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小麦矮腥黑粉菌可导致小麦矮腥黑穗病,是麦类黑粉病中危害最大、极难防治的国际重要检疫性病害之一.本研究结合扫描电子显微镜、透射电子显微镜及激光共聚焦显微镜观察该真菌在小麦(Triticum aestivum)体内的侵染过程.经观察发现,被该真菌侵染后的小麦叶片细胞超微结构发生了显著变化,如叶肉细胞畸形、质膜内陷和断裂、细胞核结构破坏及细胞器的基质电子密度下降;细胞间隙出现空细胞和纤维状膜状物等;菌丝随生长点移动;寄主小麦子房及花药被侵染导致无法成功受精.该真菌侵染小麦后不但影响小麦的正常生理,且在寄主小麦的根、茎、旗叶以及看似正常的成熟籽粒中均发现冬孢子.
Wheat dwarf fungus can cause dwarfed head smut, which is one of the most important quarantine diseases in wheat powdery mildew.It is a combination of scanning electron microscopy, transmission electron microscopy and laser scanning electron microscopy The microscopic observation of the fungal infection process in wheat (Triticum aestivum) showed that the ultrastructure of wheat leaf cells infected by this fungus changed significantly, such as mesophyll cell deformity, plasma membrane invagination and rupture , The destruction of nuclear structure and the decrease of matrix electron density of organelles; empty cells and fibrous membranous cells appeared in the interstitial cells; mycelium moved with the growth point; host wheat ovary and anthers were infested, resulting in failure to fertilize successfully Wheat not only affects the normal physiology of wheat, but also finds teliospores in the roots, stems, flag leaves of the host wheat and the seemingly normal mature grains.