ABSTRACT

Thermal stress (TS) can be detrimental to tomato crop at different growth stages and is accounted by the generation of highly fatal reactive oxygen species (ROS). In this study, the effects of Trichoderma koningii ITCC 5201 (TK) were investigated on the tolerance of tomato (Solanum lycopersicum L.) plants under TS. TS elevated SOD, POD, PPO PAL, and Proline activity in the present study. However, a further reduction was observed in these enzymatic activities by the application of TK in the stressed and treated seedlings, while an increase in the starch, protein, and total phenol content was observed in stressed and treated plants. TS affirms the increase in H₂O₂ generation and lignin deposition, but reduction in the accumulation was observed by the treatment of TK to tomato seeds. In conclusion, TK proved to be very beneficial in imparting resistance to the tomato plants against heat stress through improved modulation of antioxidants.

摘要

热应激（TS）在不同的生长阶段可能对番茄作物有害，并且是由高致命活性氧（ROS）产生引起的。在这项研究中，研究了康宁木霉ITCC 5201 （TK）对番茄（TS）对番茄（Solanum lycopersicum L.）植物耐受性的影响。在本研究中，TS升高了SOD，POD，PPO PAL和脯氨酸的活性。但是，通过在受压和处理过的幼苗中施用TK，可以观察到这些酶活性的进一步降低，而在受压和处理过的植物中，淀粉，蛋白质和总酚的含量却有所增加。TS确认H ₂ O ₂的增加产生和木质素沉积，但是通过TK处理番茄种子观察到积累的减少。总之，事实证明，传统知识在通过改善抗氧化剂的调制来赋予番茄植物抗热胁迫的能力方面非常有益。