Welcome to Journal of University of Chinese Academy of Sciences,Today is

›› 2000, Vol. 17 ›› Issue (2): 74-80.

Previous Articles     Next Articles

Towards Genetic Engineering Cassava(Manihot esculenta Crantz) for Preventing Premature Leaf Shed

Li Hongqing, Li Meiru, Liu Hongxian, Liang Chengye   

  1. South China Institute of Botany, Chinese Academy of Sciences, Guangzhou 510650
  • Received:2000-12-05 Online:2000-03-15

Abstract:

To prevent premature leaf shed in cassava, a construct containing an ipt gene driven by a senescence specific promoter (SAG12 )w as successfully transferred into cassava (M Col 22 )via Agrobacterium- mediated transformation method.Mature cotyledons f rom somatic embryos,which had been cultivated to be maturative for 15 days, were cut into pieces and used as explants for transformation.3 days after inoculation with Agrobacterium, the explants were t ransferred onto the organogenesis induction medium (MS basal medium supplemented with 1 mg/ L BAP and 0.5 mg/ L IBA )with 30 mg/ L G418 for selection.Resistant organ structures and shoots appeared in about 3 weeks, the cultures were later transferred to shoot elongation medium and the resistant shoots were finally rooted on MS basal medium without hormones.PCR and Southern analysis confirmed the transgenic nature of some resistant plants.

Key words: SAG12-ipt gene, cassava, transformation

CLC Number: