ISSN:
1432-1890
Keywords:
Keywords Arbuscular mycorrhiza
;
Mycorrhizal inoculation effect
;
Nodulation mutants
;
Soybean
;
Supernodulation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Twelve nodulation mutants (seven non-nodulating and five supernodulating) of soybean [Glycine max (L.) Mirr.] were screened for arbuscular mycorrhizal colonization in the presence of either Glomus etunicatum Becker and Gerdemann or Gigaspora margarita Becker and Hall. The cultivars showed variation in colonization parameters. The two supernodulating mutants En6500 and NOD1–3 had higher frequencies of colonization with 2.5–4.5 times higher arbuscular abundance than the respective wild types. The enhanced mycorrhization resulted in significant enhancement of P uptake by En6500. The non-nodulating mutants showed decreases in mycorrhizal parameters. Mutants En1282 and Harosoy–exhibited aborted infection after formation of typical appressorium-like structures at some sites. However, none of these had the non-mycorrhizal phenotype. Growth and nutrient-uptake parameters should be considered while studying plant mutants for mycorrhization.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s005720000064
