Nanocomposite packaging delays lignification of Flammulina velutipes by regulating phenylpropanoid pathway and mitochondrial reactive oxygen species metabolisms
Changzhou Zuo, Qiuhui Hu, Anxiang Su, Hui Xu, Xiuting Li, Alfred Mugambi Mariga and Wenjian Yang
Postharvest Biology and Technology, Volume 171, January 2021, 111360
2021
บทคัดย่อ
Lignification is an important inducement of quality deterioration of postharvest Flammulina velutipes. In this study, phenylpropanoid pathway and mitochondrial reactive oxygen species (ROS) metabolisms were taken as breakthrough points to investigate the lignification mechanism in harvested F. velutipes packaged in nanocomposite packaging material (Nano-PM). In comparison with polyethylene packaging material (Normal-PM) and no packaging material (No-PM), Nano-PM prevented the decrease of L* value and the increase of firmness. Nano-PM also maintained a better microstructure. Furthermore, Nano-PM reduced the deposition of lignin by suppressing the enzymes activities involved in phenylpropanoid pathway. In addition, the regulation of ROS in mitochondria alleviated the accumulation of Ca2+ and inhibited the programmed cell death (PCD) process, which ultimately delayed the lignification process. These results indicated that Nano-PM delayed the lignification process by regulating phenylpropanoid pathway and the accumulation of ROS in mitochondria.