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Academic Journal of Agriculture & Life Sciences, 2021, 2(1); doi: 10.25236/AJALS.2021.020101.

Osmotic regulation mediates embolism vessel refilling via bark water uptake in Salix Matsudana

Author(s)

Ji Xia1, Sun Zhongkui2, Cheng Tiantian1, Yan Yu1, Yu Yongchang3

Corresponding Author:
Ji Xia
Affiliation(s)

1Taishan Forestry Science Institute, Tai’an 271000, Shandong, China

2Tai’an Shidai Technology Development Company Limited, Tai’an 271000, Shandong, China

3Taishan University, Tai’an 271000, Shandong, China

Abstract

The aim of this study was to understand the role of bark water uptake in xylem embolism vessel refilling in Salix matsudana. Isolated branch segments of Salix matsudana were soaked in deionized water. Next, the percent loss of conductivity (PLC), the volume, the osmotic potential (Ψs), the concentrations of soluble sugar and ions in xylem sap and the concentration of NSC in the xylem were measured after 2, 4 and 6 h. The PLC decreased, and the volume of xylem sap increased, compared with initial values after soaking for 2, 4, and 6 h. Moreover, the osmotic potential (Ψs) of xylem sap decreased. The concentrations of ions and soluble sugar in the xylem sap increased significantly compared with the initial concentrations after soaking. Based on our findings, water not only entered the xylem vessels through the bark but also repaired the embolism of branches in a certain time. These findings will contribute to the understanding of the physiological and molecular mechanisms between bark water uptake and embolism repair.

Keywords

Bark water uptake; Embolism repair; Osmotic regulation

Cite This Paper

Ji Xia, Sun Zhongkui, Cheng Tiantian, Yan Yu, Yu Yongchang. Osmotic regulation mediates embolism vessel refilling via bark water uptake in Salix Matsudana. Academic Journal of Agriculture & Life Sciences (2021) Vol. 2 Issue 1: 1-7. https://doi.org/10.25236/AJALS.2021.020101.

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