Effect of mineral nutrition on the metabolisms of phenolic compounds in plants.

1)以花青素含量高的黄沟（YD）和花青素含量低的金横花（GC）两种玉米品种（Zea mass L.）为试验材料，研究了氮、磷、锰缺乏对花青素及其他酚类化合物形成的影响。缺氮处理显著提高了黄叶和黄叶中总烯醇和黄烷醇含量。对于YD，缺磷导致叶片花青素积累剧烈，缺氮导致叶片花青素积累轻微。另一方面，GC中的花青素含量几乎没有变化。同时缺磷、缺锰时，YD花青素含量几乎没有增加。在YD和DC中，缺磷导致的leucantliocyallin含量的增加都大于缺氮。缺磷或缺氮使黄杨和黄杨叶片中酚酸含量升高。2)以红莴苣（Lacutuca sativa L.）和红甘蓝（Bracssica oleracea L.）幼苗为试验材料，研究了锰缺乏对多烯醇代谢的影响。在缺锰培养液中培养幼苗后，测定苯丙氨酸解氨酶（PAL）活性、总酚、花青素和叶绿素含量。锰缺乏导致红莴苣和红甘蓝叶片PAL活性、总酚和花青素含量降低，其中花青素的降低更为显著。红甘蓝上部叶片花青素含量的变化与叶绿素含量无关。提示锰在苯酚代谢，特别是抗花色苷形成中具有直接作用。3)测定了不同Mn浓度营养液中芸豆叶片中酚酸的含量。轻度过量Mn可提高PAL活性和酚酸含量，而重度过量Mn可降低酚酸含量，尤其是咖啡酸含量。4)采用分子筛色谱法研究了硅和钙与水稻叶鞘细胞壁的结合。硅和钙似乎与细胞壁中的木质素碳水化合物复合物结合。少

1) Effects of N, P and Mn deficiencies on the formation of anthocyanin and other phenolic compounds were investigated with seedlings of two cultivars of corn (Zea mass L.), Yellow dent (YD), rich in, and Golden crossbantam (GC), poor in anthocyanin. Nitrogen deficiency increased the contents of total plienol and flavanol in the leaves of both YD and GC more remarkably than P deficiency. For YD, P deficiency caused a drastic accumulation of anthocyanin in the leaves, while the accumulation by N deficiency was slight. On the other hand, anthocyanin in GC was scarcely changed by the deficiencies. Anthocyanin content in YD was scarcely increased when P and Mn was simultaneously deficient. The increase in leucoantliocyallin content caused by P deficiency was greater than that by N deficiency both in YD and DC. Phenolic acids contents in the leaves of both YD and GC were increased by P or N deficiency.2) Effects of Mn deficiency on plieyiol metabolism were investigated with seedlings of red … More lettuce (Lacutuca sativa L.) and red cabbage (Bracssica oleracea L.). After the seedlings were water-cultured with Mn deficient culture solutions, phenylalanine ammonia-lyase (PAL) activity, total phenol, anthocyanin, and chlorophyll contents were determined. Manganese deficiency caused decreases of PAL activity, total phenol and anthocyanin contents in the leaves of both red lettuce and red cabbage, among which the decrease of anthocyanin was more remarkable. The anthocyanin content changed unrelated with the chlorophyll content in the upper leaves of red cabbage. It is suggested that Mn has a direct function in phenol metabolism, especially in antliocyanin formation.3) Phenolic acids were determined in the leaves of kidney bean (Pliaseolus vulgaris L.) grown in nutrient solutions containing different concentrations of Mn. PAL activity and phenolic-acids contents were increased by the slight excess of Mn, while phenolic acids, especially caffeic acid were decreased by the severe excess.4) Silicon and Ca combined with cell wall of the leaf sheath of rice plants were investigated by molecular sieve chromatography. Silicon as well as Ca appeared to be combined with lignincarbohydrate complexes in the cell wall. Less