甲基斯酸的叶子应用会影响impatiens walleriana的生长和干旱压力下的叶子生理学
Marija Đurić1, Angelina Subotić1, Ljiljana Prokić2
1Department for Plant Physiology, Institute for Biological Research "Siniša Stanković", National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia.
Plant signaling & behavior
|June 8, 2023
概括
甲基斯酸盐 (MeJA) 的应用改善了干旱压力Impatiens walleriana的生长和生理参数. 50微米的MeJA处理增强了叶绿素和平衡指数,表明干旱耐受性增加.
科学领域:
- 植物生理学 植物生理学
- 园艺园艺 园艺园艺
- 压力生物学 压力生物学
背景情况:
- Impatiens walleriana是一种受欢迎的园艺植物,对干旱非常敏感.
- 干旱压力会对植物生长和生理功能产生负面影响.
- 甲基斯酸盐 (MeJA) 是一种可以调节植物对压力的反应的诱导剂.
研究的目的:
- 评估叶子应用的MeJA对干旱压力的Impatiens walleriana的影响.
- 评估MeJA对生长和关键生理参数的影响,作为干旱耐受性的指标.
主要方法:
- 干旱压力是由保留灌引发的,实现了土壤水含量15%和5%的压力.
- 在干旱诱导之前和干旱诱导期间,两次向植物喷了5μM或50μM的MeJA.
- 评估的参数包括生长指标 (射击重量,叶面积) 和生理指标 (口腔导电性,叶绿素,黄素,素,素,平衡指数).
主要成果:
- 干旱显著减少了芽的重量和叶面积,但并没有减少干物质含量.
- 叶子MeJA应用改善了生长参数,有效性因度和干旱强度而异.
- 在5%的土壤含水量下,50μM MeJA增加了叶绿素指数和平衡指数,表明生理干旱耐受性提高.
结论:
- 在叶子上应用MeJA可以减轻Impatiens walleriana的干旱压力影响.
- MeJA增强了生理干旱耐受性,特别是在更高度和严重干旱条件下.
- 这项研究强调了MeJA作为一种提高园艺植物干旱抵御能力的工具的潜力.
相关概念视频
01:57Adaptations that Reduce Water Loss
25.8K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.8K
02:41Responses to Drought and Flooding
10.8K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.8K
02:04Regulation of Transpiration by Stomata
28.5K
During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.
28.5K
02:02Responses to Salt Stress
13.2K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
13.2K
02:45Responses to Heat and Cold Stress
13.6K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.6K
02:36Meristems and Plant Growth
46.2K
Plants grow throughout their lives; this is called indeterminate growth, and it distinguishes plants from most animals. Although certain parts of plants stop growing (e.g., leaves and flowers), others grow continuously—like roots and stems.
46.2K