Abstract
The use of colloidal solutions of metals as micronutrients enhances plant resistance to unfavorable environmental conditions and ensures high yields of food crops. The purpose of the study was a comparative evaluation of presowing treatment with nanomolybdenum and microbiological preparation impact upon the development of adaptive responses in chickpea plants. Oxidative processes did not develop in all variants of the experiment but in variants treated with microbial preparation, and joint action of microbial and nanopreparations even declined, as evidenced by the reduction of thiobarbituric acid reactive substances in photosynthetic tissues by 15 %. The activity of superoxide dismutase increased (by 15 %) in variant “nanomolybdenum” and joint action “microbial + nanomolybdenum,” but it decreased by 20 % in variants with microbial preparation treatment. The same dependence was observed in changes of catalase activity. Antioxidant status factor, which takes into account the ratio of antioxidant to pro-oxidant, was the highest in variants with joint action of microbial preparation and nanomolybdenum (0.7), the lowest in variants with microbial treatment only (0.1). Thus, the results show that the action of nanoparticles of molybdenum activated antioxidant enzymes and decreased oxidative processes, thus promoting adaptation of plants.
Highlights
Plants contain molybdenum in small quantities (0.001–0.1 mg% in terms of dry matter), but it has an important role in phosphorus and protein metabolism
Probability of the difference between the Results and Discussion Analysis of the results showed that oxidative processes are not developed in all variants of the experiment, and in variants with action of microbial preparation, but joint action of nanomolybdenum and microbial preparation caused decrease in their activity, as evidenced by the reduction of thiobarbituric acid reactive substances (TBARS) in photosynthetic tissues by 15 % (Fig. 1)
Analysis of the results showed that superoxide dismutase (SOD) activity increased in variants with nanomolybdenum action and joint action of nanomolybdenum and microbial preparation, but in variants with only microbial preparation, it decreased by 20 % (Fig. 2)
Summary
Plants contain molybdenum in small quantities (0.001–0.1 mg% in terms of dry matter), but it has an important role in phosphorus and protein metabolism. Molybdenum is present in all organs, part of the 20 enzymes (aldehyde oxidases, hydrogenases, nitrate reductase) that catalyze the transition of nitrates into nitrites. It should be noted for its role in the metabolism of legumes because molybdenum is involved in fixing of molecular nitrogen by nodule bacteria of the genus Rhizobium [1]. Formation of legume-rhizobial symbiosis includes a number of stages, where the enzyme complex, nitrogenase, is synthesized. It catalyzes the reduction of molecular nitrogen from the atmosphere [2]. This complex consists of two enzymes: the actual
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
