Publications by authors named "Shan-Shan Dun"
Style penetration by pollen tubes is essential for reproductive success, a process requiring canonical Rab5s in Arabidopsis. However, functional loss of Arabidopsis Vps9a, the gene encoding for guanine nucleotide exchange factor (GEF) of Rab5s, did not affect male transmission, implying the presence of a compensation program or redundancy. By combining genetic, cytological, and molecular approaches, we report that Arabidopsis Vps9b is a pollen-preferential gene, redundantly mediating pollen tube penetration of style with Vps9a.
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- Root hairs (RHs) in vascular plants develop in response to internal and external factors like ethylene and light, but the interaction between these signals in RH development is not fully understood.
- Research shows that the protein COP1 plays a crucial role in coordinating ethylene and light signals, mainly by suppressing RH development in dark conditions.
- COP1 promotes the degradation of specific proteins (ACS2 and ACS6) that regulate ethylene levels, suggesting that it has a dual role: inhibiting RH growth while supporting hypocotyl elongation under certain conditions, enhancing overall seedling survival.