Fertile Transgenic Indica Rice Produced by Expression of Maize Ubiquitin Promoter-bar Chimaeric Gene in the Protoplasts

1997 ◽  
Vol 6 (2) ◽  
pp. 69-73 ◽  
Author(s):  
B. Bhattacharjee ◽  
Gynheung An ◽  
H. S. Gupta
1993 ◽  
Vol 23 (3) ◽  
pp. 567-581 ◽  
Author(s):  
Maria-Jes�s Cornejo ◽  
Diane Luth ◽  
Kathleen M. Blankenship ◽  
Olin D. Anderson ◽  
Ann E. Blechl

Agriculture ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 751
Author(s):  
Changshuang Jing ◽  
Min Wei ◽  
Peng Fang ◽  
Rentao Song ◽  
Weiwei Qi

The CRISPR/Cas9 system has been widely utilized in plant biotechnology as a gene editing tool. However, a conventional design with ubiquitously expressed CRISPR/Cas9 was observed to cause large numbers of somatic mutations that complicated the identification of heritable mutations. We constructed a pollen-specific CRISPR/Cas9 (PSC) system using pollen-specific promoters of maize Profilin 1 and Profilin 3 (pZmPRO1 and pZmPRO3) to drive Cas9 expression, and the bZIP transcription factor Opaque2 (O2) was employed as the target gene. The maize ubiquitin promoter (pZmUbi)-driven CRISPR/Cas9 (UC) system was employed as a control. We generated transgenic plants for the PSC and UC systems and analyzed three independent events for each system. We found that the pZmPRO1 PSC system generated no target gene mutations in the T0 generation but successfully generated 0–90% target gene mutations in the T1 generation. A total of 31 of 33 mutations in the T1 generation could be inherited in the T2 generation. In addition, 88.9–97.3% of T2 mutations were from the T1 generation. The UC system generated mutations in the T0 generation, and 0%, 50% and 92.9% of T1 mutations were from the T0 generation. Our results demonstrate that the PSC system provided stable, heritable mutants in the next generation, and this approach might also be applied in other crops using germinal cell-specific CRISPR/Cas9 systems to facilitate plant breeding.


Crop Science ◽  
1977 ◽  
Vol 17 (6) ◽  
pp. 860-863 ◽  
Author(s):  
A. Padma ◽  
G. M. Reddy

2021 ◽  
Vol 345 ◽  
pp. 128861
Author(s):  
Amandeep Kaur ◽  
Amardeep Singh Virdi ◽  
Narpinder Singh ◽  
Amandeep Singh ◽  
Raj Sukhwinder Singh Kaler

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