Effects of Fusarium oxysporum f.sp.cubense Toxin on the Ultrastructure of Banana Leaves
香蕉枯萎病菌毒素对香蕉叶片超微结构的影响

The effects of fusaric acid and Fusarium oxysporum f.sp.cubense race 4 toxin on the ultrastructure of Xinbei banana and Baxi banana leaf tissue were studied.The results showed that the leaf ultrastructure of either Xinbei banana or Baxi banana began to appear damages after being treated with toxin in 2 hours,and 12 hours later the damages achieved the most seriously included plasmolysis;reduction of chloroplast and starch granules;appearance of osmiophilic granules;decomposition of chloroplast lamella;reduc...