Table 1.

Quantitation of GAs in Different Mutants and Wild-Type Plants

GAga1-3rga-2/ga1-3spy-9/ga1-3Lerrga-2/GA1spy-9/GA1
GA53UndetectableUndetectableUndetectable4.23.96.5
GA44TraceTraceTrace1.60.72.7
GA191.63.226.910.48.4
GA200.10.20.10.30.40.3
GA10.1Trace0.10.40.40.5
GA290.10.10.10.30.30.3
GA82.40.4TraceTrace1.9Trace
GA12Trace0.90.544.442.056.2
GA150.70.60.67.28.310.4
GA24TraceTraceTrace40.641.346.0
GA9TraceTraceTrace2.32.51.7
GA4UndetectableUndetectableUndetectable22.518.615.3
GA340.40.30.46.45.54.3
  • a Values are in ng of GA/g dry weight. Trace indicates <0.1 ng of GA/g dry weight. Undetectable indicates that no corresponding peak was detected by GC-SIM. The GAs in the top half of the table are part of the early 13-hydroxylation

  • pathway: GA53→GA44→GA19→GA20→GA1→GA8.

  •  ↓

  •  GA29

  • Those in the bottom half are part of the non-13-hydroxylation pathway: GA12→GA15→GA24→GA9→GA4→GA34. GA1 and GA4 are bioactive GAs, whereas the other GAs are either precursors or deactivated GAs (GA29, GA8, and GA34).