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|Title:||UV-B resistant yeast inhabit the phyllosphere of strawberry.|
|Authors:||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
|Affiliation:||ANA GABRIELE BARBOSA CASTELIANI, ESALQ-USP; VANESSA NESSNER KAVAMURA; TIAGO DOMINGUES ZUCCHI; MIRIAN LOBO SABER, ESALQ-USP; ROSELY DOS SANTOS NASCIMENTO, CNPMA; ROSA TOYOKO SHIRAISHI FRIGHETTO, CNPMA; RODRIGO GOUVEA TAKETANI, Associação Cultural e Educacional de Garça; ITAMAR SOARES DE MELO, CNPMA.|
|Citation:||British Microbiology Research Journal, London, v. 4, n. 10, p. 1105-1117, 2014.|
|Description:||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.|
|Type of Material:||Separatas|
|Appears in Collections:||Artigo em periódico indexado (CNPMA)|