@ARTICLE{TreeBASE2Ref25961, author = {Tu Anh Nguyen and Ousmane H Ciss? and Jie Yun Wong and Peng Zheng and David Hewitt and Minou Nowrousian and Jason E Stajich and Gregory J Jedd}, title = {Innovation and constraint leading to complex multicellularity in the Ascomycota}, year = {2017}, keywords = {fungi; multicellularity; neolecta; pezizomycotina}, doi = {10.1038/ncomms14444}, url = {http://www.nature.com/articles/ncomms14444}, pmid = {}, journal = {Nature Communications}, volume = {8}, number = {}, pages = {}, abstract = {Understanding the emergence of complex multicellularity (CM) is a major challenge for evolutionary biology. In the fungi, CM is based on hyphal cells interconnected through septal pores. In the Ascomycota, it emerged in the Pezizomycotina. The genus Neolecta defines an enigma: phylogenetically placed with early diverging yeast, Neolecta nevertheless possesses Pezizomycotina-like CM. Here, we sequence the Neolecta irregularis genome and identify candidate CM-associated functions by searching for genes present in Neolecta and the Pezizomycotina, which are absent or divergent in budding and fission yeast. This group of over 1,000 genes is enriched for known functions related to diverse endomembrane systems. Functional genomics characterizes additional organelle-associated proteins playing important roles in hyphal development. Our data identify endomembrane systems providing a foundation for the emergence of CM. Extensive convergent gene loss, degeneration and retention further suggest a deterministic process whereby shared modes of cellular organization select for the evolution of similarly configured organelle- and transport-related machineries. } }

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