Fungicide impacts on photosynthesis in crop plants

Petit, Anne-Noëlle; Fontaine, Florence; Vatsa, Parul; Clément, Christophe; Vaillant‐Gaveau, Nathalie

doi:10.1007/s11120-012-9719-8

Cited by 156 publications

(122 citation statements)

References 61 publications

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“…For example, the strobilurin treatment of C3 plants, such as wheat, barley and soybean, has been shown to reduce stomatal conductance (Nason et al 2007) whereas triazole positively affected photosynthesis by enhancing the chlorophyll content (Petit et al 2012). A deeper understanding of the reaction of these two parameters to fungicide application is also needed for maize, in order to mechanistically explain the observed yield increase and to better exploit these chemicals, not only to control fungal diseases but also as crop enhancers.…”

Section: Discussionmentioning

confidence: 99%

Grain yield enhancement through fungicide application on maize hybrids with different susceptibility to northern corn leaf blight

Testa¹,

Reyneri²,

Cardinale³

et al. 2015

Cereal Research Communications

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Foliar fungicides are widely used to control pests on several crops and, from mid-2000s, have become more common on maize. The yield advantages derived from foliar fungicides on maize, as for other crops, could be related not only to the direct control of the disease, but also to physiological effects on the plant. The aim of the research was to evaluate the response of maize to the application of an azoxystrobin and propiconazole mixture. The fungicide was applied to hybrids with different susceptibility to northern corn leaf blight (NCLB) foliar disease at the beginning of stem elongation or at the tassel emergence stage. The best application timing resulted to be at the tassel emergence stage for both pathogen control and grain yield. The treatment effectively controlled disease development on the two hybrids susceptible to NCLB. However, the yield of the moderately-resistant hybrid increased unexpectedly to a comparable extent, even though no significant fungal containment was detected from a visual inspection. The peroxidase and superoxide dismutase activity, the protein leaf content and the translocation efficiency of carbohydrates from the leaf to the ear were not influenced by the fungicide treatments, differently from what had been previously shown on wheat. The authors suggest that rather than the improved metabolism of the reactive oxygen species, the positive effect of the fungicide on the moderately-resistant hybrid is due to other physiological mechanisms. It is hypothesized that the fungicide leads to better yields as it prevents the allocation of metabolic resources to actively defend against the pathogen.

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Section: Discussionmentioning

confidence: 99%

Grain yield enhancement through fungicide application on maize hybrids with different susceptibility to northern corn leaf blight

Testa¹,

Reyneri²,

Cardinale³

et al. 2015

Cereal Research Communications

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show abstract

“…This could be a consequence of an adverse effect of the fungicide, affecting physiological mechanisms of the plant. Several fungicides have been reported to have negative effects on crop physiology, especially on photosynthesis (Petit et al 2012 net photosynthesis (Xia et al 2006), and to reduce stomatal aperture (Gopi et al 2005). Of the fungicides used in the present study, triadimenol has been reported to reduce growth and affect phytohormones (Buchenauer and Röhner 1981).…”

Section: Discussionmentioning

confidence: 99%

Influence of fungicide treatments on disease severity caused by Zymoseptoria tritici, and on grain yield and quality parameters of bread-making wheat under Mediterranean conditions

et al. 2014

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Zymoseptoria tritici is a major fungal pathogen which can cause serious loss in bread-making wheat. In this study, field experiments were conducted over two growing seasons to evaluate the effect of fungicide treatment (1-or 2-sprays of prothioconazole and tebuconazole) on Septoria leaf blotch (SLB) severity, wheat grain yield, hectolitre weight, crude protein and on the SDS (sodium dodecyl sulphate) sedimentation test. The influence of cultivar resistance on fungicide efficacy under Mediterranean conditions was also analysed. The results showed that in years drier than average, fungicide application might not be recommended as SLB severity would be low and the fungicide application itself could reduce grain yield. At highseverity of SLB, one spray of prothioconazole + tebuconazole applied between anthesis and maturation reduced disease severity by more than 50 % and increased grain yield by approximately 20 %. Fungicide treatment did not affect the quality parameters of the grain, measured as crude protein and by the SDS sedimentation test, under these experiment conditions.

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“…According to Anitha & Savitha (2013), Petit et al (2012) and Shakir et al (2016) chlorophyll content were also reduced after increasing the dose of Mancozeb fungicides. Majid et al (2014), Singh & Kaur (2016) and Parween et al (2016) reported oxidative stress caused by Mancozeb that affect overall plant growth as well as biochemical parameters especially chlorophyll content.…”

Section: Resultsmentioning

confidence: 93%

“…Petit et al (2012), Anitha & Savitha (2013) and Shakir et al (2016) were also reported that growth of plants was reduced after increasing the dose of Mancozeb fungicides. Results were in agreement with the work done by Windham & Windham (2004), Bensoltane et al (2006) and Mohammed & Alrajh (2014) who have reported that Mancozeb is a systemic fungicides which are based on sterol biosynthesis inhibitor are closely related to plant growth regulators the use of which at higher than labeled rates shorten the internodes which may lead to slow-shoot and root growth.…”

Section: Resultsmentioning

confidence: 94%

Effect of Mancozeb on Mustard (Brassica juncea L.): An In-vitro study

Kidwai¹

2017

Trop. Plant Res.

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Abstract:Pesticides are extensively used all over the globe for the control of pest population responsible for reduction in yield and among them fungicides are the specifically used to control fungal plant pathogens. An In-vitro plant study was conducted to assess the effect of Mancozeb on early growth parameters on two Mustard (Brassica juncea) varieties i.e. RH-30 and Laxmi. Mancozeb (75% WP) is a widely applied contact fungicide for control of various diseases but several toxicity issues are associated with Mancozeb. Mustard is one of the most important oil yielding crops and is majorly used for various purposes such as medicinal uses, condiment and industrial uses. In the experiment three different doses of Mancozeb (75% WP) i.e. 1 mg.

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Fungicide impacts on photosynthesis in crop plants

Cited by 156 publications

References 61 publications

Grain yield enhancement through fungicide application on maize hybrids with different susceptibility to northern corn leaf blight

Grain yield enhancement through fungicide application on maize hybrids with different susceptibility to northern corn leaf blight

Influence of fungicide treatments on disease severity caused by Zymoseptoria tritici, and on grain yield and quality parameters of bread-making wheat under Mediterranean conditions

Effect of Mancozeb on Mustard (Brassica juncea L.): An In-vitro study

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