Details of Factor

General Information of Factor (ID: FP064)
  Factor Name Vernalization Treatment
  Factor Type Environmental Conditions
  Factor Description
Vernalization requires a period of exposure to a low temperature before the plant apical meristem will transition from vegetative to reproductive development. Vernalization mainly alters the length of the vegetative phase, and hence FI, which indirectly affects the duration of subsequent preheating phases. Knowledge of the vernalization requirements for different crop varieties is crucial to maximizing their yield.
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 The Content Variation of Natural Product Induced by This Factor
      Species Name: Thlaspi arvense
          Species Info Click to show the detail information of this Factor
          Experiment Detail
The CR1 inbred line of Thlaspi arvense L. was used in most experiments. Plants were grown at 21 ℃ for 6 weeks before a 4-week vernalization treatment (6 ℃). In each experiment, control plants (grown at constant 21 ℃) were about the same chronological age (approximately 11 weeks) as vernalized plants.
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          Factor Function
The endogenous levels in shoot tips declined 10-fold by 2 d after the plants were returned to 21 ℃; this decline continued such that there was nearly 50-fold less kaurenoic acid by 10 d after the end of vernalization. No effect of vernalization on the endogenous levels of kaurenoic acid in leaves was observed.
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            (-)-Kaurene [1]
               Factor Link Part Location NP Content
 
Shoot tips: 0 days of vernalization
    NP Info    Shoot tips NA
NP Content: 3 ng/g dry weight
 
Shoot tips: 2 days of vernalization
    NP Info    Shoot tips NA
NP Content: 0 ng/g dry weight
 
Shoot tips: 4 days of vernalization
    NP Info    Shoot tips NA
NP Content: 2 ng/g dry weight
 
Shoot tips: 7 days of vernalization
    NP Info    Shoot tips NA
NP Content: 0 ng/g dry weight
 
Shoot tips: 10 days of vernalization
    NP Info    Shoot tips NA
NP Content: 3 ng/g dry weight
 
Noninduced shoot tips
    NP Info    Shoot tips NA
NP Content: 44 ng/g dry weight
 
Leaves: 0 days of vernalization
    NP Info    Leaves NA
NP Content: 3 ng/g dry weight
 
Leaves: 2 days of vernalization
    NP Info    Leaves NA
NP Content: 6 ng/g dry weight
 
Leaves: 4 days of vernalization
    NP Info    Leaves NA
NP Content: 6 ng/g dry weight
 
Leaves: 7 days of vernalization
    NP Info    Leaves NA
NP Content: 5 ng/g dry weight
 
Leaves: 10 days of vernalization
    NP Info    Leaves NA
NP Content: 4 ng/g dry weight
 
Noninduced leaves
    NP Info    Leaves NA
NP Content: 3 ng/g dry weight
            Kaurenoic Acid [1]
               Factor Link Part Location NP Content
 
Shoot tips: 0 days of vernalization
    NP Info    Shoot tips NA
NP Content: 4628 ng/g dry weight
 
Shoot tips: 2 days of vernalization
    NP Info    Shoot tips NA
NP Content: 436 ng/g dry weight
 
Shoot tips: 4 days of vernalization
    NP Info    Shoot tips NA
NP Content: 205 ng/g dry weight
 
Shoot tips: 7 days of vernalization
    NP Info    Shoot tips NA
NP Content: 183 ng/g dry weight
 
Shoot tips: 10 days of vernalization
    NP Info    Shoot tips NA
NP Content: 65 ng/g dry weight
 
Noninduced shoot tips
    NP Info    Shoot tips NA
NP Content: 3474 ng/g dry weight
 
Leaves: 0 days of vernalization
    NP Info    Leaves NA
NP Content: 146 ng/g dry weight
 
Leaves: 2 days of vernalization
    NP Info    Leaves NA
NP Content: 132 ng/g dry weight
 
Leaves: 4 days of vernalization
    NP Info    Leaves NA
NP Content: 154 ng/g dry weight
 
Leaves: 7 days of vernalization
    NP Info    Leaves NA
NP Content: 162 ng/g dry weight
 
Leaves: 10 days of vernalization
    NP Info    Leaves NA
NP Content: 211 ng/g dry weight
 
Noninduced leaves
    NP Info    Leaves NA
NP Content: 134 ng/g dry weight

References
1 Thermoinductive Regulation of Gibberellin Metabolism in Thlaspi arvense L. (II. Cold Induction of Enzymes in Gibberellin Biosynthesis)