SOUTHERN CORN LEAF BLIGHT - SUSCEPTIBLE AND RESISTANT MITOCHONDRIA
SOUTHERN CORN LEAF BLIGHT - SUSCEPTIBLE AND RESISTANT MITOCHONDRIA
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DOI：
10.1126/science.173.3991.67
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发表时间：
1971-01-01
期刊：
影响因子：
56.9
通讯作者：
KOEPPE, DE
中科院分区：
文献类型：
--
作者：
MILLER, RJ;KOEPPE, DE
从感病和抗病玉米黄化苗中分离的线粒体在不同的呼吸状态下受到玉米小斑病菌（Helminthosporiummaydis）（T小种）释放的致病毒素的作用。此外，致病毒素易感线粒体引起呼吸频率和氧化磷酸化的变化。此外，致病毒素敏感的线粒体悬浮在氯化钾反应介质诱导立即和不可逆的肿胀，无论线粒体的呼吸状态。这种膜肿胀与所观察到的病原毒素的呼吸作用和偶联作用相关。在所有情况下，从抗枯萎病玉米中分离的线粒体未能表现出对病原毒素的任何上述反应。
Mitochondria isolated from etiolated shoots of blight-susceptible and blight-resistant corn plants were subjected, in various respiratory states, to the pathotoxin released byHelminthosporium maydis(race T). The addition of the pathotoxin to susceptible mitochondria caused respiratory rate and oxidative phosphorylation changes. The addition of pathotoxin to susceptible mitochondria suspended in a potassium chloride reaction medium induced an immediate and irreversible swelling regardless of the respiratory state of the mitochondria. This membrane swelling correlates with the observed respiratory and coupling effects of the pathotoxin. In all instances, mitochondria isolated from blight-resistant corn failed to exhibit any of the above responses to the pathotoxin.