Results 11 to 20 of about 1,853 (161)

Variation in the ureide content of Jack Bean during the reproductive stages in response to nitrate [PDF]

open access: yes, 2009
Nitrogen is frequently the limiting mineral nutrient for plant productivity and it is essential to obtain an understanding of how this element is assimilated and its metabolism regulated, in crop plants.
AGUIAR, Leandro Ferreira   +3 more
core   +3 more sources

Local inhibition of nitrogen fixation and nodule metabolism in drought-stressed soybean [PDF]

open access: yes, 2013
Drought stress is a major factor limiting symbiotic nitrogen fixation (NF) in soybean crop production. However, the regulatory mechanisms involved in this inhibition are still controversial.
Arrese-Igor, César   +8 more
core   +1 more source

Concerted changes in N and C primary metabolism in alfalfa (Medicago sativa) under water restriction [PDF]

open access: yes, 2013
Although the mechanisms of nodule N2 fixation in legumes are now well documented, some uncertainty remains on the metabolic consequences of water deficit.
Aranjuelo   +66 more
core   +4 more sources

Carbon dioxide level and form of soil nitrogen regulate assimilation of atmospheric ammonia in young trees. [PDF]

open access: yes, 2015
The influence of carbon dioxide (CO2) and soil fertility on the physiological performance of plants has been extensively studied, but their combined effect is notoriously difficult to predict.
Doane, Timothy A   +3 more
core   +1 more source

Nitrogen modulation of legume root architecture signaling pathways involves phytohormones and small regulatory molecules [PDF]

open access: yes, 2015
Nitrogen, particularly nitrate is an important yield determinant for crops. However, current agricultural practice with excessive fertilizer usage has detrimental effects on the environment.
Djordjevic, Michael   +2 more
core   +1 more source

GuaB Activity Is Required in Rhizobium tropici During the Early Stages of Nodulation of Determinate Nodules but Is Dispensable for the Sinorhizobium meliloti–Alfalfa Symbiotic Interaction [PDF]

open access: yes, 2005
The guaB mutant strain Rhizobium tropici CIAT8999-10T is defective in symbiosis with common bean, forming nodules that lack rhizobial content. In order to investigate the timing of the guaB requirement during the nodule formation on the host common ...
Aguilar, Orlando Mario   +4 more
core   +4 more sources

Expression of Some Molybdoenzyme Genes under Salt Stress Conditions in Chickpea, Bean and Lentil Plants [PDF]

open access: yes, 2016
The objective of this work is to isolate mARC, XDH1, AAO3, NIA1, SO and ABA3/LOS5 genes in three legume species submitted to salt stress with molybdenum and nitrogen, the growth conditions (T1: control, T2: both molybdenum and nitrogen added, T3: sodium ...
Chaabane, R. (Rahmoune)   +2 more
core   +1 more source

Glutaredoxin GRXS17 associates with the cytosolic iron-sulfur cluster assembly pathway [PDF]

open access: yes, 2016
Cytosolic monothiol glutaredoxins (GRXs) are required in iron-sulfur (Fe-S) cluster delivery and iron sensing in yeast and mammals. In plants, it is unclear whether they have similar functions.
Cammue, Bruno PA   +18 more
core   +2 more sources

Criteria for pot capacity determination [PDF]

open access: yes, 2008
A capacidade de campo ou seu equivalente para culturas em vaso, a capacidade de vaso, é um dado importante para o manejo da irrigação. O objetivo deste trabalho foi determinar, em vasos preenchidos com material de dois solos diferentes (um argiloso e um ...
CASAROLI, Derblai   +1 more
core   +2 more sources

Plant growth regulators induced urease activity in Cucurbita pepo L. cotyledons [PDF]

open access: yes, 2016
This study is aimed to investigate the activity of urease (EC 3.5.1.5, urea amidohydrolase) that catalyzes the hydrolysis of urea in 5-day-old Cucurbita pepo cotyledons subjected to various concentrations of different growth regulators.
Ali, Awatif S., El Shora, Hamed M.
core   +1 more source

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