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学科主题: 药学
题名:
Effects of parasitic plant Cistanche deserticola on chlorophyll a fluorescence and nutrient accumulation of host plant Haloxylon ammodendron in the Taklimakan Desert
作者: Li, Li1,2; Xu, XinWen2; Sun, YongQiang2; Han, Wei2; Tu, PengFei3
关键词: parasite-host relation ; nutrient acquisition ; inorganic ion content ; non-photochemical quenching ; the Taklimakan Desert
刊名: JOURNAL OF ARID LAND
发表日期: 2012-09-01
DOI: 10.3724/SP.J.1227.2012.00342
卷: 4, 期:3, 页:342-348
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
关键词[WOS]: SALT TOLERANCE ; ROOT ; PARAMETERS ; EXCITATION ; POTASSIUM ; CHLORIDE ; SODIUM ; BARLEY ; GROWTH ; K+
英文摘要:

The parasitic plant Cistanche deserticola attaches to Haloxylon ammodendron, a perennial shrub with high tolerance to salinity and drought. However, little was known about the parasite-host relation between the two species. Effects of the parasite on chlorophyll a fluorescence and nutrient accumulation in the host plant (H. ammodendron) were investigated in the Taklimakan Desert. Some photosynthetic parameters of both host and non-host H. ammodendron plants were measured by in vivo chlorophyll a fluorescence technology in the field. The assimilating branches of host and non-host plants were collected and nutrient and inorganic ion contents were analyzed. The results from field experiments showed that the infection of C. deserticola reduced the non-photochemical quenching of the variable chlorophyll fluorescence (NPQ) and the potential maximum quantum yield for primary photochemistry (F-v/F-m) of the host. Compared with non-host plants, the host H. ammodendron had low nutrient, low inorganic ion contents (Na+ and K+) and low K+/Na+ ratios in the assimilating branches. It suggested that C. deserticola infection reduced the nutrient acquisition and caused damage to the photoprotection through thermal dissipation of the energy of the photosystem II in the host, resulting in a decrease in the tolerance to salinity and high radiation. It was concluded that the attachment of the parasite plant (C. deserticola) had negative effects on the growth of its host.

语种: 英语
所属项目编号: lhxz200901
项目资助者: Chinese Academy of Sciences
WOS记录号: WOS:000307201200012
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/61724
Appears in Collections:北京大学药学院_期刊论文

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作者单位: 1.Cele Natl Stn Observat & Res Desert Grassland Eco, Cele 848300, Peoples R China
2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China
3.Peking Univ, Hlth Sci Ctr, Sch Pharmaceut Sci, State Key Lab Nat & Biomimet Drugs, Beijing 100191, Peoples R China

Recommended Citation:
Li, Li,Xu, XinWen,Sun, YongQiang,et al. Effects of parasitic plant Cistanche deserticola on chlorophyll a fluorescence and nutrient accumulation of host plant Haloxylon ammodendron in the Taklimakan Desert[J]. JOURNAL OF ARID LAND,2012,4(3):342-348.
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