Abstract
WN6 (a stay-green wheat cultivar) and JM20 (control) were used to evaluate the effects of exogenous cytokinin on photosynthetic capacity and antioxidant enzymes activities in flag leaves. Results showed that WN6 reached the higher grain mass, which was mainly due to the higher photosynthetic rate resulting from the higher maximal quantum yield of PSII photochemistry (ΦPSII) and probability that a trapped exaction transfers an electron into the electron transport chain beyond QA (Ψo), and lower relative variable fluorescence intensity at the J-step (Vj). Exogenous 6-benzylaminopurine (6-BA) enhanced antioxidant enzymes activities and decreased malondialdehyde (MDA) content. Enhanced Ψo and electron transport rate (ETR), and decreased Vj contributed to improved photosynthetic rate in the 6-BA treatment. In addition, exogenous 6-BA significantly increased endogenous zeatin (Zt) content, which was significantly and positively correlated with the antioxidant enzyme activity and ΦPSII, implying that higher Zt content was responsible for the improved antioxidant status and photosynthetic performance.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
WN6 had higher grain mass than JM20.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“WN6 reached the higher grain mass”
t0“Response of photosystem II performance and antioxidant enzyme activities in stay-green wheat to cytokinin”
e1“WN6 (a stay-green wheat cultivar) and JM20 (control)”
Claim · model-written summary
WN6 had higher photosynthetic rate than JM20.
- Taxon
- wheat
Triticum aestivumt0 - Material
- WN6e1
- Outcome
- photosynthetic ratee0
- Direction
- highere0
- Comparator
- JM20e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher photosynthetic rate”
t0“Response of photosystem II performance and antioxidant enzyme activities in stay-green wheat to cytokinin”
e1“WN6 (a stay-green wheat cultivar) and JM20 (control)”
Claim · model-written summary
WN6 had higher ΦPSII and Ψo and lower Vj, associated with its higher photosynthetic rate.
- Taxon
- wheatTriticum aestivumt0
- Material
- WN6e1
- Outcome
- maximal quantum yield of PSII photochemistry (ΦPSII)e0
- Direction
- highere0
- Qualifier
- lower relative variable fluorescence intensity at the J-step (Vj)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher maximal quantum yield of PSII photochemistry (ΦPSII) and probability that a trapped exaction transfers an electron into the electron transport chain beyond QA (Ψo), and lower relative variable fluorescence intensity at the J-step (Vj)”
t0“Response of photosystem II performance and antioxidant enzyme activities in stay-green wheat to cytokinin”
e1“WN6 (a stay-green wheat cultivar) and JM20 (control)”
Claim · model-written summary
6-BA enhanced antioxidant enzyme activities.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Exogenous 6-benzylaminopurine (6-BA)e0
- Outcome
- antioxidant enzymes activitiese0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous 6-benzylaminopurine (6-BA) enhanced antioxidant enzymes activities”
t0“Response of photosystem II performance and antioxidant enzyme activities in stay-green wheat to cytokinin”
Claim · model-written summary
6-BA decreased malondialdehyde content.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- cytokinint0
- Outcome
- malondialdehyde (MDA) contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased malondialdehyde (MDA) content”
t0“Response of photosystem II performance and antioxidant enzyme activities in stay-green wheat to cytokinin”
Claim · model-written summary
6-BA increased Ψo and electron transport rate and decreased Vj.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- cytokinint0
- Outcome
- Ψo and electron transport rate (ETR)e0
- Direction
- Enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enhanced Ψo and electron transport rate (ETR), and decreased Vj”
t0“Response of photosystem II performance and antioxidant enzyme activities in stay-green wheat to cytokinin”
Claim · model-written summary
6-BA improved photosynthetic rate.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- 6-BA treatmente0
- Outcome
- photosynthetic ratee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improved photosynthetic rate in the 6-BA treatment”
t0“Response of photosystem II performance and antioxidant enzyme activities in stay-green wheat to cytokinin”
Claim · model-written summary
6-BA significantly increased endogenous zeatin content.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- exogenous 6-BAe0
- Outcome
- endogenous zeatin (Zt) contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous 6-BA significantly increased endogenous zeatin (Zt) content”
t0“Response of photosystem II performance and antioxidant enzyme activities in stay-green wheat to cytokinin”
Claim · model-written summary
Endogenous zeatin content correlated positively with antioxidant activity and ΦPSII.
- Taxon
- wheatTriticum aestivumt0
- Compound
- zeatin (Zt)e0
- Outcome
- antioxidant enzyme activity and ΦPSIIe0
- Direction
- positivelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“endogenous zeatin (Zt) content, which was significantly and positively correlated with the antioxidant enzyme activity and ΦPSII”
t0“Response of photosystem II performance and antioxidant enzyme activities in stay-green wheat to cytokinin”
The same questions in other papers
N-benzyladenine · physiology: photosynthesis · Triticum aestivum (wheat)Results differ
7 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
5 papers more in this group
See all 9 papers →N-benzyladenine · molecular: metabolites · Triticum aestivum (wheat)Positive and negative results
11 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
9 papers more in this group
See all 13 papers →N-benzyladenine · physiology: antioxidant enzymes · Triticum aestivum (wheat)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →class · physiology: oxidative · Triticum aestivum (wheat)Results agree
10 papers in the same direction as this paper
- positive
- positive
- positive
7 papers more in this group
See all 11 papers →class · physiology: photosynthesis · Triticum aestivum (wheat)Results agree
17 papers in the same direction as this paper
- positive
- positive
- positive
14 papers more in this group
See all 18 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.