Kiumarzi Fatemeh, Morshedloo Mohammad Reza, Zahedi Seyed Morteza, Mumivand Hasan, Behtash Farhad, Hano Christophe, Chen Jen-Tsung, Lorenzo Jose M
Department of Horticultural Science, Faculty of Agriculture, University of Maragheh, Maragheh 83111-55181, Iran.
Department of Horticultural Science, Faculty of Agriculture, Lorestan University, Khorramabad 68151-44316, Iran.
Plants (Basel). 2022 May 23;11(10):1384. doi: 10.3390/plants11101384.
The present study examined the effects of foliar spray of selenium nanoparticles (0, 10 and 20 mg/L) on the yield, phytochemicals and essential oil content and composition of pineapple mint ( Ehrh.) under salinity stress (0, 30, 60 and 90 mM NaCl). Obtained results demonstrated that severe salinity stress reduced the fresh weight (FW) and plant height (PH) by 16.40% and 19.10%, respectively compared with normal growth condition. On the other hands, under sever salinity stress relative water content (RWC) and chlorophyll index were reduced by 18.05% and 3.50%, respectively. Interestingly, selenium nanoparticles (Se-NPs; 10 mg/L) application improved the pineapple mint growth. Based on GC-FID and GC-MS analysis, 19 compounds were identified in pineapple mint essential oil. Foliar application of Se-NPs and salinity did not change the essential oil content of pineapple mint, however, the essential oil compounds were significantly affected by salinity and Se-NPs- applications. Foliar application of Se-NPs- had a significant effect on piperitenone oxide, limonene, jasmone, viridiflorol and -myrsene under different salinity levels. The highest percentage of piperitenone oxide (79.4%) as the major essential oil component was recorded in the no salinity treatment by applying 10 mg/L of nanoparticle. Interestingly, application of 10 mg L Se-NPs- under 60 mM NaCl increased the piperitenone oxide content by 9.1% compared with non-sprayed plants. Finally, the obtained results demonstrated that foliar application of Se-NPs (10 mg L) can improve the pineapple mint growth and secondary metabolites profile under saline conditions.
本研究考察了在盐胁迫（0、30、60和90 mM NaCl）条件下，叶面喷施硒纳米颗粒（0、10和20 mg/L）对凤梨薄荷（Ehrh.）产量、植物化学物质、精油含量及成分的影响。结果表明，与正常生长条件相比，重度盐胁迫使鲜重（FW）和株高（PH）分别降低了16.40%和19.10%。另一方面，在重度盐胁迫下，相对含水量（RWC）和叶绿素指数分别降低了18.05%和3.50%。有趣的是，施用硒纳米颗粒（Se-NPs；10 mg/L）可促进凤梨薄荷生长。基于气相色谱-火焰离子化检测器（GC-FID）和气相色谱-质谱联用仪（GC-MS）分析，在凤梨薄荷精油中鉴定出19种化合物。叶面喷施Se-NPs和盐胁迫并未改变凤梨薄荷的精油含量，然而，精油成分受到盐胁迫和Se-NPs施用的显著影响。在不同盐度水平下，叶面喷施Se-NPs对氧化胡椒酮、柠檬烯、茉莉酮、绿花白千层醇和β-月桂烯有显著影响。在无盐处理中，通过施用10 mg/L纳米颗粒，记录到氧化胡椒酮作为主要精油成分的最高比例为79.4%。有趣的是，在60 mM NaCl条件下施用10 mg/L Se-NPs，与未喷施的植株相比，氧化胡椒酮含量增加了9.1%。最后，研究结果表明，叶面喷施Se-NPs（10 mg/L）可在盐胁迫条件下促进凤梨薄荷生长并改善其次生代谢产物谱。
