Screening of arbuscular mycorrhizal fungi associated with Persea bombycina kost and their effect on improvement of plant health
2013
Chakraborty, B.N. | Acharya, A. | Chakraborty, U. | Rabha, J. | Jha, D.K.
Persea bombycina Kost, locally known as Som plant is an economically important plant in the North-Eastern region of India which is the primary food plant of the muga silk worm Antheraea assama Westwood. The association of AMF with the Som plants was studied and their diversity was assessed in eight morphotypes. Among these, Glomus sp, Scutellospora sp, Acaulospora sp and Gigaspora sp were found associated with the different morphotypes of Som plants, wherein Glomus sp was predominant. Mass multiplied spores were further inoculated in all eight morphotypes separately. Histopathology of AMF colonized roots of Som plants revealed the presence of intra and inter radical hyphae, vesicles and arbuscules showing the colonization of AMF within the roots of the plant. Growth promotion in Som plants following successful root colonization with AMF was noted in terms of increase in height, no of leaves and no of branches. Plants inoculated with AMF also showed high phosphate solubilizing activity. Two main defense enzymes in plants, Phenylalanine Ammonia Lyase(PAL) and Peroxidase (POX) were found higher in AMF inoculated plants in comparison to control plants indicating induced resistance in Som plants.
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