Phyllosphere yeasts rapidly break down biodegradable plastics

被引：81

作者：

Kitamoto, Hiroko K. ^{[1
]}

Shinozaki, Yukiko ^{[1
]}

Cao, Xiao-hong ^{[1
]}

Morita, Tomotake ^{[2
]}

Konishi, Masaaki ^{[2
,5
]}

Tago, Kanako ^{[1
]}

Kajiwara, Hideyuki ^{[3
]}

Koitabashi, Motoo ^{[1
]}

Yoshida, Shigenobu ^{[1
]}

Watanabe, Takashi ^{[1
]}

Sameshima-Yamashita, Yuka ^{[1
]}

Nakajima-Kambe, Toshiaki ^{[4
]}

Tsushima, Seiya ^{[1
]}

机构：

[1] Natl Inst Agroenvironm Sci NIAES, Tsukuba, Ibaraki 3058604, Japan

[2] Natl Inst Adv Ind Sci & Technol, Res Inst Innovat Sustainable Chem, Tsukuba, Ibaraki 3058565, Japan

[3] Natl Inst Agrobiol Sci NIAS, Tsukuba, Ibaraki 3058602, Japan

[4] Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan

[5] Japan Agcy Marine Earth Sci & Technol JAMSTEC, Inst Biogeosci, Yokosuka, Kanagawa 2370061, Japan

来源：

AMB EXPRESS | 2011年 / 1卷

基金：

日本科学技术振兴机构;

关键词：

Pseudozyma; Biodegradable plastic; Phyllosphere; Yeast;

D O I：

10.1186/2191-0855-1-44

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The use of biodegradable plastics can reduce the accumulation of environmentally persistent plastic wastes. The rate of degradation of biodegradable plastics depends on environmental conditions and is highly variable. Techniques for achieving more consistent degradation are needed. However, only a few microorganisms involved in the degradation process have been isolated so far from the environment. Here, we show that Pseudozyma spp. yeasts, which are common in the phyllosphere and are easily isolated from plant surfaces, displayed strong degradation activity on films made from poly-butylene succinate or poly-butylene succinate-co-adipate. Strains of P. antarctica isolated from leaves and husks of paddy rice displayed strong degradation activity on these films at 30 degrees C. The type strain, P. antarctica JCM 10317, and Pseudozyma spp. strains from phyllosphere secreted a biodegradable plastic-degrading enzyme with a molecular mass of about 22 kDa. Reliable source of biodegradable plastic-degrading microorganisms are now in our hands.

引用

页码：1 / 11

页数：11