# 编者信息 熊荣川 明湖实验室 xiongrongchuan@126.com http://blog.sciencenet.cn/u/Bearjazz Herbaceous plants contribute substantially to the diversity and abundance of forests ecosystems, particularly in temperate regions (Gilliam, 2007, 2014; Luo et al., 2016a, 2016b; Wang, Tang Fang, 2007). However, interactions between herbaceous and woody plant layers in community assemblages have long been neglected in forest dynamics models, even though it is widely known that herbaceous species can impact the regeneration of tree species (Murphy, Salpeter Comita, 2016; Thrippleton, Bugmann, Kramer-Priewasser Snell, 2016). DNA barcoding has mainly been used for tree species in forest dynamic plots of tropical, subtropical, and temperate regions (Erickson et al., 2014; Kress et al., 2009; Pei et al., 2015). Thus in many cases, the herbaceous component of the community remains underexplored. In this study, we use DNA barcodes to identify and document the herbaceous and woody flora of a 25-ha subalpine spruce-fir forest dynamics plot on the Yulong Mountain, northwestern Yunnan, China. We aim to address the following three questions: (a) What barcode strategy provides the highest species resolution in a subalpine forest? (b) Do species discrimination rates vary among herbaceous and woody species in this community? (c) Does the number of species within a genus affect species resolution rates in high elevation forest dynamic plots. 草本植物对森林生态系统的多样性和丰富性做出了重大贡献，特别是在温带地区（ Gilliam, 2007, 2014; Luo et al., 2016a, 2016b; Wang, Tang Fang, 2007 ）。尽管众所周知草本物种会影响树种的再生（ Murphy, Salpeter Comita, 2016; Thrippleton, Bugmann, Kramer-Priewasser Snell, 2016 ），但在森林动态模型中，群落组成中草本和木本植物层之间的相互作用却一直被忽视。 DNA 条形码主要用于研究热带、亚热带和温带森林动态样地的树种（ Erickson et al., 2014; Kress et al., 2009; Pei et al., 2015 ）。因此，在许多情况下，该群落的草本成分仍有待研究。本文利用 DNA 条形码对滇西北玉龙雪山 25 公顷亚高山云杉 - 冷杉森林动态样地的草本和木本植物区系进行了鉴定和记录。我们的目标是解决以下三个问题：（ a ）什么条形码策略提供了亚高山森林中最高的物种识别分辨率？（ b ）该群落中草本和木本物种的物种识别率是否不同？（ c ）一个属内的物种数量是否影响高海拔森林动态图中的物种分辨率？ Shao-Lin T , Ya-Huang L , Hollingsworth P M , et al. DNA barcoding herbaceous and woody plant species at a subalpine forest dynamics plot in Southwest China . Ecology and Evolution, 2018.
多年生植物开花，生长与休眠的研究在国内少有论文可以查询。 是不是研究这方面的人很少呀？ A key feature of the perennial life style in plants is the ability to cease meristem activity and to establish a dormant state in which the meristem is rendered insensitive to growth-promoting signals for some time before it is released and can resume growth. The seasonal cycling between growth and dormancy has received little attention despite its importance for perennial behaviour. In this review, we reconsider seasonal cycles of growth and dormancy in view of a new definition of dormancy as a state within the meristem, together with recent exciting developments in the study of perennials, particularly the identification of common signalling intermediates between flowering time and growth cessation in trees.
标签: 木本植物
