Combined effects of endo- and exogenous trehalose on stress tolerance and biocontrol efficacy of two antagonistic yeasts
文献类型：期刊论文
| 作者 | Li, B. Q.1; Zhou, Z. W.1,2; Tian, S. P.1 |
| 刊名 | Biological control
 |
| 出版日期 | 2008-08-01 |
| 卷号 | 46期号:2页码:187-193 |
| 关键词 | Cryptococcus laurentii Rhodotorula glutinis Penicillium expansum Trehalose Combined effect Freezing Freeze-drying Biological control Yeasts |
| ISSN号 | 1049-9644 |
| DOI | 10.1016/j.biocontrol.2008.04.01 |
| 通讯作者 | Tian, s. p.(tsp@ibcas.ac.en) |
| 英文摘要 | Effects of endo- and exogenous trehalose on viability of two antagonistic yeasts, cryptococcus laurentii (kuffer.) skinner and rhodotorula glutinis (fresen.) harrison, were investigated after being treated with rapid-freezing, slow-freezing and freeze-drying, respectively. the accumulation of intracellular trehalose in the two yeasts was induced by culturing the yeast cells in trehalose-containing medium, which significantly enhanced viabilities of both yeasts in the slow-freezing test. trehalose, as an exogenous protectant, at the concentration of 5% or 10% could markedly increase survivals of the two yeasts when subjected to freeze-drying. when combined with exogenous trehalose as a protective substance, the yeasts containing high intracellular trehalose level showed higher viabilities as compared to those containing low levels under both freezing and freeze-drying stresses. the highest survival of c laurentii and r. glutinis were 90% and 97% after freeze-drying, respectively, compared to 63% and 28% for the yeasts with lower intracellular trehalose levels. these results may be due to the fact that a combined effect occurred between endo- and exogenous trehalose of yeast cells. the combined effect on c laurentii and r. glutinis also resulted in the highest level of biocontrol efficacy against blue mold in apple fruit caused by penicillium expansum link, and reduced the disease indexes to 45 and 56, respectively, compared to 94 and 81 in the untreated control. meanwhile, the combination of endo- and exogenous trehalose significantly increased population of both yeasts in apple wounds, especially at the first 48 h after inoculation, which might explain the reason of the improvement in biocontrol effects of the two yeasts. (c) 2008 elsevier inc. all rights reserved. |
| WOS关键词 | POSTHARVEST BIOLOGICAL-CONTROL ; SACCHAROMYCES-CEREVISIAE ; TREHALOSE-6-PHOSPHATE SYNTHASE ; CRYPTOCOCCUS-LAURENTII ; SODIUM-BICARBONATE ; CANDIDA-SAKE ; VIABILITY ; PRESERVATION ; PROTECTANTS ; STABILITY |
| WOS研究方向 | Biotechnology & Applied Microbiology ; Entomology |
| WOS类目 | Biotechnology & Applied Microbiology ; Entomology |
| 语种 | 英语 |
| WOS记录号 | WOS:000257590700014 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2390028 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Tian, S. P. |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Photosynth & Environm Mol Physiol, Inst Bot, Beijing 100093, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, B. Q.,Zhou, Z. W.,Tian, S. P.. Combined effects of endo- and exogenous trehalose on stress tolerance and biocontrol efficacy of two antagonistic yeasts[J]. Biological control,2008,46(2):187-193. |
| APA | Li, B. Q.,Zhou, Z. W.,&Tian, S. P..(2008).Combined effects of endo- and exogenous trehalose on stress tolerance and biocontrol efficacy of two antagonistic yeasts.Biological control,46(2),187-193. |
| MLA | Li, B. Q.,et al."Combined effects of endo- and exogenous trehalose on stress tolerance and biocontrol efficacy of two antagonistic yeasts".Biological control 46.2(2008):187-193. |
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来源：中国科学院大学
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