Influences of arbuscular mycorrhizal fungus Glomus mosseae on growth and nutrition of lentil irrigated with arsenic contaminated water

F. R. S. Ahmed, Kenneth Stuart Killham, Ian James Alexander

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

Arsenic (As) contamination of irrigation water represents a major constraint to Bangladesh agriculture. While arbuscular mycorrhizal (AM) fungi have their most significant effect on P uptake, they have also been shown to alleviate metal toxicity to the host plant. This study examined the effects of As and inoculation with an AM fungus, Glomus mosseae, on lentil (Lens culinaris L. cv. Titore). Plants were grown with and without AM inoculum for 9 weeks in a sand and terra green mixture 50:50 v/v and watered with five levels of As (0, 1, 2, 5, 10 mg As L-1 arsenate). Inoculum of Rhizobium leguminosarum b.v. Viceae strain 3841 was applied to all plants. Plants were fed with modified Hoagland solution (1/10 N of a full-strength solution and without P). Plant height, leaf number, pod number, plant biomass and shoot and root P concentration/offtake increased significantly due to mycorrhizal infection. Plant height, leaf/ pod number, plant biomass, root length, shoot P concentration/offtake, root P offtake and mycorrhizal infection decreased significantly with increasing As concentration. However, mycorrhizal inoculation reduced As concentration in roots and shoots. This study shows that growing lentil with compatible AM inoculum can minimise As toxicity and increase growth and P uptake.

Original languageEnglish
Pages (from-to)33-41
Number of pages8
JournalPlant and Soil
Volume283
DOIs
Publication statusPublished - 2006

Keywords

  • arbuscular mycorrhizas
  • arsenate
  • arsenic
  • Glomus mosseae
  • lentil
  • phosphorus uptake
  • HEAVY-METAL RESISTANCE
  • SILENE-VULGARIS
  • DRINKING-WATER
  • WEST-BENGAL
  • SANDY SOIL
  • TOXICITY
  • RICE
  • BANGLADESH
  • TOLERANCE
  • NICKEL

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