Development and chemical characterization of Casparian strips in the roots of Chinese fir (Cunninghamia lanceolata)

• DOI: 10.1007/s00468-019-01820-x
• Publication Date: 2019-02-15T12:47:21Z
• Authors: Chengwei Song; Weiwei Shen; Liang Du; Jialong Wen; Jinxing Lin; Ruili Li
• Keywords: Endodermis; Suberin

Lignification and suberization of Casparian strips occurred simultaneously during the development Cunninghamia lanceolata primary roots. The in cell walls vascular plant root endodermis exodermis cells are vital for exclusion salts pathogens, selective nutrient uptake, other processes related to transport assimilates water. Despite importance strips, their chemical composition its relevance diffusion barrier functions remain a matter debate, especially woody plants. Here, we describe cytological features revealed by fluorescent staining developing Chinese fir (Cunninghamia lanceolata), one most important timber species native China. Using apoplastic permeability tests, that provide function from secondary stage development, after lignin suberin deposited onto surface protoplast next tangential walls. Furthermore, enzymatically isolated analyzed using Fourier transform infrared spectroscopy, revealing they consist largely suberin. confocal Raman microscopy label-free, situ, structural biochemical analysis, showed accumulated strips. Taken together, these results elucidated strip characterized lignification situ roots fir. Since this shows broad adaptability varying environmental conditions, our findings may facilitate work understand relationship stresses.