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Bipolaris maydis race T toxin on corn leaf peroxidase activity induced by


Hormone treatment with high concentrations of toxin received the C10OD the activity of Tab. 1Chang ~ ofperoxidaseactivityofC103inducedbyfiltrationofB/po/ar/smayd/sl '/ ~ eTtoxing / g (FW) 4 Dicai Xia, et al: Bipolaris maydis race T toxin on corn leaf peroxidase activity induced by 389 Table 2 received treatment with low concentration of toxin toxin treatment of high concentration of activity G10OD Tab. 2ChangesofperoxidaseactivityofC103inducedbyfiltrationofmayd/staeeTtoxinpg/g (FW) can be seen from the above results with low concentrations of toxin filtrate POD activity in leaves of maize increased in varying degrees. After dilution to 1:40,1:45,1:50 Bipolaris maydis race T toxin filtrate pretreatment CMS-TC103 were followed by maize and control of the higher concentration of toxin filtrate 1:20 later, in 0 ~ 24h Changes between the activity of POD were decreased, but increased in the 48h peak,[link widoczny dla zalogowanych], 48 ~ 72h and declining trend in the 72 ~ 96h to maintain between the POD activity was almost certain values, the trend is more stable. The low concentration of T toxin pretreatment, were followed by higher concentration of toxin filtrate after 1:20 in the 0 ~ 96h, no matter how the change of POD activity, C103T, POD activity in leaves of maize were higher than those of similar low concentrations of toxins without the pre-leaf treated controls. Confirmed that low concentrations of the above filtrate toxin T T cytoplasm maize leaves to play a small spot of pre-induction of pathogen resistance to the role of T race. In this experiment, low concentrations of 1:40,[link widoczny dla zalogowanych], the best T toxin pretreatment. The low concentration of Bipolaris maydis race T toxin filtrate N cytoplasm maize leaves in a similar trend although the activity of POD, but the role played by the induction of the former is not as obvious. 3 discusses some related enzymes in plant disease resistance, disease resistance can be used as a biochemical marker identification. Oxidative enzymes (such as peroxidase, polyphenol oxidase) can phenols into lignin, phytoalexin, so as to improve plant disease resistance ��5l. Repeated this experiment confirmed that pretreatment with low concentrations of T toxin filtrate C103 'blades,[link widoczny dla zalogowanych], can increase the activity of POD in leaves of maize to the cytoplasm of T toxin induced fluid resistance. Directly generated within the leaf biochemical reactions and resistance to leaf surface is consistent pathological response of direct evidence. T T cytoplasm of the toxin from the expertise of the toxic effect, it is cytoplasmic in the trial of the N fluid with low concentrations of toxin pretreatment of T can not play the role of induced resistance. So far no anti-bred race T-T cytoplasm varieties (lines) coverage; this may be it is difficult to control by any means or T race T toxin on T cytoplasm hazards. In this experiment, pretreatment of T toxin,[link widoczny dla zalogowanych], can be activated to induce T cytoplasm of T toxin resistance, which is specially instructive role in disease prevention and treatment resistance. ��
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