Trichoderma spp. alleviate phytotoxicity in lettuce plants (Lactuca sativa L.) irrigated with arsenic-contaminated water

The influence of two strains of Trichoderma (T. harzianum strain T22 and T. atroviride strain P1) on the growth of lettuce plants (Lactuca sativa L.) irrigated with As-contaminated water, and their effect on the uptake and accumulation of the contaminant in the plant roots and leaves, were studied....

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Bibliographic Details
Published in:Journal of plant physiology 2014-09, Vol.171 (15), p.1378-1384
Main Authors: Caporale, Antonio G., Sommella, Alessia, Lorito, Matteo, Lombardi, Nadia, Azam, Shah M.G.G., Pigna, Massimo, Ruocco, Michelina
Format: Article
Language:English
Subjects:
Arsenic
Arsenic - metabolism
Arsenic - toxicity
Bio-fertilization
Biomass
Inoculation
Lactuca - drug effects
Lactuca - growth & development
Lactuca - microbiology
Lactuca sativa
Leaves
Lettuces
PGPF
Photosynthesis
Photosynthesis - drug effects
Physiology
Phytotoxicity
Plant Leaves - drug effects
Plant Leaves - growth & development
Plant Leaves - microbiology
Plant Roots - drug effects
Plant Roots - growth & development
Plant Roots - microbiology
Plants (organisms)
Soil - chemistry
Strain
Stress, Physiological
Trichoderma
Trichoderma - physiology
Water - chemistry
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Summary:The influence of two strains of Trichoderma (T. harzianum strain T22 and T. atroviride strain P1) on the growth of lettuce plants (Lactuca sativa L.) irrigated with As-contaminated water, and their effect on the uptake and accumulation of the contaminant in the plant roots and leaves, were studied. Accumulation of this non-essential element occurred mainly into the root system and reduced both biomass development and net photosynthesis rate (while altering the plant P status). Plant growth-promoting fungi (PGPF) of both Trichoderma species alleviated, at least in part, the phytotoxicity of As, essentially by decreasing its accumulation in the tissues and enhancing plant growth, P status and net photosynthesis rate. Our results indicate that inoculation of lettuce with selected Trichoderma strains may be helpful, beside the classical biocontrol application, in alleviating abiotic stresses such as that caused by irrigation with As-contaminated water, and in reducing the concentration of this metalloid in the edible part of the plant.
ISSN:0176-1617
1618-1328
DOI:10.1016/j.jplph.2014.05.011