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干旱区科学  2012, Vol. 4 Issue (3): 342-348    DOI: 10.3724/SP.J.1227.2012.00342
  学术论文 本期目录 | 过刊浏览 | 高级检索 |
Effects of parasitic plant Cistanche deserticola on chlorophyll a fluorescence and nutrient accumulation of host plant Haloxylon ammodendron in the Taklimakan Desert
Li LI1,2, XinWen XU2, YongQiang SUN2, Wei HAN2, PengFei TU3
1 Cele National Station of Observation & Research for Desert-Grassland Ecosystem in Xinjiang, Cele 848300, China;
2 Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
3 State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
Effects of parasitic plant Cistanche deserticola on chlorophyll a fluorescence and nutrient accumulation of host plant Haloxylon ammodendron in the Taklimakan Desert
Li LI1,2, XinWen XU2, YongQiang SUN2, Wei HAN2, PengFei TU3
1 Cele National Station of Observation & Research for Desert-Grassland Ecosystem in Xinjiang, Cele 848300, China;
2 Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
3 State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
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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 (Fv/Fm) 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.
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YongQiang SU
Li LI
XinWen XU
Wei HAN
PengFei TU
关键词:  Calligonum mongolicum  related species  soil properties  fruit size  correlation
 
    
Abstract: 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 (Fv/Fm) 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.
Key words:  Calligonum mongolicum    related species    soil properties    fruit size    correlation
 
收稿日期:  2011-12-10      修回日期:  2012-04-08           出版日期:  2012-09-03      发布日期:  2012-06-01      期的出版日期:  2012-09-03
通讯作者:  Li LI    E-mail:  li_ly@ms.xjb.ac.cn
引用本文:    
Li LI, XinWen XU, YongQiang SU, Wei HAN, PengFei TU. Effects of parasitic plant Cistanche deserticola on chlorophyll a fluorescence and nutrient accumulation of host plant Haloxylon ammodendron in the Taklimakan Desert[J]. 干旱区科学, 2012, 4(3): 342-348.
Li LI, XinWen XU, YongQiang SU, Wei HAN, PengFei TU. Effects of parasitic plant Cistanche deserticola on chlorophyll a fluorescence and nutrient accumulation of host plant Haloxylon ammodendron in the Taklimakan Desert. Journal of Arid Land, 2012, 4(3): 342-348.
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