Department of Chemistry and Biochemical Sciences, Oregon Graduate Center, Beaverton, Oregon 97005.
Plant Physiol. 1978 Dec;62(6):841-5. doi: 10.1104/pp.62.6.841.
Indole-3-acetic acid (IAA) content in shoot tips of Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) trees and seedlings was determined by combined gas chromatography-mass spectrometry using a deuterated analog (d(2)-IAA) as an internal standard and the technique of selected ion monitoring. Ratios of the peak heights of the deuterated analog internal standard to endogenous IAA revealed a slightly higher content of IAA in seedlings compared with the shoot tips collected in June. The relatively high level of IAA (2.9 micrograms per gram fresh weight) in seedlings is discussed in relation to in vitro propagation of this species.
采用氘代类似物(d(2)-IAA)作为内标,通过选择离子监测技术,结合气相色谱-质谱法测定了花旗松(Pseudotsuga menziesii [Mirb.] Franco)树木和幼苗茎尖中的吲哚-3-乙酸(IAA)含量。氘代内标峰高与内源性 IAA 峰高的比值表明,与 6 月采集的茎尖相比,幼苗中的 IAA 含量略高。幼苗中相对较高水平的 IAA(每克鲜重 2.9 微克)与该物种的体外繁殖有关。