Kaiser Sabrina, Scheuring David
Plant Pathology, University of Kaiserslautern, Kaiserslautern, Germany.
Front Plant Sci. 2020 May 8;11:553. doi: 10.3389/fpls.2020.00553. eCollection 2020.
Cell division and cell elongation are fundamental processes for growth. In contrast to animal cells, plant cells are surrounded by rigid walls and therefore loosening of the wall is required during elongation. On the other hand, vacuole size has been shown to correlate with cell size and inhibition of vacuolar expansion limits cell growth. However, the specific role of the vacuole during cell elongation is still not fully resolved. Especially the question whether the vacuole is the leading unit during cellular growth or just passively expands upon water uptake remains to be answered. Here, we review recent findings about the contribution of the vacuole to cell elongation. In addition, we also discuss the connection between cell wall status and vacuolar morphology. In particular, we focus on the question whether vacuolar size is dictated by cell size or and share our personnel view about the sequential steps during cell elongation.
细胞分裂和细胞伸长是生长的基本过程。与动物细胞不同，植物细胞被坚硬的细胞壁所包围，因此在伸长过程中需要细胞壁松弛。另一方面，液泡大小已被证明与细胞大小相关，抑制液泡扩张会限制细胞生长。然而，液泡在细胞伸长过程中的具体作用仍未完全明确。特别是液泡在细胞生长过程中是主导单位还是仅仅在吸水时被动扩张的问题仍有待解答。在此，我们综述了关于液泡对细胞伸长作用的最新研究发现。此外，我们还讨论了细胞壁状态与液泡形态之间的联系。特别是，我们关注液泡大小是由细胞大小决定还是 这一问题，并分享我们对细胞伸长过程中连续步骤的个人观点。
