Publications by authors named "Jiantang Xu"

Roselle ( L.) simple sequence repeat (SSR) markers were developed using RNA sequencing technology, providing a foundation for genetic analysis and the identification of roselle varieties. In this study, 10 785 unigenes containing 12 994 SSR loci with an average of one SSR locus per 6.

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  • Plant height significantly influences bast fiber yield in jute, with a focus on understanding the dwarfism in the 'Guangbaai' (gba) cultivar revealing that it is a gibberellic acid (GA)-insensitive mutant.
  • Genetic analysis identified 25 QTLs related to plant height, including a key locus known as CoGID1a, linked to the dwarf phenotype through mutations that affect GA reception.
  • Findings suggest that the accumulation of gibberellins in gba drives the up-regulation of genes important for cellulose synthesis, enhancing insights into how fiber development is influenced by plant hormones.
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  • Scientists studied the DNA of okra plants to learn about special repeating parts called satellite repeats and how they change or stay the same across different versions of okra.
  • They found eight types of these repeats in five different okra plants and saw that some repeats were located near places important for DNA structure.
  • The research showed that these repeats evolve in unique ways and are linked to certain parts of okra DNA that help it develop and grow.*
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Unlabelled: Suitable flowering time can improve fiber yield and quality, which is of great significance for jute biological breeding. In this study, 242 jute accessions were planted in Fujian for 2 consecutive years, and 244,593 SNPs distributed in jute genome were used for genome-wide association analysis of flowering time. A total of 19 candidate intervals ( < 0.

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  • Jute is a vital crop for fiber production, and the CCoAOMT enzyme plays a key role in lignin biosynthesis, yet little is known about the evolution and expression of its gene family in jute under various conditions.
  • The research identified 66 CCoAOMT genes across 12 species, with significant growth in C. olitorius, and found varying expression levels of two dominant genes, CCoAOMT1 and CCoAOMT2, during different stages of jute development.
  • Results indicated that CCoAOMT expression increases significantly in response to drought stress, suggesting a link between these genes and lignin content in jute, which could help optimize fiber production.
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The abscisic acid (ABA)-responsive element binding protein/ABRE-binding factor (AREB/ABF) subfamily members are essential to ABA signaling pathways and plant adaptation to various environmental stresses. Nevertheless, there are no reports on in jute ( L.).

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  • - The study focuses on roselle (L.), an herbaceous plant known for its health benefits due to anthocyanins found in its calyx, but there's limited knowledge on how these compounds are produced in roselle.
  • - Researchers performed detailed analyses on three roselle cultivars with different calyx colors—red (FZ-72), green (Baitao K), and stripped (MG5)—to quantify anthocyanin levels and identify the key genes involved in their biosynthesis through transcriptomic and metabolomic methods.
  • - Findings revealed that FZ-72 had the highest anthocyanin content, with RNA-seq analysis identifying over 114,000 differentially expressed genes and highlighting specific gene families linked to
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  • Cultivated jute, made up of the species C. capsularis and C. olitorius, is the second most important natural fiber after cotton; the study presents their chromosome-level genome assemblies.
  • C. capsularis has 336 Mb with 25,874 genes, while C. olitorius has 361 Mb and 28,479 genes, showing both similarities and differences that could explain their distinct traits.
  • The research identifies key genes linked to fiber development and significant marker-trait associations related to fiber quality, providing valuable insights for genetic improvement in jute and similar crops.
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Kenaf is an annual crop that is widely cultivated as a source of bast (phloem) fibres, the phytoremediation of heavy metal-contaminated farmlands and textile-relevant compounds. Leaf shape played a unique role in kenaf improvement, due to the inheritance as a single locus and the association with fibre development in typical lobed-leaf varieties. Here we report a high-quality genome assembly and annotation for var.

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  • Kenaf is an eco-friendly fiber crop that can tolerate various abiotic stresses, making it important for studying plant responses.
  • The study assessed the stability of nine candidate reference genes for normalizing gene expression in kenaf under different stress and hormone conditions using specific algorithms (geNorm, NormFinder, BestKeeper).
  • The findings identified two optimal reference genes for accuracy in qRT-PCR, while one gene was deemed unsuitable, aiding future research on stress tolerance and signaling in kenaf.
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Background: Genetic mapping and quantitative trait locus (QTL) detection are powerful methodologies in plant improvement and breeding. White jute (Corchorus capsularis L.) is an important industrial raw material fiber crop because of its elite characteristics.

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Anthracnose, caused by the Colletotrichum species of fungi, is one of the most serious diseases affecting jute in China. The disease causes chlorotic regions with black brown sunken necrotic pits on the surfaces of stems. In late stages of disease, plants undergo defoliation, dieback and blight, which make anthracnose a major threat to jute fiber production and quality in China.

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Kenaf (Hibiscus cannabinus) is an economic and ecological fiber crop but suffers severe losses in fiber yield and quality under the stressful conditions of excess salinity and drought. To explore the mechanisms by which kenaf responds to excess salinity and drought, gene expression was performed at the transcriptomic level using RNA-seq. Thus, it is crucial to have a suitable set of reference genes to normalize target gene expression in kenaf under different conditions using real-time quantitative reverse transcription-PCR (qRT-PCR).

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  • Reliable reference genes are crucial for accurate gene expression measurement using qRT-PCR, specifically for the plant Corchorus capsularis, which has not been previously studied in this context.
  • The study analyzed 11 candidate reference genes across 22 jute samples under different stress conditions and tissue types to assess their stability using specialized programs.
  • Results identified specific stable reference genes (e.g., ACT7, RAN, UBC) for various stressors and tissue types, providing a recommended framework for accurate normalization in future gene expression studies of C. capsularis.
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Population structure and relationship analysis is of great importance in the germplasm utilization and association mapping. Jute, comprised of white jute (C. capsularis L) and dark jute (C.

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The Caffeoyl-CoA 3-O-methyltransferase (CCoAOMT) is a key enzyme in lignin biosynthesis in plants. In this study we cloned the full-length cDNA of the Caffeoyl-CoA 3-O-methyltransferase (CCoAOMT) gene from jute using homology clone (primers were designed according to the sequence of CCoAOMT gene of other plants), and a modified RACE technique, subsequently named "CcCCoAOMT1". Bioinformatic analyses showed that the gene is a member of the CCoAOMT gene family.

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  • - The study isolated and identified a gene named CcUGPase from jute, using techniques such as homologous cloning and modified RACE, revealing its relation to the UGPase gene family through bioinformatic analysis.
  • - Real-time PCR showed that CcUGPase has variable expression levels, peaking at 40 and 120 days, and genetic analysis confirmed its integration into the jute genome.
  • - Overexpressing the CcUGPase gene in jute led to taller plants with higher cellulose content, indicating its role in cellulose production, which could enhance the quality of jute fibers.
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Understanding genetic diversity is very useful for scientific utilization for breeding. In this study, we estimated the genetic distances in a panel of 84 kenaf accessions collected from 26 countries and regions using ISSR markers. The results of UPGMA analysis showed that kenaf germplasm had abundant genetic variation, with genetic dissimilarity coefficients ranging from 0.

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Kenaf stalk was pretreated by the white-rot fungus Pleurotus sajor-caju incubated in solid-state kenaf stalk cultivation medium. Delignification and subsequent enzymatic saccharification and fermentation of kenaf stalk were investigated in order to evaluate effects of microbial pretreatment on bioconversion of kenaf lignocellulose to fuel ethanol production. The highest delignification rate of 50.

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