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首页> 外文期刊>Medicinal and Aromatic Plant Science and Biotechnology >Salt-tolerant Pseudomonas extremorientalis Able to Stimulate Growth of Silybum marianum under Salt Stress
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Salt-tolerant Pseudomonas extremorientalis Able to Stimulate Growth of Silybum marianum under Salt Stress

机译：耐盐假单胞菌能够刺激盐胁迫下水飞蓟的生长。

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摘要

The effect of root-colonizing Pseudomonas extremorientalis TSAU20 on the root and shoot growth and biomass was determined in the medicinal plant Silybum marianum (milk thistle) under salinated conditions. Four salinity levels (25, 50, 75 and 100 raM)were maintained in a gnotobiotic system using NaCl salt. Shoot and root growth were reduced as much as 42% and fresh weight as much as 31% at 100 mM NaCl. Inoculation of salt-stressed milk thistle with P. extremorientalis TSAU20 significantly improved root length (90%), shoot length (66%) and total fresh weight (64%) at 100 mM NaCl compared to control plants. P. extremorientalis TSAU20 also increased the root and shoot length and dry weight of milk thistle in non-saline (0.8 dS m~(-1)), slightly saline(E_c 2.3 dS m~(-1)) and saline (Ec 7.1 dS in ') soil. The root length increased by 49%, shoot length by 67% and dry weight by 21%. The strain was able to survive in the rhizosphere of plants. The results presented here make it possible for recommending root-colonizing, auxin-producing P. extremorientalis TSAU20 to alleviate salt stress of milk thistle grown under conditions of soil salinity.
机译：在盐渍条件下，在药用植物水飞蓟（水飞蓟）中测定了根定殖性极端假单胞菌TSAU20对根和茎生长及生物量的影响。使用NaCl盐在生生物系统中维持四个盐度水平（25、50、75和100 raM）。在100 mM NaCl中，枝条和根的生长减少了多达42％，鲜重减少了31％。与对照植物相比，在100 mM NaCl中，用极端疟原虫TSAU20接种盐胁迫的乳蓟可显着改善根长（90％），苗长（66％）和总鲜重（64％）。 P. extremorientalis TSAU20还增加了无盐（0.8 dS m〜（-1）），少量生理盐水（E_c 2.3 dS m〜（-1））和生理盐水（Ec 7.1）中水飞蓟的根和茎长度以及干重。 dS在'）土壤中。根长增加49％，苗长增加67％，干重增加21％。该菌株能够在植物的根际中存活。此处提出的结果使得可能推荐根定殖，产生生长素的极度假单胞菌TSAU20，以减轻在土壤盐分条件下生长的乳蓟的盐胁迫。

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