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Improved tolerance of maize (Zea mays L.) to heavy metals by colonization of a dark septate endophyte (DSE) Exophiala pisciphila.
Sci Total Environ. 2011 Feb 15; 409(6):1069-74.ST

Abstract

Dark septate endophytes (DSE) are ubiquitous and abundant in stressful environments including heavy metal (HM) stress. However, our knowledge about the roles of DSE in improving HM tolerance of their host plants is poor. In this study, maize (Zea mays L.) was inoculated with a HM tolerant DSE strain Exophiala pisciphila H93 in lead (Pb), zinc (Zn), and cadmium (Cd) contaminated soils. E. pisciphila H93 successfully colonized and formed typical DSE structures in the inoculated maize roots. Colonization of E. pisciphila H93 alleviated the deleterious effects of excessive HM supplements and promoted the growth of maize (roots and shoots) under HM stress conditions, though it significantly decreased the biomass of inoculated maize under no HM stress. Further analysis showed that the colonization of E. pisciphila H93 improved the tolerance of maize to HM by restricting the translocation of HM ions from roots to shoots. This study demonstrated that under higher HM stress, such a mutual symbiosis between E. pisciphila and its host (maize) may be an efficient strategy to survive in the stressful environments.

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Authors+Show Affiliations

Li T
Key Laboratory of Conservation and Utilization for Bioresources, Yunnan University, Kunming, 650091 Yunnan, China.
Liu MJ
No affiliation info available
Zhang XT
No affiliation info available
Zhang HB
No affiliation info available
Sha T
No affiliation info available
Zhao ZW
No affiliation info available

MeSH

Adaptation, PhysiologicalExophialaMetals, HeavyPlant RootsSoil PollutantsStress, PhysiologicalSymbiosisZea mays

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21195456

Citation

Li, T, et al. "Improved Tolerance of Maize (Zea Mays L.) to Heavy Metals By Colonization of a Dark Septate Endophyte (DSE) Exophiala Pisciphila." The Science of the Total Environment, vol. 409, no. 6, 2011, pp. 1069-74.
Li T, Liu MJ, Zhang XT, et al. Improved tolerance of maize (Zea mays L.) to heavy metals by colonization of a dark septate endophyte (DSE) Exophiala pisciphila. Sci Total Environ. 2011;409(6):1069-74.
Li, T., Liu, M. J., Zhang, X. T., Zhang, H. B., Sha, T., & Zhao, Z. W. (2011). Improved tolerance of maize (Zea mays L.) to heavy metals by colonization of a dark septate endophyte (DSE) Exophiala pisciphila. The Science of the Total Environment, 409(6), 1069-74. https://doi.org/10.1016/j.scitotenv.2010.12.012
Li T, et al. Improved Tolerance of Maize (Zea Mays L.) to Heavy Metals By Colonization of a Dark Septate Endophyte (DSE) Exophiala Pisciphila. Sci Total Environ. 2011 Feb 15;409(6):1069-74. PubMed PMID: 21195456.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Improved tolerance of maize (Zea mays L.) to heavy metals by colonization of a dark septate endophyte (DSE) Exophiala pisciphila. AU - Li,T, AU - Liu,M J, AU - Zhang,X T, AU - Zhang,H B, AU - Sha,T, AU - Zhao,Z W, Y1 - 2010/12/30/ PY - 2010/08/20/received PY - 2010/12/02/revised PY - 2010/12/02/accepted PY - 2011/1/4/entrez PY - 2011/1/5/pubmed PY - 2011/3/17/medline SP - 1069 EP - 74 JF - The Science of the total environment JO - Sci Total Environ VL - 409 IS - 6 N2 - Dark septate endophytes (DSE) are ubiquitous and abundant in stressful environments including heavy metal (HM) stress. However, our knowledge about the roles of DSE in improving HM tolerance of their host plants is poor. In this study, maize (Zea mays L.) was inoculated with a HM tolerant DSE strain Exophiala pisciphila H93 in lead (Pb), zinc (Zn), and cadmium (Cd) contaminated soils. E. pisciphila H93 successfully colonized and formed typical DSE structures in the inoculated maize roots. Colonization of E. pisciphila H93 alleviated the deleterious effects of excessive HM supplements and promoted the growth of maize (roots and shoots) under HM stress conditions, though it significantly decreased the biomass of inoculated maize under no HM stress. Further analysis showed that the colonization of E. pisciphila H93 improved the tolerance of maize to HM by restricting the translocation of HM ions from roots to shoots. This study demonstrated that under higher HM stress, such a mutual symbiosis between E. pisciphila and its host (maize) may be an efficient strategy to survive in the stressful environments. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/21195456/Improved_tolerance_of_maize__Zea_mays_L___to_heavy_metals_by_colonization_of_a_dark_septate_endophyte__DSE__Exophiala_pisciphila_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(10)01315-X DB - PRIME DP - Unbound Medicine ER -