NaCl markedly improved the reproductive capacity of the euhalophyte Suaeda salsa
NaCl markedly improved the reproductive capacity of the euhalophyte Suaeda salsa
复制标题
氯化钠显着提高真盐生植物碱蓬的繁殖能力
DOI：
10.1071/fp17181
复制
发表时间：
2018-01-01
影响因子：
3
通讯作者：
Wang, Baoshan
中科院分区：
文献类型：
--
作者：
Guo, Jianrong;Li, Yandi;Wang, Baoshan
在受控条件下研究了 NaCl 对真盐生碱蓬生殖发育的影响。结果表明，NaCl能促进S. salsa的繁殖生长，且200 mM NaCl最为适宜。这反映在提供 NaCl 后，种子产量、种子数、单株花数和叶腋数、千粒重以及花败育率降低。氯化钠通过增加柱头可受性而不是花粉活力来降低花败育率。花瓣、茎和叶中Na+和Cl-浓度显着升高，雄蕊和雌蕊中Na+和Cl-浓度略有升高。相比之下，叶、茎和花瓣中K+浓度显着下降，而雄蕊和雌蕊中K+浓度略有下降。暴露于 NaCl 的母株种子中 Na+ 和 Cl- 浓度也显着增加，而 K+ 浓度则下降。然而，种子质量并未受到影响。我们的结果表明，高浓度的 NaCl 主要通过增加花朵数量和育性来显着增加 S. salsa 的种子数量和质量，并且 S. salsa 制定了维持生殖器官中离子稳态的策略。这些因素对于在盐分环境中建立植物种群起着关键作用。
The effect of NaCl on reproductive development was investigated in euhalophyte Suaeda salsa L. under controlled conditions. Results showed that NaCl promoted the reproductive growth of S. salsa and 200 mM NaCl was optimal. This was reflected in the increases of seed yield, seed number, flower number per plant and leaf axil, 1000 seed weight, as well as a decrease in flower abortion percentage with supply of NaCl. NaCl reduced the flower abortion percentage by increasing stigma receptivity instead of pollen viability. The Na+ and Cl- concentration in petals, stems and leaves were increased significantly but slightly in stamen and pistil. In contrast, the K+ concentration decreased markedly in leaves, stems and petals but a little in stamen and pistil. The Na+ and Cl- concentrations also increased significantly in seed from mother plants exposed to NaCl, whereas K+ decreased. However, seed quality was not influenced. Our results showed that high concentration of NaCl markedly increases the seed number and quality of S. salsa primarily via increasing flower number and fertility and S. salsa develops strategy to maintain ion homeostasis in reproductive organs for the generation. These factors play a pivotal role in setting up plant populations in saline environment.