Abstract:
:Brassinosteroids (BRs) are steroid hormones regulating various aspects of plant metabolism, including growth, development and stress responses. However, little is known about the mechanism of their impact on antioxidant systems and phospholipid turnover. Using tobacco plants overexpressing H+/Ca2+vacuolar Arabidopsis antiporter CAX1, we showed the role of Ca2+ ion balance in the reactive oxygen species production and rapid phosphatidic acid accumulation induced by exogenous BR. Combination of our experimental results with public transcriptomic and proteomic data revealed a particular role of Ca2+-dependent phospholipid metabolizing enzymes in BR signaling. Here we provide novel insights into the role of calcium balance and lipid-derived second messengers in plant responses to exogenous BRs and propose a complex model integrating BR-mediated metabolic changes with phospholipid turnover.
journal_name
Steroidsjournal_title
Steroidsauthors
Kretynin SV,Kolesnikov YS,Derevyanchuk MV,Kalachova TA,Blume YB,Khripach VA,Kravets VSdoi
10.1016/j.steroids.2019.108444subject
Has Abstractpub_date
2019-07-08 00:00:00pages
108444eissn
0039-128Xissn
1878-5867pii
S0039-128X(19)30134-5pub_type
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