Abstract
The role that the putative thylakoid lumenal cyclophilin (CYP) CYP20-2 locates in the thylakoid, and whether CYP20-2 is an essential gene, have not yet been elucidated. Here, we show that CYP20-2 is well conserved in several photosynthetic plants and that the transcript level of the rice OsCYP20-2 gene is highly regulated under abiotic stress. We found that ectopic expression of rice OsCYP20-2 in both tobacco and Arabidopsis confers enhanced tolerance to osmotic stress and extremely high light. Based on these results, we suggest that although the exact biochemical function of OsCYP20-2 in the thylakoid lumen (TL) remains unclear, it may be involved in photosynthetic acclimation to help plants cope with environmental stress; the OsCYP20-2 gene may be a candidate for enhancing multiple abiotic stress tolerance.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adaptation, Physiological* / drug effects
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Adaptation, Physiological* / genetics
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Adaptation, Physiological* / radiation effects
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Amino Acid Sequence
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Arabidopsis / drug effects
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Arabidopsis / genetics
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Arabidopsis / physiology*
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Arabidopsis / radiation effects
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Conserved Sequence / genetics
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Cyclophilins / chemistry
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Cyclophilins / genetics
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Cyclophilins / metabolism
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Droughts
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Environment*
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Gene Expression Regulation, Plant / drug effects
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Gene Expression Regulation, Plant / radiation effects
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Genes, Plant / genetics
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Light
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Molecular Sequence Data
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NADPH Dehydrogenase / metabolism
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Nicotiana / drug effects
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Nicotiana / genetics
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Nicotiana / physiology*
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Nicotiana / radiation effects
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Oryza / drug effects
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Oryza / metabolism*
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Oryza / radiation effects
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Paraquat / pharmacology
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Peptidylprolyl Isomerase / metabolism
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Photosystem II Protein Complex / metabolism
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Phylogeny
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Plant Proteins / chemistry
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Plant Proteins / genetics
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Plant Proteins / metabolism
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Plants, Genetically Modified
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Sequence Alignment
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Stress, Physiological* / drug effects
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Stress, Physiological* / genetics
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Stress, Physiological* / radiation effects
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Thylakoids / drug effects
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Thylakoids / enzymology
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Thylakoids / metabolism*
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Thylakoids / radiation effects
Substances
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Photosystem II Protein Complex
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Plant Proteins
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NADPH Dehydrogenase
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Cyclophilins
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Peptidylprolyl Isomerase
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Paraquat