Effects of Hemlock Woolly Adelgid Control Using Imidacloprid on Leaf-Level Physiology of Eastern Hemlock
文献类型：期刊论文
| 作者 | McDonald, Kelly M.1; Seiler, John R.2; Wang, Bingxue3; Salom, Scott M.4; Rhea, Rusty J.5 |
| 刊名 | FORESTS
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 14期号:6页码:12 |
| 关键词 | Adelges tsugae chlorophyll fluorescence Merit needle gas exchange photosynthesis Tsuga canadensis |
| DOI | 10.3390/f14061228 |
| 通讯作者 | Seiler, John R.(jseiler@vt.edu) |
| 英文摘要 | Widespread mortality of eastern hemlock (Tsuga canadensis [L.] Carr.) has been occurring due to the introduction of hemlock woolly adelgid (Adelges tsugae Annand) (HWA), threatening millions of hectares of hemlock-dominated forests in the eastern United States. HWA feeds at the base of needles and removes stored carbohydrates, which can impact leaf-level physiology, contributing to the decline of the tree. However, these physiological mechanisms in HWA-infested hemlocks are still not clearly understood. We investigated hemlock leaf physiology year-round at three forested sites with various degrees of infestation. At each site, half the trees were treated with imidacloprid (Merit(& REG;) 2 F, Bayer, Kansas City, MO, USA) while the rest were left untreated. Imidacloprid is widely used to control HWA but can itself have phytotoxic effects. After one growing season, there was an increase in photosynthetic rates (7.5%, p = 0.0163) and stomatal conductance (7.1%, p = 0.0163) across sites in the trees treated with imidacloprid. After two years, the imidacloprid treatment also increased bud break from 22.5% to 88.7% at Fishburn (the most severely impacted site) and from 22.7% to 58.9% at Mountain Lake (the least impacted site), and slightly increased chlorophyll fluorescence for treated trees at Fishburn. Chemical treatment also slightly increased water use efficiency at Mountain Lake. These results suggest that HWA is causing tree mortality largely through a reduction in leaf area caused by decreasing bud break and also by a slight, but significant, reduction in leaf-level photosynthesis and stomatal conductance. |
| WOS关键词 | TSUGAE INFESTATION ; FOREST ; CANADENSIS ; HOMOPTERA ; NITROGEN ; IMPACTS ; PHOTOSYNTHESIS ; MORTALITY ; CYCLE ; HOST |
| WOS研究方向 | Forestry |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:001015206800001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/195174]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Seiler, John R. |
| 作者单位 | 1.USDA Natl Inst Food & Agr, 805 Penn Ave, Kansas City, MO 64105 USA 2.Virginia Tech, Dept Forest Resources & Environm Conservat, 228 Cheatham Hall 310 West Campus Dr, Blacksburg, VA 24061 USA 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 4.Virginia Tech, Dept Entomol, 210 Price Hall 170 Drillfield Dr, Blacksburg, VA 24061 USA 5.USDA Forest Serv, Southern Res Stn, 200 WT Weaver Blvd, Asheville, NC 28804 USA |
| 推荐引用方式 GB/T 7714 | McDonald, Kelly M.,Seiler, John R.,Wang, Bingxue,et al. Effects of Hemlock Woolly Adelgid Control Using Imidacloprid on Leaf-Level Physiology of Eastern Hemlock[J]. FORESTS,2023,14(6):12. |
| APA | McDonald, Kelly M.,Seiler, John R.,Wang, Bingxue,Salom, Scott M.,&Rhea, Rusty J..(2023).Effects of Hemlock Woolly Adelgid Control Using Imidacloprid on Leaf-Level Physiology of Eastern Hemlock.FORESTS,14(6),12. |
| MLA | McDonald, Kelly M.,et al."Effects of Hemlock Woolly Adelgid Control Using Imidacloprid on Leaf-Level Physiology of Eastern Hemlock".FORESTS 14.6(2023):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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