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日本对几种典型的黄化和丛枝病,即矮牵牛上感染翠菊黄化“病毒”病,泡桐和马铃薯丛枝病,和桑树矮缩病的病原重新作了研究,发现所有感病植株的韧皮部都有菌原质类的粒体存在,而在健康的植株内则没有。这些菌原质类的粒体只存在于韧皮部的筛管、伴细胞和韧皮部的薄壁组织,只存在于细胞质中。它们的形状有园形、椭园形或不规则形。粒体的直径80—800毫微米。没有细胞壁,有一个膜,直径在100—250毫微米的较小粒体,是近园形的,其中充满直径约为13毫微米的似核糖类的微粒。在许多微粒中可以看到有类似细菌体内去氧核糖核酸绳状物质。直径300毫微米以上粒
Japan has re-studied several typical yellowing and bushling diseases, namely the infection of aster yellowish “virus” disease, paulownia and potato bushy branches, and the pathogen of mulberry dwarf disease on petunias and found that The phloem in all susceptible plants has the presence of mycoplasmas, but not in healthy plants. These bacteriocin-like granules exist only in the phloem sieve, with parenchyma and phloem parenchyma, only in the cytoplasm. Their shapes are round, elliptic or irregular. The diameter of the granules is 80-800 nm. Without a cell wall, there is a membrane, a smaller granule with a diameter of 100-250 nm and a near-circular shape, filled with particles like ribose sugars about 13 nm in diameter. In many particles can be seen similar bacterial in vivo DNA strand. More than 300 nm in diameter