Tarbiat Modares University Journal of Agricultural Science and Technology 1680-7073 25 2 2023 02 01 Growth and Carbohydrate Compositions of Three Gossypium Species Inoculated with Rhizophagus intraradices under Salinity Stress رشد و ترکیبات کربوهیدراتی سه گونه Gossypium تلقیح شده با Rhizophagus intraradices در تنش شوری 427 442 16750 10.52547/jast.25.2.427 EN E. Moghiseh Department of Biology, Faculty of Science, Islamic Azad University, Gorgan Branch, Gorgn, Islamic Republic of Iran. E. Faghani Department of Agronomy, Cotton Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Gorgan, Islamic Republic of Iran. 0000-0002-9343-6342 S. Shokravi Department of Biology, Faculty of Science, Islamic Azad University, Gorgan Branch, Gorgn, Islamic Republic of Iran. M. Kolahi Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Islamic Republic of Iran. Journal Article <span>Expansion of salt stress in cultivable fields prevents plant physiological functions and reduces crop yield. Arbuscular Mycorrhizal Fungi (AMF), as a bio-amelioration of salt stress, protects cellular osmosis via disaccharide and polysaccharide metabolism changes. In this study, three Gossypium </span><span>species</span><span> (i.e., G. hirsutum, G. barbadense, and G. herbaceum)</span><span> colonized with </span><span>Rhizophagus intraradices </span><span>[with AMF </span><span>and without </span><span>AMF] were cultivated under saline irrigation treatments (ECe< 4 Ds m^-1= S0, 8-9= S1, and 12-13= S2) as a factorial experiment. Salinity treatments were initiated at flowering. Generally, according to physiological traits, </span><span>[+AMF] colonized with</span><span> G. barbadense</span><span> was more tolerant in exposure to 12-13 dS m^-1salinity, while G. hirsutum with </span><span>[+AMF] was just tolerant until </span><span>8-9 dS m^-1. This is because, the highest and the least leaf area were observed in G. barbadense </span><span>[+AMF] </span><span>under 8-9 and 12-13 dS m^-1, respectively. In 12-13 dS m^-1, the highest root volume, root dry weight, seed weight, and fiber weight were obtained in G. barbadense </span><span>[+AMF]. Moreover, the highest sugar content in root and leaves and </span><span>the highest starch content of</span><span> root, leaves, and seed cotyledon </span><span>were observed </span><span>in </span><span>G. barbadense</span> <span>[+AMF] </span><span>under 12-13 dS m^-1treatment.</span><span> Under </span><span>8-9 dS.m^-1salinity, the highest starch,</span><span> Sucrose Phosphate Synthase (SPS)</span> <span>and Sucrose Phosphatase (SP) enzyme activities </span><span>were</span><span> in</span><span> roots of G. barbadense </span><span>[+AMF]. </span><span>The present study suggests that despite dramatic physiological alterations under high-salinity in comparison with mild-salinity, AMF and G. barbadense </span><span>show</span><span>e</span><span>d</span><span> the best symbiotic performance under 12-13 dS m^-1.</span> https://jast.modares.ac.ir/article_16750_8dd87392f8dd35f1dc9d2cfe656a83b9.pdf