Seed germination and vegetative growth are two important plant growing stages that are vulnerable to physical and biological stress. Improvement in crop germination potential and seedling growth rate generally leads to high crop productivity. Cold plasma is a promising technology used to improve seed germination and growth. Structural changes on tomato seed surface exposed with cold air plasma jet for a different time period (1 min, 5 min, 10 min) was examined by SEM. For in-depth study, different physiological parameter such as seed germination and seedling growth, biochemical parameter such as reactive species status, antioxidants and phytohormone, and molecular analysis of various gene expression was also evaluated. Drought stress tolerance potential of cold plasma primed tomato seedling was also examined under 30% PEG stress. Cold plasma seed priming modulates tomato seed coat and improves the germination efficiency. It also induces growth, antioxidants, phytohormone, defense gene expression, and drought stress tolerance potential of tomato seedling. Cold plasma seeds priming augment the reactive species at a molecular level within seedlings, which changes the biochemistry and physiological parameters of plants by inducing different cellular signaling cascades.

种子的发芽和营养生长是两个重要的植物生长阶段，容易受到物理和生物胁迫。作物发芽潜力和幼苗生长速度的提高通常会提高作物的生产力。冷等离子体是用于改善种子发芽和生长的有前途的技术。通过SEM检查了在不同时间段（1分钟，5分钟，10分钟）暴露于冷空气等离子体射流的番茄种子表面的结构变化。为了进行深入研究，还评估了不同的生理参数（例如种子发芽和幼苗生长），生化参数（例如反应物种状态，抗氧化剂和植物激素）以及各种基因表达的分子分析。还研究了在30％PEG胁迫下冷血浆引发的番茄幼苗的干旱胁迫耐性。冷血浆种子引发可调节番茄种皮并提高发芽效率。它还诱导番茄幼苗的生长，抗氧化剂，植物激素，防御基因表达和干旱胁迫耐性。冷血浆种子引发可在幼苗内的分子水平上增强反应性物种，从而通过诱导不同的细胞信号传导级联来改变植物的生物化学和生理参数。