干旱区生态环境知识资源中心(Arid): Chromium Hyper-Tolerant Bacillus sp. MH778713 Assists Phytoremediation of Heavy Metals by Mesquite Trees (Prosopis laevigata)

Arid

DOI	10.3389/fmicb.2019.01833
	Chromium Hyper-Tolerant Bacillus sp. MH778713 Assists Phytoremediation of Heavy Metals by Mesquite Trees (Prosopis laevigata)
	Ramirez, Veronica 1; Baez, Antonino 1; Lopez, Primavera 2; Bustillos, Rocio 1; Angel Villalobos, Miguel 3; Carreno, Ricardo 1; Luis Contreras, Jose 4; Munoz-Rojas, Jesus 1; Ernesto Fuentes, Luis 1; Martinez, Javier 2; Antonio Munive, Jose 1
通讯作者	Antonio Munive, Jose
来源期刊	FRONTIERS IN MICROBIOLOGY
EISSN	1664-302X
出版年	2019
卷号	10
英文摘要	Heavy metal accumulation in mesquite trees (Prosopis laevigata) growing in aluminum, titanium, chromium and zirconium-polluted soils of a semi-arid region in Mexico was investigated using wavelength dispersive X-ray fluorescence analysis. The results showed that P. laevigata trees can hyper accumulate up to 4100 mg/kg of Al, 14000 mg/kg of Fe, 1600 mg/kg of Ti, 2500 mg/kg of Zn, but not chromium, regarding high chromium concentrations found in soils (435 mg/kg). Since plant-associated microorganism can modulate phytoremediation efficiency, the biodiversity of P. laevigata associated bacteria was studied. Eighty-eight isolates from P. laevigata nodules were obtained; all isolates tolerated high concentrations of Al, Fe, Zn and Cr in vitro. The top-six chromium tolerant strains were identified by 16S rRNA sequence analysis as belonging to genus Bacillus. Bacillus sp. MH778713, close to Bacillus cereus group, showed to be the most resistant strain, tolerating up to 15000 mg/L Cr (VI) and 10000 mg/L of Al. Regarding the bioaccumulation traits, Bacillus sp. MH778713 accumulated up to 100 mg Cr(VI)/g of cells when it was exposed to 1474 mg/L of Cr VI. To assess Bacillus sp. MH778713 ability to assist Prosopis laevigata phytoremediation; twenty plants were inoculated or non-inoculated with Bacillus sp. MH778713 and grown in nitrogen-free Jensen's medium added with 0, 10 and 25 mg/L of Cr(VI). Only plants inoculated with Bacillus sp. grew in the presence of chromium showing the ability of this strain to assist chromium phytoremediation. P. laevigata and Bacillus spp. may be considered as good candidates for soil restoration of arid and semiarid sites contaminated with heavy metals.
英文关键词	heavy metal tolerance phytoremediation Bacillus Prosopis (mesquite) chromium (VI)
类型	Article
语种	英语
国家	Mexico
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000480536800001
WOS关键词	PLANT-GROWTH ; SPECIES MESQUITE ; AQUEOUS-SOLUTION ; REDUCTION ; CR(VI) ; ALUMINUM ; BACTERIA ; SPP. ; SOIL ; JULIFLORA
WOS类目	Microbiology
WOS研究方向	Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215804
作者单位	1.Benemerita Univ Autonoma Puebla, Ctr Invest Ciencias Microbiol, Inst Ciencias, Puebla, Mexico; 2.Benemerita Univ Autonoma Puebla, Ctr Invest Dispositivos Semicond, Inst Ciencias, Puebla, Mexico; 3.Inst Politecn Nacl, Ctr Invest Biotecnol Aplicada, Tlaxcala, Mexico; 4.Benemerita Univ Autonoma Puebla, Fac Arquitectura, Puebla, Mexico
推荐引用方式 GB/T 7714	Ramirez, Veronica,Baez, Antonino,Lopez, Primavera,et al. Chromium Hyper-Tolerant Bacillus sp. MH778713 Assists Phytoremediation of Heavy Metals by Mesquite Trees (Prosopis laevigata)[J],2019,10.
APA	Ramirez, Veronica.,Baez, Antonino.,Lopez, Primavera.,Bustillos, Rocio.,Angel Villalobos, Miguel.,...&Antonio Munive, Jose.(2019).Chromium Hyper-Tolerant Bacillus sp. MH778713 Assists Phytoremediation of Heavy Metals by Mesquite Trees (Prosopis laevigata).FRONTIERS IN MICROBIOLOGY,10.
MLA	Ramirez, Veronica,et al."Chromium Hyper-Tolerant Bacillus sp. MH778713 Assists Phytoremediation of Heavy Metals by Mesquite Trees (Prosopis laevigata)".FRONTIERS IN MICROBIOLOGY 10(2019).