Microbial-enhanced Selenium and Iron Biofortification of Wheat (Triticum aestivum L.) - Applications in Phytoremediation and Biofortification

被引：72

作者：

Yasin, Muhammad ^{[1
,2
]}

El-Mehdawi, Ali Farag ^{[2
]}

Anwar, Aneela ^{[3
]}

Pilon-Smits, Elizabeth A. H. ^{[2
]}

Faisal, Muhammad ^{[1
]}

机构：

[1] Univ Punjab, Dept Microbiol & Mol Genet, Lahore 54590, Pakistan

[2] Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA

[3] Univ Punjab, Inst Agr Sci, Lahore 54590, Pakistan

来源：

INTERNATIONAL JOURNAL OF PHYTOREMEDIATION | 2015年 / 17卷 / 04期

关键词：

Bacillus pichinotyi; wheat biofortification; ICP-AES; micronutrients; CANCER; ACCUMULATION; INOCULATION; TOXICITY; GROWTH; FUNGI;

D O I：

10.1080/15226514.2014.922920

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Selenium (Se) is an essential trace element for humans and other mammals. Most dietary Se is derived from crops. To develop a Se biofortification strategy for wheat, the effect of selenate fertilization and bacterial inoculation on Se uptake and plant growth was investigated. YAM2, a bacterium with 99% similarity to Bacillus pichinotyi, showed many plant growth promoting characteristics. Inoculation with YAM2 enhanced wheat growth, both in the presence and absence of selenate: YAM2-inoculated plants showed significantly higher dry weight, shoot length and spike length compared to un-inoculated plants. Selenate also stimulated wheat growth; Un-inoculated Se-treated plants showed a significantly higher dry weight and shoot length compared to control plants without Se. Bacterial inoculation significantly enhanced Se concentration in wheat kernels (167%) and stems (252%), as well as iron (Fe) levels in kernels (70%) and stems (147%), compared to un-inoculated plants. Inoculated Se-treated plants showed a significant increase in acid phosphatase activity, which may have contributed to the enhanced growth. In conclusion; Inoculation with Bacillus sp. YAM2 is a promising Se biofortification strategy for wheat and potentially other crops.

引用

页码：341 / 347

页数：7

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