Abstract
Abstract The effects of exogenous spermidine (Spd) on lipid peroxidation, relative plasma membrane permeability, photosystem II (PSII) gene expression and PSII photochemical activity in water‐stressed wheat seedlings were investigated. The decrease in relative water content (RWC), Chl content, and 2,6‐dichlorophenol indophenol (DCIP) photoreduction of PSII, and increases in electrolyte leakage of plasma membranes and malonyldialdehyde (MDA) in water‐stressed leaves was alleviated by Spd pretreatment. Furthermore, Western and Northern blot analysis showed that decreases in the PSII major proteins D1, D2 and LHCII and the transcripts of corresponding genes psbA, psbD and cab were also alleviated by Spd pretreatment under water stress. These results suggest that the application of exogenous Spd protects PSII against water stress at both the transcriptional level and the translational level, and allows PSII to retain a higher activity level during water stress. The protective role of Spd in the photosynthetic apparatus also is discussed. (Managing editor: Ping He)
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Claims 4
Claim · model-written summary
Spermidine pretreatment alleviated water-stress decreases in relative water content, chlorophyll content and DCIP photoreduction of PSII in wheat.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- Spd pretreatmente1
- Outcome
- relative water content (RWC), Chl content, and 2,6‐dichlorophenol indophenol (DCIP) photoreduction of PSIIe1
- Direction
- alleviatede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in water‐stressed wheat seedlings”
e1“The decrease in relative water content (RWC), Chl content, and 2,6‐dichlorophenol indophenol (DCIP) photoreduction of PSII, and increases in electrolyte leakage of plasma membranes and malonyldialdehyde (MDA) in water‐stressed leaves was alleviated by Spd pretreatment”
Claim · model-written summary
Spermidine pretreatment alleviated water-stress increases in electrolyte leakage and malondialdehyde in wheat leaves.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Spd pretreatmente1
- Outcome
- electrolyte leakage of plasma membranes and malonyldialdehyde (MDA)e1
- Direction
- alleviatede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in water‐stressed wheat seedlings”
e1“The decrease in relative water content (RWC), Chl content, and 2,6‐dichlorophenol indophenol (DCIP) photoreduction of PSII, and increases in electrolyte leakage of plasma membranes and malonyldialdehyde (MDA) in water‐stressed leaves was alleviated by Spd pretreatment”
Claim · model-written summary
Spermidine pretreatment alleviated water-stress decreases in PSII proteins D1, D2 and LHCII and in psbA, psbD and cab transcripts in wheat.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Spd pretreatmente2
- Gene
- psbA, psbD and cabe2
- Outcome
- PSII major proteins D1, D2 and LHCIIe2
- Direction
- alleviatede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in water‐stressed wheat seedlings”
e2“decreases in the PSII major proteins D1, D2 and LHCII and the transcripts of corresponding genes psbA, psbD and cab were also alleviated by Spd pretreatment under water stress”
Claim · model-written summary
Exogenous spermidine allows wheat PSII to retain a higher activity level during water stress (author interpretation).
- Taxon
- wheatTriticum aestivume0
- Treatment
- application of exogenous Spde3
- Outcome
- activity levele3
- Direction
- highere3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in water‐stressed wheat seedlings”
e3“the application of exogenous Spd protects PSII against water stress at both the transcriptional level and the translational level, and allows PSII to retain a higher activity level during water stress”
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See all 8 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.