Article
Plant Sciences
Jorge Lora, Andres Garcia-Lor, Pablo Aleza
Summary: Seedlessness is a crucial agronomic trait in mandarins, and creating triploid plants is an important strategy for developing new seedless citrus varieties. However, little is known about the key steps of pollen development in polyploids. A study was conducted to investigate the effect of ploidy level on pollen development in diploid and tetraploid genotypes. The findings revealed significant differences in cell area, shape, starch hydrolysis, and carbohydrate accumulation during microgametogenesis, which resulted in the infertility of pollen grains in tetraploid Clemenules clementine. This poses challenges in using tetraploid genotypes as male parents for hybridization in order to produce large progenies of triploid hybrids.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Computer Science, Information Systems
Emrah Donmez, Serhat Kilicarslan, Cemil Kozkurt, Aykut Diker, Fahrettin Burak Demir, Abdullah Elen
Summary: New breeding techniques for maize are needed due to population growth and climatic change. This study proposes a hybrid model using deep features and image patches to automatically recognize haploid and diploid maize seeds. The results show high accuracy and low processing complexity, suggesting the need for further research.
MULTIMEDIA SYSTEMS
(2023)
Article
Biology
Sean Akira Montgomery, Tetsuya Hisanaga, Nan Wang, Elin Axelsson, Svetlana Akimcheva, Milos Sramek, Chang Liu, Frederic Berger
Summary: This study investigates gene dosage control in the short-lived diploid embryo of the plant Marchantia polymorpha. It reveals that paternal chromosomes are repressed throughout embryogenesis, resulting in functional haploidy. The findings demonstrate the importance of maintaining haploid gene dosage through genomic imprinting during embryonic development.
Article
Biochemistry & Molecular Biology
Marc Krasovec, Masakazu Hoshino, Min Zheng, Agnieszka P. Lipinska, Susana M. Coelho
Summary: The spontaneous mutation rate mu is a crucial parameter to understand evolution and biodiversity, and it is highly variable across species due to selection, drift, and species life cycle. We sequenced genomes of brown algae Ectocarpus sp.7 and Scytosiphon to estimate the mutation rate of these complex multicellular eukaryotes and evaluate the impact of their life cycle. Our findings suggest that the haploid-diploid life cycle and asexual reproduction may be key drivers of the low mutation rate in these organisms.
MOLECULAR BIOLOGY AND EVOLUTION
(2023)
Article
Plant Sciences
D. Zumel, X. Dieguez, O. Werner, M. C. Moreno-Ortiz, J. Munoz, R. M. Ros
Summary: Endoreduplication, a common process in plants, is related to plastic responses to stress factors. This study investigated the level of endoreduplication in Ceratodon mosses and found higher endoreduplication index in the haploid cytotypes. The haploid cytotypes exhibited higher endoreduplication index during hot and dry periods, while the diploid cytotype showed no seasonal difference.
Article
Plant Sciences
Bilge Aydin, Hafize Yuca, Songul Karakaya, Gulnur Eksi Bona, Gamze Goger, Enes Tekman, Aydan Acar Sahin, Oksana Sytar, Ayse Civas, Deniz Canli, Nur Munevver Pinar, Zuhal Guvenalp
Summary: In this study, the antimicrobial, antioxidant, and antidiabetic activities of different parts of Scilla siberica subsp. armena were examined. The findings showed that the methanolic extracts of this plant exhibited good antimicrobial and antioxidant activities, as well as strong inhibitory effects on diabetes.
Article
Biochemistry & Molecular Biology
Matthew M. Edwards, Michael Zuccaro, Ido Sagi, Qiliang Ding, Dan Vershkov, Nissim Benvenisty, Dieter Egli, Amnon Koren
Summary: The study found differences in DNA replication timing between haploid human embryonic stem cells and diploid cells, with unique features of delayed replication in certain genomic regions, especially the X Chromosome. The dosage effect of active X Chromosomes may affect the speed of chromosomal replication.
Article
Plant Sciences
Sameer Patil, Sushil Kumar Singh
Summary: This study confirms that Scilla viridis is a synonym of Drimia indica, and designates a new lectotype for Drimia indica and rectifies errors in the lectotype of Drimia coromandeliana.
NORDIC JOURNAL OF BOTANY
(2021)
Article
Plant Sciences
Martin Mau, Tiina Liiving, Liza Fomenko, Richard Goertzen, Dorota Paczesniak, Laura Bottner, Timothy F. Sharbel
Summary: The study explored the reproductive diversity of the genus Boechera and found that hybridization can trigger the transition to apomixis, with the transmission of apomixis influenced by pollen type and mating system. Apomixis can occur through various pathways, leading to the formation of polyploids.
Article
Agronomy
Kiichi Yasuda, Masaki Yahata, Mai Sato, Miki Sudo, Akiyoshi Tominaga, Hisato Kunitake
Summary: The parental genome construction and polyploidization processes in two intergeneric hybrids were clarified through SSR genotyping and CMA karyotype compositions. These hybrids may have originated from a 2n unreduced gamete of Meiwa kumquat, showing intermediate horticultural traits but with fruit sizes and flowering habits more similar to Meiwa kumquat.
Article
Biochemistry & Molecular Biology
Bo Liu, Sui Wang, Xiaoyan Tao, Caixia Liu, Guanzheng Qu, Quanwen Dou
Summary: The study conducted molecular karyotype analysis of the poplar hybrid P. xiaohei and derived doubled haploids using FISH technology, revealing differential hybridization patterns between chromosomes. The doubled haploid showed an additional hybridization site on chromosome 14 compared to the hybrid, suggesting potential chromosome transfer between the two. The variations in chromosome patterns between the hybrid and doubled haploid indicate genetic mechanisms at play in chromosomal variation in P. xiaohei.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biotechnology & Applied Microbiology
Dora Certnerova, Martin Certner, Pavel Skaloud
Summary: This study investigates the life cycle of unicellular chrysophyte algae and reveals a haploid-diploid life cycle with synchronized life stage transitions. The study provides new insights into the biology of unicellular eukaryotes.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Biochemical Research Methods
Yao Xiong, Hui Zhang, Sijie Zhou, Lu Ma, Wenhai Xiao, Yi Wu, Ying-Jin Yuan
Summary: Variations and adaptations of chromosome ends are crucial for eukaryotic karyotype evolution. This study used the SCRaMbLE strategy to create a library of synthetic strains with variations in chromosome ends. Analysis of the survivors revealed four adaptation routes, including homologous recombination, site-specific recombination, circularization of chromosomes, and loss of whole chromosomes. The study provides insights into karyotype evolution from the perspective of synthetic genomics.
ACS SYNTHETIC BIOLOGY
(2023)
Review
Plant Sciences
Ivan Maryn Marin-Montes, Juan Enrique Rodriguez-Perez, Alejandrina Robledo-Paz, Eulogio de la Cruz-torres, Aureliano Pena-Lomeli, Jaime Sahagun-Castellanos
Summary: This review evaluates the potential of gynogenesis as a breeding method for tomatoes. By presenting successful cases of gynogenesis, the authors suggest that these methods can be used to obtain doubled haploids in tomato breeding programs.
Article
Microbiology
Qiushi Zheng, Jing Liu, Juanxiu Qin, Bingjie Wang, Jian Bing, Han Du, Min Li, Fangyou Yu, Guanghua Huang
Summary: This study reports the population structure and ploidy states of 500 clinical isolates of Candida glabrata from China. Surprisingly, the ploidy of a subset of clinical isolates varied dramatically, with some able to switch to aneuploid, diploid, or hyperdiploid forms. Cells with different ploidy in C. glabrata exhibited differences in morphology, antifungal susceptibility, virulence, and global gene expression profile. Ploidy switching could be a strategy for rapid adaptation to environmental changes and an alternative to sexual reproduction in this fungus.
Article
Cell Biology
Indranil Santra, Sk Moquammel Haque, Biswajit Ghosh
Article
Biochemistry & Molecular Biology
Bibhuti Bhusan Champati, Bhuban Mohan Padhiari, Asit Ray, Tarun Halder, Sudipta Jena, Ambika Sahoo, Basudeba Kar, Pradeep Kumar Kamila, Pratap Chandra Panda, Biswajit Ghosh, Sanghamitra Nayak
Summary: This study used a multilayer perceptron artificial neural network to investigate the abiotic factors affecting the andrographolide content of Andrographis paniculata and select suitable cultivation sites with high andrographolide content. The results showed that nitrogen, phosphorus, and potassium were the predominant factors influencing the andrographolide content.
Article
Plant Sciences
Bhuban Mohan Padhiari, Asit Ray, Bibhuti Bhusan Champati, Sudipta Jena, Ambika Sahoo, Ananya Kuanar, Tarun Halder, Biswajit Ghosh, Pradeep Kumar Naik, Jeetendranath Patnaik, Sujata Mohanty, Pratap Chandra Panda, Sanghamitra Nayak
Summary: The aim of this research is to study the drug environment interactions and predict the bacoside A content in Bacopa monnieri using an artificial neural network model. The results showed that the multilayer perceptron neural network with a single hidden layer and 11 neurons had the highest prediction accuracy. Sensitivity analysis indicated that nitrogen levels and altitude had the greatest impact on bacoside A content. The ANN model demonstrated a prediction accuracy of 93.60% when tested at a new geographical location.
Article
Biotechnology & Applied Microbiology
Avijit Chakraborty, Sk Moquammel Haque, Debasish Ghosh, Diganta Dey, Swapna Mukherjee, Dilip K. Maity, Biswajit Ghosh
Summary: This study describes an eco-friendly method for green synthesis of silver nanoparticles and investigates their antimicrobial activity. The results show that silver nanoparticles exhibit higher inhibition potential against pathogenic bacteria compared to plant extracts.
Article
Biotechnology & Applied Microbiology
Tarun Halder, Biswajit Ghosh
Summary: Physalis minima L. is an important medicinal plant with various medicinal properties, including anticancer activity. This study established the hairy root culture of this plant and used elicitors to increase the production of withaferin A, a high-value steroidal lactone.
PLANT CELL TISSUE AND ORGAN CULTURE
(2023)
Review
Biodiversity Conservation
Avijit Chakraborty, Indranil Santra, Sk Moquammel Haque, Biswajit Ghosh
Summary: The ginger family, known as Zingiberaceae, has significant economic value as medicine, spices, dyes, and perfumeries. India has rich biodiversity of ginger plants, with 22 genera and about 176 species. The Northeast region of India has the highest diversity, containing 19 genera and about 88 species. However, the increasing demand for gingers has led to overexploitation, habitat destruction, and land crisis, posing threats to wild gingers. Some species in this family have become rare, endangered, and critically endangered. Plant tissue culture is crucial for large-scale production and conservation of rare plant genotypes, and different in vitro propagation approaches are the best alternatives for Indian gingers.
BIODIVERSITY AND CONSERVATION
(2023)
Article
Cell Biology
Sk Moquammel Haque, Indranil Santra, Biswajit Ghosh
Summary: This study reveals that the cell division in the microspores of Allium cepa and Aloe vera is normal, with chromosome numbers of 8 and 7, respectively, which are half the number of their sporophytic plants.
Article
Biotechnology & Applied Microbiology
Indranil Santra, Biswajit Ghosh
Summary: The plant Plumbago zeylanica L. is in high demand for its medicinal benefits, particularly its anticancerous activities. However, excessive harvesting threatens its natural habitat. In vitro cultivation is proposed as a sustainable alternative for production. Aromatic cytokinin meta-topolin (mT) was found to enhance biomass production.
Article
Plant Sciences
Avijit Chakraborty, Diptesh Biswas, Indranil Santra, Suproteem Mukherjee, Kumaresh Bera, Biswajit Ghosh
Summary: Artemisia vulgaris, a medicinally important plant, has been used traditionally for chronic diseases. The essential oil and leaf extract of this plant were used for the first time to control multi-drug-resistant urinary tract-infecting bacterial pathogens, showing significant antibacterial activity. The ex vitro plants exhibited higher extract and essential oil content compared to the in situ plants. The use of meta-topolin for in vitro regeneration resulted in a higher mean shoot number. Gas-chromatography mass spectroscopy analysis of the essential oil detected several compounds of bio-significance.
IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY-PLANT
(2023)
Review
Multidisciplinary Sciences
Diptesh Biswas, Sk. Moquammel Haque, Biswajit Ghosh
Summary: The increasing world population, antibiotic resistance, and emerging diseases have highlighted the importance of underutilised plants as natural resources for nutrition and medicine. The Solanaceae vegetable family includes several medicinal plants, such as Solanum sisymbriifolium, which has been used for its edible fruits and traditional remedies by indigenous people. Despite its invasive nature and disease resistance, this plant is not widely exploited globally due to a lack of knowledge about its utilities. This review summarizes published reports on the biology and beneficial features of S. sisymbriifolium, confirming its medicinal and nutritional properties, and aims to popularize it as a future source of nutrition and pharmaceuticals.
PROCEEDINGS OF THE INDIAN NATIONAL SCIENCE ACADEMY
(2023)
Article
Biotechnology & Applied Microbiology
Avijit Chakraborty, Sk Moquammel Haque, Diganta Dey, Swapna Mukherjee, Biswajit Ghosh
Summary: The present study successfully synthesized silver nanoparticles and evaluated their antimicrobial activity. The results showed that both the nanoparticles and plant extracts exhibited significant inhibition against multiple drug-resistant pathogens, indicating their strong antimicrobial activity. These findings suggest that the plant extracts of K. angustifolia and the synthesized nanoparticles may have potential as drugs for treating multidrug-resistant human pathogenic bacteria.
JOURNAL OF GENETIC ENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Tarun Halder, Biswajit Ghosh
Summary: This study evaluated the content of withaferin A in Physalis minima and selected an elite clone for in vitro shoot multiplication. Meta-Topolin was found to be effective in triggering multiple shoots and shoot growth. The genetic and phytochemical stability of micropropagated plants were confirmed through cytological and molecular marker-based selection as well as HPLC analysis.
BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY
(2021)