Egamberdieva Dilfuza, Alimov Jakhongir, Shurigin Vyacheslav, Alaylar Burak, Wirth Stephan, Bellingrath-Kimura Sonoko Dorothea
Leibniz Centre for Agricultural Landscape Research (ZALF), 15374 Muncheberg, Germany.
Faculty of Biology, National University of Uzbekistan, Tashkent 100174, Uzbekistan.
Plants (Basel). 2021 Dec 24;11(1):49. doi: 10.3390/plants11010049.
The diversity of salt-tolerant cultivable endophytic bacteria associated with the halophyte New Zealand spinach ( (Pall.) Kuntze) was studied, and their plant beneficial properties were evaluated. The bacteria isolated from leaves and roots belonged to , , , , , , , , , and . Isolates exhibited plant growth-promoting traits, including the production of a phytohormone (indole 3-acetic-acid), cell wall degrading enzymes, and hydrogen cyanide production. Furthermore, antifungal activity against the plant pathogenic fungi , , and was detected. Ten out of twenty bacterial isolates were able to synthesize ACC deaminase, which plays a vital role in decreasing ethylene levels in plants. Regardless of the origin of isolated bacteria, root or leaf tissue, they stimulated plant root and shoot growth under 200 mM NaCl conditions. Our study suggests that halophytes such as New Zealand spinach are a promising source for isolating halotolerant plant-beneficial bacteria, which can be considered as potentially efficient biofertilizers in the bioremediation of salt-affected soils.
研究了与盐生植物新西兰菠菜（(Pall.) Kuntze）相关的耐盐可培养内生细菌的多样性，并评估了它们对植物有益的特性。从叶片和根部分离出的细菌属于、、、、、、、、、和。分离菌株表现出促进植物生长的特性，包括产生一种植物激素（吲哚-3-乙酸）、细胞壁降解酶以及产生氰化氢。此外，还检测到对植物病原真菌、和的抗真菌活性。二十株细菌分离物中有十株能够合成ACC脱氨酶，该酶在降低植物体内乙烯水平方面起着至关重要的作用。无论分离细菌的来源是根组织还是叶组织，它们在200 mM NaCl条件下都能刺激植物根和茎的生长。我们的研究表明，像新西兰菠菜这样的盐生植物是分离耐盐植物有益细菌的一个有前景的来源，这些细菌可被视为盐渍土壤生物修复中潜在有效的生物肥料。
