Data/hora: 25/06/2024 17:57:41

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 18/11/2014
Data da última atualização: | 19/11/2014
Autoria: | 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.
Afiliação: | 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.
Título: | UV-B resistant yeast inhabit the phyllosphere of strawberry.
Ano de publicação: | 2014
Fonte/Imprenta: | British Microbiology Research Journal, London, v. 4, n. 10, p. 1105-1117, 2014.
Idioma: | Inglês
Conteúdo: | 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.
Palavras-Chave: | Field conditions; Leaf surface; T-RFLP.
Thesagro: | Clima; Levedo; Morango; Raio ultravioleta.
Thesaurus Nal: | Global warming; Phyllosphere; Strawberries; Ultraviolet radiation; Yeasts.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/111868/1/2014AP016.pdf
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (13226-1) - UPC - AP - DD -  -  -  - DIS