Biotechnology Bulletin ›› 2016, Vol. 32 ›› Issue (6): 89-95.doi: 10.13560/j.cnki.biotech.bull.1985.2016.06.013

• Research report • Previous Articles     Next Articles

Responses of Overexpressed Arabidopsis VHA-c3 to Dark,ABA and Sugar

SU Jie1,2, GUO Rong-qi2,3, LI Guo-jing2, WANG Rui-gang2   

  1. 1. School of Vocational and Technical, Inner Mongolia Agricultural University, Tuyouqi 014109
    2. School of Life Sciences, Inner Mongolia Agricultural University, Hohhot 010018
    3. Agricultural Sciences of Hulunbeier in Inner Mongolia,Yakeshi 162650
  • Received:2015-09-14 Online:2016-06-27 Published:2016-06-28

Abstract: For studying the role of vacuole H+-ATPase subunit c gene(VHA-c3)in plant growth and abiotic stress response,an over-expression vector of VHA-c3 was constructed and introduced into wild-type Arabidopsis thaliana. The expression levels of VHA-c3 in the transgenic homozygote’s plants were detected by semi-quantitative RT-PCR,then the transgenic homozygote were treated by dark,ABA and sugar. The results indicated that 6 lines of homozygous T2 transgenic plants were obtained,and their corresponding transcript levels were increased. The root lengths of 5 lines were reduced among the dark-grown seedlings. Among the ABA-treated seedlings,3 lines were insensitive in primary root growth and the extent of cotyledon unfolding,and 5 lines were insensitive in seed germination. When treated by glucose and sucrose,5 lines and 6 lines reduced the sensitivity in seed germination,respectively. These results indicate that VHA-c3 may affect the cell expansion of root,and be involved in the signal transduction pathways mediated by ABA and sugar.

Key words: Arabidopsis thaliana, VHA-c3, dark, ABA, sugar