| Título: | UV-B resistant yeast inhabit the phyllosphere of strawberry. |
| Autores: |
CASTELIANI, A. G. B. KAVAMURA, V. N. ZUCCHI, T. D. SÁBER, M. L. NASCIMENTO, R. dos S. FRIGHETTO, R. T. S. TAKETANI, R. G. MELO, I. S. de |
| Fecha: |
2014 2014-11-18 |
| Publicador: | Repositório Acesso Livre à Informação Científica da Embrapa (ALICE) |
| Fuente: | |
| Tipo: | Artigo em periódico indexado (ALICE) |
| Tema: |
T-RFLP Field conditions Leaf surface Levedo Morango Raio ultravioleta Clima Strawberries Yeasts Phyllosphere Ultraviolet radiation Global warming |
| Descripción: |
Abstract: The increase on the worldwide influx of solar ultraviolet radiation (UV-B) has inflicted a considerable challenge, due to its deleterious effects to live beings and pose a special threat to phyllosphere communities. However, UV-B influence on epiphytic yeasts associated with agricultural crops remains limited. Main aim of the present study was to determine the effect of ultraviolet-B radiation on the epiphytic yeast populations associated with strawberry under field conditions. Thus, strawberries (Fragaria x ananassa Duchesne cv. Oso Grande) were grown under three different treatments: a) environmental UV-B, b) enhanced UV-B and c) decreased UV-B; thereafter, their yeast epiphytic populations were analyzed by T-RFLP prior to yeast isolation, identification and in vitro test for the sensitivity against UV-B. Our results demonstrated that UV-B radiation did not significantly affect the strawberry epiphytic yeast populations. However, isolates directly exposed to radiation, generally revealed morphological abnormalities and a diminishing value in the percentage of survival, although they remained constant after 240 min of exposure. The increase in UV-B radiation was not sufficient to affect the dynamics and composition of epiphytic yeast communities from strawberry, there was a clear morphotype shift towards the selection of pigmented isolates. 2014 |
| Idioma: | en |