Please can anyone explain how organic pollutants affect seed germination and seedling growth parameters?
Is there any mechanism?
Please provide the suitable references.
Thanks in advance
With regard
Central European Journal of Biology
February 2012, Volume 7, Issue 1, pp 159–166| Cite as
Effect of organic pollutant treatment on the growth of pea and maize seedlings
- Abstract : This study confirmed the considerable effect of polycyclic aromatic hydrocarbon fluoranthene (FLT; 0.01, 0.1, 1, 4 and 7 mg/l) exposure on the germination of seeds, growth and root morphology of seedlings in Zea mays and Pisum sativum. Seed germination was significantly inhibited at FLT≥0.01 mg/l in maize and at ≥1 mg/l in pea. The amount of released ethylene after 3 days of germination was significantly increased in both species at FLT≥0.1 mg/l. After 7 days of seedling cultivation a significant decrease in the dry weight of roots and shoots occurred in maize at FLT≥0.1 mg/l while in pea similar effect was observed at ≥1 mg/l. The total length of primary and lateral roots was significantly reduced by FLT≥1 mg/l in maize and by 4 and 7 mg/l in pea. The length of the non-branched part of the primary root was significantly reduced by FLT≥0.1 mg/l in maize and ≥0.01 mg/l in pea. In both species the number of lateral roots was significantly increased at FLT≤1 mg/l and inhibited at concentrations of 4 and 7 mg/l. Fluoranthene content in roots and shoots of both species positively correlated with the FLT treatment.
Central European Journal of Biology
February 2012, Volume 7, Issue 1, pp 159–166| Cite as
Effect of organic pollutant treatment on the growth of pea and maize seedlings
- Abstract : This study confirmed the considerable effect of polycyclic aromatic hydrocarbon fluoranthene (FLT; 0.01, 0.1, 1, 4 and 7 mg/l) exposure on the germination of seeds, growth and root morphology of seedlings in Zea mays and Pisum sativum. Seed germination was significantly inhibited at FLT≥0.01 mg/l in maize and at ≥1 mg/l in pea. The amount of released ethylene after 3 days of germination was significantly increased in both species at FLT≥0.1 mg/l. After 7 days of seedling cultivation a significant decrease in the dry weight of roots and shoots occurred in maize at FLT≥0.1 mg/l while in pea similar effect was observed at ≥1 mg/l. The total length of primary and lateral roots was significantly reduced by FLT≥1 mg/l in maize and by 4 and 7 mg/l in pea. The length of the non-branched part of the primary root was significantly reduced by FLT≥0.1 mg/l in maize and ≥0.01 mg/l in pea. In both species the number of lateral roots was significantly increased at FLT≤1 mg/l and inhibited at concentrations of 4 and 7 mg/l. Fluoranthene content in roots and shoots of both species positively correlated with the FLT treatment.
Dear Gaurav Saxena,
Please have a look at this useful link and PDF attachments.
https://www.researchgate.net/publication/241279633_Effect_of_organic_pollutant_treatment_on_the_growth_of_pea_and_maize_seedlings
Good luck
Organic pollutants may alter the production of phytoharmones (Mok & Mok, 2001; Kummerova et al. 2010). Changes in the levels of enzymes that participate in phytochormone biosynthesis and regulation of the enzymes concerned with degradation or deactivation of xenobiotics (Vaseva-Gemisheva et al. 2005).
See:
Effect of organic pollutant treatment on the growth of pea and maize seedlings, Central European Journal of Biology, February 2012, Volume 7, Issue 1, pp 159–166,
Effect of organic contaminants on seed germination of
Lolium multiflorum in soil. Biology and Medicine, Vol. 1 (1): 28–34, 2009.
The effects depend on the specific chemical and/or concentration :)
- Badges
- Science topic
- Similar topics
- Biological Science
- Biota
- Eukaryota
- Viridiplantae
- Streptophyta
- Plants