Advanced environmentally-controlled experimentation to evaluate plant stressors and growth success

先进的环境控制实验来评估植物应激源和生长成功

• 批准号: RTI-2020-00608
• 负责人: Wood, Lisa
• 金额: $ 10.87万
• 依托单位: University of Northern British Columbia
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=693655
• 关键词: Advanced; environmentally; controlled; experimentation; evaluate

UNBC currently has four growth chambers with components that are obsolete and/or non-functional. The chambers are composed of three different model types, and given these inconsistencies, it is impossible to run a larger-scale experiment without significant variability between growth environments. Therefore, we propose to purchase three new growth chambers to replace the existing units.***We require new growth chambers in order to effectively and accurately conduct environmentally-controlled experimentation. We have a need for increased temperature variation, more comprehensive and energy efficient lighting, and effective, working humidity controls. These chambers would contain technologically-advanced lighting and temperature control, and effective relative humidity control compared to the very old models currently at UNBC. More current, up to date systems now use more technologically-advanced lights, which are much more energy efficient, substantially increase the flexibility of lighting treatment, and produce less heat, thereby eliminating the need for cooling jackets around the lighting fixtures. Furthermore, there are significant upgrades to technology available for temperature regulation within the chambers, allowing experimentation at a greater temperature range. Lastly, growth chambers produced today use more advanced humidification, such as an ultrasonic humidifier. ***The NSERC-funded research that will be supported by the proposed equipment acquisition includes: 1. Investigating how temperature and light variation may influence plant rate of response to glyphosate herbicide-induced stress and also plant nutrition, given that glyphosate is a known chelator (CRD and Discovery - Wood). 2. Experimentation with CO2-injected hydroponic systems to elucidate impacts on plant growth (Engage - Wood). 3. Experimentation with epiphytic lichen, Lobaria pulmonaria, growing in drier' environments with the provision of exogenous sugar (Discovery - Fredeen). 4. The development of a zeolite-based adsorbent to uptake PO43- and NH4 from contaminated water to use as a slow-release fertilizer for plant growth in varying conditions (Engage - Kazemian). ***Additional Research that will be supported through this grant includes investigation of the response of wet temperate canopy lichen to environmental stresses such as temperature change (Coxson), and to assess the growth of medicinal mushrooms on woody debris in different humidities (Massicotte).***These projects address critical needs. It is imperative that we better understand the response of plants in Canada to climate change stress and human pressures in the natural environment. Plants possess species and population-level specificity in stress tolerance and acclimation capabilities. More research is required to understand how plants cope with changes to temperature, humidity, and light conditions to mitigate plant mortality or changes to reproductive capacity and conserve valuable resources.

UNBC 目前有四个生长室，其组件已过时和/或无法使用。这些室由三种不同的模型类型组成，鉴于这些不一致，如果生长环境之间没有显着的变化，就不可能进行更大规模的实验。因此，我们建议购买三个新的生长室来替换现有的设备。***我们需要新的生长室，以便有效、准确地进行环境控制实验。我们需要增加温度变化、更全面和节能的照明以及有效的工作湿度控制。与目前在 UNBC 的非常旧的模型相比，这些房间将包含技术先进的照明和温度控制，以及有效的相对湿度控制。现在，更新的系统使用技术更先进的灯，这些灯更加节能，大大提高了照明处理的灵活性，并产生更少的热量，从而消除了在照明灯具周围安装冷却套的需要。此外，室内温度调节技术也有了重大升级，允许在更大的温度范围内进行实验。最后，当今生产的生长室使用更先进的加湿装置，例如超声波加湿器。 *** NSERC 资助的研究将由拟议的设备采购支持，包括： 1. 鉴于草甘膦是一种已知的螯合剂（CRD 和 Discovery - Wood），研究温度和光照变化如何影响植物对草甘膦除草剂引起的胁迫以及植物营养的反应速率。 2. 使用注入二氧化碳的水培系统进行实验，以阐明对植物生长的影响（Engage - Wood）。 3.在提供外源糖的干燥环境中生长的附生地衣 Lobaria pulmonaria 的实验（Discovery - Fredeen）。 4. 开发基于沸石的吸附剂，从污染水中吸收 PO43- 和 NH4，用作不同条件下植物生长的缓释肥料（Engage - Kazemian）。 ***将通过这笔赠款支持的其他研究包括调查湿温带冠层地衣对温度变化等环境压力的反应（Coxson），以及评估不同湿度下木质碎片上药用蘑菇的生长（Massicotte）。***这些项目满足关键需求。我们必须更好地了解加拿大植物对自然环境中的气候变化压力和人类压力的反应。植物在胁迫耐受性和驯化能力方面具有物种和种群水平的特异性。需要更多的研究来了解植物如何应对温度、湿度和光照条件的变化，以降低植物死亡率或繁殖能力的变化并保护宝贵的资源。