In thermotolerance tests of tropical tree leaves, the chlorophyll fluorescence parameter Fv/Fm measured soon after heat exposure is not a reliable predictor of tissue necrosis

IF 4.2 3区 生物学 Q1 PLANT SCIENCES
Plant Biology Pub Date : 2024-10-29 DOI:10.1111/plb.13732
K. Winter, C. R. Krüger Nuñez, M. Slot, A. Virgo
{"title":"In thermotolerance tests of tropical tree leaves, the chlorophyll fluorescence parameter Fv/Fm measured soon after heat exposure is not a reliable predictor of tissue necrosis","authors":"K. Winter,&nbsp;C. R. Krüger Nuñez,&nbsp;M. Slot,&nbsp;A. Virgo","doi":"10.1111/plb.13732","DOIUrl":null,"url":null,"abstract":"<p>\n </p>","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":"27 1","pages":"146-153"},"PeriodicalIF":4.2000,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11656277/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plant Biology","FirstCategoryId":"99","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/plb.13732","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
引用次数: 0

Abstract

Abstract Image

在热带树木叶片的耐热性试验中,暴露于高温后不久测量的叶绿素荧光参数 Fv/Fm 并不能可靠地预测组织坏死。
热带雨林气候炎热,可能对持续的人为全球变暖特别敏感。因此,人们对热带树木的耐热性越来越感兴趣。对两种热带树种(Terminalia catappa 和 Coccoloba uvifera)叶片的耐热性进行了测定,方法是将叶片样本置于 15 分钟的热处理中,然后测量 24 小时和 14 天后的潜在光系统 II 量子产率(叶绿素 a 荧光的可变/最大值的暗适应值,Fv/Fm),以及 14 天后的可见损伤(坏死)。T50(24 小时),即加热处理 24 小时后 Fv/Fm 下降 50%的温度,在 C. uvifera 中仅与约 10%的叶面积损伤有关,而在 T. catappa 中则没有损伤。这两个物种在 T5(24 小时)温度下都没有观察到叶片坏死,该温度下 Fv/Fm 下降了 5%。在这两个物种中,50% 的叶片面积坏死所需的温度明显高于 T50(24 小时)。T50(14 天)比 T50(24 小时)更能代表可见的叶片损伤。热引起的 Fv/Fm 下降与组织坏死之间的关系因物种而异。在对叶片耐热性进行物种调查时,建议根据坏死试验校准所调查的每个物种的 Fv/Fm 分析。热暴露后不久进行的 Fv/Fm 测量不能可靠地预测不可逆转的热损伤,因此可能不适合模拟和预测热带林木的耐热性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
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.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信