Plant Cell Reports

, Volume 34, Issue 6, pp 1049–1061

Transformation of rice with large maize genomic DNA fragments containing high content repetitive sequences

  • Yafei Wang
  • Haiyang Zeng
  • Xu Zhou
  • Fei Huang
  • Wei Peng
  • Lin Liu
  • Wentao Xiong
  • Xue Shi
  • Meizhong Luo
Original Paper

DOI: 10.1007/s00299-015-1764-2

Cite this article as:
Wang, Y., Zeng, H., Zhou, X. et al. Plant Cell Rep (2015) 34: 1049. doi:10.1007/s00299-015-1764-2
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Abstract

Key message

Large and complex maize BIBAC inserts, even with a length of about 164 kb and repeat sequences of 88.1 %, were transferred into rice.

Abstract

The BIBAC vector has been established to clone large DNA fragments and directly transfer them into plants. Previously, we have constructed a maize B73 BIBAC library and demonstrated that the BIBAC clones were stable in Agrobacterium. In this study, we demonstrated that the maize BIBAC clones could be used for rice genetic transformation through Agrobacterium-mediated method, although the average transformation efficiency for the BIBAC clones (0.86 %) is much lower than that for generally used binary vectors containing small DNA fragments (15.24 %). The 164-kb B73 genomic DNA insert of the BIBAC clone B2-6 containing five maize gene models and 88.1 % of repetitive sequences was transferred into rice. In 18.75 % (3/16) of the T1, 13.79 % (4/29) of the T2, and 5.26 % (1/19) of the T3 generation transgenic rice plants positive for the GUS and HYG marker genes, all the five maize genes can be detected. To our knowledge, this is the largest and highest content of repeat sequence-containing DNA fragment that was successfully transferred into plants. Gene expression analysis (RT-PCR) showed that the expression of three out of five genes could be detected in the leaves of the transgenic rice plants. Our study showed a potential to massively use maize genome resource for rice breeding by mass transformation of rice with large maize genomic DNA fragment BIBAC clones.

Keywords

BIBAC Large DNA fragment Genetic transformation Agrobacterium Rice Maize 

Abbreviations

BAC

Bacterial artificial chromosome

BIBAC

Binary BAC

BLAST

Basic local alignments search tool

TAC

Transformation-competent artificial chromosome

PFGE

Pulsed-field gel electrophoresis

Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Yafei Wang
    • 1
  • Haiyang Zeng
    • 1
  • Xu Zhou
    • 1
  • Fei Huang
    • 1
  • Wei Peng
    • 1
  • Lin Liu
    • 1
  • Wentao Xiong
    • 1
  • Xue Shi
    • 1
  • Meizhong Luo
    • 1
  1. 1.National Key Laboratory of Crop Genetic Improvement and College of Life Science and TechnologyHuazhong Agricultural UniversityWuhanChina

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