Detail publikace

The arbuscular mycorrhizal fungus Rhizophagus irregularis differentially regulates the copper response of two maize cultivars differing in copper tolerance

MERLOS RODRIGO, M. ZÍTKA, O. ADAM, V. CONCEPCIÓN AZCÓN-AGUILAR NURRIA FERROL

Originální název

The arbuscular mycorrhizal fungus Rhizophagus irregularis differentially regulates the copper response of two maize cultivars differing in copper tolerance

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Arbuscular mycorrhiza can increase plant tolerance to heavy metals. The effects of arbuscular mycorrhiza on plant metal tolerance vary depending on the fungal and plant species involved. Here, we report the effect of the arbuscular mycorrhizal fungus Rhizophagus irregularis on the physiological and biochemical responses to Cu of two maize genotypes differing in Cu tolerance, the Cu-sensitive cv. Orense and the Cu-tolerant cv. Oropesa. Development of the symbiosis confers an increased Cu tolerance to cv. Orense. Root and shoot Cu concentrations were lower in mycorrhizal than in non-mycorrhizal plants of both cultivars. Shoot lipid peroxidation increased with soil Cu content only in non-mycorrhizal plants of the Cu-sensitive cultivar. Root lipid peroxidation increased with soil Cu content, except in mycorrhizal plants grown at 250 mg Cu kg−1soil. In shoots of mycorrhizal plants of both cultivars, superoxide dismutase, ascorbate peroxidase, catalase and glutathione reductase activities were not affected by soil Cu content. In Cu-supplemented soils, total phytochelatin content increased in shoots of mycorrhizal cv. Orense but decreased in cv. Oropesa. Overall, these data suggest that the increased Cu tolerance of mycorrhizal plants of cv. Orense could be due to an increased induction of shoot phytochelatin biosynthesis by the symbiosis in this cultivar.

Klíčová slova

Arbuscular mycorrhiza; Copper; Maize; Oxidative stress; Phytochelatins

Autoři

MERLOS RODRIGO, M.; ZÍTKA, O.; ADAM, V.; CONCEPCIÓN AZCÓN-AGUILAR; NURRIA FERROL

Vydáno

1. 7. 2017

ISSN

0168-9452

Periodikum

PLANT SCIENCE

Ročník

253

Číslo

1

Stát

Irsko

Strany od

68

Strany do

76

Strany počet

9

BibTex

@article{BUT137877,
  author="MERLOS RODRIGO, M. and ZÍTKA, O. and ADAM, V. and CONCEPCIÓN AZCÓN-AGUILAR and NURRIA FERROL",
  title="The arbuscular mycorrhizal fungus Rhizophagus irregularis differentially regulates the copper response of two maize cultivars differing in copper tolerance",
  journal="PLANT SCIENCE",
  year="2017",
  volume="253",
  number="1",
  pages="68--76",
  doi="10.1016/j.plantsci.2016.09.010",
  issn="0168-9452"
}