Changes in photosynthesis of Lycopersicon spp. plants induced by tomato powdery mildew infection in combination with heat shock pre-treatment

Prokopová, Jitka; Mieslerová, B.; Hlaváčková, Vladimíra; Hlavinka, Jan; Lebeda, A.; Nauš, Jan; Špundová, Martina

doi:10.1016/j.pmpp.2010.01.001

Cited by 22 publications

(25 citation statements)

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“…Amateur) and moderately resistant (S. chmielewskii) genotypes revealed only minimal impairment of photosynthesis in both genotypes during the first 9 days after inoculation (Prokopová et al 2010). A slight decrease in F V /F M parameter (maximal quantum yield of photosystem II photochemistry) and increase in nonphotochemical chlorophyll fluorescence quenching (NPQ) were observed (Fig.…”

Section: Changes In Photosynthesis Of Host Plantsmentioning

confidence: 92%

“…In the susceptible genotype more pronounced changes in photosynthesis were expected in the later stages of the infection (about 14 days after inoculation) when premature senescence of the infected leaves occurred, most probably due to the activation of the cell-wall invertase. Leaf shading by the mycelium and pathogen-induced stomatal closure could contribute to the assumed inhibition of photosynthesis, too (Prokopová et al 2010). In the moderately resistant genotype (S. chmielewskii), the F V /F M decrease and NPQ increase were probably associated mainly with HR and subsequent wilting and necrotization of the infected leaves (Prokopová et al 2010).…”

Section: Changes In Photosynthesis Of Host Plantsmentioning

confidence: 99%

“…Leaf shading by the mycelium and pathogen-induced stomatal closure could contribute to the assumed inhibition of photosynthesis, too (Prokopová et al 2010). In the moderately resistant genotype (S. chmielewskii), the F V /F M decrease and NPQ increase were probably associated mainly with HR and subsequent wilting and necrotization of the infected leaves (Prokopová et al 2010). In summary the different degree of host resistance/susceptibility did not markedly change the rate and extent of the photosynthetic response to the pathogen, despite the different mechanisms involved in this response.…”

Section: Changes In Photosynthesis Of Host Plantsmentioning

confidence: 99%

“…Amateur, pre-treated or not pre-treated with heat-shock (HS; the image of maximal quantum yield of photosystem II photochemistry) (F V /F M ; e-h) and steadystate value of non-photochemical fluorescence quenching (NPQ; i-l) in the same leaflets. All pictures taken 9 days after inoculation (Prokopová et al 2010) powdery mildews is significantly affected by host genotype and by combinations of environmental variables, including temperature, relative humidity and light. The basic conditions important for development of O. neolycopersici have also been studied (Fletcher et al 1988;Hannig 1996;Whipps and Budge 2000;Jacob et al 2008;Mieslerová and Lebeda 2010).…”

Section: Changes In Photosynthesis Of Host Plantsmentioning

confidence: 99%

“…Later attention was focused on study of resistance mechanims after infection of O. neolycopersici at the histological, biochemical and photosynthetic level (Huang et al 1998;Mieslerová et al 2004;Mlíčková et al 2004;Tománková et al 2006;Piterková et al 2009Piterková et al , 2011Prokopová et al 2010;Nožková-Hlaváčková et al, submitted). Research in the last 15 years has broadened knowledge of the genetic basis of resistance to O. neolycopersici (Lindhout et al 1994b;Ciccarese et al 1998;Huang et al 2000b;Bai et al 2003Bai et al , 2004Bai et al , 2005Li et al 2006Li et al , 2007Li et al , 2008Li et al , 2012Seifi et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Resistance mechanisms of wild tomato germplasm to infection of Oidium neolycopersici

et al. 2013

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Tomato powdery mildew (Oidium neolycopersici) is one of the most devastating diseases of cultivated tomatoes worldwide. Although the first epidemics were recorded more than 25 years ago many aspects of this host-pathogen interaction are still not well understood. Detailed morphological and molecular studies of the anamorphs confirmed that O. neolycopersici is phylogeneticaly close to Erysiphe aquilegiae var. ranunculi. Host range is rather broad, apart from Solanaceae hosts were found in the families Apocynaceae, Campanulaceae, Crassulaceae, Cistaceae, Cucurbitaceae, Linaceae, Malvaceae, Papaveraceae, Pedialiaceae, Scrophulariaceae, Valerianaceae a Violaceae. Non-host resistance within these families is not based on inhibition of formation of primary haustorium, however, on post-haustorial hypersensitive reponse and another type of non-hypersensitive resistance. Screening of wild Solanum species (previous Lycopersicon spp.) germplasm revealed valuable sources of resistance (S. habrochaites, S. pennellii, S. cheesmaniae, S. chilense, S. peruvianum). The main resistance mechanism was found to be a hypersensitive response (HR), in some cases followed by limited development of the pathogen. However, there is a broad variation in resistance response on the histological and cytological level. Interaction between many wild Solanum spp. and O. neolycopersici is race-specific, at least three races were differentiated. In some interspecific crosses (S. lycopersicum × S. habrochaites) adult plant resistance was observed. Biochemical studies focusing on production of reactive oxygen species (ROS) and peroxidase activity during infection of O. neolycopersici showed that production of ROS and activity of corresponding enzymes is related to activation of defence responses in genotypes of wild Solanum sect. Lycopersicon. The significance of nitric oxide (NO) in O. neolycopersici pathogenesis was supported by experiments with NO donors and scavengers. In moderately resistant genotype S. chmielewskii, treatment by heat stress caused slight deceleration of pathogen development, increased production of jasmonic acid (JA) and abscisic acid (ABA) and increased peroxidase activity in infected plants. The different degree of tomato resistance/ susceptibility did not markedly change the rate and extent of photosynthetic response to O. neolycopersici; only minimal impairment of photosynthesis was found in both susceptible and moderately resistant genotypes during the Harper Adams University, Newport, Shropshire TF10 8NB, UK first 9 days after inoculation. The accumulated evidence confirm a crucial role of localised increased production of ROS and reactive nitrogen species (RNS) in response to pathogen penetration into plant tissue and its involvement in the plant resistance responses including the initiation and progression of plant cell death in host wild Solanum species. Crucial points of further research are discussed.

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Section: Changes In Photosynthesis Of Host Plantsmentioning

confidence: 92%

Section: Changes In Photosynthesis Of Host Plantsmentioning

confidence: 99%