Article
Biotechnology & Applied Microbiology
Susan G. Ndiaye, Celeste Welty
Summary: An experiment was conducted to determine the effectiveness of augmentative biological control on twospotted spider mite populations in hop yards. The study showed that naturally occurring predators can effectively suppress low to moderate densities of the mites, while the augmentation of predatory mites did not consistently have a beneficial effect on yields.
BIOLOGICAL CONTROL
(2022)
Article
Agronomy
Sudeshna Thakur, A. K. Sood
Summary: The study evaluated the efficacy of locally prepared bioacaricides against Tetranychus urticae and their impact on cucumber fruit yield. The results showed that preventive spray of bioacaricides can reduce mite population levels and also increase cucumber yield.
Article
Agronomy
Dilip Shriram Ghongade, Ajay Kumar Sood
Summary: The damage potential of two-spotted spider mite on parthenocarpic cucumber was evaluated under different feeding durations and densities, showing significant impact on plant growth and marketable yield. A negative relationship was found between cumulative mite days and yield reduction, with economic injury levels varying based on infestation timing and mite density.
Article
Plant Sciences
Shilpa Devi, Parva Kumar Sharma, Tusar Kanti Behera, Sarika Jaiswal, G. Boopalakrishnan, Khushboo Kumari, Neha Kumari Mandal, Mir Asif Iquebal, S. Gopala Krishnan, Chandrika Bharti, Chandrika Ghosal, Anilabha Das Munshi, Shyam Sundar Dey
Summary: Parthenocarpy is an important trait that revolutionized cucumber cultivation worldwide. Understanding its genetics and developing molecular markers will facilitate the introgression of parthenocarpic traits into different germplasm and elite varieties.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Entomology
Jiachen Wang, Yang Cao, Bin Lai, Yongshuai Liu, Chao Li, Chunya Bu
Summary: In this study, a selective AChE inhibitor against Tetranychus urticae was discovered through structure-based virtual screening. The compound showed control effects on T. urticae without toxicity to non-target organisms and without affecting strawberry growth. This compound has the potential to be developed as a novel acaricide with reduced nontarget toxicity.
JOURNAL OF INSECT SCIENCE
(2023)
Article
Multidisciplinary Sciences
Nicolas Bensoussan, Maja Milojevic, Kristie Bruinsma, Sameer Dixit, Sean Pham, Vinayak Singh, Vladimir Zhurov, Miodrag Grbic, Vojislava Grbic
Summary: Environmental RNAi is an effective tool for reverse genetics studies and pest control. Application of dsRNAs targeting specific genes can lead to phenotypic changes in the spider mite. Histological analysis showed that the efficiency of orally-delivered dsRNAs is localized to gut tissues in T. urticae.
SCIENTIFIC REPORTS
(2022)
Article
Biochemistry & Molecular Biology
Jiao Zhu, Giovanni Renzone, Simona Arena, Francesca Romana Dani, Harald Paulsen, Wolfgang Knoll, Christian Cambillau, Andrea Scaloni, Paolo Pelosi
Summary: Spider mites, major agricultural pests, have been found to possess a new class of odorant-binding proteins (OBPs) which differ from those of insects. The OBPs in T. urticae show unique characteristics in terms of their conserved cysteines and three-dimensional protein folding.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Plant Sciences
Emilie Widemann, Kristie Bruinsma, Brendan Walshe-Roussel, Cristina Rioja, Vicent Arbona, Repon Kumer Saha, David Letwin, Vladimir Zhurov, Aurelio Gomez-Cadenas, Mark A. Bernards, Miodrag Grbic, Vojislava Grbic
Summary: Arabidopsis defenses against T. urticae are complex, involving multiple indole glucosinolates, specific myrosinases, and additional JA-regulated defenses.
Article
Plant Sciences
Gara Romero-Hernandez, Manuel Martinez
Summary: The study demonstrates the opposite roles of MAPKKK17 and MAPKKK21 in the plant response to mite attack. MAPKKK17 acts as a positive regulator, while MAPKKK21 is a negative regulator. The expression of these two kinases is interdependent and they are coexpressed with different sets of genes.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Genetics & Heredity
Chenxing Gou, Pinyu Zhu, Yongjiao Meng, Fan Yang, Yan Xu, Pengfei Xia, Jinfeng Chen, Ji Li
Summary: This study systematically identifies key loci for parthenocarpy in cucumber through investigating and evaluating 201 cucumber germplasms, and selects superior lines with strong parthenocarpy ability, providing reference for improving parthenocarpy in modern cucumber cultivars.
Article
Horticulture
Su Young Lee, Ju Young Shin, Deok Ho Kwon, Junping Xu, Jeong Ho Kim, Chang Ho Ahn, Seonghoe Jang, O. Hyeon Kwon, Hye Jin Lee, Won Hee Kim
Summary: In this study, we successfully obtained transgenic rose plants resistant to Tetranychus urticae by introducing the dsCOPB2 gene from the pest into the rose plants using an Agrobacterium-mediated transformation method. The transgenic plants showed a negative effect on the survival of T. urticae due to the high accumulation of dsCOPB2 gene, suggesting that they have potential to serve as an alternative to conventional pest control methods.
SCIENTIA HORTICULTURAE
(2022)
Article
Horticulture
Li Su, Miaoqing Wang, Yuean Wang, Rahat Sharif, Nannan Ren, Chunlu Qian, Jun Xu, Xuehao Chen, Xiaohua Qi
Summary: This study demonstrated that forchlorfenuron can successfully induce parthenocarpic fruit formation in cucumber, and the fruit treated with forchlorfenuron showed no significant difference in appearance and nutritional quality compared to pollinated fruit.
Article
Entomology
Hajar Pakyari, Remzi Atlihan
Summary: This study investigated the life table and predation rate of Scolothrips longicornis Priesner feeding on Tetranychus urticae Koch under laboratory conditions at 26 degrees C. The age-stage, two-sex life table was used to analyze the data, taking into account the varying developmental rates among individuals and sexes. The results showed that the intrinsic rate of increase (r), the finite rate of increase (λ), the net reproductive rate (R0), and the mean generation time (T) were 0.156 day(-1), 1.168 day(-1), 29.15 offspring, and 21.69 days, respectively.
JOURNAL OF APPLIED ENTOMOLOGY
(2023)
Review
Entomology
Adekunle W. Adesanya, Mark D. Lavine, Timothy W. Moural, Laura C. Lavine, Fang Zhu, Douglas B. Walsh
Summary: The two-spotted spider mite poses a constant threat to sustainable production of economically important crops globally, with management heavily reliant on synthetic acaricides, which the mite has rapidly developed resistance to. Limited studies have been conducted on genetic changes related to acaricide resistance in T. urticae, necessitating further research for successful integrated mite management programs. Understanding the temporal and spatial characteristics of acaricide-resistant phenotypes and their underlying mechanisms is crucial for designing effective resistance management programs within various agroecosystems.
JOURNAL OF PEST SCIENCE
(2021)
Article
Agronomy
Sharon Warburg, Mosaab Yahyaa, Tamar Lahav, Shlomit Medina, Shiri Freilich, Shira Gal, Eric Palevsky, Moshe Inbar, Mwafaq Ibdah
Summary: The study found that citrus resistance to T. urticae is induced by UV radiation, with a significant reduction in spider mite density on seedlings exposed to solar UV. The leaves contain numerous volatile compounds, many of which are known to be herbivore-induced and/or UV enhanced.
Article
Food Science & Technology
Pallavi Sharma, S. R. Sharma, R. K. Dhall, T. C. Mittal, Prasad Chavan
Summary: This study investigated the shelf-life extension of minimally processed onion rings in different packages treated with gamma irradiation. The results showed that polypropylene packaging with perforations and gamma irradiation at 1.5 kGy was the most suitable method for maintaining the quality and microbial safety of minimally processed onion rings.
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2022)
Article
Agronomy
Karina Barboza, Maria Cecilia Salinas, Maria Belen Perez, Rajinder Kumar Dhall, Pablo Federico Cavagnaro
Summary: The study revealed that the traits associated with garlic functional value and postharvest quality are influenced by both genetic and environmental factors, with pyruvate, phenolics, and solids content varying significantly among different cultivars and locations. Environmental effects and genotype x environment interactions play a significant role in the variation of these traits.
Article
Multidisciplinary Sciences
Harleen Kaur, Pooja Manchanda, Pankaj Kumar, Rajinder Kumar Dhall, Parveen Chhuneja, Yiqun Weng
Summary: This study identified 35 parthenocarpy-related genes in cucumber and explored their genetic makeup through phylogenetic analysis, exon-intron structure analysis, cis-regulatory element analysis, and conserved domain analysis. The study also designed 31 SSR markers and identified three SSRs in two polymorphic genes. Expression analysis of selected genes revealed that CsWD40 and CsPIN-4 could be potential genes for determining parthenocarpy in cucumber.
SCIENTIFIC REPORTS
(2023)
Review
Genetics & Heredity
R. K. Dhall, Harleen Kaur, Pooja Manchanda
Summary: Cucumber is an important vegetable crop with an accessible genome, which has greatly sped up research in molecular genetics. Various methodologies have been employed by cucumber breeders to enhance the yield and quality of the crop, including disease resistance enhancement, use of gynoecious sex types, alterations in plant architecture, and genetic variability enhancement. Understanding the genetics and molecular mapping of sex expression in cucumbers can greatly benefit breeders and scientists working on crop improvement.
FRONTIERS IN GENETICS
(2023)
Review
Plant Sciences
Hira Singh, Bhallan Singh Sekhon, Pradeep Kumar, Rajinder Kumar Dhall, Ruma Devi, Tarsem Singh Dhillon, Suman Sharma, Anil Khar, Ramesh Kumar Yadav, Bhoopal Singh Tomar, Theodora Ntanasi, Leo Sabatino, Georgia Ntatsi
Summary: To address challenges such as climate change, food insecurity, and population growth, the development of hybrid vegetable crops is crucial. Genetic mechanisms like self-incompatibility, male sterility, and gynoecism play a vital role in reducing costs and streamlining hybrid seed production. This review focuses on elucidating processes related to floral characteristics, genetic regulation, pollen biology, and development, with specific attention to masculine and feminine traits in cucurbits and hybridization approaches for biofortification. It also provides insights into biotechnological advancements and their future use in major vegetable crops' genetic systems.
Article
Agronomy
Vivek Thapliyal, Rajinder Kumar Dhall, Pooja Manchanda, Harleen Kaur
Summary: The study aimed to develop parthenocarpic gynoecious cucumber hybrids suitable for poly-net house cultivation with high yields, early maturity, and appropriate fruit size for commercial production. The heterotic potential of different cross combinations and their combining ability were tested. The results showed significant differences among parental lines for various traits, indicating the role of both additive and non-additive gene action. Specific combinations and parental lines with positive heterosis and high specific combining ability effects can be used for commercial cultivation after conducting large-scale trials at different locations.
Article
Entomology
Dilip Shriram Ghongade, K. S. Sangha
Summary: Under polyhouse conditions, weekly releases of 2nd instar C. zastrowi sillemi larvae at three larvae per plant can effectively manage whitefly infestation on parthenocarpic cucumber and increase cucumber yield.
INTERNATIONAL JOURNAL OF PEST MANAGEMENT
(2023)
Review
Plant Sciences
Rajinder Kumar Dhall, Pablo F. Cavagnaro, Hira Singh, Subhankar Mandal
Summary: The center of origin of garlic is Central Asia, with its closest wild relative being Allium longicuspis. Religious writings, historical records, and ancient medical texts have all mentioned and/or prescribed the use of garlic. Recent studies have shown that garlic compounds have broad-spectrum antibacterial and antimycotic effects. Classification of garlic is based on various factors, including growth traits, morphology, genetic markers, and ecological characteristics. Although garlic is mostly propagated asexually, fertile wild garlic has been found in Kazakhstan and Kyrgyzstan. Genetic and environmental factors affecting fertility and seed production have been studied, and Bt-resistant transgenic lines have been developed. This review discusses the historical and current use of garlic, its classification, the molecular mechanisms of garlic sterility, and progress made in unlocking sexual reproduction for garlic breeding and production.
PLANT SYSTEMATICS AND EVOLUTION
(2023)
Article
Agronomy
Hardeep Kaur, Rajinder Kumar Dhall, Priti Sharma
Summary: This study aimed to assess the correlation and path analysis of 10 yield and yield attributing traits in 159 pea genotypes. Correlation analysis showed significant positive correlations between days to 50% flowering, node at which 1st pod appears, number of pods per plant, number of seeds per pod, pod length, pod weight, and days to 1st picking with total yield per plant. On the other hand, plant height and shelling percentage were negatively correlated with total yield per plant. Path analysis revealed that the number of pods per plant had the highest positive effect on yield per plant.
Article
Multidisciplinary Sciences
Rajinder Kumar Dhall, Rimaljeet Kaur, Priti Sharma, Hira Singh, Saurabh Yadav, Priyanka Kumari
Summary: The agronomic practices for mechanical harvesting of garden pea were studied, including the effects of sowing time, spacing, and sowing method on yield and its attributes. Significant interactions were observed between different factors for various traits. The results indicated that the garden pea cultivar Punjab-89 sown on 5th November at a spacing of 20 x 7.5 cm on beds resulted in the highest green pod yield.
Article
Agronomy
Deepa Beniwal, R. K. Dhall, Saurabh Yadav, Priti Sharma
Summary: Pea is an important self-pollinating crop with high protein content, but its cultivation is affected by various biotic and abiotic stresses. Rust and powdery mildew are major fungal diseases causing significant damage to pea crops worldwide. The use of disease-resistant varieties and integrating molecular tools with conventional breeding techniques can help overcome these challenges and enhance varietal development. This review provides an overview of rust and powdery mildew in pea, their impact on yield, and breeding techniques for controlling these diseases.
Article
Entomology
Jasreet Kaur Gill, K. S. Sangha, P. S. Shera, Sudhendu Sharma
Summary: This study investigated the effects of 10 different insecticides on Trichogramma chilonis and found that all tested insecticides significantly reduced the parasitism rate and emergence of adults. The insecticides were more harmful to the larval and egg stages of the parasitoid compared to the pre-pupal and pupal stages.
INTERNATIONAL JOURNAL OF TROPICAL INSECT SCIENCE
(2022)
Article
Biology
Rajinder Kumar Dhall, Shreedhari Narasimha Hegde, Pawan Kumar Malhotra
Summary: A new parthenocarpic gynoecious cucumber line was developed and different chemicals were used to induce male flowers for seed production. In vitro protocol for regeneration was standardized and the parthenocarpic gynoecious expression was found to be stable in tissue culture regenerated progenies.
BRAZILIAN ARCHIVES OF BIOLOGY AND TECHNOLOGY
(2022)
