Perfileva Alla I, Zakharova Olga V, Graskova Irina A, Krutovsky Konstantin V
Laboratory of Plant-Microbe Interactions, Siberian Institute of Plant Physiology and Biochemistry, Siberian Branch of the Russian Academy of Sciences, 664033 Irkutsk, Russia.
Scientific and Educational Center for Environmental Science and Biotechnology, Derzhavin Tambov State University, 392020 Tambov, Russia.
Plants (Basel). 2024 Dec 14;13(24):3496. doi: 10.3390/plants13243496.
The effect of chemically synthesized nanocomposites (NCs) of selenium (Se/AG NC), copper oxide (Cu/AG NC) and manganese hydroxide (Mn/AG NC), based on the natural polymer arabinogalactan (AG), on the processes of growth, development and colonization of potato plants in vitro was studied upon infection with the causative agent of potato blackleg-the Gram-negative bacterium -and the causative agent of ring rot-the Gram-positive bacterium (). It was shown that the infection of potatoes with reduced the root formation of plants and the concentration of pigments in leaf tissues. The treatment of plants with Cu/AG NC before infection with stimulated leaf formation and increased the concentration of pigments in them. A similar effect was observed when potatoes were exposed to Mn/AG NC, and an increase in growth and root formation was also observed. The infection of plants with Cms inhibited plant growth. Treatment with each of the NCs mitigated this negative effect of the phytopathogen. At the same time, Se/AG and Mn/AG NCs promoted leaf formation. The Se/AG NC increased the biomass of -infected plants. The treatment of plants with NCs before infection showed a decrease in the intensity of the colonization of plants by bacteria. The Se/AG NC had the maximum effect, which is probably due to its high antioxidant capacity. Thus, the NCs are able to mitigate the negative effects of bacterial phytopathogens on vegetation and the intensity of colonization by these bacteria during the infection of cultivated plants.
研究了基于天然聚合物阿拉伯半乳聚糖（AG）的化学合成纳米复合材料（NCs），即硒（Se/AG NC）、氧化铜（Cu/AG NC）和氢氧化锰（Mn/AG NC），对马铃薯植株在体外感染马铃薯黑胫病病原体——革兰氏阴性菌以及环腐病病原体——革兰氏阳性菌时的生长、发育和定殖过程的影响。结果表明，感染[未提及具体病菌名称]会降低植株的生根能力以及叶片组织中色素的浓度。在感染[未提及具体病菌名称]之前用Cu/AG NC处理植株，可刺激叶片形成并增加其中色素的浓度。当马铃薯暴露于Mn/AG NC时也观察到了类似的效果，并且还观察到生长和生根有所增加。感染[未提及具体病菌名称]会抑制植株生长。用每种NC处理均可减轻这种植物病原体的负面影响。同时，Se/AG和Mn/AG NCs促进叶片形成。Se/AG NC增加了感染[未提及具体病菌名称]植株的生物量。在感染前用NCs处理植株，可降低细菌对植株的定殖强度。Se/AG NC的效果最为显著，这可能归因于其高抗氧化能力。因此，在栽培植物感染期间，NCs能够减轻细菌性植物病原体对植被的负面影响以及这些细菌的定殖强度。
