电刺激促进玉米种子的萌发、幼苗生长和耐热性提高。
Electrical stimulation boosts seed germination, seedling growth, and thermotolerance improvement in maize ( L.).
机构信息
School of Life Sciences, Yunnan Normal University, Kunming, P.R. China.
Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Kunming, P.R. China.
出版信息
Plant Signal Behav. 2019;14(12):1681101. doi: 10.1080/15592324.2019.1681101. Epub 2019 Oct 25.
Electrical signaling, similar to chemical signalings such as calcium (Ca), reactive oxygen species (ROS, mainly hydrogen peroxide: HO), nitric oxide (NO), and hydrogen sulfide (HS), regulates many physiological processes. However, the effect of electrical stimulation on seed germination, seedling growth, and thermotolerance improvement in maize was little known. In this study, using maize as materials, the effect of electrical stimulation on seed germination, seedling growth, and thermotolerance improvement in maize was explored. The results suggested that electrical stimulation with optimal intensity boosted germination rate and seedling growth (as indicated in the increase in the length of shoots and roots, as well as fresh weight) under normal germination conditions. In addition, electrical stimulation augmented the survival rate of maize seedlings, mitigated the decrease in the tissue vitality, and reduced the peroxidation of membrane lipids under heat stress. These data suggested that electrical stimulation could boost seed germination, seedling growth, and thermotolerance improvement in maize.
电信号类似于化学信号，如钙（Ca）、活性氧（ROS，主要是过氧化氢：HO）、一氧化氮（NO）和硫化氢（HS），调节许多生理过程。然而，电刺激对玉米种子萌发、幼苗生长和耐热性提高的影响知之甚少。在这项研究中，以玉米为材料，探讨了电刺激对玉米种子萌发、幼苗生长和耐热性提高的影响。结果表明，在正常萌发条件下，最佳强度的电刺激可提高萌发率和幼苗生长（表现为茎和根的长度以及鲜重增加）。此外，电刺激可提高玉米幼苗的成活率，减轻热胁迫下组织活力的下降，减少膜脂的过氧化。这些数据表明，电刺激可以促进玉米种子的萌发、幼苗的生长和耐热性的提高。
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