Investigating properties of sweet cherry (Prunus avium) flower buds that help promote freezing avoidance by supercooling

IF 4.2 3区 生物学 Q1 PLANT SCIENCES
Plant Biology Pub Date : 2024-08-21 DOI:10.1111/plb.13697
E. Houghton, Y. Watanabe, D. Neilsen, L. M. Nelson, K. Hannam
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引用次数: 0

Abstract

Abstract Image

研究甜樱桃(Prunus avium)花蕾的特性,这些特性有助于通过过冷促进避免冷冻。
植物组织过冷作为低温生存的一种手段,其中涉及的机制仍未完全明了。我们研究了可能促进越冬甜樱桃(Prunus avium)花蕾过冷的特性。我们利用差热分析(DTA)对甜樱桃花蕾进行了实验,并观察了花蕾结构中冰形成的位置。我们还利用整个越冬期的解剖发育和水溶性染料吸收来确定与过冷能力增减相关的变化。我们的研究结果表明,尽管多个原基可能会同时冻结,但根据对芽进行 DTA 产生的外温推断,冰传播的障碍可能是每个原基所特有的。冰可以在芽鳞片之间和芽轴内部容纳;然而,过冷的充分表达并不依赖于鳞片的存在。解剖学和 DTA 研究表明,初生叶的维管分化与春季过冷的丧失之间存在相关性;这些观察的时间分辨率比以前描述的梅花更高。此外,干扰初花序下面的组织会干扰典型的过冷模式,这表明在 DTA 期间产生的放热更不稳定,数量也更多。总之,甜樱桃花蕾会发生器官外冻结。在冬季,直接对着初生叶的区域的冰传播障碍保护花朵免受冻害,但在春季,初生叶的木质部分化为冰传播提供了通道,从而影响了过冷度。
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来源期刊
Plant Biology
Plant Biology 生物-植物科学
CiteScore
8.20
自引率
2.60%
发文量
109
审稿时长
3 months
期刊介绍: Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology. Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.
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