Plants adapt to hostile environmental condition through specialized cellular processes which require coordinated regulation of multiple transport mechanisms. Low-affinity cation transporter (LCT) 1 is a membrane transporter gene exclusive only to members of the grass family, and the rice genome contained only one copy of the gene. Accumulating evidence highlighted the important role of this gene in the regulation of various cations transport into the plant cells including heavy metals. To further characterize the role of this membrane transporter
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Abiotic and biotic stresses adversely affect rice (
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Rapeseed is a member of family Brassicaceae, cultivated as oil crop. Rapeseed oil is being utilized from early civilization, but its popularity being declined from the mid-nineteenth century due to presence of erucic acid (C22:1) and glucosinolates. Thereby, several attempts have been made to develop cultivars free from those toxins. In the past 20 years, breeders got success in developing ‘00’-quality rapeseed, known as ‘Canola’. The target mutagenesis of
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MADS-box genes are well known for the ABC model of flower development. In this study, we investigated the expressions of A, B and C functions
Plant breeding programs are often used to improve varieties through creating diverse agronomic traits. During a breeding program, a lot of genetic diversities are created in the genome after different generations through homologous recombination. Genome sequencing technology has revolutionized the discovery of genes and molecular markers associated with diverse agronomic traits in crop improvement programs. Genomic research is now in the peak of success, thus creating new opportunities for crop improvement modern sequencing technology is now capable of sequencing thousands to millions of bases per run. Modern sequencing technologies enable the sequencing of different cultivars with small to complex genomes at a reasonable time and cost. These massive data can be used to identify important agronomic traits of crops such as fruit color, size, ripening, flowering time adaptation, grain yield, and quality maintenance. In addition, they can be used to develop crop varieties. This mini-review is focused on the role of genome sequencing in genomic research and plant breeding for crop improvements.
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The rise of whole genome sequences of different plants provided more understanding about the gene regulation and genome evolution in further studying plants. More and more pathways and networks are identified by novel gene discoveries. Therefore, the Plant and Animal Genome Conference (PAG XXIV) provides a good venue to share the recent progress in the area of plant research genome sequencing technologies in various plants. However, this information can make a powerful system for developing improved crop varieties. By the way, the genome annotation and assembly is an essential key for breeding of stress-tolerant plants. PAG XXIV demonstrated different works about the extensive use of genomic databases accompanied by bioinformatics tools to accelerate breeding methods, discovery of new approaches to genomics, further increasing biomass of bioenergy crops, and explaining the genetic mechanisms in plant growth and defense. This review article summarizes some of the researches in various plants of rice, corn, wheat, cottonwood, switchgrasses,
Increasing demand for food commodities and energy supply highlight the necessity to further improve crop productivity. At the Plant and Animal Genome Conference (PAG XXIV), recent developments and future plans for genomics research of plants and animals were presented. PAG XXIV provided a forum to explore crop genomes with the aim of providing new opportunities for crop breeding and the foundation for functional genomic studies to improve agriculture production and help feed the growing population. Genetic diversity and population structure studies of crops have allowed us to explore alleles related to different characteristics important for plant breeding. Several useful databases were introduced in PAG XXIV. They were developed to integrate a growing set of commonly used data types and analysis tools with new capabilities for visualization, exploration, and predictive analysis. This review highlights the global trends in plant genomics presented at PAG XXIV by focusing on crop productivity.
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An increasing preference for good eating quality of rice among consumers has become one of the important considerations in rice breeding. Amylose content is a leading factor affecting eating quality of rice. Amylose composition is determined by the relative activity of soluble starch synthase (SSS) and granule-bound starch synthase (GBSS). This study focused on modifying the expression of
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A large number of antimicrobial peptides (AMPs) from different organisms have been characterized to date. AMPs are small molecular weight proteins with broad spectrum antimicrobial activity against bacteria, viruses, and fungi. Several diseases in plants could result in serious losses and decreasing quality and safety of agricultural products. Being an agent for plant defense, AMPs kill target cells through diverse mechanisms once in a target microbial membrane. Cathelicidins, defensins and thionins are the three major groups of epidermal AMPs in human and plants. Plant AMPs are structurally and functionally diverse and can be directed against other organisms, like herbivorous insects. The biological activity of plant AMPs primarily depends on interactions with membrane lipids. Several antimicrobial peptides have been expressed in transgenic plants to confer disease protection. Antimicrobial peptides are interesting compounds that can be efficiently exploited for disease control in plants in a way that complies with the strict regulations on the efficacy and safety of disease control strategy.
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