Salicylic Acid Alleviates the Copper Toxicity in Zinnia elegans
Journal Title: Journal of Ornamental and Horticultural Plants - Year 2015, Vol 5, Issue 1
Abstract
Salicylic acid (SA) plays a key role in plant disease resistance and hyper-sensitive cell death but is also implicated in hardening responses to abiotic stress. The aim of this study is to examine the effects of salicylic acid on the growth, eco-physiological and biochemical characteristics in Zinnia elegans plant exposed to copper stress. Effects of copper (Cu) on biomass, root length and shoot height and Cu uptake are also discussed. This experiment was arranged as a factorial experiment based on completely randomized design with four replications in greenhouse conditions. The experimental treatment consisted of four levels of Cu (0, 100, 200, and 400 mg/kg in potted soil) and three levels of salicylic acid (0, 1, 2 mM) as foliar spray and chelate to soil. Results showed that with increasing levels of copper, reductions in shoot and root growth, leaf area and leaf number were statistically significant (p<0.01). Analysis of some biochemical indices (chlorophyll content) and eco-physiological indices such as primary florescence chlorophyll (Fo), ratio of variable chlorophyll to maximum (Fv/Fm) in treated plants were statistically significant (p<0.01). The results showed that copper accumulation was higher in the roots than shoots. The Fluo-rescence measurements showed that primary florescence chlorophyll (Fo) was increased but maximum florescence chlorophyll (Fm) was decreased progressively with increasing Cu. Salicylic acid significantly increased root and shoot growth and chlorophyll content in copper stressed plants. SA applying as chelate 2 mM also showed an increased level of tolerance toward high Cu concentrations. The results support the conclusion that SA alleviates Cu toxicity.
Authors and Affiliations
Maryam Afrousheh, Ali Tehranifar, Mahmud Shoor, Vahid Reza Safari
Keywords
Related Articles
- EP ID EP164356
- DOI -
- Views 103
- Downloads 0
Comparison of Different Pot Mixtures Containing Perlite on Growth and Morphological Characteristics of Pothos (Scindapsus aureum L.)
To Select an appropriate medium for the growth of plant is one of the problems of most greenhouse owners in production of pot ornamentals. So, current research was conducted to evaluate effect of some available med...
[b]Increasing Shelf Life and Maintaining Quality of Mango by Postharvest Treatments and Packaging Technique[/b]
This experiment was carried out to increase the shelf life and maintaining the quality of mango (Mangifera indica) fruits. There were two factors. Factor A: postharvest treatments with six levels (1. untr...
Effect of Agar and Different Culture Media on the Micropropagation of Rosa hybrida cv.’Black Baccara’
In vitro propagation of plant has played a very important role in rapid multiplication of cultivars with desirable traits and production of healthy and disease-free plants. In the present investigation, the object...
Encapsulation of Protocorm of Cymbidium bicolor Lindl. for Short-Term Storage and Germplasm Exchange
The present study describes the encapsulation of protocorm of Cymbidium bicolor Lindl. from 60 days-old in seed cultures for short- term conservation and propagation. Various concentrations and combinations of gell...
[b]Character Association in Improved Mulberry Genotypes Exhibiting Delayed Leaf Senescence [/b]
Mulberry (Morus spp.) is a perennial tree cultivated for its foliage to rear the domesticated silkworm, Bombyx mori L. Mulberry has improved through conventional breeding in general aims to improve the quantity and quali...