Troise Antonio Dario, De Pascale Sabrina, Piluzza Giovanna, Re Giovanni Antonio, Sanna Federico, Scaloni Andrea, Sulas Leonardo
Institute for the Animal Production System in Mediterranean Environment, National Research Council, Naples, Italy.
Institute for the Animal Production System in Mediterranean Environment, National Research Council, Sassari, Italy.
J Sci Food Agric. 2025 Jan 30;105(2):1069-1079. doi: 10.1002/jsfa.13897. Epub 2024 Sep 19.
Climate change results in an increased occurrence of drought periods, which affect the performance of Mediterranean legumes such as sulla. To evaluate the effects of drought stress on the antioxidant capacity and the accumulation of phytochemicals in sulla shoots, rainfed and drought-stressed plants (RAI) and watered plants with timely vegetative regeneration (STI) were cultivated in parallel in a field experiment and sampled at four different times.
Drought stress strongly and positively affected the antioxidant capacity and the accumulation of polyphenols in sulla shoots, with key differences at wintertime. These findings were supported through untargeted and targeted metabolomics of RAI and STI samples, which detailed the accumulation of about 300 secondary metabolites in RAI, mostly polyphenols and saponins.
This study provided new insights into the changes in secondary metabolites in sulla due to drought stress, which can be used to produce forages or raw plant extracts with enhanced biological effects. © 2024 Society of Chemical Industry.
气候变化导致干旱期增多，这影响了地中海豆科植物如 sulla 的生长表现。为评估干旱胁迫对 sulla 嫩枝抗氧化能力和植物化学物质积累的影响，在田间试验中同时种植了雨养和干旱胁迫植株（RAI）以及及时进行营养再生的浇水植株（STI），并在四个不同时间进行采样。
干旱胁迫对 sulla 嫩枝的抗氧化能力和多酚积累有强烈的正向影响，在冬季存在关键差异。通过对 RAI 和 STI 样本进行非靶向和靶向代谢组学分析，支持了这些发现，该分析详细阐述了 RAI 中约 300 种次生代谢产物的积累情况，其中大多为多酚和皂苷。
本研究为干旱胁迫导致的 sulla 次生代谢产物变化提供了新见解，这些见解可用于生产具有增强生物效应的草料或植物原料提取物。© 2024 化学工业协会。
