『Abstract
Arsenic (As)-contaminated irrigation water is responsible for
high As levels in soils and crops in many parts of the world,
particularly in the Bengal Delta, Bangladesh and West Bengal,
India. While arbuscular mycorrhizal (AM) fungi markedly improve
phosphorus (P) uptake, they can also alleviate metal toxicity.
In this study, the effects of superphosphate and inoculation with
the AM fungus Glomus mosseae on P and As uptake of lentil
were investigated. Plant height, shoot dry weight, shoot/root
P concentration, and shoot P content increased due to mycorrhizal
inoculation. However, As concentration in roots/shoots and root
As content were reduced, plant height, shoot dry weight, shoot/root
P concentration/content, and root As concentration and content
increased due to superphosphate application. Root P concentration
decreased with increasing As concentration. It was apparent that
As concentration and content in shoots/roots increased with increasing
As concentration in irrigation water. Superphosphate interaction
with G. mosseae reduced the role of mycorrhizal infection
in terms of enhancing P nutrition and reducing uptake of potentially
toxic As into plant parts. The role and relationship of mycorrhizal
in respect of P nutrition and As remediation efficiency in plant
parts was established. In conclusion, it was worth alluding to
that lentil with AM fungal inoculation can reduce As uptake and
improve P nutrition. However, in retrospect superphosphate increased
P and As uptake and decreased the role of the mycorrhizal association.
This resulted in stimulating increased P uptake while decreasing
As uptake in lentil.
Keywords: Arbuscular mycorrhizas; Arsenate; Arsenic; Glomus
mosseae; Lentil; Phosphorus uptake; Superphosphate』
1. Introduction
2. Materials and methods
2.1. Growing plants
2.2. Measurements
2.3. Chemical analysis
2.4. Mycorrhozal infection
3. Experimental design and statistical analysis
4. Results
4.1. Effect on growth parameters of lentil
5. As and P concentration and off-take
6. Effect of superphosphate and arsenic on mycorrhizal infection
7. Discussion
8. Conclusion
Acknowledgments
Reference