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DOI | 10.1093/plphys/kiab295 |
Seawater exposure causes hydraulic damage in dying Sitka-spruce trees | |
Zhang, Hongxia; Li, Xinrong; Wang, Wenzhi; Pivovaroff, Alexandria L.; Li, Weibin; Zhang, Peipei; Ward, Nicholas D.; Myers-Pigg, Allison; Adams, Henry D.; Leff, Riley; Wang, Anzhi; Yuan, Fenghui; Wu, Jiabing; Yabusaki, Steve; Waichler, Scott; Bailey, Vanessa L.; Guan, Dexin; McDowell, Nate G. | |
通讯作者 | Guan, DX (通讯作者),Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Shenyang 110016, Peoples R China. |
发表日期 | 2021 |
ISSN | 0032-0889 |
EISSN | 1532-2548 |
起始页码 | 873 |
结束页码 | 885 |
卷号 | 187期号:2 |
英文摘要 | Sea-level rise is one of the most critical challenges facing coastal ecosystems under climate change. Observations of elevated tree mortality in global coastal forests are increasing, but important knowledge gaps persist concerning the mechanism of salinity stress-induced nonhalophytic tree mortality. We monitored progressive mortality and associated gas exchange and hydraulic shifts in Sitka-spruce (Picea sitchensis) trees located within a salinity gradient under an ecosystem-scale change of seawater exposure in Washington State, USA. Percentage of live foliated crown (PLFC) decreased and tree mortality increased with increasing soil salinity during the study period. A strong reduction in gas exchange and xylem hydraulic conductivity (K-s) occurred during tree death, with an increase in the percentage loss of conductivity (PLC) and turgor loss point (pi(tlp)). Hydraulic and osmotic shifts reflected that hydraulic function declined from seawater exposure, and dying trees were unable to support osmotic adjustment. Constrained gas exchange was strongly related to hydraulic damage at both stem and leaf levels. Significant correlations between foliar sodium (Na+) concentration and gas exchange and key hydraulic parameters (K-s, PLC, and pi(tlp)) suggest that cellular injury related to the toxic effects of ion accumulation impacted the physiology of these dying trees. This study provides evidence of toxic effects on the cellular function that manifests in all aspects of plant functioning, leading to unfavourable osmotic and hydraulic conditions. |
关键词 | SEA-LEVEL RISEMANGROVE AVICENNIA-GERMINANSTURGOR LOSS POINTWATER RELATIONSGAS-EXCHANGESTOMATAL CONDUCTANCERHIZOPHORA-MANGLEDROUGHT TOLERANCESALT TOLERANCEGREY MANGROVE |
语种 | 英语 |
WOS研究方向 | Plant Sciences |
WOS类目 | Plant Sciences |
WOS记录号 | WOS:000710977100036 |
来源期刊 | PLANT PHYSIOLOGY |
来源机构 | 中国科学院西北生态环境资源研究院 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/255144 |
作者单位 | [Zhang, Hongxia; Li, Xinrong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Peoples R China; [Zhang, Hongxia; Wang, Anzhi; Yuan, Fenghui; Wu, Jiabing; Guan, Dexin] Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Shenyang 110016, Peoples R China; [Zhang, Hongxia; Wang, Wenzhi; Pivovaroff, Alexandria L.; Li, Weibin; Zhang, Peipei; Leff, Riley; McDowell, Nate G.] Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99354 USA; [Wang, Wenzhi] Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolut & Regulat, Chengdu 610041, Peoples R China; [Li, Weibin; Myers-Pigg, Allison] Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland & Agroecosyst, Minist Agr & Rural Affairs,Key Lab Grassland Live, Lanzhou 730020, Peoples R China; [Ward, Nicholas D.] Pacific Northwest Natl Lab, Marine Sci Lab, Sequim, WA 98382, Australia; [Ward, Nicholas D.] Univ Washington, Sch Oceanog, Seattle, WA... |
推荐引用方式 GB/T 7714 | Zhang, Hongxia,Li, Xinrong,Wang, Wenzhi,et al. Seawater exposure causes hydraulic damage in dying Sitka-spruce trees[J]. 中国科学院西北生态环境资源研究院,2021,187(2). |
APA | Zhang, Hongxia.,Li, Xinrong.,Wang, Wenzhi.,Pivovaroff, Alexandria L..,Li, Weibin.,...&McDowell, Nate G..(2021).Seawater exposure causes hydraulic damage in dying Sitka-spruce trees.PLANT PHYSIOLOGY,187(2). |
MLA | Zhang, Hongxia,et al."Seawater exposure causes hydraulic damage in dying Sitka-spruce trees".PLANT PHYSIOLOGY 187.2(2021). |
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