Dual Regulation of Ionic Effect on Zostera marina L. Seed Germination and Leaf Differentiation in Low-Salinity Conditions
文献类型： 外文期刊
作者： Li, Peilong 1 ; Gao, Yaping 1 ; Jiang, Zengjie 1 ; Wang, Linjie 1 ; Sun, Xiaoli 4 ; Wang, Jiaqi 4 ; Wang, Jing 5 ; Sui, Haidong 5 ; Wang, Junwei 6 ; Zhang, Yitao 6 ;
作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, State Key Lab Mariculture Biobreeding & Sustainabl, Qingdao 266071, Peoples R China
2.Chinese Acad Agr Sci, Grad Sch, Beijing 100081, Peoples R China
3.Qingdao Marine Sci & Technol Ctr, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao 266237, Peoples R China
4.Qingdao Univ, Coll Life Sci, Qingdao 266071, Peoples R China
5.SEE Fdn, Beijing 100038, Peoples R China
6.Rongcheng Chudao Aquaculture Co Ltd, Rongcheng 264312, Peoples R China
关键词： germination; leaf differentiation; osmotic pressure; biochemical traits; antioxidant enzymes
期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）
ISSN： 2223-7747
年卷期： 2025 年 14 卷 2 期
页码：
收录情况： SCI
摘要： Low-salinity conditions are generally used in land-based cultivation to promote the germination and growth of Zostera marina L. and to improve the restoration effect of seagrass beds. Different salinity conditions lead to morphological and physiological differences. To investigate the impacts of salinity and osmotic pressure on the germination and early development of Zostera marina seeds, this study utilized seawater with different salinity conditions and PEG-6000 solutions to simulate various non-ionic osmotic pressures and examine the germination, cotyledon growth, and leaf differentiation over 28 days, as well as determine the biochemical traits on days 1, 3, 5, and 7. The results show that the cumulative germination rate in LS-0 was 91.6%, but it was not significantly affected by the PEG solutions. The different salinities (5, 10, and 15) had no significant effect on the germination rate, which ranged from 76.4% to 78.8%: low salinity and low osmotic pressure stimulated the germination by accelerating the water uptake through increased osmotic pressure differences. The leaf differentiation was regulated by the osmotic pressure and salinity. In LS-10, the most used condition, the leaf differentiation rate was 35.2%, while PEG-10 displayed 6.4%. The total soluble sugar and soluble protein in the seeds decreased. Antioxidant enzyme activities were activated under low-salinity conditions, which supported germination within a tolerable oxidative stress range.
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