Results 11 to 20 of about 1,899 (192)

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

open access: yesBrazilian Archives of Biology and Technology, 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.
Liliane Santos Camargos   +3 more
doaj   +4 more sources

Effect of organic fertiliser residues from rice production on nitrogen fixation of soya (Glycine max L. Merrill), Chiang Mai 60 variety [PDF]

open access: yesMaejo International Journal of Science and Technology, 2013
A field study was undertaken on the residual effect of organic fertilisers applied to the preceding rice cropping on nitrogen fixation of soya in a rice-soya cropping system.
Nattida Luangmaka
doaj   +2 more sources

Crystal Structure of Allantoinase from Escherichia coli BL21: A Molecular Insight into a Role of the Active Site Loops in Catalysis [PDF]

open access: yesMolecules, 2023
Allantoinase (ALLase; EC 3.5.2.5) possesses a binuclear metal center in which two metal ions are bridged by a posttranslationally carbamylated lysine. ALLase acts as a key enzyme for the biogenesis and degradation of ureides by catalyzing the conversion ...
Yen-Hua Huang   +7 more
doaj   +2 more sources

Physiological Responses of Crotalaria spp. to the Presence of High Aluminum Availability in the Soil [PDF]

open access: yesPlants
Brazilian soils are predominantly rich in aluminum, which becomes mobile at pH < 5, affecting sensitive plants; however, some species have developed aluminum tolerance mechanisms.
Beatriz Silvério dos Santos   +4 more
doaj   +2 more sources

Allantoate Amidohydrolase OsAAH is Essential for Preharvest Sprouting Resistance in Rice [PDF]

open access: yesRice
Preharvest sprouting (PHS) is an undesirable trait that decreases yield and quality in rice production. Understanding the genes and regulatory mechanisms underlying PHS is of great significance for breeding PHS-resistant rice.
Ting Xie   +10 more
doaj   +2 more sources

Metabolic Responses to Excess Manganese in Legumes: Variations in Nitrogen Compounds in Canavalia ensiformis (L.) DC and Cajanus cajan (L.) Millsp

open access: yesLegume Science
Manganese (Mn) is crucial as a trace element for plant metabolism, but high concentrations in soil can induce symptoms of toxicity. This study aimed to evaluate the metabolism of nitrogen compounds and biomass production in Canavalia ensiformis and ...
Thalita Fischer Santini Mendes   +4 more
doaj   +2 more sources

Biochemical and Molecular Characterization of PvNTD2, a Nucleotidase Highly Expressed in Nodules from Phaseolus vulgaris [PDF]

open access: yesPlants, 2020
Nucleotides are molecules of great importance in plant physiology. In addition to being elementary units of the genetic material, nucleotides are involved in bio-energetic processes, play a role as cofactors, and are also components of secondary ...
Gregorio Galvez-Valdivieso   +6 more
doaj   +2 more sources

A study on nickel application methods for optimizing soybean growth [PDF]

open access: yesScientific Reports
Fertilization with nickel (Ni) can positively affect plant development due to the role of this micronutrient in nitrogen (N) metabolism, namely, through urease and NiFe-hydrogenase.
Bruna Wurr Rodak   +8 more
doaj   +2 more sources

Inhibition of rhizobial cheaters by the host Medicago truncatula involves repression of symbiotic functions and induction of defense. [PDF]

open access: yesNew Phytol
Summary In symbiotic plant–microbe interactions, the host invests considerable amounts of resources in the microbial partner. If the microbe does not reciprocate with a comparable symbiotic benefit, it is regarded as a cheater. The host responds to cheaters with negative feedback mechanisms (sanctions) to prevent fitness deficits resulting from being ...
Chen M   +8 more
europepmc   +2 more sources

Drought Stress Modifies the Source-Sink Dynamics of Nitrogen-Fixing Soybean Plants Prioritizing Roots and Nodules. [PDF]

open access: yesPhysiol Plant
ABSTRACT Soybean plants are one of the most cultivated legume crops worldwide. Their ability to establish nitrogen‐fixing symbiosis with rhizobium bacteria allows the reduction of molecular nitrogen to ammonium, contributing to a reduction in the dependence on nitrogen fertilizers.
Rubia MI, Larrainzar E, Arrese-Igor C.
europepmc   +2 more sources

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