摘要
在真核生物中，DNA甲基化可导致基因特异表达、细胞分化和染色体失活等，可在不改变DNA碱基排列顺序的同时，阻断遗传信息的传递，
Witches＇ broom is one of the most serious diseases in Paulownia production. Morphological changes of the witches＇ broom seedlings of Paulownia tomentosa treated with methyl methanesulphonate and SSR analysis were investigated in order to further study the relation between the disease and DNA changes. The resuits indicated that the diseased seedlings treated with optimal concentration of MMS might turn into the ones without symptom morphologically, but there still existed the phytoplasma in the seedlings treated with 20 mg·L^-1 MMS. Not only might MMS of which the concentrations were more than 80 mg·L^-1 eliminates the phytoplasma from the seedlings, but also inhibits the seedling growth. DNA base sequences of the healthy, diseased and the diseased-treated with 20 and 100 mg·L^-1 MMS seedlings were the same at SSR level.
出处
《植物病理学报》
CAS
CSCD
北大核心
2012年第2期214-218,共5页
Acta Phytopathologica Sinica
基金
国家自然科学基金项目(30271082
30571496)
高等学校博士学科点专项科研基金项目(20050466003)
中国博士后基金项目(20070410874)
