Influence of the terminal left domain on horizontal and vertical transmissions of tomato planta macho viroid and potato spindle tuber viroid through pollen

被引：14
作者：
Yanagisawa, Hironobu [1 ,2 ]
Sano, Teruo [3 ]
Hase, Shu [4 ]
Matsushita, Yosuke [5 ]
机构：
[1] Natl Agr & Food Res Org, Cent Region Agr Res Ctr, Tsukuba, Ibaraki 3058666, Japan
[2] Iwate Univ, United Grad Sch Agr Sci, Morioka, Iwate 0208550, Japan
[3] Hirosaki Univ, Fac Agr & Life Sci, Plant Pathol Lab, Hirosaki, Aomori 0368560, Japan
[4] Yamagata Univ, Plant Pathol Lab, Fac Agr, Tsuruoka, Yamagata 9970037, Japan
[5] Natl Agr & Food Res Org, Inst Vegetable & Floriculture Sci, Tsukuba, Ibaraki 3058519, Japan
来源：
VIROLOGY | 2019年 / 526卷
关键词：
Tomato planta macho viroid; Potato spindle tuber viroid; Pollen transmission; Terminal left domain; Pathogenicity domain; Horizontal transmission; Vertical transmission; SEED TRANSMISSION; RNA; IDENTIFICATION; PATHOGENICITY; REPLICATION; DETERMINANT; SEQUENCE; PETUNIA; DISEASE; SYSTEM;
D O I：
10.1016/j.virol.2018.09.021
中图分类号：
Q93 [微生物学];
学科分类号：
071005 ; 100705 ;
摘要：
Viroids can be transmitted vertically and/or horizontally by pollen. Tomato planta macho viroid (TPMVd) has a high rate of horizontal transmission by pollen, whereas potato spindle tuber viroid (PSTVd) does not. To specify the domain(s) involved in horizontal transmission, four viroid chimeras were created by exchanging the terminal left (n,) and/or pathogenicity (P) domains between PSTVd and TPMVd. PSTVd-based chimeras containing TPMVd-TL and P, or TPMVd-TL alone, displayed a high rate of horizontal transmission. TPMVd-based chimeras containing PSTVd-TL and P lost infectivity, and those containing PSTVd-TL alone displayed a low rate of horizontal transmission. In addition, the vertical transmission rate was also higher in the mutants containing TPMVd-TL than in the others. These findings indicate that the sequences or structures in the TL and P (although the role is limited) domains are important not only for horizontal but also for vertical transmission by pollen.
引用
收藏
页码：22 / 31
页数：10
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