Stimulation of root growth and enhanced nitrogenous metabolite content in habanero pepper (Capsicum chinense Jacq.) treated with a d-amino acid mixture
| Autor: | María de Lourdes Miranda-Ham, Angélica Anahi Serralta-Interian, Ileana Echevarría-Machado |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Agonist biology medicine.drug_class Metabolite Lateral root food and beverages chemistry.chemical_element Stimulation Plant Science biology.organism_classification 01 natural sciences Nitrogen Capsicum chinense 03 medical and health sciences chemistry.chemical_compound Horticulture 030104 developmental biology Nitrate chemistry Pepper medicine Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Theoretical and Experimental Plant Physiology. 32:31-47 |
| ISSN: | 2197-0025 |
| Popis: | d-amino acids (d-AAs) can be found in soils, and recent studies indicate that plants exhibit multiple behaviors in response to the type of d-AAs present. d-Ala and d-Ser have the greatest adverse effects on plant growth and development, however the role of d-Ala as a source of nitrogen (N) and d-Ser as an agonist of glutamate receptors (GLRs) in plants have been proposed. Though, there is very little knowledge about the role of d-AAs in regulating plant growth. In this paper we report the effect of d-AAs on the root growth of habanero pepper (Capsicum chinense Jacq.). It was found that the primary root (PR) was more sensitive to d-Asp and d-Ala, which caused a complete halt in the growth of the organ. The lateral root (LR) number increased following the application of d-Leu either individually or in a mixture with d-Val and d-Cys. Also, d-Val increased the leaf area. Overall, the three d-AAs acted synergistically to increase the total radical length. The mixture of these three d-AAs increased the concentration of nitrate, total amino acids, and protein. These results suggest that d-Val, d-Leu, and d-Cys regulate cellular metabolism and stimulate root growth. Here we provide important information to understand the role of d-AAs in the regulation of root plant growth. |
| Databáze: | OpenAIRE |
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