Department of Botany and Plant Pathology, Purdue University, Lafayette, Indiana 47907.
Plant Physiol. 1970 Feb;45(2):188-91. doi: 10.1104/pp.45.2.188.
Incubation of soybean hypocotyl sections with 0.1 millimolar 2,2'-dipyridyl in the absence of auxin results in increases in growth rate and in cell wall extensibility lasting for about 3 hours. This is accompanied by greatly decreased biosynthesis of hydroxyproline, which ultimately appears in the wall, and in slightly reduced oxygen uptake, both of which continue for at least 9 hours. Continuous synthesis of hydroxyproline which appears in the cell wall is thus not necessary for short term growth. The decrease in growth and cell wall extensibility that occurs between the 3rd and 9th hours of dipyridyl inhibition cannot be attributed to cross-linking of newly synthesized hydroxyproline, since its synthesis is still inhibited.
在不存在生长素的情况下，将大豆下胚轴切片用 0.1 毫摩尔 2,2'-联吡啶孵育会导致生长速度和细胞壁延展性增加，持续约 3 小时。这伴随着羟脯氨酸生物合成的大大减少，最终出现在细胞壁中，以及氧摄取量略有减少，这两者都至少持续 9 小时。因此，对于短期生长而言，不需要持续合成出现在细胞壁中的羟脯氨酸。在联吡啶抑制的第 3 到 9 小时之间发生的生长和细胞壁延展性的下降不能归因于新合成的羟脯氨酸的交联，因为其合成仍然受到抑制。
