The study aims to understand the effect of UV exclusion and arbuscular mycorrhizal fungi (AMF) inoculation on the photosynthetic parameters of soybean. The study was conducted in nursery bags and plants were grown under iron mesh covered with UV cut-off filters. The plants grown under the exclusion of UV with AMF inoculation (I) showed higher photosynthetic pigments, carbonic anhydrase activity, reduced internal CO2 concentration, enhanced transpiration rate, and stomatal conductance as well as improved photosynthetic rate over uninoculated plants. Moreover, -UVB+I and -UVAB+I plants exhibited an increased performance index, the activity of the water-splitting complex on the donor side of PSII, and the concentration of active PSII reaction centers per excited cross-section. Overall, UV-excluded and AMF-inoculated plants showed the highest quantum yield of PSII and rate of photosynthesis. Our study will pave the way for future investigation to identify the possible role of UV exclusion and AMF in improving the photosynthetic performance for better yield of soybean.

Department of Botany SBN Government PG College 451551 Barwani India

Department of Plant Physiology Faculty of Agrobiology and Food Resource Slovak University of Agriculture 94976 Nitra Slovakia

ICAR Indian Institute of Soybean Research Khandwa Road 452001 Indore India

School of Life Sciences Devi Ahilya Vishwavidyalaya Khandwa Road 452001 Indore India

Shri Vaishnav Institute of Science Ujjain Road 453111 Indore India

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