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Tripathi, Savarni; Varma, Anupam

doi:10.1023/a:1021582417062

Cited by 28 publications

(2 citation statements)

References 32 publications

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“…In present study we also observed the higher number of whiteflies (more than 10 per plant) throughout the experimental period which caused severe disease. The low level of disease exhibited by A-555 at field level may be due to the inability of whitefly to introduce a sufficient quantity of virus particles into the plants to cause a severe disease response as reported earlier in case of tomato against tomato leaf curl geminivirus and in case of non-Bt Gossypium specie against CLCuBuV (Akhtar et al, 2010; Tripathi and Varma 2002). Under field conditions, natural infection may not produce accurate results even if the studies are conducted in field with high vector populations (Sudha et al, 2013).…”

Section: Resultsmentioning

confidence: 75%

Evaluation of Bt-cotton Genotypes for Resistance to Cotton Leaf Curl Disease under High Inoculum Pressure in the Field and Using Graft Inoculation in Glasshouse

Akhtar

Hussain

Mahmood-ul-Hassan

et al. 2015

The Plant Pathology Journal

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Bt-cotton germplasm, consisting of 75 genotypes was evaluated against cotton leaf curl disease (CLCuD) under high inoculum pressure in the field and using graft inoculation in glasshouse by visual symptom scoring assessments. None of the tested genotype was found disease free under both evaluation tests. Under field conditions in 2011, 3 genotypes were found resistant, 4 moderately resistant, 3 tolerant, 2 moderately susceptible and one susceptible; in 2012, 3 genotypes were tolerant, 7 moderately susceptible, 5 susceptible and 38 highly susceptible; in 2013, one was moderately susceptible and 51 were highly susceptible with varying degree of percent disease index (PDI) and severity index (SI). However, through graft evaluation in glasshouse, none of the graft inoculated plant was symptomless. All tested genotypes showed disease symptoms with SI values ranging between 5.0 and 6.0, and latent period between 12 and 14 days. Of the 75 genotypes evaluated using graft inoculation, 11 were found susceptible with SI values of 5.0 to 5.4 while remaining 64 were highly susceptible with SI values of 5.5 to 6.0. Inoculated plants of all tested genotypes exhibited severe disease symptoms within 10 days after the appearance of initial symptoms. No reduction in SI value was observed until the end of the experiment i.e., 90 days after grafting. Information generated under the present study clearly demonstrates that no sources of resistance to CLCuD are available among the tested Bt-cotton genotypes. So, a breeding programme is needed to introgress the CLCuD-resistance from other resistant sources to agronomically suitable Bt-cotton genotypes.

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Section: Resultsmentioning

confidence: 75%

Evaluation of Bt-cotton Genotypes for Resistance to Cotton Leaf Curl Disease under High Inoculum Pressure in the Field and Using Graft Inoculation in Glasshouse

Akhtar

Hussain

Mahmood-ul-Hassan

et al. 2015

The Plant Pathology Journal

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“…Several studies have analyzed how genotypic and environmental factors influence disease outcomes [ 25 , 26 , 27 , 28 ] in cassava [ 29 , 30 ], tomatoes [ 26 , 31 ], as well as in grapevines [ 22 , 32 ]. Since grapevine rootstocks can impact grapevine physiology and metabolism, they contribute to plant-pathogen interactions [ 19 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Investigating Grapevine Red Blotch Virus Infection in Vitis vinifera L. cv. Cabernet Sauvignon Grapes: A Multi-Omics Approach

Rumbaugh

Durbin‐Johnson

Padhi

et al. 2022

IJMS

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Grapevine red blotch virus (GRBV) is a recently identified virus. Previous research indicates primarily a substantial impact on berry ripening in all varieties studied. The current study analyzed grapes’ primary and secondary metabolism across grapevine genotypes and seasons to reveal both conserved and variable impacts to GRBV infection. Vitis vinifera cv. Cabernet Sauvignon (CS) grapevines grafted on two different rootstocks (110R and 420A) were analyzed in 2016 and 2017. Metabolite profiling revealed a considerable impact on amino acid and malate acid levels, volatile aroma compounds derived from the lipoxygenase pathway, and anthocyanins synthesized in the phenylpropanoid pathway. Conserved transcriptional responses to GRBV showed induction of auxin-mediated pathways and photosynthesis with inhibition of transcription and translation processes mainly at harvest. There was an induction of plant-pathogen interactions at pre-veraison, for all genotypes and seasons, except for CS 110R in 2017. Lastly, differential co-expression analysis revealed a transcriptional shift from metabolic synthesis and energy metabolism to transcription and translation processes associated with a virus-induced gene silencing transcript. This plant-derived defense response transcript was only significantly upregulated at veraison for all genotypes and seasons, suggesting a phenological association with disease expression and plant immune responses.

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Agroinoculation: A Simple Procedure for Systemic Infection of Plants with Viruses

Vaghchhipawala

Mysore

2008

Plant Virology Protocols

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Plant-virus interaction studies, for long, plagued by asynchronous/failed infections, have improved since the usage of Agrobacterium as a delivery agent for viral genomes. Popularly known as "agroinoculation," this method has revolutionized plant virology studies, leading to identification of viruses as casual agents of disease, viral genome mutagenesis and recombination analyses, and virus-induced gene silencing (VIGS) applications. We present here a brief overview of the recent applications of this method and a detailed protocol for agroinoculation and VIGS used in our laboratory.

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Untitled

Cited by 28 publications

References 32 publications

Evaluation of Bt-cotton Genotypes for Resistance to Cotton Leaf Curl Disease under High Inoculum Pressure in the Field and Using Graft Inoculation in Glasshouse

Evaluation of Bt-cotton Genotypes for Resistance to Cotton Leaf Curl Disease under High Inoculum Pressure in the Field and Using Graft Inoculation in Glasshouse

Investigating Grapevine Red Blotch Virus Infection in Vitis vinifera L. cv. Cabernet Sauvignon Grapes: A Multi-Omics Approach

Agroinoculation: A Simple Procedure for Systemic Infection of Plants with Viruses

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