TY - JOUR
T1 - Autophagosomes accumulation in the vacuoles of the fungus Ustilago maydis and the role of proteases in their digestion
AU - Soberanes-Gutierrez, Cinthia V.
AU - Vázquez-Carrada, Melissa
AU - López-Villegas, Edgar O.
AU - Vega-Arreguín, Julio C.
AU - Villa-Tanaca, Lourdes
AU - Ruiz-Herrera, Jose
N1 - Publisher Copyright:
© 2019 FEMS.
PY - 2019/6/10
Y1 - 2019/6/10
N2 - In the present study we determined whether Ustilago maydis accumulates autophagosomes within vacuoles when the cells are exposed to nutritional stress conditions. We investigated whether proteinase B and proteinase A are involved in their degradation. To this effect, wild type and pep4 mutant were incubated in minimal medium lacking a carbon source. It was observed that after incubation in nutrient-deficient media, spherical bodies appeared within the pep4 mutant strains vacuoles. In addition, autophagosomes were accumulated in U. maydis WT cells incubated in the presence of the serine protease inhibitor PMSF and accumulation of large autophagosomes and electrodense structures in the pep4 mutant cell vacuoles took place. These results demonstrate that the homologues of both, the proteinase B and the protease A, are involved in the autophagosomes degradation process in U. maydis.
AB - In the present study we determined whether Ustilago maydis accumulates autophagosomes within vacuoles when the cells are exposed to nutritional stress conditions. We investigated whether proteinase B and proteinase A are involved in their degradation. To this effect, wild type and pep4 mutant were incubated in minimal medium lacking a carbon source. It was observed that after incubation in nutrient-deficient media, spherical bodies appeared within the pep4 mutant strains vacuoles. In addition, autophagosomes were accumulated in U. maydis WT cells incubated in the presence of the serine protease inhibitor PMSF and accumulation of large autophagosomes and electrodense structures in the pep4 mutant cell vacuoles took place. These results demonstrate that the homologues of both, the proteinase B and the protease A, are involved in the autophagosomes degradation process in U. maydis.
KW - PEP4
KW - Pep4p
KW - Ustilago maydis
KW - autophagosomes
KW - proteinase A
KW - vacuole
UR - http://www.scopus.com/inward/record.url?scp=85068196935&partnerID=8YFLogxK
U2 - 10.1093/femsle/fnz108
DO - 10.1093/femsle/fnz108
M3 - Artículo
C2 - 31183499
AN - SCOPUS:85068196935
SN - 0378-1097
VL - 366
JO - FEMS Microbiology Letters
JF - FEMS Microbiology Letters
IS - 10
M1 - fnz108
ER -