Distribution of <Emphasis Type="Italic">tomato chlorotic dwarf viroid</Emphasis> in floral organs of tomato |
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Authors: | Yosuke Matsushita Tomio Usugi Shinya Tsuda |
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Institution: | (1) National Institute of Floricultural Science, 2–1, Fujimoto, Tsukuba 305–8519, Japan;(2) National Agricultural Research Center, Tsukuba Ibaraki, 305–8666, Japan; |
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Abstract: | In situ hybridization was used to analyze the distribution pattern of Tomato chlorotic dwarf viroid (TCDVd) in floral organs of tomato plants. Following TCDVd invasion of floral organs, it became localized only in sepals
at an early developmental stage, then reached other floral organs at the flower opening stage, with the exception of part
of the placenta and ovules. When distribution of TCDVd was compared with that of Potato spindle tuber viroid (PSTVd), TCDVd was not detected in the outer integument around the embryo sac even though PSTVd was able to invade there,
suggesting that such specific distribution might reflect the frequent occurrence of viroid disease on crops caused by PSTVd-seed
transmission. |
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Keywords: | |
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