烟促种子萌发研究新进展
Advances in research on smoke-promoted seed germination
许宏力 1田亮 2杨晓菲 2聂强 2曹德昌2
作者信息
- 1. 中国科学院昆明植物研究所中国西南野生生物种质资源库,昆明 650201;云南大学生态与环境学院,昆明 650091
- 2. 中国科学院昆明植物研究所中国西南野生生物种质资源库,昆明 650201
- 折叠
摘要
野火是全球陆地生态系统植被更新的重要驱动力,野火伴生的烟气含有多种活性化合物,可以促进火后植物的种子萌发.传统观点认为,烟气中普遍含有纤维素热解产生的Karrikin类物质,是促进火后种子萌发的主要烟信号化合物.最新研究发现,木质素热解产生的丁香醛也可以促进火后植物的种子萌发.本文综述了烟信号化合物的发现历程,阐释了烟信号化合物与植物火后更新的生态相关性,并对植物烟信号适应性的演化进行了探讨.在此基础上,本文提出了烟促种子萌发研究领域仍待解答的一些科学问题,并对本领域的未来研究方向进行了展望.
Abstract
Fire is an important driver of plant regeneration in global terrestrial ecosystems.Post-fire seed germina-tion is a critical adaptive feature of plants in fire-prone environments.Smoke produced by pyrolysis of plant materi-als in wildfire contains various active chemical compounds,which can activate soil seed bank via initiating post-fire seed germination.Karrikins produced by cellulose pyrolysis are usually considered as the primary smoke cue that promotes seed germination.Recently,it has been found that lignin-promoted syringaldehyde can also trigger seed germination of post-fire plants.Here,we review the history of research on smoke cues and their ecological relevance to post-fire plant regeneration,and discuss the evolutionary aspects of smoke adaptation of plants.On basis of these discussions,we propose some important scientific questions about smoke-promoted seed germination to get some perspective on future research.
关键词
烟信号/丁香醛/木质素/火适应性/火后萌发Key words
smoke cue/syringaldehyde/lignin/fire adaptation/post-fire germination引用本文复制引用
基金项目
云南省科协青年科技人才托举工程项目(530000221100000144054-4)
云南省"兴滇英才"支持计划青年人才专项资助()
出版年
2024
国家科技期刊平台
NSTL
万方数据