RNA-seq reveals the downregulated proteins related to photosynthesis in growth-inhibited rice seedlings induced by low-energy N+ beam implantation

Transcriptomic research based on RNA sequencing (RNA-seq) technology is innovative and will provide new opportunities and biological perspectives for the use of ion-beam implantation in plants.Using RNA-seq, transcriptomes of whole rice seedlings generated from seeds implanted with a low-energy N + beam were analyzed 96 h after planting.We identified 544 transcripts that were differentially expressed genes (DEGs) in the non-growth-inhibited sample implanted by an N + beam, including 262 upregulated transcripts and 282 downregulated transcripts.Next, 776 transcripts were identified as DEGs in significantly damaged and growth-inhibited rice seedlings induced by N + beam implantation, including 283 upregulated transcripts and 493 downregulated transcripts.The Gene Ontology (GO) analysis showed that 19 downregulated DEGs in the injured rice seedlings ©FUNPEC-RP www.funpecrp.com.brGenetics and Molecular Research 13 (3): 7029-7036 (2014) are enriched for the biological process GO term photosynthesis.The Kyoto Encyclopedia of Genes and Genomes pathway analysis also showed that 11 downregulated DEGs related to chlorophyll a/b-binding proteins are statistically significantly enriched in the photosynthesisantenna protein pathway (Pathwayid: map00196).This result suggested that the downregulated and injured photosynthesis system contributed to the growth inhibition of rice seedlings induced by low-energy N + beam implantation.