The Contrasting Effects of Elevated CO(2) on TYLCV Infection of Tomato Genotypes with and without the Resistance Gene, Mi-1.2.
The Contrasting Effects of Elevated CO(2) on TYLCV Infection of Tomato Genotypes with and without the Resistance Gene, Mi-1.2.
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DOI：
10.3389/fpls.2016.01680
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发表时间：
2016
影响因子：
5.6
通讯作者：
Ge F
中科院分区：
文献类型：
--
作者：
Guo H;Huang L;Sun Y;Guo H;Ge F
大气中二氧化碳浓度升高通常会增强C3植物的光合作用，并改变植物组织中的初级和次生代谢产物。通过改变寄主植物中的防御信号通路，二氧化碳浓度升高可能会影响传播病毒的植物、病毒和昆虫之间的相互作用。在植物中，R基因介导的抗性代表了对病原体和草食性昆虫的一种有效和高度特异的防御。目前的研究确定了二氧化碳浓度升高对携带和不携带抗线虫基因Mi-1.2的番茄植株的影响，该基因也对包括烟粉虱在内的一些吸液昆虫具有抗性。此外，还测定了CO2浓度升高对媒介粉虱行为和番茄黄化卷叶病毒(TYLCV)严重程度的影响。结果表明，CO2浓度升高提高了Moneymer和Mi-1.2两个品种的生物量、株高和光合速率。CO2浓度升高降低了Moneymer植株的TYLCV发病率和严重程度，但对Mi-1.2植株的影响相反，无论是农业接种还是通过烟粉虱饲养接种。在感染TYLCV的Mi-1.2植株上，高浓度CO2增加了水杨酸(SA)依赖的信号通路，而降低了SA依赖的信号通路。CO2浓度升高不会显著影响烟粉虱的适合度或致病烟粉虱传播病毒的能力，而不受植物基因型的影响。结果表明，无论是接种植物还是接种载体，CO2浓度升高都提高了Moneymer植株对TYLCV的抗性，但降低了Mi-1.2植株对TYLCV的抗性。我们的结果表明，在高CO2条件下，含有R基因Mi-1.2的植物基因型更容易受到TYLCV的攻击，可能也更容易受到其他植物病毒的攻击。
Elevated atmospheric CO2 typically enhances photosynthesis of C3 plants and alters primary and secondary metabolites in plant tissue. By modifying the defensive signaling pathways in host plants, elevated CO2 could potentially affect the interactions between plants, viruses, and insects that vector viruses. R gene-mediated resistance in plants represents an efficient and highly specific defense against pathogens and herbivorous insects. The current study determined the effect of elevated CO2 on tomato plants with and without the nematode resistance gene Mi-1.2, which also confers resistance to some sap-sucking insects including whitefly, Bemisia tabaci. Furthermore, the subsequent effects of elevated CO2 on the performance of the vector whiteflies and the severity of Tomato yellow leaf curl virus (TYLCV) were also determined. The results showed that elevated CO2 increased the biomass, plant height, and photosynthetic rate of both the Moneymaker and the Mi-1.2 genotype. Elevated CO2 decreased TYLCV disease incidence and severity for Moneymaker plants but had the opposite effect on Mi-1.2 plants whether the plants were agroinoculated or inoculated via B. tabaci feeding. Elevated CO2 increased the salicylic acid (SA)-dependent signaling pathway on Moneymaker plants but decreased the SA-signaling pathway on Mi-1.2 plants when infected by TYLCV. Elevated CO2 did not significantly affect B. tabaci fitness or the ability of viruliferous B. tabaci to transmit virus regardless of plant genotype. The results indicate that elevated CO2 increases the resistance of Moneymaker plants but decreases the resistance of Mi-1.2 plants against TYLCV, whether the plants are agroinoculated or inoculated by the vector. Our results suggest that plant genotypes containing the R gene Mi-1.2 will be more vulnerable to TYLCV and perhaps to other plant viruses under elevated CO2 conditions.
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DOI：
10.21273/jashs.123.6.1004
发表时间：
1998-11-01
影响因子：
1.9
作者：
Friedmann, M;Lapidot, M;Pilowsky, M
通讯作者：
Pilowsky, M
影响因子：
1.9
作者：
Casteel, Clare L.;Walling, Linda L.;Paine, Timothy D.
通讯作者：
Paine, Timothy D.
影响因子：
1.9
作者：
Jiang, YX;Nombela, G;Muñiz, M
通讯作者：
Muñiz, M
影响因子：
2.7
作者：
Czosnek, H;Laterrot, H
通讯作者：
Laterrot, H
DOI：
10.1073/pnas.92.2.622
发表时间：
1995-01-17
影响因子：
11.1
作者：
KALOSHIAN, I;LANGE, WH;WILLIAMSON, VM
通讯作者：
WILLIAMSON, VM