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Studies on Change of Protein Content in Diseased Tomato Plants Infected by Root-knot Nematodes

MA Jie 1,WU Hui ping 2,YANG Rong zheng 2,HUANG Guan sheng 3 (1.Lingbi Seed Company of Anhui,Lingbi 234200;2 Department of Plant Protection,Anhui Agricultural University; 3.State Administration for Imort Export Inspection and Qurantine of the Pe  
The protein contents of different root parts from both were tested by Kreldehl's method the diseased tomato plants infected by Meloidogyne incoguita and from healthy tomato plants.The results indicated that the protein content in root knots,at a certain period of tomato's growing stage,was higher than that of noninfected roots of the same plant,and higher also than that of corresponding parts of noninfected tomatoes.The protein content in the root knot kept increasing in the course of the knot's development and began to decrease as soon as the knots got rotten.The gap of protein content between root knot and noninfected root was gradually widened in the early and middle growing stage of tomato.However,the total protein content (including roots,stems,leaves and fruit) in infected tomato was much lower than that in noninfected tomato plant.
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