Back to Search
Start Over
Melatonin modulates photosynthesis, redox status, and elemental composition to promote growth of Brassica juncea—a dose-dependent effect
- Source :
- Protoplasma. 257:1685-1700
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- Melatonin (MEL) is an antioxidant molecule, present throughout plant kingdom, animals, and microbes. It is a well-known free radical scavenger and modulates growth and development in plants against various abiotic and biotic stresses. The present study was done to investigate the role of MEL as a foliar spray on the morphological, physiological, and biochemical parameters in Brassica juncea cv. Varuna. Five different doses (10, 20, 30, 40, or 50 μM) of MEL were applied as foliar spray to the leaf of plant at 25 days after sowing (DAS) and continued up to 30 DAS once in a day. The plants were sampled at 30, 45, and 60 DAS to assess various parameters. The present results indicate that most of the parameters, i.e., growth, photosynthetic, nutrients, and enzyme activities increased in a concentration dependent manner. MEL application reduced the accumulation of reactive oxygen species (ROS) by enhancing the antioxidant enzyme activities. Microscopic examinations further revealed a significant increase in the size of the stomatal aperture in the presence of MEL. Out of the various concentrations tested, 40 μM of MEL proved best and can be used for further studies.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Antioxidant
medicine.medical_treatment
Brassica
Plant Science
Photosynthesis
Nitrate reductase
01 natural sciences
Antioxidants
Melatonin
03 medical and health sciences
hemic and lymphatic diseases
medicine
Abiotic component
chemistry.chemical_classification
Reactive oxygen species
biology
Chemistry
fungi
food and beverages
Cell Biology
General Medicine
biology.organism_classification
Free radical scavenger
Horticulture
030104 developmental biology
Reactive Oxygen Species
Oxidation-Reduction
Mustard Plant
010606 plant biology & botany
medicine.drug
Subjects
Details
- ISSN :
- 16156102 and 0033183X
- Volume :
- 257
- Database :
- OpenAIRE
- Journal :
- Protoplasma
- Accession number :
- edsair.doi.dedup.....ad343060bc3a1391a6b896646eeb96d8