Estimation of Genetic Divergence and Character Association Studies in Local and Exotic Diversity Panels of Soybean (Glycine max L.) Genotypes
Phyton
Plant Pan-genomes: A New Frontier in Understanding Genomic Diversity in Plants
Journal of Advances in Biology & Biotechnology
The comparison of several associated species and plant genome sequencing efforts has increased in... more The comparison of several associated species and plant genome sequencing efforts has increased in recent years. The inflated level of the genomic variety leads to the discovery that the single reference genomes may not reflect the variability in a species, resulting in the evolution of a pan-genome idea. Pan-genomes exhibit a species' genetic variability and contain mutant genes lacking in some individuals and essential genes present in all individuals. Mutant gene classifications often reveal cross-species parallels, including genes for abiotic and biotic stresses generally concentrated within mutant gene groupings. Here we discuss the history of pan-genomics in plants, investigate the causes of gene variation, deletion, and existence and demonstrate why pan-genomes might assist crop genetics and breeding research.
A well-coordinated process is required to construct a complicated structure like the cell wall, w... more A well-coordinated process is required to construct a complicated structure like the cell wall, which consists of several elements that must be joined appropriately from various sources inside the cell. In order to successfully moderate dynamic responses to developmental and environmental signals, further complexity is necessary. The plasma membrane is continually and actively transporting sugars, enzymes, and other cell wall elements throughout diffused development. Actin filaments and microtubules make up the cytoskeletal pathways used to transport cell wall elements in vesicles during cell division. In addition to these elements, other proteins, vesicles and lipids are transported from and to the cell plate while cytokinesis occurs. Adding additional cell wall material or building a new cell wall requires a rearrangement of the cytoskeleton, which we examine in this review first. We next look at the commonalities between these two processes. Our next topic is the transport of cel...
Optimum growing temperature is necessary for maximum yield-potential in any crop. The global atmo... more Optimum growing temperature is necessary for maximum yield-potential in any crop. The global atmospheric temperature is changing more rapidly and irregularly every year. High temperature at the flowering/reproductive stage in rice causes partial to complete pollen sterility, resulting in significant reduction in grain yield. Green Super Rice (GSR) is an effort to develop an elite rice type that can withstand multiple environmental stresses and maintain yield in different agro-ecological zones. The current study was performed to assess the effect of heat stress on agronomic and physiological attributes of GSR at flowering stage. Twenty-two GSR lines and four local checks were evaluated under normal and heat-stress conditions for different agro-physiological parameters, including plant height (PH), tillers per plant (TPP), grain yield per plant (GY), straw yield per plant (SY), harvest index (HI), 1000-grain weight (GW), grain length (GL), cell membrane stability (CMS), normalized dif...
This study summarizes the importance of melatonin in different plants and fungi. In this review, ... more This study summarizes the importance of melatonin in different plants and fungi. In this review, we discussed the biosynthetic pathway of melatonin, its metabolites, and its oxidative reduction. Melatonin is a molecule derived from tryptophan, with pleiotropic activity. It is present in nearly every organism. Its synthetic course depends on the organism in which it resides. The tryptophan to the melatonin pathway, for example, varies in plants and animals. It is thought that the synthetic mechanism for melatonin was inherited in eukaryotes from bacteria caused by endosymbiosis. Nevertheless, the synthetic pathways of melatonin in microorganisms are unknown. The metabolism of melatonin is exceptionally complex with these enzymatic processes developed out of cytochrome C. As well as the enzymatic degradation, melatonin is metabolized by interactive pseudoenzymes and free radicals processes.
Asian Journal of Biochemistry, Genetics and Molecular Biology
DNA methylation is a well-known epigenetic modification that is essential for gene regulation and... more DNA methylation is a well-known epigenetic modification that is essential for gene regulation and genome stability. Anomalies in plant development can result from aberrant DNA methylation patterns. DNA methylation is much more important in plants with more complicated genomes when it comes to growth and abiotic stress tolerance. Dynamic regulation via de novo methylation, maintenance of methylation, and active demethylation, which are catalysed by diverse enzymes that are targeted by different regulatory mechanisms, results in a unique DNA methylation state. We explain DNA methylation in plants, including methylating and demethylating enzymes and regulatory changes, as well as the coordination of methylation and demethylation activities by a mechanism known as the methylstat. We also explain the roles of DNA methylation in regulating transposon silencing, gene expression, and chromosome interactions, as well as the intervention of DNA methylation in plant responses to biotic and abi...
Rice (Oryza sativa) is an important staple food crop worldwide, especially in east and southeast ... more Rice (Oryza sativa) is an important staple food crop worldwide, especially in east and southeast Asia. About one-third of rice cultivated area is under saline soil, either natural saline soils or irrigation with brackish water. Salinity stress is among the devastating abiotic stresses that not only affect rice growth and crop productivity but also limit its cultivation area globally. Plants adopt multiple tolerance mechanisms at the morphological, physiological, and biochemical levels to tackle salinity stress. To identify these tolerance mechanisms, this study was carried out under both a controlled glass house as well as natural saline field conditions using 22 green super rice (GSR) lines along with two local varieties (“IRRI 6 and Kissan Basmati”). Several morpho-physiological and biochemical parameters along with stress-responsive genes were used as evaluation criteria under normal and salinity stress conditions. Correlation and Principal Component Analysis (PCA) suggested that...
Crop plant architecture is an important agronomic trait that contributes greatly to crop yield. T... more Crop plant architecture is an important agronomic trait that contributes greatly to crop yield. Tiller angle is one of the most critical components that determine crop plant architecture, which in turn substantially affects grain yield mainly owing to its large influence on plant density. Gravity is a fundamental physical force that acts on all organisms on earth. Plant organs sense gravity to control their growth orientation, including tiller angle in rice (Oryza sativa). This review summarizes recent research advances made using rice tiller angle as a research model, providing insights into domestication of rice tiller angle, genetic regulation of rice tiller angle, and shoot gravitropism. Finally, we propose that current discoveries in rice can shed light on shoot gravitropism and improvement of plant tiller angle in other species, thereby contributing to agricultural production in the future.
Direct seeding (DS) of rice gained much attention due to labor scarcity and unavailability of wat... more Direct seeding (DS) of rice gained much attention due to labor scarcity and unavailability of water. However, reduced emergence and poor seedling establishment are the main problems of DS which causes significant yield losses. Herein, DS-associated seedling traits of three major rice groups, i.e., Indica (Ind), Japonica (Jap), and aus-type (Aus), were evaluated by using an improved mesocotyl elongation assay. The associations among different traits at the seedling and maturity stage were also studied. Significant variation was observed among the cultivars of different rice groups. The Aus group cultivars showed higher mean values for coleoptile (C, 3.85 cm), mesocotyl (MC, 4.17 cm), shoot length (SL, 13.64 cm), panicle length (PL, 23.44 cm), tillers number (T, 15.95), culm length (CL, 105.29 cm), and plant height (PH, 128.73 cm), while the Indica and Japonica groups showed higher mean values of grain length (GL, 8.69 mm), grain length/width ratio (GL/WR, 3.07), and grain width (GW, ...
Asian Journal of Biochemistry, Genetics and Molecular Biology
Over the last few years, the use of clustered regularly interspaced short palindromic repeats (CR... more Over the last few years, the use of clustered regularly interspaced short palindromic repeats (CRISPR) for genetic manipulation has transformed life science. CRISPR was first found in bacteria and archaea as an adaptable immune system, and later modified to create specific DNA breaks in living cells and creatures. Various DNA alterations can occur throughout the cellular DNA repair process. Since the first demonstration of CRISPR in plant genome editing in 2013, there has been much progress in fundamental crop research and plant improvement. Plants can use the CRISPR toolset to do programmable genome editing, epigenome editing, and transcriptome regulation. However, the difficulties of plant genome editing must be properly understood and answers sought. With an emphasis on achievements and prospective utility in plant biology, this review aims to provide an instructive assessment of the current advancements and discoveries in CRISPR technology. CRISPR will, in the end, not only make...
Uploads
Papers by Syed Ali Zafar