Department of Biological Sciences, Stanford University, Stanford, California 94305.
Plant Physiol. 1975 Sep;56(3):373-6. doi: 10.1104/pp.56.3.373.
Like indoleacetic acid, buffers of acidic pH, which stimulate elongation of pea (Pisum sativum var. Alaska) stem tissue, induce the appearance within the tissue of a watersoluble xyloglucan polymer that probably arises from previously deposited wall material. Neutral pH buffers, which inhibit the elongation response to indoleacetic acid in this tissue, inhibit indoleacetic acid-induced increase in soluble xyloglucan. The findings provide further evidence that release of soluble xyloglucan from the cell walls of pea results from the biochemical action on the cell wall that is responsible for wall extension. The data also indicate that treatment of tissue with either auxin or acidic pH has a similar biochemical effect on the cell wall. This is consistent with the H(+) secretion theory of auxin action.
类似于吲哚乙酸，缓冲液的酸性 pH 值刺激豌豆（Pisum sativum var. Alaska）茎组织的伸长，诱导组织内出现一种水溶性木葡聚糖聚合物，该聚合物可能来自先前沉积的细胞壁材料。中性 pH 值缓冲液抑制该组织对吲哚乙酸伸长反应，抑制吲哚乙酸诱导的可溶性木葡聚糖增加。这些发现进一步证明，豌豆细胞壁中可溶性木葡聚糖的释放是由于对细胞壁的生化作用导致细胞壁延伸。数据还表明，用生长素或酸性 pH 值处理组织对细胞壁有类似的生化作用。这与生长素作用的 H(+)分泌理论一致。
