Evolution of an obligate social cheater to a superior cooperator Francesca Fiegna, Yuen-Tsu N. Yu,...
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Transcript of Evolution of an obligate social cheater to a superior cooperator Francesca Fiegna, Yuen-Tsu N. Yu,...
![Page 1: Evolution of an obligate social cheater to a superior cooperator Francesca Fiegna, Yuen-Tsu N. Yu, Supriya V. Kadam & Gregory J.Velicer Nature: 18 may.](https://reader035.fdocuments.us/reader035/viewer/2022070508/570638681a28abb8239035cf/html5/thumbnails/1.jpg)
Evolution of an obligate Evolution of an obligate social cheater to a social cheater to a
superior cooperatorsuperior cooperatorFrancesca Fiegna, Yuen-Tsu N. Yu,
Supriya V. Kadam & Gregory J.VelicerNature: 18 may 2006Nature: 18 may 2006
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Introdução• Relações obrigatórias: a) parasitismo b) mutualismo
Planta-nematóideLeishmania
Larvas de borboleta e
formigas
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Introdução• Como surgiu?? Em microbios: perda ou inativação
de genes Reversão para vida livre é altamente
improvável depois de longos períodos de evolução
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Xylella fastidiosaYersinia pestisVibrio choleraePseudomonas aeruginosaPasteurella multocidaNeisseria meningitidusHaemophilus influenzaeEscherichia coli K12Buchnera aphidicola
Microbial Minimalism: MinireviewGenome Reduction
in Bacterial Pathogens.Nancy A. Moran
Cell, Vol. 108, 583–586, 2002
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Mixococcus xanthus
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GJV1OC
~1000Meio
rico
GJV2
GJV2 X
KanR
RifR
Obligate cheater
Kan
Rif
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Competição entre OC e GJV2
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GJV1 ~1000Meio
rico
GJV2
KanR
RifR
Obligate cheater
OC
PxPhenix
< 60ger
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Produção de cultura pura de esporos
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Eficiência esporulação de Px
GJV2 x Px
OC x Px
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Competição de Px com GJV2
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• Px foi sequenciado (~19x cobertura)• Encontrada 1 mutação comparada com
OC• GNAT – família acetiltransferase• Função – não caracterizada • Testar mutação em GVB207.3
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Efeito da mutação específica de Px na morfologia da frutificação
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GJV1 ~1000Meio
rico
GJV2
KanR
RifR
Obligate cheater
OC
PxPhenix
GJV10KanR
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GJV10
OC
Px
Expressão do suposto gene da acetiltransferase