Autophagy is a degradation mechanism involved in quality and quantity control of cytoplasmic proteins and organelles,regarded as a programmed cell death juxtaposed with apoptosis and necrosis.Unravelled correlations between autophagy,apoptosis and necrosis,however,suggest that autophagy may be a manager of programme cell death,and determine whether cell death occurs and selection of death pathways in response to stress.Revealing molecular mechanism of autophagy contributes to understand these seemingly contradictory views.Elucidation of autophagy′s role in programmed cell death has important practical significance for treating tumor.
Brassinosteroids( BRs),an important steroidal hormone,are involved in multiple development progresses in plants. Combining the genetics,genomics,proteomics and cell biology,important achievements on BRs regulation mechanism have been made in plants. This paper summarized the current research progresses of BRs on plant cell division,cell elongation,reproductive development,photomorphosis,stress response and tropism development, which were expected to provide reference for researchers.
