Enantiomeric separation of Free L- and D-Amino Acids in Hydrolyzed Protein Fertilizers by Capillary Electrophoresis Tandem Mass Spectrometry

L-amino acids play a part in many physiological processes in plants. However, while L-amino acids are biologically active, the metabolism role of D-amino acids in plants is still doubtful, and the few existing studies on this topic indicate undesired agronomic effects. The enantiomeric separation of free amino acids contained in different hydrolyzed protein fertilizers used as biostimulants was achieved. Two capillary electrophoresis-tandem mass spectrometry (CE-MS2) methods were optimized i...

Terra-Sorb Foliar®, an amino acid based-biostimulant, mitigates the effects of glyphosate by triggering defence responses in glyphosate-resistant soybeans

The production of glyphosate-resistant (GR) soybeans continues to increase, as does the frequency of use of the herbicide glyphosate. Although largely resistant to glyphosate, GR soybean plants can still suffer adverse effects caused by the application of the herbicide particularly under stress conditions, risking limitations both on crop production and on the quality of the soybean crop. Glyphosate-induced effects on GR soybeans include decreased chlorophyll contents, lower photosynthesis a...

1st World Congress on the use of Biostimulants in Agriculture

6th International Table grape Symposium

Terra-Sorb® is a commercial product based on a mixture of all biologically active L-amino acids which proceed from enzymatic hydrolysis for agriculture use by foliar application (Bioiberica, 2009). Spain is one of the main table grape producers in Europe with excellent cultivars seeded and seedless. Among these, ‘Crimson’ and ‘Autumn Royal’ are within the most cultivated and exported.Although application of amino acids has been evaluated in some crops, there is no scientific informa...

A DIGE proteomic analysis of wheat flag leave treated with Terra-Sorb foliar, a free amino acid-based biostimulator

The flag leaf is the most important source of carbohydrate during wheat kernel filling. Around a 75% of all sugars stored in the kernel come from carbon fixed by this leaf. Previous studies have shown that application of Terra-Sorb ® foliar, an L-α-amino acid-based product from enzymatic hydrolysis with a high ratio of free-to-total amino acids, increases plant photosynthetic activity and chlorophyll content, promotes rapid recovery from stress and improves fruit set. In this work,...