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Characterization of Blue Mold Penicillium Species Isolated from Stored Fruits Using Multiple Highly Conserved Loci

文献类型： 外文期刊

作者： Yin, Guohua 1 ; Zhang, Yuliang 1 ; Pennerman, Kayla K. 2 ; Wu, Guangxi 3 ; Hua, Sui Sheng T. 4 ; Yu, Jiujiang 5 ; Juri 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Minist Agr, Key Lab Biol & Genet Resources Trop Crops, Haikou 5711001, Hainan, Peoples R China

2.Rutgers State Univ, Dept Plant Biol & Pathol, New Brunswick, NJ 08901 USA

3.Oak Ridge Associated Univ, Oak Ridge Inst Sci & Educ, Oak Ridge, TN 37831 USA

4.ARS, USDA, Western Reg Res Ctr, Albany, CA 94710 USA

5.ARS, USDA, Agr Res Ctr, Beltsville, MD 20705 USA

关键词： blue molds; stored fruits; Penicillium spp.; ITS; benA; CaM

期刊名称：JOURNAL OF FUNGI （ 影响因子：5.816； 五年影响因子：6.499 ）

ISSN：

年卷期： 2017 年 3 卷 1 期

页码：

收录情况： SCI

摘要： Penicillium is a large genus of common molds with over 400 described species; however, identification of individual species is difficult, including for those species that cause postharvest rots. In this study, blue rot fungi from stored apples and pears were isolated from a variety of hosts, locations, and years. Based on morphological and cultural characteristics and partial amplification of the beta-tubulin locus, the isolates were provisionally identified as several different species of Penicillium. These isolates were investigated further using a suite of molecular DNA markers and compared to sequences of the ex-type for cognate species in GenBank, and were identified as P. expansum (3 isolates), P. solitum (3 isolates), P. carneum (1 isolate), and P. paneum (1 isolate). Three of the markers we used (ITS, internal transcribed spacer rDNA sequence; benA, beta-tubulin; CaM, calmodulin) were suitable for distinguishing most of our isolates from one another at the species level. In contrast, we were unable to amplify RPB2 sequences from four of the isolates. Comparison of our sequences with cognate sequences in GenBank from isolates with the same species names did not always give coherent data, reinforcing earlier studies that have shown large intraspecific variability in many Penicillium species, as well as possible errors in some sequence data deposited in GenBank.

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