Abstract
Early season development of cotton is often impaired by sudden episodes of chilling temperature. We determined the chilling response specific to postemergent 13-day-old cotton (Gossypium hirsutum L. cv. Coker 100A-glandless) seedlings. Seedlings were gradually chilled during the dark period and rewarmed during the night-to-day transition. For some chilled plants, the soil temperature was maintained at control level. Plant growth, water relations and net photosynthesis (P(n)) were analyzed after one or three chilling cycles and after 3 days of recovery. Three chilling cycles led to lower relative growth rate (RGR) compared with controls during the recovery period, especially for plants with chilled shoots and roots. Treatment differences in RGR were associated with net assimilation rate rather than specific leaf area. Both chilling treatments led to loss of leaf turgor during the night-to-day transition; this effect was greater for plants with chilled compared with warm roots. Chilling-induced water stress was associated with accumulation of the osmolyte glycine betaine to the same extent for both chilling treatments. Inhibition of P(n) during chilling was related to both stomatal and non-stomatal effects. P(n) fully recovered after seedlings were returned to control conditions for 3 days. We conclude that leaf expansion during the night-to-day transition was a significant factor determining the magnitude of the chilling response of postemergent cotton seedlings.
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Claims 8
Claim · model-written summary
Three chilling cycles lowered the relative growth rate of cotton seedlings compared with controls during recovery, especially for plants with chilled shoots and roots.
- Taxon
- cotton
Gossypium hirsutume0 - Material
- Coker 100A-glandlesse0
- Organ / stage
- shoots and rootse1
- Treatment
- Three chilling cyclese1
- Outcome
- relative growth rate (RGR)e1
- Direction
- lowere1
- Comparator
- controlse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We determined the chilling response specific to postemergent 13-day-old cotton (Gossypium hirsutum L. cv. Coker 100A-glandless) seedlings”
e1“Three chilling cycles led to lower relative growth rate (RGR) compared with controls during the recovery period, especially for plants with chilled shoots and roots”
Claim · model-written summary
Treatment differences in relative growth rate of cotton seedlings were associated with net assimilation rate rather than specific leaf area.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- net assimilation ratee3
- Qualifier
- rather than specific leaf areae3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We determined the chilling response specific to postemergent 13-day-old cotton (Gossypium hirsutum L. cv. Coker 100A-glandless) seedlings”
e3“Treatment differences in RGR were associated with net assimilation rate rather than specific leaf area”
Claim · model-written summary
Both chilling treatments caused loss of leaf turgor in cotton seedlings during the night-to-day transition.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- chilling treatmentse2
- Outcome
- loss of leaf turgore2
- Direction
- decreaseinferrede2
- Qualifier
- during the night-to-day transitione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We determined the chilling response specific to postemergent 13-day-old cotton (Gossypium hirsutum L. cv. Coker 100A-glandless) seedlings”
e2“Both chilling treatments led to loss of leaf turgor during the night-to-day transition; this effect was greater for plants with chilled compared with warm roots”
Claim · model-written summary
Loss of leaf turgor in cotton seedlings was greater with chilled roots than with warm roots.
- Taxon
- cottonGossypium hirsutume0
- Organ / stage
- rootse2
- Treatment
- chillede2
- Outcome
- loss of leaf turgore2
- Direction
- greatere2
- Comparator
- warm rootse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We determined the chilling response specific to postemergent 13-day-old cotton (Gossypium hirsutum L. cv. Coker 100A-glandless) seedlings”
e2“Both chilling treatments led to loss of leaf turgor during the night-to-day transition; this effect was greater for plants with chilled compared with warm roots”
Claim · model-written summary
Chilling-induced water stress was associated with the same accumulation of glycine betaine in cotton seedlings under both chilling treatments.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Chilling-induced water stresse4
- Compound
- glycine betainee4
- Outcome
- accumulation of the osmolyte glycine betainee4
- Direction
- no_changeinferrede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We determined the chilling response specific to postemergent 13-day-old cotton (Gossypium hirsutum L. cv. Coker 100A-glandless) seedlings”
e4“Chilling-induced water stress was associated with accumulation of the osmolyte glycine betaine to the same extent for both chilling treatments”
Claim · model-written summary
Inhibition of net photosynthesis during chilling in cotton seedlings was related to both stomatal and non-stomatal effects.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- Inhibition of P(n) during chillinge5
- Qualifier
- stomatal and non-stomatal effectse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We determined the chilling response specific to postemergent 13-day-old cotton (Gossypium hirsutum L. cv. Coker 100A-glandless) seedlings”
e5“Inhibition of P(n) during chilling was related to both stomatal and non-stomatal effects”
Claim · model-written summary
Net photosynthesis of cotton seedlings fully recovered after return to control conditions for 3 days.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- P(n) fully recoverede6
- Qualifier
- after seedlings were returned to control conditions for 3 dayse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We determined the chilling response specific to postemergent 13-day-old cotton (Gossypium hirsutum L. cv. Coker 100A-glandless) seedlings”
e6“P(n) fully recovered after seedlings were returned to control conditions for 3 days”
Claim · model-written summary
Leaf expansion during the night-to-day transition was a factor determining the magnitude of the chilling response of cotton seedlings.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- magnitude of the chilling responsee7
- Qualifier
- leaf expansion during the night-to-day transitione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We determined the chilling response specific to postemergent 13-day-old cotton (Gossypium hirsutum L. cv. Coker 100A-glandless) seedlings”
e7“leaf expansion during the night-to-day transition was a significant factor determining the magnitude of the chilling response of postemergent cotton seedlings”
The same questions in other papers
cold · growth · Gossypium hirsutum (cotton)Results differ
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- negative
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1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
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.