Comparison of Waterlogging Tolerance of Three Peach Rootstock Seedlings Based on Physiological, Anatomical and Ultra-Structural Changes
文献类型： 外文期刊
作者： Xu, Fangjie 1 ; Cai, Huaqing 2 ; Zhang, Xianan 1 ; Su, Mingshen 1 ; Zhou, Huijuan 1 ; Li, Xiongwei 1 ; Zhang, Minghao 1 ; Hu, Yang 1 ; Gu, Chao 2 ; Du, Jihong 1 ; Ye, Zhengwen 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Forestry & Pomol Res Inst, Shanghai Key Lab Protected Hort Technol, 1000 Jinqi Rd, Shanghai 201403, Peoples R China
2.Nanjing Agr Univ, Centre Pear Engn Technol Res, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Peoples R China
关键词： waterlogging; peach rootstocks; photosynthetic responses; antioxidative and osmotic regulation; anatomical adaptation; mycorrhizal fungus infection rates
期刊名称：HORTICULTURAE （ 影响因子：2.923； 五年影响因子：3.582 ）
ISSN：
年卷期： 2022 年 8 卷 8 期
页码：
收录情况： SCI
摘要： Peach (Prunus persica (L.) Batsch) is a typical shallow-rooted fruit plant with a high respiratory intensity and oxygen demand, which makes it highly susceptible to oxygen-deficient soil conditions resulting from waterlogging. Rootstock waterlogging resistance is essential to the performance of cultivated peaches under waterlogging stress. In comparison to Prunus persica var. persica ('Maotao', M) and Prunus davidiana (Carr.) C. de Vos ('Shantao', S), Prunus persica f. Hossu ('Hossu', H) exhibited superior leaf photosynthetic electron transfer efficiency, a higher rate of mycorrhizal fungi infection in both fine roots and mesophyll palisade cells, as well as earlier air cavity formation in both leaf midvein and fine roots under waterlogging stress. Furthermore, under non-waterlogging conditions, Hossu had greater leaf superoxide dismutase (SOD) activity, higher proline content, and a greater content of starch granules in the pith and xylem ray cells of stems and roots than rootstocks M and S. As a result, Hossu's tolerance to waterlogging may be due to its higher photosynthetic efficiency, improved tissue oxygen permeability, higher energy metabolism, and increased intracellular mycorrhizal fungus infection rates in both root parenchyma cells and mesophyll palisade cells.
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