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Pathogenetic and physiological mechanisms of poplar ice nucleation active bacterial canker

机译:杨树冰核成活细菌性溃疡病的发病机制及生理机制

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摘要

Using the methods introduced by Bier, X.H. Buchinock, Wang Jing-wen, Shi Rihe et al., different varieties of poplar (poplar-Meixqing, Poplar-A_100, Poplar-Xiaohe_14 et al.) were inoculated with poplar ice nucleation active (INA) bacteria respec- tively in 1997-1999. The water content, relative turgidity, lignin content, phenylalanine ammonialyase (PAL) activity, electrolyte effusion rate, and inorganic element content of poplar bark were measured before and after inoculating. The results showed that after the poplar trees were inoculated with INA bacteria, the moisture content of bark decreased but relative turgidity increased, electrolyte effusion rate increased and had a peak at temperatures of -4 and 5 deg. C., lignin content increased and positively cor- related with poplar's disease-resistance, and the plenylalanine ammonialyase activity increased and also showed a significant positive correlation with poplar's disease-resistance. For the contents of inorganic element, Cu and Fe decreased but K and Zn increased obviously, while Mn, Ca and Mg changed little.
机译:使用Bier(X.H.布基诺克,王静文,施日和等人,分别在1997- 1999年。杨树皮接种前后分别测量其含水量,相对挺度,木质素含量,苯丙氨酸解氨酶(PAL)活性,电解质渗出率和无机元素含量。结果表明,用INA细菌接种杨树后,树皮的水分含量降低,但相对浊度增加,电解质渗出率提高,并在-4和5摄氏度出现一个峰值。 C.,木质素含量增加,并与杨树的抗病力呈正相关,而苯丙氨酸丙氨酸解氨酶的活性增加,并且与杨树的抗病性也呈显着正相关。就无机元素的含量而言,铜和铁减少,而钾和锌明显增加,而锰,钙和镁的变化很小。

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