Abstract
The effect and mechanism of preharvest and postharvest ultraviolet (UV) irradiation on anthocyanin biosynthesis during blueberry development were investigated. The results showed that preharvest UV-B,C and postharvest UV-A,B,C irradiation significantly promoted anthocyanin biosynthesis and the transcripts of late biosynthetic genes (LBG) VcDFR, VcANS, VcUFGT, and VcMYB transcription factor as well as DFR and UFGT activities in anthocyanin pathway in a UV wavelength- and developmental stage-dependent manner. VcMYB expression was positively correlated with that of VcANS and VcUFGT and coincided with anthocyanin biosynthesis responding to the UV radiation. Sugar decreased during postharvest but increased during preharvest UV radiation in mature fruit. Our results indicate that UV-responsive production of anthocyanins is mainly caused by the activation of anthocyanin downstream pathway genes, which could be upregulated by VcMYB. Furthermore, different potential response mechanisms may exist between preharvest and postharvest UV radiation in blueberries, involving a systemic response in living plants and a nonsystemic response in postharvest fruit.
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Claims 10
Claim · model-written summary
Preharvest UV-B,C significantly promoted anthocyanin biosynthesis.
Not reportedComparator
Verbatim
e0“preharvest UV-B,C and postharvest UV-A,B,C irradiation significantly promoted anthocyanin biosynthesis”
t0“Blueberries (Vaccinium corymbosum L.)”
Claim · model-written summary
Postharvest UV-A,B,C significantly promoted anthocyanin biosynthesis.
- Taxon
- Blueberriest0
- Treatment
- postharvest UV-A,B,C irradiatione0
- Outcome
- anthocyanin biosynthesise0
- Direction
- promotede0
Not reportedComparator
Verbatim
e0“postharvest UV-A,B,C irradiation significantly promoted anthocyanin biosynthesis”
t0“Blueberries (Vaccinium corymbosum L.)”
Claim · model-written summary
Preharvest UV-B,C promoted transcripts of VcDFR, VcANS and VcUFGT and VcMYB.
- Taxon
- Blueberriest0
- Treatment
- preharvest UV-B,Ce0
- Outcome
- transcripts of late biosynthetic genes (LBG) VcDFR, VcANS, VcUFGT, and VcMYB transcription factore0
- Direction
- promotede0
Not reportedComparator
Verbatim
e0“preharvest UV-B,C and postharvest UV-A,B,C irradiation significantly promoted anthocyanin biosynthesis and the transcripts of late biosynthetic genes (LBG) VcDFR, VcANS, VcUFGT, and VcMYB transcription factor”
t0“Blueberries (Vaccinium corymbosum L.)”
Claim · model-written summary
Postharvest UV-A,B,C promoted transcripts of VcDFR, VcANS and VcUFGT and VcMYB.
- Taxon
- Blueberriest0
- Treatment
- postharvest UV-A,B,C irradiatione0
- Outcome
- transcripts of late biosynthetic genes (LBG) VcDFR, VcANS, VcUFGT, and VcMYB transcription factore0
- Direction
- promotede0
Not reportedComparator
Verbatim
e0“postharvest UV-A,B,C irradiation significantly promoted anthocyanin biosynthesis and the transcripts of late biosynthetic genes (LBG) VcDFR, VcANS, VcUFGT, and VcMYB transcription factor”
t0“Blueberries (Vaccinium corymbosum L.)”
Claim · model-written summary
UV irradiation promoted DFR and UFGT activity, dependent on wavelength and developmental stage.
- Taxon
- Blueberriest0
- Treatment
- irradiatione0
- Outcome
- DFR and UFGT activitiese0
- Direction
- promotede0
- Qualifier
- in a UV wavelength- and developmental stage-dependent mannere0
Not reportedComparator
Verbatim
e0“irradiation significantly promoted anthocyanin biosynthesis and the transcripts of late biosynthetic genes (LBG) VcDFR, VcANS, VcUFGT, and VcMYB transcription factor as well as DFR and UFGT activities in anthocyanin pathway in a UV wavelength- and developmental stage-dependent manner”
t0“Blueberries (Vaccinium corymbosum L.)”
Claim · model-written summary
VcMYB expression correlated positively with VcANS and VcUFGT expression and coincided with anthocyanin biosynthesis under UV radiation.
Verbatim
e0“VcMYB expression was positively correlated with that of VcANS and VcUFGT and coincided with anthocyanin biosynthesis responding to the UV radiation”
t0“Blueberries (Vaccinium corymbosum L.)”
Claim · model-written summary
Sugar decreased during postharvest UV radiation in mature fruit.
- Taxon
- Blueberriest0
- Organ / stage
- mature fruite0
- Treatment
- postharvest UV radiatione1
- Outcome
- Sugare0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“Sugar decreased during postharvest but increased during preharvest UV radiation in mature fruit”
e1“different potential response mechanisms may exist between preharvest and postharvest UV radiation in blueberries, involving a systemic response in living plants and a nonsystemic response in postharvest fruit”
t0“Blueberries (Vaccinium corymbosum L.)”
Claim · model-written summary
Sugar increased during preharvest UV radiation in mature fruit.
- Taxon
- Blueberriest0
- Organ / stage
- mature fruite0
- Treatment
- preharvest UV radiatione0
- Outcome
- Sugare0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Sugar decreased during postharvest but increased during preharvest UV radiation in mature fruit”
t0“Blueberries (Vaccinium corymbosum L.)”
Claim · model-written summary
The authors attribute UV responsive anthocyanin production mainly to activation of downstream pathway genes, potentially upregulated by VcMYB.
Verbatim
e0“UV-responsive production of anthocyanins is mainly caused by the activation of anthocyanin downstream pathway genes, which could be upregulated by VcMYB”
t0“Blueberries (Vaccinium corymbosum L.)”
Claim · model-written summary
The authors suggest systemic response in living plants and nonsystemic response in postharvest fruit.
Verbatim
e0“different potential response mechanisms may exist between preharvest and postharvest UV radiation in blueberries, involving a systemic response in living plants and a nonsystemic response in postharvest fruit”
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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.