UV-B Resistant Yeast Inhabit the Phyllosphere of Strawberry

Casteliani, Ana Gabriele Barbosa and Kavamura, Vanessa Nessner and Zucchi, Tiago Domingues and Sáber, Mírian Lobo and Nascimento, Rosely Santos do and Frighetto, Rosa Toyoko Shiraishi and Taketani, Rodrigo Gouvêa and Melo, Itamar Soares de (2014) UV-B Resistant Yeast Inhabit the Phyllosphere of Strawberry. British Microbiology Research Journal, 4 (10). pp. 1105-1117. ISSN 22310886

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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.

Item Type: Article
Subjects: ScienceOpen Library > Biological Science
Depositing User: Managing Editor
Date Deposited: 16 Jun 2023 12:18
Last Modified: 18 Oct 2024 04:22
URI: http://scholar.researcherseuropeans.com/id/eprint/1584

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