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Journal of Tea Science ›› 2016, Vol. 36 ›› Issue (2): 191-200.doi: 10.13305/j.cnki.jts.2016.02.010

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Contents of Glomalin-related Soil Protein and Its Correlations with Soil Factors in the Rhizosphere of Tea Plant [Camellia Sinensis(L.) O. Kuntze]

GAO Xiubing1, XING Dan2, CHEN Yao1, ZHOU Fuyu1, ZHAO Huafu1, CHEN Juan1, GUO Can1, ZHOU Yufeng1,*   

  1. 1. Tea Research Institute, Guizhou Academy of Agricultural Science, Guiyang 550006, China;
    2. Institute of Pepper, Guizhou Academy of Agricultural Science, Guiyang 550006, China
  • Received:2015-09-21 Online:2016-04-15 Published:2019-08-23

Abstract: Glomalin-related soil protein (GRSP) is a kind of glycoprotein containing metal ions that are secreted by arbuscular mycorrhizal fungi (AMF). It plays an important role in maintaining physiological functions of AMF and stabilization of soil organic carbon and soil aggregate. In this paper, the contents of GRSP and its correlations with soil factors were analyzed in the rhizosphere of tea plant [Camellia Sinensis(L.) O. Kuntze]. Total glomalin-related soil protein (T-GRSP) and easily extractable glomalin-related soil protein (EE-GRSP) as well as soil factors were investigated by Bradford and conventional soil factors analysis method in four key tea planting areas (Meitan county Shiqian county Guiding county and Douyun city) of Guizhou province southwest China. The results showed that GRSP levels were dependent on both rhizospheres of different tea cultivars and planting areas. The range of T-GRSP and EE-GRSP were 5.71-22.84 mg·g-1 and 2.35-7.91 mg·g-1; with average of 12.96 mg·g-1 and 4.88 mg·g-1 respectively. Correlation analysis showed that T-GRSP was significant positive correlation with hydrolysable nitrogen (Nh); organic matter (OM) and available potassium (Pa). EE-GRSP was positive correlated with Nh Pa and OM but negative correlated with soil pH. The result of multiple linear regression equation showed that different soil factors showed different impact on the content of T-GRSP and EE-GRSP. For T-GRSP: Nh > Pa > OM. For EE-GRSP: OM > Pa. These results showed the GRSP was remarkably abundant in the rhizosphere of tea plant and closely related with soil factors; so the content of GRSP may be an appropriate index for evaluating soil quality in tea garden.

Key words: tea tree (Camellia Sinensis), arbuscular mycorrhiza fungi, glomalin-related soil protein, soil factors

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