Interaction between Vitis vinifera and grape phylloxera: changes in root tissue during nodosity formation.

ABSTRACT:

Background and aims

The interaction between the gall-forming grapevine parasite, phylloxera, and the susceptible grapevine species Vitis vinifera was investigated.

Methods

Phylloxera and grapevines were cocultivated using both potted and micropropagated grapevines. Development of nodosities on primary roots was studied by microscopy and histochemistry, and nodosities were analysed for biochemical changes and changes in gene expression.

Key results

Within a nodosity, phylloxera fed at a site in the root cortex. Nodosity development was characterized by swelling of the root tissue distal to the feeding site, lack of development of a suberized endodermis, and starch and amino acid accumulation, and was eventually followed by root necrosis. No evidence of a defence respon

SUBMITTER: Kellow AV 

PROVIDER: S-EPMC4242323 | biostudies-literature | 2004 May

REPOSITORIES: biostudies-literature