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Endophytic fungus Acrophialophora jodhpurensis induced resistance against tomato early blight via interplay of reactive oxygen species, iron and antioxidants
Physiological and Molecular Plant Pathology ( IF 2.8 ) Pub Date : 2021-06-29 , DOI: 10.1016/j.pmpp.2021.101681
Zoha Daroodi , Parissa Taheri , Saeed Tarighi

In this study, potential of the endophytic fungus Acrophialophora jodhpurensis in induction of tomato resistance against Alternaria alternata the causal agent of early blight disease, was investigated. The obtained results revealed that colonization of tomato roots by A. jodhpurensis reduced progress of the disease caused by A. alternata on the leaves. Activity of antioxidant enzymes, phenolic contents, lignin accumulation, relative water content, cell membrane stability, accumulations of superoxide (O2-) and hydrogen peroxide (H2O2) increased, also iron ions and cell death reduced in the plants inoculated with A. jodhpurensis prior to the pathogen infection. Therefore, the beneficial root colonizing fungus A. jodhpurensis might be an appropriate candidate for plant protection against A. Alternata via induction of systemic resistance in the plant tissues, which is related to activation of various defense mechanisms.



中文翻译:

内生真菌 Acrophialophora jodhpurensis 通过活性氧、铁和抗氧化剂的相互作用诱导番茄早疫病抗性

在这项研究中,研究了内生真菌 Acrophialophora jodhpurensis 在诱导番茄对交链格孢(早疫病的病原体)抗性方面的潜力。获得的结果表明,A. jodhpurensis 对番茄根的定植减少了由A. alternata引起的疾病的进展在叶子上。抗氧化酶的活性、酚类含量、木质素积累、相对含水量、细胞膜稳定性、超氧化物 (O2-) 和过氧化氢 (H2O2) 的积累增加,铁离子和细胞死亡也减少了之前接种 A. jodhpurensis 的植物到病原体感染。因此,有益的根定植真菌 A. jodhpurensis 可能是通过诱导植物组织中的系统抗性来对抗 A. Alternata 的植物保护的合适候选者,这与各种防御机制的激活有关。

更新日期:2021-07-04
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