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Issue:ISSN 2095-1353
           CN 11-6020/Q
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Your Position :Home->Past Journals Catalog->2021年58 No.1

Interrelation between Chreonoma atritarsis Pic. and the nutrient content and secondary metabolites of the host plant Camellia oleifera
Author of the article:HUANG Xin;LI Xiao-Zhen;YAO Zhi-Wen;XIAO Bin;XU Fan-Shu;WANG Guang-Li
Author's Workplace:1. College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China; 2. Jiangxi Agricultual Engineering College, Yichun 331200, China; 3. Jiangxi Forest Pest Control and Quarantine Bureau, Nanchang 330038, China
Key Words:Camellia oleifera Abel; Chreonoma atritarsis Pic.; nutriment; secondary metabolites; correlation
Abstract:
[Objectives]  To determine the correlation between the occurrence of Chreonoma atritarsis and the nutrient and secondary metabolite content of its host plant, the oil tree, Camellia oleifera. [Methods]  The five-point method was used to investigate C. atritarsis damage to young and adult oil trees. The water content and the total soluble sugar, reducing sugar, soluble protein, and the main secondary metabolites; i.e. total phenols, condensed tannins and flavonoids, among branches of different ages were quantified by oven drying, anthronecolorimetry, the 3,5-dinitrosaliculic acid method (DNS colorimetry), and staining with Coomassie brilliant blue G250. The correlation between the amount of damage and the content of each substance was then analysed statistically. [Results]  Forest survey results indicate that most C. atritarsis damage to young oil tea trees was on branches at a height of ≤50 cm and a diameter of >1 cm, especially those with a diameter of 1-2 cm. In adult trees, branches at a height of > 50 cm and a diameter of >1cm sustained more damage, especially those with a diameter of >2 cm. The results of laboratory studies revealed that the most abundant nutrient and secondary metabolite contents of oil tea trees were, in descending order; soluble total sugar, reducing sugar, total phenols, condensed tannins, soluble protein and flavonoids. Among these, there was a significant difference in the content of each substance in the phloem and xylem of branches. The damage inflicted by C. atritarsis on young trees was negatively correlated with the ratio of reducing sugar to soluble total sugar, and positively correlated with soluble protein content. In adult trees, damage was negatively correlated with total phenols and condensed tannin content. [Conclusion]  There was a significant, positive correlation between the amount of C. atritarsis damage and soluble protein content in oil tree branches, and a significant, negative correlation between the amount of C. atritarsis damage and the ratio of reducing sugar to soluble total sugar, total phenols and condensed tannin content. Monitoring for C. atritarsis should take into consideration both tree age and branch diameter. These results facilitate more effective monitoring, and obtaining early warning of outbreaks, of C. atritarsis
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