Biological nitrogen fixation of Biserrula pelecinus L. under water deficit

To chci

The present work studied the effects of water deficiency conditions on the biological nitrogen fixation of three native rhizobia (SafPt12, SafPt6, and AjuPt16) isolated from Biserrula pelecinus L., and a reference strain Mesorhizobium ciceri biovar biserrulae. In terms of plant-water status, B. pelecinus showed typical signs of drought avoidance strategies such as reducing the aboveground development (i.e. reduction in leaf surface area and increase in root/shoot ratio) in detriment of a better developed root system. Dry-matter production and nitrogen content of the aboveground biomass decreased with the increasing levels of drought stress, as well as nodulation and symbiotic nitrogen fixation, for all the tested isolates. The parameters investigated suggested that SafPt12 was the most successful native rhizobia to withstand severe water conditions without compromising nitrogen fixation demands. … celý popis

Podrobná bibliografie

Další autoři

Vicente C. S. L., M. A. Pérez-Fernández, G. Pereira, M. M. Tavares-de-Sousa

Typ dokumentu

Články

Fyzický popis

4 il.

Publikováno v

Plant, Soil and Environment. -- ISSN 1214-1178. -- Roč. 58, č. 8 (2012), s. 360-366

Témata

Rhizobium

sucho

stres ze sucha

biomasa

obsah sušiny

dusík

fixace dusíku

RHIZOBIUM

DROUGHT

DROUGHT STRESS

BIOMASS

DRY MATTER CONTENT

NITROGEN

NITROGEN FIXATION

Biserrula pelecinus > Mesorhizobium ciceri

více… méně…

Popis jednotky

2 grafy, 2 tabulky

Bibliografie

Bibliografie na s. 365-366