Department of Biological Sciences, College of Natural and Applied Sciences, Crescent University, Abeokuta, Ogun State, Nigeria.
Food Chem Toxicol. 2010 Nov;48(11):3262-7. doi: 10.1016/j.fct.2010.08.035. Epub 2010 Sep 8.
Pollution of the agricultural land by the toxic chromium is a global threat that has accelerated dramatically since the beginning of industrial revolution. Toxic chromium affects both the microbial diversity as well as reduces the growth of the plants. Understanding the effect of the chromium reducing and plant growth promoting rhizobacteria on chickpea crop will be useful. Chromium reducing and plant growth promoting Bacillus species PSB10 significantly improved growth, nodulation, chlorophyll, leghaemoglobin, seed yield and grain protein of chickpea crop grown in the presence of different concentrations of chromium compared to the plants grown in the absence of bio-inoculant. The strain also reduced the uptake of chromium in roots, shoots and grains of chickpea crop compared to plants grown in the absence of bio-inoculant. This study thus suggested that the Bacillus species PSB10 due to its intrinsic abilities of growth promotion and attenuation of the toxic effects of chromium could be exploited for remediation of chromium from chromium contaminated sites.
农业土地受到有毒铬的污染是一个全球性的威胁，自工业革命开始以来，这一威胁急剧加剧。有毒铬不仅影响微生物多样性，还会降低植物的生长速度。了解具有还原铬和促进植物生长能力的根际细菌对鹰嘴豆作物的影响将是有益的。与未使用生物接种剂的植物相比，铬还原和促进植物生长的芽孢杆菌 PSB10 显著提高了不同浓度铬存在条件下生长的鹰嘴豆作物的生长、结瘤、叶绿素、豆血红蛋白、种子产量和籽粒蛋白。与未使用生物接种剂的植物相比，该菌株还减少了鹰嘴豆作物根系、茎叶和籽粒对铬的吸收。因此，这项研究表明，由于芽孢杆菌 PSB10 具有促进生长和减轻铬毒性的内在能力，因此可以利用它来修复铬污染场地的铬。
