The Effects of Nitrate and Phosphate Deficiencies on Certain Biochemical Metabolites in Tomato (Lycopersicon esculentum Mill. c.v. Urbana V.F.) Plant
Journal Title: Журнал ÑтреÑÑ-физиологии и биохимии - Year 2013, Vol 9, Issue 2
Abstract
Nitrogen (N) and phosphorus (P) are two important macronutrients with diverse functions in plants. Therefore, the effects of their deficiencies on different physiological and biochemical characteristics especially in crops have always been investigated. In this study, the effects of nitrate and phosphate deficiencies in two levels of 25% and 35% deficiencies compared to control plants were studied in [i]Lycopersicon esculentum[/i] Mill. Results were analyzed statistically that showed a significant increase of root soluble and insoluble sugars and peroxidase activity and a significant decrease of root soluble proteins in both levels of nitrate and phosphate deficiencies which have less been studied. Furthermore, reverse relationships between soluble sugars and soluble proteins (r[sup]2[/sup]=0.996) and between insoluble sugars and soluble proteins (r[sup]2[/sup]=1) under nitrate deficiencies were developed. Also, by decreasing nitrate, β-caroten and xanthophyll contents decreased. By decreasing phosphate, concentration of β-caroten diminished but xanthophyll contents were not affected significantly. On the whole, biochemical characteristics were affected more in nitrate-deficient treatments in tomato plants than those of control plants.
Authors and Affiliations
R. Khavari-Nejad, F. Najafi, C. Tofighi
Keywords
Related Articles
- EP ID EP120223
- DOI -
- Views 107
- Downloads 0
Physiological and biochemical responses of two maize cultivars (Corralejo and Tlaltizapon) under salt stress
The aim of the present work was to study the effect of different concentrations of NaCl (0, 50 and 100mM) in two cultivars of maize (Corralejo and Tlaltizapan), on their nutritional and photosynthetic comportment. The me...
Genotypic Variation for Salinity Tolerance in Sorghum (Sorghum bicolor (L.) Moench) Genotypes at Early Growth Stages
Sorghum ([i]Sorghum bicolor[/i] L. Moench) is the fifth most economically important crop among cereals in the world. Salinity is an abiotic factor which reduces productivity of sorghum. Exploiting genetic variability to...
Evaluation of Chlorophyll Fluorescence and Biochemical Traits of Lettuce under Drought Stress and Super Absorbent or Bentonite Application
The effects of two superabsorbents (natural-bentonite) and (synthetic-A 200) on the chlorophyll fluorescence index, proline accumulation, phenolic compounds, antioxidant activity and total carbohydrate in lettuce (Lactuc...
The Forecasting of Adaptation Potential of Herbaceous Perennials
This work investigates the problem of the ecobiomorph productive features formation of perennial herbs Ranunculaceae family forecasting on the basis of quantitative connections of species parameters with the leading geom...
A WIDE DISTRIBUTION OF A NEW VRN-B1c ALLELE OF WHEAT TRITICUM AESTIVUM L. IN RUSSIA, UKRAINE AND ADJACENT REGIONS: A LINK WITH THE HEADING TIME AND ADAPTIVE POTENTIAL