Interaction between Glucose and Brassinosteroid during the Regulation of Lateral Root Development in Arabidopsis

Sugar-induced plant growth is dependent on brassinosteroids

“…These results suggest that BRs may function downstream of HXK1 in mediating Glc promotion of hypocotyl elongation. Similar to our findings, Gupta et al (2015) recently reported that BR signaling functions downstream of Glc to control lateral root production and emergence in Arabidopsis. 20 The same laboratory also reported that under etiolated conditions, Glc and BR signals may converge at auxin signaling machinery to regulate etiolated hypocotyl elongation.…”

“…Similar to our findings, Gupta et al (2015) recently reported that BR signaling functions downstream of Glc to control lateral root production and emergence in Arabidopsis. 20 The same laboratory also reported that under etiolated conditions, Glc and BR signals may converge at auxin signaling machinery to regulate etiolated hypocotyl elongation. 11 All these results suggest that the crosstalk between sugars and BRs are important for regulation of different growth and developmental processes in plants.…”

Multiple Interactions between Glucose and Brassinosteroid Signal Transduction Pathways in Arabidopsis Are Uncovered by Whole-Genome Transcriptional Profiling

“…To study the integration of BR and Glc signals at the genetic level, we used gin2-1bri1-6 double mutant (Gupta et al, 2015). As the ecotype background for gin2-1 mutant is Landsberg erecta (Ler) and for bri1-6 mutant is Enkheim (En2), wild-type segregants were screened and used as control for gin2-1bri1-6 double mutant.…”

“…The axr2-1 (AT3G23050, CS3077) seed stock was obtained from the European Arabidopsis Stock Centre. The following lines were obtained from published sources: rgs1-1 and rgs1-2 (AT3G26090; Chen et al, 2003); gpa1-1, gpa1-2, and gpa1-3 (AT2G26300; Ullah et al, 2001); thf1-1 (AT2G20890; Huang et al, 2006); cpd (AT5G05690; Szekeres et al, 1996); ces-D (Poppenberger et al, 2011); pTCH4: TCH4::GUS (Xu et al, 1995); DR5::GUS (Ulmasov et al, 1997);pin-formed3-4 (pin3-4;AT1G70940;Friml et al, 2002); pin7-2 (AT1G23080; Friml et al, 2003); multidrug resistant1-1 (mdr1-1; AT3G28860; Noh et al, 2001); P-glycoprotein1-100 (AT2G36910; Lin and Wang, 2005); tir1/afb1-3/afb2-3/afb3-4 (AT3G62980/ AT4G03190/AT3G26810/AT1G12820; Dharmasiri et al, 2005); and gin2-1bri1-6 (AT4G29130/AT4G39400; Gupta et al, 2015). All mutant lines were in Col-0 background, except the following: the gin2-1 mutant was in the Ler background; bri1-6 and bes1-D mutants were in the En2 background; the bak1-1, gpa1-1, gpa1-2, mdr1-1, mdr1-101, and tir1/afb1-3/afb2-3/afb3-4 mutants were derived from the Wassilewskija background.…”

Ethylene acts as a negative regulator of glucose induced lateral root emergence in Arabidopsis

“…3,8 Glc can also affect various aspects of root growth and development. 1,[13][14][15] Glc mainly employs auxin response machinery to modulate early seedling growth and development in Arabidopsis. 13 Recently, we have shown that Glc can induce LR emergence via HXK1 mediated signaling and BRI1 mediated BR signaling works further downstream to HXK1 to regulate LR emergence.…”