The effect of elevated temperature on Barley yellow dwarf virus-PAV in wheat

Nancarrow, Narelle; Constable, Fiona; Finlay, Kyla J.; Freeman, Angela; Rodoni, Brendan; Trębicki, Piotr; Vassiliadis, Simone; Yen, Alan L.; Luck, Jo

doi:10.1016/j.virusres.2013.12.023

Cited by 62 publications

(63 citation statements)

References 34 publications

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“…This could have contributed to the increase in BYDV titre in wheat exposed to eCO 2 as indicated in Nancarrow et al . () who showed that elevated temperature significantly increased BYDV titre in wheat. It is also possible that virus replication is directly enhanced under eCO 2 conditions or changes in plant chemistry may facilitate the replication of the virus.…”

Section: Discussionmentioning

confidence: 99%

“…The multiplex RT‐qPCR was carried out as described by Nancarrow et al . () using a Rotor‐Gene Multiplex RT‐PCR kit. No‐template controls, an inter run calibrator and six cRNA standards were included in triplicate in each RT‐qPCR run.…”

Section: Methodsmentioning

confidence: 99%

“…Conversely, a high concentration of virus in plants can have a significant negative effect on plant yield with disease severity positively correlated with yield reduction (Jedlinski et al, 1977;Bosque-Perez et al, 1998). High virus titre also causes earlier and more pronounced symptom expression in susceptible varieties, increasing the probability of virus spread by insects (Ajayi & Dewar, 1983;Nancarrow et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Virus disease in wheat predicted to increase with a changing climate

Trębicki¹,

Nancarrow

Cole

et al. 2015

Global Change Biology

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Current atmospheric CO 2 levels are about 400 lmol mol À1 and are predicted to rise to 650 lmol mol À1 later this century. Although the positive and negative impacts of CO 2 on plants are well documented, little is known about interactions with pests and diseases. If disease severity increases under future environmental conditions, then it becomes imperative to understand the impacts of pathogens on crop production in order to minimize crop losses and maximize food production. Barley yellow dwarf virus (BYDV) adversely affects the yield and quality of economically important crops including wheat, barley and oats. It is transmitted by numerous aphid species and causes a serious disease of cereal crops worldwide. This study examined the effects of ambient (aCO 2 ; 400 lmol mol À1 ) and elevated CO 2 (eCO 2 ; 650 lmol mol À1 ) on noninfected and BYDV-infected wheat. Using a RT-qPCR technique, we measured virus titre from aCO 2 and eCO 2 treatments. BYDV titre increased significantly by 36.8% in leaves of wheat grown under eCO 2 conditions compared to aCO 2 . Plant growth parameters including height, tiller number, leaf area and biomass were generally higher in plants exposed to higher CO 2 levels but increased growth did not explain the increase in BYDV titre in these plants. High virus titre in plants has been shown to have a significant negative effect on plant yield and causes earlier and more pronounced symptom expression increasing the probability of virus spread by insects. The combination of these factors could negatively impact food production in Australia and worldwide under future climate conditions. This is the first quantitative evidence that BYDV titre increases in plants grown under elevated CO 2 levels.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Virus disease in wheat predicted to increase with a changing climate

Trębicki¹,

Nancarrow

Cole

et al. 2015

Global Change Biology

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“…Among these studies, those concerning viruses have long focused either on the vector biology (e.g. developmental time, longevity, fecundity, migration) and ecology [12–14], or on the virus accumulation and symptom expression in planta [15–17]. While most of these studies speculate on a possible impact of environmental changes on the rate of virus transmission, direct experimental support was totally lacking, or not statistically tested [18], until very recently [19, 20].…”

Section: Introductionmentioning

confidence: 99%

Water deficit enhances the transmission of plant viruses by insect vectors

et al. 2017

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Drought is a major threat to crop production worldwide and is accentuated by global warming. Plant responses to this abiotic stress involve physiological changes overlapping, at least partially, the defense pathways elicited both by viruses and their herbivore vectors. Recently, a number of theoretical and empirical studies anticipated the influence of climate changes on vector-borne viruses of plants and animals, mainly addressing the effects on the virus itself or on the vector population dynamics, and inferring possible consequences on virus transmission. Here, we directly assess the effect of a severe water deficit on the efficiency of aphid-transmission of the Cauliflower mosaic virus (CaMV) or the Turnip mosaic virus (TuMV). For both viruses, our results demonstrate that the rate of vector-transmission is significantly increased from water-deprived source plants: CaMV transmission reproducibly increased by 34% and that of TuMV by 100%. In both cases, the enhanced transmission rate could not be explained by a higher virus accumulation, suggesting a more complex drought-induced process that remains to be elucidated. The evidence that infected plants subjected to drought are much better virus sources for insect vectors may have extensive consequences for viral epidemiology, and should be investigated in a wide range of plant-virus-vector systems.

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“…There are a little number of recent studies on the influences of factors like CO2, elevated temperature and rainfall-related parameters upon a small number of important viruses, eg, PLRV and Potato yellow vein virus (PYVV) (Jones, 2014), BYDV (Nancarrow et al, 2014;Rua et al, 2013), BYMV (Guerret et al, 2016), CMV,PVY, PVX (Del Torro et al, 2015) TYLCV, and TuMV , and several important their vectors (Gillespie et al, 2012;Ryalls et al, 2015) It was noted that during extreme weather conditions the emergence of new viruses that cause epiphytotic episodes is occasionally monitored, diagnosed and identified. However, often the manifestation of the adaptive reaction of the plant to the action of environmental factors is similar to the manifestation of pathologies caused by infectious defeat of the plant organism.…”

Section: Introductionmentioning

confidence: 99%

Influence of Climate Changes on Wheat Viruses Variability in Ukraine

Mіshchеnkо¹,

Dunich²,

Mishchenko³

et al. 2017

AgricultForest

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SUMMARYClimate change is closely related to the level of losses from plant diseases because the environment significantly affects plants, pathogens and their vectors. Monitoring of viral infections in agrocenoses is one of the priority measures to preserve the harvest. However, often symptoms of the adaptive response of plants caused by environmental abiotic factors like the symptoms caused by infectious agents. In this regard, there is a problem to identify the reasons of pathological symptoms on the plants, as some of them are extremely important value for technologies of agricultural crops growing. The aim of work was to investigate the variability of composition of viruses' species infecting winter wheat, to study their prevalence in Ukraine under agro-climatic change conditions. The viral monitoring showed that the winter wheat plants cv. Russia and Smuglyanka with the yellowing symptoms on leaves and "purple-yellow" leaves were infected with BYDV. Unlike previous years, WSMV was not detected in this agrocenosis that can be related to the strong drought in autumn and considerable decline of HTC that resulted in limitation of quantity of WSMV vectors. The symptoms of leaf rolling in barley cv. Antigon, leaf yellowing of wheat cv. Ermak and leaves reddening in wheat Donetska-46 were caused by technogenic influence and other abiotic factors. The analysis of temperature indexes that characterize terms of overwintering and vegetation of winter wheat showed that in May (phase of beginning of plants earing) high plus temperatures during the day changed on low temperatures at night. It is necessary to notice that the reason for appearance of symptoms "purple-yellow" and "purple" leaves of winter wheat are changes of carbohydrate balance that arise up as a result of nonspecific reactions of plants to stress caused by virus infection (cv. Russia) or sharp temperature differential (cv. Vasylyna, Podolyanka, Albatros odessky, Myronivska-67, Smuglyanka).

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The effect of elevated temperature on Barley yellow dwarf virus-PAV in wheat

Cited by 62 publications

References 34 publications

Virus disease in wheat predicted to increase with a changing climate

Virus disease in wheat predicted to increase with a changing climate

Water deficit enhances the transmission of plant viruses by insect vectors

Influence of Climate Changes on Wheat Viruses Variability in Ukraine

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