Publications des scientifiques de l'IRD

Hoang Nam Pham, Michalet S., Bodillis J., Tien Dat Nguyen, Thi Kieu Oanh Nguyen, Thi Phuong Quynh Le, Haddad Mohamed, Nazaret S., Dijoux-Franca M. G. (2017). Impact of metal stress on the production of secondary metabolites in Pteris vittata L. and associated rhizosphere bacterial communities. Environmental Science and Pollution Research, 24 (20), p. 16735-16750. ISSN 0944-1344.

Titre du document
Impact of metal stress on the production of secondary metabolites in Pteris vittata L. and associated rhizosphere bacterial communities
Année de publication
2017
Type de document
Article référencé dans le Web of Science WOS:000405580000018
Auteurs
Hoang Nam Pham, Michalet S., Bodillis J., Tien Dat Nguyen, Thi Kieu Oanh Nguyen, Thi Phuong Quynh Le, Haddad Mohamed, Nazaret S., Dijoux-Franca M. G.
Source
Environmental Science and Pollution Research, 2017, 24 (20), p. 16735-16750 ISSN 0944-1344
Plants adapt to metal stress by modifying their metabolism including the production of secondary metabolites in plant tissues. Such changes may impact the diversity and functions of plant associated microbial communities. Our study aimed to evaluate the influence of metals on the secondary metabolism of plants and the indirect impact on rhizosphere bacterial communities. We then compared the secondary metabolites of the hyperaccumulator Pteris vittata L. collected from a contaminated mining site to a non-contaminated site in Vietnam and identified the discriminant metabolites. Our data showed a significant increase in chlorogenic acid derivatives and A-type procyanidin in plant roots at the contaminated site. We hypothesized that the intensive production of these compounds could be part of the antioxidant defense mechanism in response to metals. In parallel, the structure and diversity of bulk soil and rhizosphere communities was studied using high-throughput sequencing. The results showed strong differences in bacterial composition, characterized by the dominance of Proteobacteria and Nitrospira in the contaminated bulk soil, and the enrichment of some potential human pathogens, i.e., Acinetobacter, Mycobacterium, and Cupriavidus in P. vittata's rhizosphere at the mining site. Overall, metal pollution modified the production of P. vittata secondary metabolites and altered the diversity and structure of bacterial communities. Further investigations are needed to understand whether the plant recruits specific bacteria to adapt to metal stress.
Plan de classement
Pollution [038] ; Pédologie [068] ; Biologie du sol [074] ; Sciences du monde végétal [076]
Description Géographique
VIET NAM
Localisation
Fonds IRD [F B010070372]
Identifiant IRD
fdi:010070372
Contact