Disruption of OsSEC3A Induces Plant Defense Responses in Rice
February 21, 2018| |
The exocyst, a protein complex involved in exocytosis, has been reported to be involved in plant growth and development in Arabidopsis. However, the functions of exocytotic molecules in rice are poorly understood. A team of researchers led by Jin Ma from Peking University in China examined the function of OsSEC3A, an important subunit of the exocyst protein complex in rice using CRISPR-Cas9.
The team generated rice lines with silenced OsSEC3A using CRISPR-Cas9 gene editing. The resulting lines exhibited dwarf stature and a lesion-mimic phenotype. The Ossec3a mutant also exhibited enhanced defense responses and enhanced resistance to the fungal pathogen Magnaporthe oryzae. Furthermore, OsSEC3A was revealed to interact with rice protein OsSNAP32, which is involved in rice blast resistance.
These findings reveal the function of rice exocyst subunit SEC3 in defense response.
For more information on this study, read the article in Journal of Experimental Biology.
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