کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2085860 1545475 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of an Endophytic Bacterium G062 Isolate with Beneficial Traits
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Characterization of an Endophytic Bacterium G062 Isolate with Beneficial Traits
چکیده انگلیسی

An endophytic bacterium isolate G062 was characterized base on its molecular genetic potents, morphology, physiology, and biochemistry reactions. Analysis of 16S rDNA sequences of G062 showed the highest similarity to Paracoccus halophilus (98%). Detection of the phlD and prnC genes occurrence indicated that the bacterium had this antibiotic-like genes of Diacethylphloroglucinol (DAPG) and pyrrolnitrin. The cells are rod shaped (0.59-0.89 × 1.85-3.3 μm), aerobic, Gram negative, non motile, non spore forming, positive catalase, positive oxydase, could reduce NO3 to N2, nitrogen fixing, producing siderophore and plant growth hormones-like compounds (IAA, Gibberellin, and zeatin), and solubilizing phosphate. The G062 isolate could grow on media containing 2.5% NaCl. Range of the temperature and pH growth were 15-40 and 5.0-9.5 °C, respectively. The bacterium did not cause red blood cells lysis. There was no hypersensitive response when it was injected into tobacco leaves, and it was not pathogenic against potato plantlets. Moreover, the bacterium promoted the growth of the potato plant and had high colonization ability. These results suggested that the bacterium had beneficial and good traits as biological agent candidate to promote potato plant growth.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: HAYATI Journal of Biosciences - Volume 21, Issue 4, December 2014, Pages 187–196
نویسندگان
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