The dry rot of potato caused by Fusarium sulphureum is the main postharvest disease that causes serious economic loss and leads to mycotoxin contamination. Therefore, it is necessary to find a strategy to increase the plant’s resistance against disease. T-2 toxin at low concentration can act as an elicitor to induce resistance against disease. Calcium ion plays a vital role in induced resistance by responding the environmental stress in plant. In this study, the effect of Ca²⁺ on the development of dry rot, weight loss rate, the suberin polyphenolic (SPP) and suberin polyaliphatic (SPA) accumulation and their participation in phenylpropanoid metabolism were investigated in treated potato. The results showed that lesion diameter and weight loss rate significantly increased after ethylenebis (oxyethylenenitrilo) tetraacetic acid (EGTA) treatment, but the addition of exogenous Ca²⁺ noticeably inhibited the increase. The accumulations of SPP and SPA, enzymatic activities, gene expressions, as well as the contents of total phenols and lignin and their major substrates involved in phenylpropanoid metabolism were decreased after EGTA treatment, these indicators were recovered after the addition of exogenous Ca²⁺. Therefore, the results suggested that Ca²⁺ treatment induced resistance against dry rot, inhibited weight loss rate and accelerated the accumulation of SPP and SPA by activating phenylpropanoid metabolism in treated potato.

由硫镰刀菌引起的马铃薯干腐病是主要的收获后病害，造成严重的经济损失并导致霉菌毒素污染。因此，有必要寻找一种提高植物抗病能力的策略。低浓度的 T-2 毒素可作为诱导物诱导对疾病的抗性。钙离子通过响应植物的环境胁迫而在诱导抗性中起重要作用。在本研究中，Ca ²⁺对干腐病的发展、失重率、木栓质多酚 (SPP) 和木栓质多脂肪 (SPA) 的积累及其在处理后的马铃薯中对苯丙烷代谢的参与进行了研究。结果表明，亚乙基双（氧亚乙基腈）四乙酸（EGTA）处理后病灶直径和失重率显着增加，但外源性Ca ^{2+ 的加入}显着抑制了增加。EGTA处理后SPP和SPA的积累、酶活性、基因表达以及总酚和木质素及其参与苯丙烷代谢的主要底物的含量降低，这些指标在加入外源Ca ²⁺后恢复。因此，结果表明 Ca²⁺处理通过激活处理过的马铃薯中的苯丙烷代谢来诱导抗干腐病，抑制体重减轻率并加速SPP和SPA的积累。