While lateral roots comprise the bulk of root length, axial roots function as a scaffold determining the distribution of these laterals.
Tag - nitrate
Alex Assiry
Improving roots for crops could improve habitats for wildlife
New research finds that root capturing more nutrients could help wildlife breathe many miles away.
Alun Salt
A key protein may help trigger germination in Arabidopsis seeds
Seed germination is a critical step in the life cycle of flowering plants. Since seeds contain limited reserves, seed germination has to be tightly regulated to ensure that germination takes place in a suitable...
The suitability of Brachypodium distachyon for the study of ammonium stress in cereals
Most plants acquire nitrogen from the soil in the form of nitrate (NO3−) or ammonium (NH4+). Ammonium-based nutrition is gaining interest because it helps to avoid environmental concerns associated with nitrate...
William Salter
Nitrate nutrition improves energy efficiency under hypoxic stress
Plants take up and assimilate nitrogen (N) in the form of nitrate (NO3–) or ammonium (NH4+), or a combination of both. When oxygen availability is reduced (hypoxia), plants need to generate energy to survive and...
Phene interactions determine nutrient capture in common bean
Rangarajan et al. employ the functional–structural model SimRoot to explore how interactions among architectural phenes in common bean, Phaseolus vulgaris (Fabaceae) determine the acquisition of phosphate and nitrate...
Carbon stores support efficient nitrate use during regrowth of perennial ryegrass
Plant regrowth in response to defoliation relies on efficient nitrogen use. Roche et al. find that remobilisation of water soluble carbohydrate stores in leaves of perennial ryegrass (Lolium perenne) is coordinated with...
botanyone
The role of nitrogen in plant defence
Plants need nitrogen (N) for growth, development and defence against abiotic and biotic stresses. The widespread use of artificial N fertilisers and the agricultural impact of N nutrition on disease development have...
Elevated CO2 reduces nitrate inhibition of N2 fixation in Pisum
Additional carbohydrate supply resulting from enhanced photosynthesis under predicted future elevated CO2 is likely to increase symbiotic nitrogen fixation in legumes. Butterly et al. use free-air CO2 enrichment (FACE)...
Provision of nitrogen as ammonium rather than nitrate increases silicon uptake in sugarcane
Silicon (Si) is important in mitigating abiotic and biotic plant stresses, yet many agricultural soils, such as those of the rainfed production areas of the South African sugar industry, are deficient in plant-available...
AoBPLANTS
Nitrate uptake modelling in plants: root activity
Using a thermodynamic flow–force interpretation of nitrate uptake isotherms, Malagoli and Le Deunff develop a functional– structural model to predict N uptake in winter oilseed rape, Brassica napus. The structural...
Why small seeds require light to germinate
The influence of light on germination was much stronger in smaller than in larger seeds.
AJ Cann
Auxin distribution and nitrate in rice roots
A study of rice cultivars with differing responsiveness to nitrate finds that initiation of lateral roots is only enhanced with higher responsiveness.
N-source preference in plants (Viewpoint)
Plants can utilize two major forms of inorganic nitrogen, nitrate (NO3–) and ammonium (NH4+), with some species appearing to ‘prefer’ one form over another, under certain conditions. Soil-N speciation has been shown to...
