Rootstock influence on iron uptake responses in Citrus leaves and their regulation under the Fe paradox effect.

ABSTRACT:

Background and aims

This work evaluates the regulation of iron uptake responses in Citrus leaves and their involvement in the Fe paradox effect.

Methods

Experiments were performed in field-grown 'Navelina' trees grafted onto two Cleopatra mandarin × Poncirus trifoliata (L.) Raf. hybrids with different Fe-chlorosis symptoms: 030146 (non-chlorotic) and 030122 (chlorotic).

Results

Chlorotic leaves were smaller than non-chlorotic ones for both dry weight (DW) and area basis, and exhibited marked photosynthetic state affection, but reduced catalase and peroxidase enzymatic activities. Although both samples had a similar total Fe concentration on DW, it was lower in chlorotic leaves when expressed on an area basis. A similar pattern was observed for the total Fe conc

SUBMITTER: Martinez-Cuenca MR 

PROVIDER: S-EPMC5619235 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature