Abstract
Basil (Ocimum basilicum L.) is a temperature sensitive plant and suffers from chilling injury (CI), especially during the postharvest storage. We investigated the effect of additional far-red light (FR) during cultivation at two temperatures on postharvest chilling tolerance. Basil was cultivated under red-white Light Emitting Diodes (LED) at 25 °C. During the last 3 weeks before harvest, plants were maintained at a high temperature (25 ºC) or exposed to a low temperature (15 ºC). Furthermore, plants were exposed to additional FR (180 µmol m−2 s−1) for different durations (0, 1 or 3 weeks). After harvest, leaves were stored at 4 and 12 ºC in darkness. Overall visual quality and maximum quantum yield of PS II (Fv/Fm) as indicators of chilling injury were monitored every third day for 15 d. Abscisic acid (ABA) and jasmonic acid (JA), carbohydrates, and antioxidants were measured at harvest and after 9 d of storage at 4 °C. Additional FR improved the chilling tolerance at both cultivation temperatures. Cultivation temperature had no effect on postharvest chilling tolerance. Hormone levels in basil leaves at harvest were not affected by FR. This indicates that ABA and JA are not involved in development of FR-induced chilling tolerance in basil. FR had no effect on the levels of antioxidants at harvest whereas the levels of soluble sugars and starch increased under additional FR. The positive effect of adding FR during cultivation on chilling tolerance in basil may be due to the increase in soluble sugars and starch.
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Claims 6
Claim · model-written summary
Additional far-red light improved basil chilling tolerance at both cultivation temperatures.
- Taxon
- Basil
Ocimum basilicumt0 - Treatment
- Additional FRe0
- Outcome
- chilling tolerancee0
- Direction
- improvede0
- Qualifier
- both cultivation temperaturese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Additional FR improved the chilling tolerance at both cultivation temperatures.”
t0“basil”
Claim · model-written summary
Cultivation temperature had no effect on postharvest chilling tolerance.
- Taxon
- BasilOcimum basilicumt0
- Treatment
- Cultivation temperaturee0
- Outcome
- postharvest chilling tolerancee0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivation temperature had no effect on postharvest chilling tolerance.”
t0“basil”
Claim · model-written summary
Far-red light did not affect hormone levels in basil leaves at harvest.
- Taxon
- basilOcimum basilicume0
- Organ / stage
- leavese0
- Treatment
- FRe0
- Outcome
- Hormone levelse0
- Direction
- not affectede0
- Qualifier
- at harveste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hormone levels in basil leaves at harvest were not affected by FR.”
Claim · model-written summary
Far-red light did not affect antioxidant levels at harvest.
- Taxon
- BasilOcimum basilicumt0
- Treatment
- FRe0
- Outcome
- levels of antioxidantse0
- Direction
- no effecte0
- Qualifier
- at harveste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FR had no effect on the levels of antioxidants at harvest”
t0“basil”
Claim · model-written summary
Additional far-red light increased soluble sugar and starch levels.
- Taxon
- BasilOcimum basilicumt0
- Treatment
- additional FRe0
- Outcome
- levels of soluble sugars and starche0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the levels of soluble sugars and starch increased under additional FR.”
t0“basil”
Claim · model-written summary
The authors suggest increased soluble sugars and starch may explain the greater chilling tolerance under far-red light.
- Taxon
- basilOcimum basilicume0
- Treatment
- adding FR during cultivatione0
- Outcome
- chilling tolerancee0
- Qualifier
- increase in soluble sugars and starche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The positive effect of adding FR during cultivation on chilling tolerance in basil may be due to the increase in soluble sugars and starch.”
The same questions in other papers
light · molecular: metabolites · Ocimum basilicum (basil)Positive and negative results
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- positive
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See all 25 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.