Department of Environmental Biology, Faculty of Sciences, BIOMA Institute, University of Navarra, 31008 Pamplona, Spain.
Department of Marketing, Timac Agro, Porto Alegre 90480-001, Brazil.
Int J Mol Sci. 2022 Sep 1;23(17):9976. doi: 10.3390/ijms23179976.
Currently, high doses of vinasse are employed for the fertigation of sugarcane with positive results on yield. Usually, this effect is related to the presence of mineral nutrients in its composition as well as to its action on soil properties. Consequently, the concentrations of minerals, organic acids, and other metabolites in vinasse are very well characterized. However, considering that cane vinasses are obtained from the treatment of vegetal tissues, it is also possible that they might contain significant concentrations of phytoregulators that could have a relevant role in their beneficial action on yield. To investigate this hypothesis, we analyzed the main plant hormones in 22 samples of vinasse collected in different production sites of Brazil using HPLC-mass spectrometry. The results show that both ABA and IAA present concentrations in vinasse within the micromolar range, thus being potential active ingredients affecting plant development. In conclusion, the beneficial action of cane vinasses on sugarcane yield might involve, among other factors, the action of IAA and ABA on plant growth.
目前，高剂量的酒糟被用于甘蔗的灌溉，对产量有积极的影响。通常，这种效果与酒糟成分中存在的矿物质营养以及对土壤性质的作用有关。因此，酒糟中矿物质、有机酸和其他代谢物的浓度有很好的特征。然而，考虑到蔗渣酒糟是从植物组织的处理中获得的，它也可能含有大量的植物调节剂，这些调节剂可能在其对产量的有益作用中发挥重要作用。为了验证这一假设，我们使用高效液相色谱-质谱法对巴西不同生产地点采集的 22 个酒糟样本中的主要植物激素进行了分析。结果表明，ABA 和 IAA 在酒糟中的浓度均处于微摩尔范围内，因此可能是影响植物发育的有效成分。总之，酒糟对甘蔗产量的有益作用可能涉及 IAA 和 ABA 对植物生长的作用等因素。
