在多种微藻生物刺激剂应用后,野生火箭 (Diplotaxis tenuifolia L.) 的增长和光合作用效率提高
Lorenzo Mollo1, Alice Petrini2, Alessandra Norici3
1Laboratory of Algal and Plant Physiology, Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Ancona 60131, Italy.
概括
在野生火箭植物中应用的微藻提取物提高了生物质和光合作用效率. 一个微藻联盟增强了叶绿素和同化,显示了可持续作物改进的潜力.
科学领域:
- 农业科学 农业科学
- 植物生理学 植物生理学
- 生物技术是生物技术.
背景情况:
- 叶片喷提供高效的生物刺激剂输送,最大限度地减少对环境的影响.
- 基于微藻的生物刺激剂是环保的,富含生物活性化合物,并且生长迅速.
- 野生火箭 (Diplotaxis tenuifolia L.) 是一种叶子蔬菜,有可能提高产量.
研究的目的:
- 评估三种微藻 (Auxenochlorella protothecoides,Tetradesmus obliquus,Chlamydomonas reinhardtii) 的原始提取物及其联盟作为叶子生物刺激剂的有效性.
- 为了研究野生火箭对微藻提取物的连续叶子应用的生理和生化反应.
- 评估微藻生物刺激剂在提高作物性能和质量特征方面的潜力.
主要方法:
- 从A. protothecoides,T. obliquus,C. reinhardtii及其联盟中制备了原始提取物.
- 野生火箭植物在早期的植物阶段接受了三个连续的叶子处理.
- 生理参数 (生物质,光合作用效率Fv/Fm,PI) 和生化标志物 (叶绿素,胡卜素,,酸盐,δ15N) 在治疗后的24,48,72小时被分析.
主要成果:
- 叶子生物刺激增加了新鲜生物质高达32%,显著提高了光合作用效率.
- 经过联盟处理的植物表现出特别提高的光合作用效率.
- 观察到抗氧化化合物 (胡卜素,) 的晚期,短暂的增加.
- 联盟治疗导致了较高的叶绿素含量,酸盐积累和增强的同化 (较低的δ15N).
- 即使没有非生物性压力,也注意到了积极的影响,这表明了内在的生物刺激性质.
结论:
- 微藻提取物的早期,多步骤的叶子应用是改善作物表现的有希望的可持续策略.
- 微藻联盟展示了独特的好处,可能是由于物种间相互作用,提高使用效率和质量特征.
- 微藻生物刺激剂提供了一种环保的方法来提高叶菜的生产力,并可能改善收获后的质量.
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