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- Title
Plasmodesmata play a critical role in promoting the germination of floral buds in Ilex verticillata.
- Authors
Yang, Ying; Xie, Xiaoting; Tao, Shenchen; Zhou, Kaiyue; Yu, Youxiang; Lu, Zhe; Jiang, Dean; Zheng, Bingsong; He, Yi
- Abstract
In the plant, plasmodesmata (PDs) permit direct cytoplasmic connections and facilitate the local molecular exchange of neighboring cells. Cell-to-cell communications through PD play critical roles in the small RNAs mobile, transport of metabolites, cell fate specification and development. The trafficking of PD is under tight control and it is also constantly fine-tuned to fit in the requirements of cell-to-cell communication. However, how PD involved in the transition from the dormant to the germination of buds is not yet clearly known. Here, we provide experimental evidence that PD formation and permeability are correlated to the germination of buds in North-American holly. Moreover, the increased PD number and permeability in the germinating buds are associated with the down-regulated SA signaling, which also facilitates starch degradation. Altogether, our study stresses the fundamental role of PD in governing the transition from dormant to germination of floral buds, unveiling the regulation of PD during the flowering of North-American holly. Understanding the mechanism of SA-mediated PD regulation during the flowering will provide an effective way to enhance the improvement of agronomical tree traits by the application of PD engineering.
- Publication
Plant Growth Regulation, 2020, Vol 91, Issue 3, p349
- ISSN
0167-6903
- Publication type
Article
- DOI
10.1007/s10725-020-00609-0