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在现场描述整个植物对VPD的口腔反应,使用叶子光学树测量

Ibrahim Bourbia¹, Christopher Lucani¹, Madeline R Carins-Murphy¹

¹School of Natural Sciences, University of Tasmania, Hobart, Tasmania, Australia.

Plant, cell & environment

|July 25, 2023

概括

我们开发了一种新的光学方法,用于测量Tanacetum cinerariifolium中整个植物对蒸汽压力缺陷 (VPD) 的口腔导电性 (g_c) 反应. 这种技术准确地描述了植物用水效率和在现场的口腔行为.

科学领域:

植物生理学植物生理学
生态生态学生态生态学
环境科学环境科学

背景情况:

蒸汽压力缺陷 (VPD) 通过影响口腔调节,显著影响植物的透气和碳吸收.
准确地描述整个植物对VPD的口腔反应对于理解植物水关系至关重要,但在方法上具有挑战性.
(Tanacetum cinerariifolium) 作为一种模范草本植物,用于研究口腔动物的行为.

研究的目的:

开发和验证一种新的现场方法,用于评估整个植物对VPD的口腔导电性 (g_c) 反应.
使用光学树枝测量来研究VPD和土壤干水电位梯度 (ΔΨ) 之间的关系.
为了比较温室和田间条件下的口腔反应.

主要方法:

利用光学树枝测量来监测土壤干水电位梯度 (ΔΨ),以应对日间变化的VPD.
在温室实验中重力测量评估整个植物的口腔导电性 (g_c).
在自然的VPD波动下在生长季节内监测野外植物,在无限制的光和水的情况下.

主要成果:

鉴定了对VPD的两相口腔反应,其值超出后,导电性下降.
温室工厂显示VPD值为1.53kPa,与重力测量测量结果一致.
田野植物表现出更高的灵敏度,VPD值为0.74kPa,表明环境适应的显著差异.

结论:

光学树膜测量提供了一个可行的现场工具,用于表征整个植物口腔导电性 (g_c) 对Tanacetum cinerariifolium中VPD的反应.
该研究揭示了在温室和野外条件下对口腔调节的明显VPD值.
这种新的方法为监测植物对环境压力的生理反应提供了进步.

关键词:

气体交易所的气体交易所植物用水潜力植物用水潜力植物用水使用水.牙关闭器的关闭方式声管导电性声管导电性声管导电性蒸汽压力缺陷的蒸汽压力缺陷

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