mutant in rice, rh2 , whose absence of root hairs is likely caused by a shortage of endogenous auxin. Also, WUSCHEL-related homeobox 3A (OsWOX3A) was reported to control root hair formation through the regulation of auxin transport genes (Yoo et al 2013), further suggesting that auxin is required for root hair development. We also detected higher expression of phospholipase D , phytosulfokine receptor , and wali7 in CT than CS plants.…”

Regulatory role of the OsWOX3A transcription factor in rice root development

“…5 In our previous studies of nal2 nal3 (oswox3a) mutants, we showed that OsWOX3A is involved in lateral root development by altering the expression of auxin transport genes. 4,6 Thus, we further examined the root phenotype of OsWOX3A-OX plants. The lateral roots per adventitious roots slightly increased in OsWOX3A-OX plants, compared with wild type (Fig.…”

“…Lateral root formation and growth are mainly controlled by auxin 6,7 and a potential role of GA in lateral root development remains poorly understood. 8 Several reports suggested that GAs negatively regulate the initiation of lateral root formation.…”