Methyl jasmonate inhibits lamina joint inclination by repressing brassinosteroid biosynthesis and signaling in rice

Jasmonic acid‐mediated defense suppresses brassinosteroid‐mediated susceptibility to Rice black streaked dwarf virus infection in rice

“…These results indicate that JA‐mediated plant defense can suppress the BR‐mediated susceptibility to RBSDV infection. This follows the pattern seen with recent studies that have indicated an antagonistic relationship between JA and BR during plant growth and development (Ren et al ., ; Gan et al ., ). In Arabidopsis, BR was found to negatively regulate both JA signaling and JA‐inhibitory root growth.…”

“…Lamina joint inclination or leaf angle is mainly regulated by BR. MeJA application impaired the increase of BR-induced lamina joint inclination, and this inhibition depended on the BR signaling components OsBRI1 and OsGSK2 (Gan et al, 2015). The interaction between JA and BR is also involved in the defense response against pathogens.…”

Barley Brassinosteroid Mutants Provide an Insight into Phytohormonal Homeostasis in Plant Reaction to Drought Stress

“…Accordingly, it was previously reported in Arabidopsis and rice that BRs increase the JA content under normal condition (Müssig et al, 2000; Kitanaga et al, 2006). It seems that the BR-JA interplay may be quite complicated, as it was reported that exogenous methylJA application significantly repressed expression of BR biosynthesis genes, and consequently decreased the endogenous BR content (Gan et al, 2015). These results broaden the general view of this inter-hormonal interaction, as it has been previously reported that BRs negatively regulate JA signaling (Kim et al, 2013; Chung et al, 2014).…”

“…These results broaden the general view of this inter-hormonal interaction, as it has been previously reported that BRs negatively regulate JA signaling (Kim et al, 2013; Chung et al, 2014). Interestingly, the exogenous methylJA was found to repress the expression of the BR signaling and target genes (Gan et al, 2015). As expected (Huang et al, 2008; Llanes et al, 2016), drought stress induced the significant increase in the endogenous JA content in all analyzed genotypes.…”

“…It is known that many of the physiological functions regulated by BRs are in fact modulated based on a complicated network of interactions with other hormones: auxin (Hardtke et al, 2007; Jung et al, 2010), gibberellin (Shimada et al, 2006; Bai et al, 2012; Gallego-Bartolomé et al, 2012; Unterholzner et al, 2015), ABA (Steber and McCourt, 2001; Zhang et al, 2009), ethylene (Yi et al, 1999), and jasmonic acid (Ren et al, 2009; Gan et al, 2015). This interaction is based on some crosstalk between BR biosynthesis and signal transduction pathways and signalosomes of other phytohormones (Gruszka, 2013; Saini et al, 2015).…”