Summary: After Origin Agritech obtained the safety certificate on the
production and application of transphytase corn in Shandong, it made
breakthrough in developing GM corn which has glyphosate tolerance.
Source: Internet
On 29 July, 2015, the Biotechnology Research Institute, China Academy of
Agricultural Sciences (BRI, CAAS) held the Exhibition on Genetically Modified
(GM) Corn Study in Beijing. At the exhibition, the field performance of corn
resistant to pests and glyphosate which was jointly developed by the BRI, CAAS,
the Institute of Plant Protection, CAAS and Origin Agritech Co., Ltd. (Origin
Agritech) was showed. Thereinto, the GM corn resistant to herbicides can endure
more than four times the glyphosate spraying (the usage recommended in field).
At present, the pilot trail of this glyphosate-resistant corn has been finished
and it is under the application of safety certificate on production and
application in Beijing.
Origin Agritech optimized the glyphosate-resistant gene codon that has complete
intellectual property right from the BRI, CAAS, according to the preference of
corn codon, building up the high-efficiency plant expression vector. Then, it
introduced the codon into the corn inbred line through agrobacterium mediation.
After that, Origin Agritech screened the effect and integrated the form of six
consecutive generations of gene from over 8,000 transgenic events, so as to
select the new glyphosate-resistant corn variety with prominent target trait
and stable genetic expression. What's more, Origin Agritech introduced the
glyphosate-resistant gene and corn borer-resistant gene into the corn genome at
the same time, picking out two GM corn strains which are highly resistant to
corn borer and glyphosate. These two strains have been approved to enter the
environmental release test stage and will be applied for pilot trail in Nov.
2015.
From 1998 when the American first generation of glyphosate-resistant corn GA21
has been put into commercial plantation to 2015 when the planting area of
American GM corn reached 86%, the planting area of single herbicide-resistant
GM corn accounts for 12% of the total, while that of herbicide &
pest-resistant GM corn accounts for 77% in the US. Therefore, the planting area
of herbicide-resistant GM corn in the US is 76% higher than the total corn
planting area. It can be seen that the herbicide-resistant GM corn is roundly
popularized in the US. However, compared to the US, China still holds cautious
attitude towards the promotion of herbicide-resistant GM corn.
Nevertheless, China's study on GM corn is not backward. That Origin Agritech
applies for the safety certificate on the glyphosate-resistant GM corn was
another breakthrough after it obtained the safety certificate on transphytase
corn. It is disclosed that Origin Agritech completed a series of preparations
on the industrialization of the transphytase corn seed, such as production of
parent seed of transphytase corn, hybrid seed production, seed processing,
construction of technical specification for quality control and standard
system. Meantime, it has completed the construction of security risk control
system of transphytase corn seed and got ready for the promotion.
CCM predicted that after Chinese government approves the commercial plantation
of GM corn, Origin Agritech is expected to first launch the industrialization
of GM corn seed. Besides, the transphytase corn and glyphosate-resistant corn
will be promoted first.
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