3 research outputs found
Study of effect of arbuscular mycorrhiza (Glomus intraradices) fungus on wheat under nickel stress
ArticleIn many regions of the world soils are contaminated with heavy metals and therefore
restricted in their use. For instance, the absorption of nickel (Ni) in the tissue
of plants increase
the plant’s metabolism and cause physiological disorders or even death. Arbuscular mycorrhizal
fungi are known to enhance the tolerance of host plants to abiotic and biotic stress. Thus, we
investigated the potential of the arbuscular m
ycorrhizal fungi
Glomus intraradices
to mitigate
deleterious effects of Ni in wheat. The experiment was conducted using four levels of Ni (0, 60,
120 and 180
mg
per
kg of soil) and two levels of mycorrhizal fungi application (with and without
Glomus intrar
adices
). Nickel stress significantly decreased seed number per spike, thousand
-
seed
weight, seed yield per plant, concentration of chlorophyll a and b. At the same time, we found
increased catalase (CAT) enzyme activity and dityrosine (DT) treatments.
Mycorrhizal fungi
application attenuated Ni effects, i.e. fungal presence increased seed number per spike, thousand
-
seed weight, chlorophyll a and b. Furthermore mycorrhizal fungi application reduce CAT enzyme
activity and DT. In general, our results sugge
st that mycorrhizal fungi application reduces harmful
effects of Ni stress in wheat
Investigating the probable consequences of super absorbent polymer and mycorrhizal fungi to reduce detrimental effects of lead on wheat (Triticum aestivum L.)
ArticleIn many parts of the world, agricultural use of soils is restricted due to heavy metal
contamination. Absorption of heavy metals, such as (Pb), in the tissue of plants increases the
plant’s metabolism and causes physiological disorders or even death. In order to study the
potential of super absorbent polymers (SAP) and mycorrhiza fungi application to mitigate adverse
effects of lead (Pb) on wheat, a greenhouse experiment was conducted. The experiment was setup
as a completely randomized design, with two treatments arranged in a factorial scheme with three
levels of lead (0, 100 and 200 mg per kg soil) and four levels of SAP and mycorrhiza fungi
application (without SAP and mycorrhiza fungi application, SAP application alone, mycorrhiza
fungi application alone, SAP and mycorrhiza fungi application combined). The results showed
that Pb significantly affected all parameters measured of wheat. The Pb-contamination caused a
significantly decreasing in plant height, total dry weight per plant and total chlorophyll contents.
And also, the results indicated that the combined use of superabsorbent and mycorrhiza reduced
the amount of superoxide dismutase enzyme. As well as, our results show that the application of
super absorbent polymer and mycorrhizal fungi seems to be a promising path to reduce
detrimental effects of heavy metal pollution of agricultural soils on plant performance.http://dx.doi.org/10.15159/ar.18.00