Phytoplasma [Stolbur-subgroup (Bois Noir-BN)] infection inhibits photosynthetic pigments, ribulose-1,5-bisphosphate carboxylase and photosynthetic activities in field grown grapevine (Vitis vinifera L. cv. Chardonnay) leaves

Bertamini, M.; Nedunchezhian, N.; Tomasi, Federico; Grando, S.

doi:10.1006/pmpp.2003.0449

Cited by 74 publications

(54 citation statements)

References 43 publications

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“…A possible explanation for significant decrease in total soluble protein contents in susceptible genotypes after CLCuBuV inoculation may be due to the high level of susceptibility of these genotypes. Similar results have been reported in maize, tomato, grapevine, and apple infected with mollicutes (Favali et al 2001;Bertamini et al 2002aBertamini et al , 2002bMusetti 2010).…”

Section: Total Soluble Protein Contentsupporting

confidence: 87%

Biochemical alterations in leaves of resistant and susceptible cotton genotypes infected systemically by cotton leaf curl Burewala virus

Siddique

Akhtar

Hameed

et al. 2014

Journal of Plant Interactions

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Leaf curl disease caused by Cotton Leaf Curl Burewala virus (CLCuBuV) has been recognized as serious threat to cotton in Indian subcontinent. However, information about cotton-CLCuBuV interaction is still limited. In this study, the level of phenolic compounds, total soluble proteins, and malondialdehyde (MDA) and the activities of phenylalanine ammonia-lyase (PAL), peroxidase (POX), catalase (CAT), proteases, superoxide dismutase (SOD), and polyphenol oxidase (PPO) were studied in leaves of two susceptible (CIM-496 & NIAB-111) and two resistant (Ravi and Co Tiep Khac) cotton genotypes. Disease symptoms were mild in the resistant genotypes but were severe in highly susceptible genotypes. The results showed that phenolic compounds, proteins, PAL, POX, CAT, proteases, SOD, PPO, and MDA play an active role in disease resistance against CLCuBuV. The amount of total phenols, proteases, MDA, and PPO was significantly higher in leaves of CLCuBuV-inoculated plants of both resistant genotypes as in non-inoculated plants, and decreased in CLCuBuV-inoculated plants of both susceptible genotypes over their healthy plants. POX, protein content, SOD, and PAL activities showed lower values in resistant genotypes, while they decreased significantly in susceptible genotypes as compared to the noninoculated plants except PAL, which showed non-significant decrease. CAT was found to be increased in both susceptible and resistant genotypes with maximum percent increase in resistant genotype Ravi, as compared to non-inoculated plants. The results showed significantly higher concentrations of total phenols and higher activity of protease, MDA, SOD, and PPO in resistant genotype Ravi after infection with CLCuBuV, suggesting that there is a correlation between constitutive induced levels of these enzymes and plant resistance that could be considered as biochemical markers for studying plant-virus compatible and incompatible interactions.

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Section: Total Soluble Protein Contentsupporting

confidence: 87%

Biochemical alterations in leaves of resistant and susceptible cotton genotypes infected systemically by cotton leaf curl Burewala virus

Siddique

Akhtar

Hameed

et al. 2014

Journal of Plant Interactions

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“…The decrease in chlorophyll content (Chl a + Chl b) coupled with lower concentrations of carotenoids in infected leaves suggested a loss in the defense mechanism of plants against oxidative stress induced by the virus. The negative effects of viral and bacterial pathogens on the rate of photosynthesis were also reported by many other authors (Bertamini et al 2002;Akhkha et al 2003;Arias et al 2003). Both CPPU and TDZ depending on the concentrations applied, either stimulated or inhibited photosynthetic pigment content.…”

Section: Establishment Of Virus-free I Hawkerii Plants By Meristem-tsupporting

confidence: 72%

Elimination of TSWV from Impatiens hawkerii Bull. and regeneration of virus-free plant

Milošević¹,

Subotić²,

Bulajić³

et al. 2001

Electron. J. Biotechnol.

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The possibility for obtaining virus free plants from Impatiens hawkerii Bull. shoots infected with Tomato spotted wilt virus (TSWV) through meristem-tip culture was examined. TSWV presence in I. hawkerii plants was detected by DAS-ELISA and RT-PCR and identification of the virus was confirmed by sequencing one of the chosen isolate (GenBank Accesion CQ132190). Meristem-tip explants (0.3-1.5 mm) from virus-infected shoots are cultured on MS media supplemented with different concentrations of the cytokinins, CPPU or TDZ (0.01-1.0 µM), respectively. Using this system, a large number of in vitro shoots could be produced from a single explant. Also, cytokinins showed a stimulatory effect on the length, fresh and dry weights of the newly formed shoots. Plant pigments content in I. hawkerii shoots increased significantly in the presence of cytokinins. Rooting of shoots was spontaneous on the same media. Rooted plantlets were transferred to soil where 97% successfully acclimatized. By DAS-ELISA and RT-PCR, 80% of the in vitro plantlets were shown to be a virus-free. Considering these, the present protocol seems to be an efficient method for in vitro generation of virus-free I. hawkerii plantlets by meristem tip cultures.

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“…The leaves have interveinal islands of chlorotic and yellowish tissue, which later becomes necrotic. Leaf chlorosis caused by esca suggests that photosynthesis may be perturbed (Bertamini et al, 2002).…”

mentioning

confidence: 99%

Gas Exchange, Stem Water Potential and Xylem Flux on Some Grapevine Cultivars Affected by Esca Disease

Andreini

Caruso

Bertolla

et al. 2016

SAJEV

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The effect of esca disease on gas exchange, stem water potential and xylem flux of adult grapevines of Cabernet Sauvignon, Sangiovese and Trebbiano cultivars was studied over three growing seasons. Water relations were measured at véraison and cluster ripening on three types of vines: i) healthy (control); ii) symptomatic and iii) apparently healthy in the year of measurements but that had showed esca symptoms in the previous season. Xylem flux was determined on cane segments by perfusion using a tracing dye before and after the appearance of esca symptoms. Esca induced a marked reduction (about 70%) in carbon assimilation and stomatal conductance, especially in Cabernet Sauvignon and Sangiovese. Esca did not affect the stem water potential. Gas exchange parameters measured before the symptoms appeared in plants affected by esca were similar to those of healthy plants. Measurements made one month before the appearance of the symptoms cannot be used as screening method to determine whether the vine will show esca. No differences in dye translocation were found before the symptoms' appearance. However, a decrease in xylem flux was measured in symptomatic vines of Cabernet Sauvignon. After the appearance of esca symptoms, only the Trebbiano had a lower xylem flux than the healthy vines.

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Phytoplasma [Stolbur-subgroup (Bois Noir-BN)] infection inhibits photosynthetic pigments, ribulose-1,5-bisphosphate carboxylase and photosynthetic activities in field grown grapevine (Vitis vinifera L. cv. Chardonnay) leaves

Cited by 74 publications

References 43 publications

Biochemical alterations in leaves of resistant and susceptible cotton genotypes infected systemically by cotton leaf curl Burewala virus

Biochemical alterations in leaves of resistant and susceptible cotton genotypes infected systemically by cotton leaf curl Burewala virus

Elimination of TSWV from Impatiens hawkerii Bull. and regeneration of virus-free plant

Gas Exchange, Stem Water Potential and Xylem Flux on Some Grapevine Cultivars Affected by Esca Disease

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