The Physiological Response of Apricot Flowers to Low-Temperature Stress
Plants, ISSN: 2223-7747, Vol: 13, Issue: 7
2024
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Most Recent News
Researcher at Shanxi Agricultural University Details Research in Plant Research (The Physiological Response of Apricot Flowers to Low-Temperature Stress)
2024 APR 17 (NewsRx) -- By a News Reporter-Staff News Editor at NewsRx Life Science Daily -- New study results on plant research have been
Article Description
The growth and development of apricot flower organs are severely impacted by spring frosts. To better understand this process, apricot flowers were exposed to temperatures ranging from 0 °C to −8 °C, including a control at 18 °C, in artificial incubators to mimic diverse low-temperature environments. We aimed to examine their physiological reactions to cold stress, with an emphasis on changes in phenotype, membrane stability, osmotic substance levels, and antioxidant enzyme performance. Results reveal that cold stress induces significant browning and cellular damage, with a sharp increase in browning rate and membrane permeability below −5 °C. Soluble sugars and proteins initially rise as osmoprotectants, but their content decreases at lower temperatures. Proline content consistently increases, suggesting a protective role. Antioxidant enzyme activities, including catalase (CAT), peroxidase (POD), superoxide dismutase (SOD), and ascorbate peroxidase (APX), exhibit a complex pattern, with initial increases followed by declines at more severe cold conditions. Correlation and principal component analyses highlight the interplay between these responses, indicating a multifaceted adaptation strategy. The findings contribute to the understanding of apricot cold tolerance and inform breeding efforts for improved crop resilience.
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