The phytoplasmal virulence factor TENGU causes plant sterility by downregulating of the jasmonic acid and auxin pathways.
The phytoplasmal virulence factor TENGU causes plant sterility by downregulating of the jasmonic acid and auxin pathways.
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DOI：
10.1038/srep07399
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发表时间：
2014-12-10
影响因子：
4.6
通讯作者：
Namba S
中科院分区：
文献类型：
--
作者：
Minato N;Himeno M;Hoshi A;Maejima K;Komatsu K;Takebayashi Y;Kasahara H;Yusa A;Yamaji Y;Oshima K;Kamiya Y;Namba S
尽管受病原体感染的植物通常不能产生后代，但仍不清楚如何在宿主植物中诱导不育。在这项研究中，我们证明TENGU，植原体毒力肽被称为侏儒诱导剂，作为不育诱导剂。TENGU的转基因表达诱导拟南芥花中的雄性和雌性不育，类似于在生长素反应因子6（ARF6）和ARF8的双敲除突变体中观察到的那些，所述双敲除突变体已知以茉莉酸（JA）依赖的方式调节花发育。转tengu基因植株和植原体感染植株的ARF6和ARF8转录本均显著降低。此外，在tengu转基因芽中JA和生长素水平实际上降低，表明TENGU通过抑制ARF6和ARF8降低植物激素的内源水平，导致花成熟受损。TENGU是第一个通过干扰植物激素信号而影响植物繁殖的毒力因子。
Despite plants infected by pathogens are often unable to produce offspring, it remains unclear how sterility is induced in host plants. In this study, we demonstrate that TENGU, a phytoplasmal virulence peptide known as a dwarfism inducer, acts as an inducer of sterility. Transgenic expression of TENGU induced both male and female sterility in Arabidopsis thaliana flowers similar to those observed in double knockout mutants of auxin response factor 6 (ARF6) and ARF8, which are known to regulate floral development in a jasmonic acid (JA)-dependent manner. Transcripts of ARF6 and ARF8 were significantly decreased in both tengu-transgenic and phytoplasma-infected plants. Furthermore, JA and auxin levels were actually decreased in tengu-transgenic buds, suggesting that TENGU reduces the endogenous levels of phytohormones by repressing ARF6 and ARF8, resulting in impaired flower maturation. TENGU is the first virulence factor with the effects on plant reproduction by perturbation of phytohormone signaling.
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影响因子：
7.4
作者：
Curaba, J;Moritz, T;Vachon, G
通讯作者：
Vachon, G
DOI：
10.1111/tpj.12495
发表时间：
2014-05
期刊：
The Plant journal : for cell and molecular biology
影响因子：
--
作者：
Maejima K;Iwai R;Himeno M;Komatsu K;Kitazawa Y;Fujita N;Ishikawa K;Fukuoka M;Minato N;Yamaji Y;Oshima K;Namba S
通讯作者：
Namba S
影响因子：
5.2
作者：
Albertazzi, Giorgia;Milc, Justyna;Pecchioni, Nicola
通讯作者：
Pecchioni, Nicola
影响因子：
4.9
作者：
Tabata, Ryo;Ikezaki, Masaya;Ishiguro, Sumie
通讯作者：
Ishiguro, Sumie
影响因子：
56.9
作者：
Navarro, L;Dunoyer, P;Jones, JDG
通讯作者：
Jones, JDG