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Transcriptome Reveals the Rice Response to Elevated Free Air CO2 Concentration and TiO2 Nanoparticles
Xu, Mei-Ling; Zhu, Yong-Guan; Gu, Kai-Hua; Zhu, Jian-Guo; Yin, Ying; Ji, Rong; Du, Wen-Chao; Guo, Hong-Yan
2019-10-15
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume53Issue:20Pages:11714-11724
AbstractIncreasing CO2 levels are speculated to change the effects of engineered nanomaterials in soil and on plant growth. How plants will respond to a combination of elevated CO2 and nanomaterials stress has rarely been investigated, and the underlying mechanism remains largely unknown. Here, we conducted a field experiment to investigate the rice (Oryza TiO2, 0 and 200 mg kg(-1)) using a free-air CO2 enrichment system with different CO2 levels (ambient similar to 370 mu mol mol(-1) and elevated similar to 570 mu mol mol(-1)). The results showed that elevated CO2 or nano-TiO2 alone did not significantly affect rice chlorophyll content and antioxidant enzyme activities. However, in the presence of nano-TiO2, elevated CO2 significantly enhanced the rice height, shoot biomass, and panicle biomass (by 9.4%, 12.8%, and 15.8%, respectively). Furthermore, the Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis revealed that genes involved in photosynthesis were up-regulated while most genes associated with secondary metabolite biosynthesis were down-regulated in combination-treated rice. This indicated that elevated CO2 and nano-TiO2 might stimulate rice growth by adjusting resource allocation between photosynthesis and metabolism. This study provides novel insights into rice responses to increasing contamination under climate change.
Department土壤环境科学与技术实验室
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/43318
Collection土壤环境科学实验室
Affiliation1.Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China
2.Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Xiamen 361021, Fujian, Peoples R China
3.Chinese Acad Sci, State Key Lab Urban & Reg Ecol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
Recommended Citation
GB/T 7714
Xu, Mei-Ling,Zhu, Yong-Guan,Gu, Kai-Hua,et al. Transcriptome Reveals the Rice Response to Elevated Free Air CO2 Concentration and TiO2 Nanoparticles[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2019,53(20):11714-11724.
APA Xu, Mei-Ling.,Zhu, Yong-Guan.,Gu, Kai-Hua.,Zhu, Jian-Guo.,Yin, Ying.,...&Guo, Hong-Yan.(2019).Transcriptome Reveals the Rice Response to Elevated Free Air CO2 Concentration and TiO2 Nanoparticles.ENVIRONMENTAL SCIENCE & TECHNOLOGY,53(20),11714-11724.
MLA Xu, Mei-Ling,et al."Transcriptome Reveals the Rice Response to Elevated Free Air CO2 Concentration and TiO2 Nanoparticles".ENVIRONMENTAL SCIENCE & TECHNOLOGY 53.20(2019):11714-11724.
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