Interactions between JA and ABA in fruit and synthesis of JA derivatives shich is effective in field

研究了几种水果中茉莉酸（JA）和脱落酸（阿坝）的相互作用，建立了一种测定天然黄原胶（XAN）含量的内标物。果肉中阿坝的相对含量随着果实成熟而增加。在摩尔基础上，未成熟果实中的总XAN（顺式，反式XAN和反式，反式XAN）的量等于阿坝的量。但在果实成熟过程中，总XAN水平随阿坝水平的增加而显著下降。在跃变上升期和跃变后期阿坝含量高于XAN总量。成熟苹果中XAN的低水平可能是由于其快速周转造成的。种子中的总XAN浓度在未成熟种子中较高，但随着种子成熟而下降。而阿坝浓度的变化则相反。因此，总XAN的减少与阿坝水平的增加相关，在果肉和种子中都观察到这种趋势 ...更多信息 这与XAN作为阿坝前体的作用是一致的。在纸浆中，PA浓度变化的方式类似的阿坝。epi-DPA最大浓度为阿坝最大浓度的67%，而DPA最大浓度仅为阿坝最大浓度的11%。因此，epi-DPA被认为是纸浆中PA的主要代谢产物。开发了在该领域有效的茉莉酸衍生物。在田间条件下，几种茉莉酸衍生物的施用增加了苹果花青苷的积累，并对芒果果皮、果肉和种子中茉莉酸甲酯（MeJA）的含量进行了测定。果皮中JA浓度高于果肉中JA浓度。1-氨基环丙烷-1-羧酸（ACC）的浓度在皮肤和纸浆增加收获。与JA不同，ACC在牙髓中的浓度高于皮肤。这一事实表明，虽然JA和ACC与芒果的成熟有关，但它们可能扮演不同的角色。两个品种的种子中JA浓度在收获时均呈下降趋势。这一结果可能表明芒果种子缺乏休眠。并对贮藏过程中茉莉酸酯的变化进行了研究。贮藏果实中果皮和果肉中JA含量增加。此外，在果实失重较多的情况下，JA的增加幅度较大。据推测，与果实衰老相关的JA是由水分损失引起的。少

The interactions between JA and ABA were investigated in some fruits.A suitable internal standard for the measurement of natural xanthoxin (XAN) was developed. The relative amounts of ABA in the pulp increased toward apple fruit maturation. On a molar basis, the amount of total XAN (cis,trans-XAN and trans,trans-XAN) in immature fruit was equal to the amount of ABA. However during the fruit ripening process, the total XAN levels markedly decreased in proportion with increases in the levels of ABA. At the climacteric rise and post climacteric stage ABA concentrations were higher than the total amount of XAN. The low levels of XAN in a ripening apple may be caused by to its rapid turnover. The total XAN concentration in the seeds was high in immature seeds but decreased toward seed maturation. The opposite tendency was observed in the case of ABA concentration. Thus, decreases of total XAN correlated with increases in the ABA levels ; this tendency was observed in both the pulp and seeds … More , and was consistent with the role of XAN as an ABA precursor. In the pulp, PA concentrations changed in a manner similar to those of ABA. The maximum epi-DPA concentration was 67% of the maximum ABA concentration, but the maximum DPA concentration was only 11% of the maximum ABA concentration. Therefore, epi-DPA was thought to be a major metabolite of PA in the pulp. The derivatives of Jasmonic acid (JA) which are effective in the field were developed. The applications of some kinds of JA derivatives increased anthocyanin accumulation of apples in the field.JA and methyl jasmonate (MeJA) were quantified in the skin, pulp, and seeds of mangoes (Mangifera indica L.). JA concentrations in the skin were higher than those in the pulp. 1-aminocyclopropane-1 -carboxylic acid (ACC) concentrations in the skin and pulp increased toward harvest. Differing with JA,ACC concentrations in the pulp were high compared with the skin. This fact suggests that although JA and ACC are associated with the ripening of mangoes, they may play different roles. JA concentrations in the seeds, of both cultivars decreased toward harvest. It is possible that the result indicates a lack of dormancy in mango seeds. Changes of jasmonates during storage were also examined. JA levels in the skin and pulp increased in stored fruit. In addition, the degree of JA increase was large in fruit which lost much weight. It is assumed that JA associated with fruit senescence was caused by moisture loss. Less