Nanoparticles (NPs) have emerged as one of the most
innovative and promising application in agriculture. Since plants are
recognized as essential component of all ecosystems, the effects of NPs on
plants may pave a new insight to the ecosystems. Here, uptake and
translocation of superparamagnetic iron oxide NPs (SPIONs), with various
surface charges, on soybean has been probed; in addition, the effects of
SPIONs on variations of chlorophyll, in hydroponic condition, together with
their ability for reduction of iron deficiency chlorosis were explored. We find
that SPIONs, which were entered and translocated in the soybean, increased
chlorophyll levels, with no trace of toxicity. Furthermore, it was found that physicochemical characteristics of the SPIONs had a
crucial role on the enhancement of chlorophyll content in subapical leaves of soybean. The equivalent ratio of chlorophyll a to b,
in all treatments with conventional growth medium iron chelate and SPIONs (as iron source), indicated no significant difference
on the photosynthesis efficiency. Finally, it was observed that the effect of SPIONs on the soybean chlorophyll content may have
influence on both biochemical and enzymatic efficiency in different stages of the photosynthesis reactions.
Nanoparticles (NPs) have emerged as one of the mostinnovative and promising application in agriculture. Since plants arerecognized as essential component of all ecosystems, the effects of NPs onplants may pave a new insight to the ecosystems. Here, uptake andtranslocation of superparamagnetic iron oxide NPs (SPIONs), with varioussurface charges, on soybean has been probed; in addition, the effects ofSPIONs on variations of chlorophyll, in hydroponic condition, together withtheir ability for reduction of iron deficiency chlorosis were explored. We findthat SPIONs, which were entered and translocated in the soybean, increasedchlorophyll levels, with no trace of toxicity. Furthermore, it was found that physicochemical characteristics of the SPIONs had acrucial role on the enhancement of chlorophyll content in subapical leaves of soybean. The equivalent ratio of chlorophyll a to b,in all treatments with conventional growth medium iron chelate and SPIONs (as iron source), indicated no significant differenceon the photosynthesis efficiency. Finally, it was observed that the effect of SPIONs on the soybean chlorophyll content may haveinfluence on both biochemical and enzymatic efficiency in different stages of the photosynthesis reactions.
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