Clustering and cellular distribution characteristics of virus particles of Tomato spotted wilt virus and Tomato zonate spot virus in different plant hosts

Table 1 The clustering types of virus particle sampled from diseased tissues of different plant hosts infected with TSWV and TZSV, respectively

Virus isolates^a	Host plants	Virus particle clustering^b
Virus isolates^a	Host plants	SP	DPC	TPC	MPC
TSWV-LX	Nicotiana tabacum cv Yunyan 87	+	+	+	++
TSWV-SM	N. rustica	+	+	+	++
TSWV-SL	N. tabacum cv Honghuadajinyuan	+	+	+	++
TSWV-KM	N. tabacum cv K326	+	+	+	+++
TSWV-SM	Lactuca sativa	++	++	++	+++
TSWV-KM	N. tabacum cv Yunyan 203	+	+	+	+++
TSWV-LX	L. sativa	++	++	++	+++
TSWV-MZ	Lycopersicon esculentum	++	++	+	+
TSWV-LL	L. esculentum	+++	+	+	+
TSWV-KY	L. esculentum	++	+	+	+
TSWV-LL	L. sativa	+	+	+	++
TZSV-ZhT	L. sativa	++	++	++	+++
TZSV-ChG	L. esculentum	++	++	++	+++
TZSV-ChG	Capsicum annuum	+++	+	+	++
TZSV-NN	L. esculentum	++	++	++	+++
TZSV-441	N. tabacum cv K326	++	++	+	++
TZSV-441	N. tabacum cv Yunyan 203	+	++	++	++
TZSV-441	N. rustica	++	++	++	+
TZSV-441	N. tabacum cv Honghuadajinyuan	++	++	++	+
TZSV-LX	N. tabacum cv Yunyan 87	++	++	++	+++

^aVirus isolates isolated different regions of Yunnan province, China
^bThe average numbers of SP, DPC TPC and MPC observed at least 30 fields at 80KV and 50,000 times of transmission electron microscopy(JEM 100 CX-II). +, >0 and ≤2; ++, >2 and ≤4; +++, >4 and ≤6