The Accordant Trend of Both Parameters (rgs Expression and cAMP Content) Follows the Pattern of Development of Fruiting Body in Volvariella volvacea
2015
Lü, Yuanping | Lian, Lingdan | Guo, Lixian | Xie, Bin | Wang, Wei | Chen, Bingzhi | van Peer, Arend Frans | Li, Shaojie | Wu, Taju | Xie, Baogui
The formation of fruiting body in Volvariella volvacea is affected by endogenous genes and environmental factors. However, its regulation at a molecular level is still poorly understood. To study the genes involved in the formation of fruiting body, we cloned a new regulator of the G protein signaling (RGS) encoding gene (rgs) from V. volvacea. Phylogenetic analysis showed that RGS in V. volvacea and other basidiomycete RGS proteins from Schizophyllum commune and Coprinus cinereus belong to the same clade. In addition, we assayed intracellular cAMP content in the three developmental stages (mycelium, fruiting body primordia, and button). We also found that the expression of rgs was highly positively correlated to the content of intracellular cAMP during fruiting body formation. The conserved protein sequences and expression of rgs, together with high concent of cAMP at primordia tissue, suggested that rgs gene and cAMP may play a crucial role in fruiting body formation in V. volvacea.
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