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首页> 美国卫生研究院文献>Saudi Journal of Biological Sciences >Alleviation of fungicide-induced phytotoxicity in greengram Vigna radiata (L.) Wilczek using fungicide-tolerant and plant growth promoting Pseudomonas strain
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Alleviation of fungicide-induced phytotoxicity in greengram Vigna radiata (L.) Wilczek using fungicide-tolerant and plant growth promoting Pseudomonas strain

机译：使用耐杀菌剂和促进植物生长的假单胞菌菌株减轻绿豆菌中的杀菌剂诱导的植物毒性

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This study was designed to explore beneficial plant-associated rhizobacteria exhibiting substantial tolerance against fungicide tebuconazole vis-à-vis synthesizing plant growth regulators under fungicide stressed soils and to evaluate further these multifaceted rhizobacteria for protection and growth promotion of greengram [Vigna radiata (L.) Wilczek] plants against phytotoxicity of tebuconazole. Tebuconazole-tolerant and plant growth promoting bacterial strain PS1 was isolated from mustard (Brassica compestris) rhizosphere and identified as Pseudomonas aeruginosa following 16S rRNA gene sequencing. The P. aeruginosa strain PS1 solubilized phosphate significantly and produced indole acetic acid, siderophores, exo-polysaccharides, hydrogen cyanide and ammonia even under tebuconazole stress. Generally, tebuconazole at the recommended, two and three times the recommended field rate adversely affected the growth, symbiosis, grain yield and nutrient uptake in greengram in a concentration dependent manner. In contrast, the P. aeruginosa strain PS1 along with tebuconazole significantly, increased the growth parameters of the greengram plants. The inoculant strain PS1 increased appreciably root nitrogen, shoot nitrogen, root phosphorus, shoot phosphorus, and seed yield of greengram plants at all tested concentrations of tebuconazole when compared to the uninoculated plants treated with tebuconazole. The results suggested that the P. aeruginosa strain PS1, exhibiting novel plant growth regulating physiological features, can be applied as an eco-friendly and plant growth catalyzing bio-inoculant to ameliorate the performance of greengram in fungicide stressed soils.
机译：这项研究旨在探讨在杀菌剂胁迫的土壤下，合成植物生长调节剂对植物杀菌剂戊丁唑显示出实质性耐受性的有益植物相关根瘤菌，并进一步评估这些多方面的根瘤菌对绿豆（Vigna radiata（L. ）Wilczek]对戊唑醇的植物毒性。从芥菜（Brassica compestris）根际中分离出耐戊唑醇和促进植物生长的细菌菌株PS1，并在16S rRNA基因测序后将其鉴定为铜绿假单胞菌。铜绿假单胞菌菌株PS1显着溶解了磷酸盐，即使在戊唑醇胁迫下也产生了吲哚乙酸，铁载体，胞外多糖，氰化氢和氨。通常，戊草唑在推荐的田间施用率下是推荐的田间施用率的两倍和三倍，对绿豆的生长，共生，谷物产量和养分吸收产生不利影响，其浓度依赖性。相比之下，铜绿假单胞菌菌株PS1和戊丁康唑显着增加了格林格拉植物的生长参数。与未用戊唑醇处理的未接种植物相比，接种菌菌株PS1在所有浓度的戊唑醇下均显着增加了绿豆植物的根氮，枝氮，根磷，茎磷和种子产量。结果表明，展现出新颖的植物生长调节生理特征的铜绿假单胞菌菌株PS1可以用作生态友好型和植物生长催化生物接种剂，以改善绿霉在杀真菌剂胁迫的土壤中的性能。

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