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Improvement of resistance to rice blast and bacterial leaf streak by CRISPR/Cas9-mediated mutagenesis of Pi21 and OsSULTR3;6 in rice ( Oryza sativa L.)
Ist Teil von
Frontiers in plant science, 2023-07, Vol.14, p.1209384-1209384
Ort / Verlag
Switzerland: Frontiers Media S.A
Erscheinungsjahr
2023
Link zum Volltext
Quelle
EZB Electronic Journals Library
Beschreibungen/Notizen
Rice (
L.) is a staple food in many countries around the world, particularly in China. The production of rice is seriously affected by the bacterial leaf streak and rice blast, which can reduce rice yield or even cause it to fail to be harvested. In this study, susceptible material 58B was edited by CRISPR/Cas9, targeting a target of the
gene and a target of the effector-binding element (EBE) of the
gene, and the mutants
were obtained by Agrobacterium-mediated method. The editing efficiency of the two targets in the T
generation was higher than 90.09%, the homozygous mutants were successfully selected in the T
generation, and the homozygous mutation rate of each target was higher than 26.67%. The expression of the edited
and EBE of
was significantly reduced, and the expression of defense responsive genes was significantly upregulated after infected with rice blast. The lesion areas of rice blast and bacterial leaf streak were significantly reduced in
, and the resistance of both was effectively improved. Furthermore, the gene editing events did not affect the agronomic traits of rice. In this study, the resistance of
to rice blast and bacterial leaf streak was improved simultaneously. This study provides a reference for using Clustered Regularly Interspaced Short Palindromic Repeats/Cas9 (CRISPR/Cas9) to accelerate the improvement of rice varieties and the development of new materials for rice breeding.