摘要
Auxin is a classical phytohormone that is involved in various developmental processes.A striking example of auxin action is the promotion of shoot organogenesis.In the shoot apex,the shoot apical meristem(SAM)maintains a mass of stem cells in the central region,termed the central zone(CZ).Stem cells in the CZ divide slowly to replenish themselves and to provide cells to the surrounding peripheral zone(PZ),where cells divide rapidly to form lateral organs.The CZ also provides cells to the underneath rib meristem(RM)。
Auxin is a classical phytohormone that is involved in various developmental processes.A striking example of auxin action is the promotion of shoot organogenesis.In the shoot apex,the shoot apical meristem（SAM）maintains a mass of stem cells in the central region,termed the central zone（CZ）.Stem cells in the CZ divide slowly to replenish themselves and to provide cells to the surrounding peripheral zone（PZ）,where cells divide rapidly to form lateral organs.The CZ also provides cells to the underneath rib meristem（RM）.
