Paper · 1981 · Plant and Cell Physiology

Effects of Cycloheximide and Light on Leaf Senescence in Maize and Hydrangea

Che-Jun Pjon

8
claims
17
verbatim quotes
25
citations
1
research areas
—
Not open access

Abstract

The senescence of maize and hydrangea leaves after detachment and darkening was studied in terms of the loss of chlorophyll and protein. Chlorophyll contents of the detached leaves decreased in the dark in both plants. Cycloheximide at 0.1 mM effectively inhibited the loss of chlorophyll in maize, but did not do so in hydrangea. Continuous irradiation with white light of 4.6 Wm−2 prevented the loss of chlorophyll in hydrangea leaves, while it caused bleaching of maize leaves. Reducing agents such as ascorbic acid and glutathione did not prevent the bleaching by light. In maize leaves, the amount of protein decreased in the dark more slowly than that of chlorophyll, and cycloheximide slightly prevented the protein decrease. Continuous light irradiation of 4.6 Wm−2 delayed the loss of protein more effectively than cycloheximide did.

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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 8

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

In maize, chlorophyll content of detached leaves decreased in the dark

Taxon
MaizeZea mayst0
Organ / stage
detached leavese1
Treatment
in the darke1
Outcome
Chlorophyll contentse1
Direction
decreasede1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize”

✓ located verbatim in the source · title, characters 57–62 · show in text ↑
e1

“Chlorophyll contents of the detached leaves decreased in the dark in both plants”

✓ located verbatim in the source · abstract, characters 137–217 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

In hydrangea, chlorophyll content of detached leaves decreased in the dark

Taxon
HydrangeaHydrangeat0
Organ / stage
detached leavese1
Treatment
in the darke1
Outcome
Chlorophyll contentse1
Direction
decreasede1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hydrangea
Hydrangea · Taxon · picture of the genus (one of its species)Alvesgaspar · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Hydrangea”

✓ located verbatim in the source · title, characters 67–76 · show in text ↑
e1

“Chlorophyll contents of the detached leaves decreased in the dark in both plants”

✓ located verbatim in the source · abstract, characters 137–217 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cycloheximide at 0.1 mM inhibited chlorophyll loss in maize leaves

Taxon
MaizeZea mayst0
Treatment
Cycloheximide at 0.1 mMe2
Outcome
loss of chlorophylle2
Direction
inhibitede2

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize”

✓ located verbatim in the source · title, characters 57–62 · show in text ↑
e2

“Cycloheximide at 0.1 mM effectively inhibited the loss of chlorophyll in maize, but did not do so in hydrangea”

✓ located verbatim in the source · abstract, characters 219–329 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Cycloheximide at 0.1 mM did not inhibit chlorophyll loss in hydrangea leaves

Taxon
HydrangeaHydrangeat0
Treatment
Cycloheximide at 0.1 mMe2
Outcome
loss of chlorophylle2
Direction
did not do soe2

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hydrangea
Hydrangea · Taxon · picture of the genus (one of its species)Alvesgaspar · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Hydrangea”

✓ located verbatim in the source · title, characters 67–76 · show in text ↑
e2

“Cycloheximide at 0.1 mM effectively inhibited the loss of chlorophyll in maize, but did not do so in hydrangea”

✓ located verbatim in the source · abstract, characters 219–329 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Continuous white light of 4.6 Wm−2 prevented chlorophyll loss in hydrangea leaves

Taxon
HydrangeaHydrangeat0
Treatment
Continuous irradiation with white light of 4.6 Wm−2e3
Outcome
loss of chlorophylle3
Direction
preventede3

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hydrangea
Hydrangea · Taxon · picture of the genus (one of its species)Alvesgaspar · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Hydrangea”

✓ located verbatim in the source · title, characters 67–76 · show in text ↑
e3

“Continuous irradiation with white light of 4.6 Wm−2 prevented the loss of chlorophyll in hydrangea leaves, while it caused bleaching of maize leaves”

✓ located verbatim in the source · abstract, characters 331–479 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Continuous white light of 4.6 Wm−2 caused bleaching of maize leaves

Taxon
MaizeZea mayst0
Treatment
Continuous irradiation with white light of 4.6 Wm−2e3
Outcome
bleachinge4
Direction
causede4

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize”

✓ located verbatim in the source · title, characters 57–62 · show in text ↑
e3

“Continuous irradiation with white light of 4.6 Wm−2 prevented the loss of chlorophyll in hydrangea leaves, while it caused bleaching of maize leaves”

✓ located verbatim in the source · abstract, characters 331–479 · show in text ↑
e4

“while it caused bleaching of maize leaves”

✓ located verbatim in the source · abstract, characters 438–479 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Ascorbic acid and glutathione did not prevent light-induced bleaching of maize leaves

Taxon
MaizeZea mayst0
Treatment
Reducing agents such as ascorbic acid and glutathionee5
Outcome
bleachinge5
Direction
did not prevente5

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize”

✓ located verbatim in the source · title, characters 57–62 · show in text ↑
e5

“Reducing agents such as ascorbic acid and glutathione did not prevent the bleaching by light”

✓ located verbatim in the source · abstract, characters 481–573 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Continuous light of 4.6 Wm−2 delayed protein loss in maize leaves more effectively than cycloheximide

Taxon
MaizeZea mayst0
Treatment
Continuous light irradiation of 4.6 Wm−2e7
Outcome
loss of proteine7
Direction
delayede7
Qualifier
more effectivelye7
Comparator
cycloheximidee7

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize”

✓ located verbatim in the source · title, characters 57–62 · show in text ↑
e7

“Continuous light irradiation of 4.6 Wm−2 delayed the loss of protein more effectively than cycloheximide did”

✓ located verbatim in the source · abstract, characters 733–841 · show in text ↑

ascorbic acid · crop injury · Zea mays (maize)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. positive
See all 2 papers →

radiation · quality: protein · Zea mays (maize)Positive and negative results

6 papers: 4 positive, 2 negative or no effect

3 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. no effect
  3. positive

2 papers more in this group

See all 6 papers →

light · quality: protein · Zea mays (maize)Positive and negative results

11 papers: 4 positive, 7 negative or no effect

3 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

7 papers more in this group

See all 11 papers →

light · physiology: pigments · Zea mays (maize)Positive and negative results

21 papers: 12 positive, 9 negative or no effect

8 papers in the same direction as this paper · 12 in the opposite direction

  1. positive
  2. positive
  3. positive

17 papers more in this group

See all 21 papers →

light · crop injury · Zea mays (maize)Results agree

3 papers: 0 positive, 3 negative or no effect

2 papers in the same direction as this paper

  1. negative
  2. negative
See all 3 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.