Cookies Policy
X

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Ultrastructure of Initial Response of Graminaceous Roots To Infection By Heterodera a Venae

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites

image of Nematologica
For more content, see Nematology.

Ultrastructural changes induced by two pathotypes, Ha22 and Ha71 (Spanish populations), of the cereal cyst nematode Heterodera avenae on wheat cv. Anza and on oat cv. Cometa are described from 24 h to 5 days after nematode inoculation. Pathotype Ha22 selected as a feeding site the stelar parenchyma cells of wheat roots, which responded with extensive hypertrophy, increase in cellular organelles and formation of elaborate ingrowths of the cell walls adjacent to xylem tracheal elements as seen in a 5 day-old syncytium. On the same host, pathotype Ha71 fed upon xylem parenchyma cells that reacted early (24 h) with callose-like and osmiophilic granule deposits on their walls, leading to the degradation of the induced syncytium within 5 days. Feeding of both pathotypes on oat roots induced a hypersensitive host reaction, characterized by extensive necrosis of the endodermis and pericycle. Pathotype Ha22 induced small syncytia in the stele where cellular response was expressed through involution of the cytoplasmic content, indicating a lack of nutrients from plant to nematode. Pathotype Ha71 did not form syncytia in the stelar tissue and fed only on cortical cells, which were transformed into secretory transfer-like cells.

Affiliations: 1: ) Istituto di Nematologia Agraria, CNR, Amendola 165/A, 70126 Bari, Italy; 2: ) Centro de Ciencias Medioambientales, Serrano 115, Madrid, Spain

Loading

Full text loading...

/content/journals/10.1163/003925995x00062
Loading

Data & Media loading...

http://brill.metastore.ingenta.com/content/journals/10.1163/003925995x00062
Loading

Article metrics loading...

/content/journals/10.1163/003925995x00062
1995-01-01
2016-10-01

Sign-in

Can't access your account?
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation