Efecto de la temperatura sobre aislados de Cladosporium cladosporioides recolectados del aire de La Habana, Cuba

Abstract

The effect in vitro of temperature on growth, sporulation and spore’s germination of 13 isolates of C. cladosporioides, collected from the atmosphere of Havana, Cuba has been evaluated. Eight isolates grew optimally at 25 °C, three in the range among 25-28 °C and the remaining two between 25-30 °C and 10-28 °C, respectively. Six isolates showed the highest sporulation at 25 °C and seven at 28 °C. The highest percentage of germination was observed at 25 °C in two isolates, at 28 °C in six, and at 30 °C in three. At 37 °C no isolate grew or sporulated, however germination was detected. The isolates can be grouped into three clusters considering the physiological response to the temperatures evaluated, which shows a diversity and relationship with this environmental factor. This research is a contribution to the knowledge about the influence of an ecological determinant in the life cycle of C. cladosporioides.