Development of extraradical mycelium of Scutellospora reticulata under root-organ culture: spore production and function of auxiliary cells.
(2004) International Journal of Orthopaedic and Trauma Nursing — Vol. 108, n° 1, p. 84-92 (2004)
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- The development of the extraradical mycelium and auxiliary cells and spore production of Scutellospora reticulata in association with Ri T-DNA transformed carrot roots was followed under root-organ culture conditions. Extraradical mycelium development followed classical lag-exponential-plateau phases, with an additional late decline phase in number of auxiliary cells. Spore production started in parallel with a critical extraradical mycelium biomass produced, continued long after root growth ceased and during the late decline in auxiliary cells number. Isolated auxiliary cells were shown to exhibit hyphal re-growth, but not root colonization, either in situ or in vitro. These results showed that root and extraradical mycelium development were intimately associated in a sequence where both grew together during active root growth, followed during root aging by a period in which only the fungus developed. Spore production appeared dependent on a critical extraradical mycelium biomass and on the re-allocation of resources from both the intraradical mycelium and the auxiliary cells via the hyphal network.
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Declerck, S., D’Or, D., Bivort, C., & De Souza, F. (2004). Development of extraradical mycelium of Scutellospora reticulata under root-organ culture: spore production and function of auxiliary cells. International Journal of Orthopaedic and Trauma Nursing, 108(1), 84-92. https://doi.org/10.1017/S0953756203008761 (Original work published 2004)