反季节温度周期对休眠植物的潜在威胁越来越大

IF 8.3 1区 生物学 Q1 PLANT SCIENCES
New Phytologist Pub Date : 2024-08-17 DOI:10.1111/nph.20052
Al P. Kovaleski
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引用次数: 0

摘要

摘要木本植物在冬季条件下的生存主要取决于两种功能反应:耐寒性和休眠。休眠会根据寒意的积累影响萌芽时间。气候变暖对休眠的影响可能会出现时间上的偏移:秋冬季的气候变暖会减少寒意的积累,从而推迟春季的萌芽时间。同样的气候变暖事件也会影响耐寒性动态,从而产生直接影响。随着休眠期的延长,抗寒率也会提高,因此,同样的升温幅度在季节越晚发生,损害风险就越大,这取决于低温的恢复情况。如果不稳定天气的频率随着气候变化而增加,预计风险也会增加。然而,要了解植物在现在和未来气候条件下如何度过季节,仍然需要更好地了解冬季生理机能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

The potential for an increasing threat of unseasonal temperature cycles to dormant plants

The potential for an increasing threat of unseasonal temperature cycles to dormant plants

Two functional responses largely guide woody plants' survival to winter conditions: cold hardiness and dormancy. Dormancy affects budbreak timing based on chill accumulation. Effects of warming on dormancy may appear time-shifted: fall and winter warming events decrease chill accumulation, delaying budbreak observed in spring. The same warming events also affect cold hardiness dynamics, having immediate implications. As cold deacclimation rates increase with dormancy progression, the same amount of warming has greater damage risk the later it occurs in the season, depending on return of low temperatures. Should frequency of erratic weather increase with climate change, more instances of risk are expected. However, understanding how plants fare through seasons now and in future climates still requires better knowledge of winter physiology.

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来源期刊
New Phytologist
New Phytologist 生物-植物科学
自引率
5.30%
发文量
728
期刊介绍: New Phytologist is an international electronic journal published 24 times a year. It is owned by the New Phytologist Foundation, a non-profit-making charitable organization dedicated to promoting plant science. The journal publishes excellent, novel, rigorous, and timely research and scholarship in plant science and its applications. The articles cover topics in five sections: Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology. These sections encompass intracellular processes, global environmental change, and encourage cross-disciplinary approaches. The journal recognizes the use of techniques from molecular and cell biology, functional genomics, modeling, and system-based approaches in plant science. Abstracting and Indexing Information for New Phytologist includes Academic Search, AgBiotech News & Information, Agroforestry Abstracts, Biochemistry & Biophysics Citation Index, Botanical Pesticides, CAB Abstracts®, Environment Index, Global Health, and Plant Breeding Abstracts, and others.
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