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A recent study by Ohio State University researchers revealed a complex relationship between plant growth regulators and the resistance of creeping bentgrass to various environmental stresses, such as heat and salt stress.
Creeping bentgrass (Agrostis stolonifera L.) is a widely used and economically valuable turfgrass species widely used on golf courses throughout the United States. In the field, plants are often exposed to multiple stresses simultaneously, and independent study of the stresses may not be sufficient. Stresses such as heat stress and salt stress can affect phytohormone levels, which in turn can affect the plant’s ability to tolerate stress.
The scientists conducted a series of experiments to determine whether levels of heat stress and salt stress could negatively impact the health of creeping bentgrass, and to evaluate whether the use of plant growth regulators could improve plant health under stress. They found that certain plant growth regulators can improve the stress tolerance of creeping bentgrass, especially under heat and salt stress. These results provide opportunities for developing new strategies to mitigate the adverse effects of environmental stressors on turf health.
The use of specific plant growth regulators makes it possible to optimize the growth and development of creeping bentgrass even in the presence of stressors. This discovery holds great promise for improving turf quality and sustainability under different environmental conditions.
This study highlights the interdependent interactions between plant growth regulators and environmental stressors, highlighting the complexity of turfgrass physiology and the potential of tailored management approaches. This research also provides practical insights that can directly benefit turfgrass managers, agronomists, and environmental stakeholders.
According to co-author Arlie Drake, assistant professor of agriculture at Clark State University, “Of all the things we put on lawns, I’ve always thought growth regulators are good, especially HA synthesis inhibitors. Mainly because they also have roles, not just regulating vertical growth.”
The final author, David Gardner, is a professor of turf science at Ohio State University. It works primarily on weed control in lawns and ornamentals, as well as stress physiology such as shade or heat stress.
Further information: Arlie Marie Drake et al., Effects of plant growth regulators on creeping bentgrass under heat, salt and combined stress, HortScience (2023). DOI: 10.21273/HORTSCI16978-22.
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Post time: May-20-2024