J Integr Plant Biol. ›› 2018, Vol. 60 ›› Issue (4): 266-269.DOI: 10.1111/jipb.12616
• Letters to the Editor •
Fei Xie†, Hailong Yan†, Yang Sun, Yameng Wang, Hong Chen, Wanying Mao, Liyao Zhang, Mengxiang Sun and Xiongbo Peng*
During embryogenesis, plants are thought to use a mechanism that allows the suspensor to maintain its identity. Here, we reported that RPL18aB is involved in this mechanism in Arabidopsis thaliana. The suspensor cells proliferated in rpl18aB and formed a multicellular structure rather than undergo programmed cell death, as in wild type. Suspensors of rpl18aB expressed the embryo proper marker, DRN::GFP, but not the suspensor marker, WOX8::GFP. In addition, auxin accumulated throughout the suspensors of rpl18aB proembryos. Suspensor‐specific expression of RPL18aB could rescue the cell proliferation defects in rpl18aB suspensors. These findings supported a role for RPL18aB in maintaining suspensor identity.
Fei Xie, Hailong Yan, Yang Sun, Yameng Wang, Hong Chen, Wanying Mao, Liyao Zhang, Mengxiang Sun and Xiongbo Peng. RPL18aB helps maintain suspensor identity during early embryogenesis[J]. J Integr Plant Biol., 2018, 60(4): 266-269.
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