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Main conclusion Eight variants in ZmHKT1 promoter were significantly associated with root diameter, four haplotypes based on these significant variants were found, and Hap2 has the largest root diameter.Roots play an important role in uptake of water, nutrients and plant anchorage. Identification of gene and corresponding SNPs associated with root traits would enable develop maize lines with better...
Ramie is an important natural fiber. There has been little research on the molecular mechanisms of ramie related to the absorption, utilization and metabolism of nitrogen (N), phosphorus (P) and potassium (K). One approach to reveal the mechanisms of N, P and K (NPK) utilization and metabolism in ramie is comparative proteome analysis. The differentially expressed proteins in the leaves of ramie were...
Pinus monticola antimicrobial peptide (PmAMP1) inhibits growth of Cronartium ribicola and other fungal pathogens. C. ribicola causes white pine blister rust and has resulted in a dramatic reduction of native white pines across North America. Quantitative disease resistance (QDR) is a highly desirable trait screened in breeding programs for durable resistance against C. ribicola. Along with phenotyping...
Metallothioneins (MTs) are small, cysteine-rich and metal-binding proteins which are involved in metal homeostasis and scavenging of reactive oxygen species. Although plant MTs have been intensively studied, their roles in seeds remain to be clearly established. Here, we report the isolation and characterization of NnMT2a, NnMT2b and NnMT3 from sacred lotus (Nelumbo nucifera Gaertn.) and their roles...
The proteomic profiles of primary needles from Cr2-resistant and cr2-susceptible Pinus monticola seedlings were analysed post Cronartium ribicola inoculation by 2-DE. One hundred-and-five protein spots exhibiting significant differential expression were identified using LC–MS/MS. Functional classification showed that the most numerous proteins are involved in defence signalling, oxidative burst, metabolic...
Plant HXXXD acyltransferase-catalyzed malonylation is an important modification reaction in elaborating the structural diversity of flavonoids and anthocyanins, and a universal adaptive mechanism to detoxify xenobiotics. Nicotiana tabacum malonyltransferase 1 (NtMaT1) is a member of anthocyanin acyltransferase subfamily that uses malonyl-CoA (MLC) as donor catalyzing transacylation in a range of flavonoid...
Cronartium ribicola causes white pine blister rust (WPBR) in subgenus Strobus. Various genetic and molecular approaches were used to detect white pine genes contributing to host resistance. The molecular role of the NBS-LRR family is highly related to plant immuno-activity against various pathogens and pests. In the present study, genomic organization of a resistance gene analog (RGA), designated...
The protein content in the plant apoplast is believed to change dramatically as a result of host defense response upon infection with various pathogens. In this study, six novel thaumatin-like proteins (TLPs) were identified in western white pine (Pinus monticola) needle apoplast by a proteomic strategy using two-dimensional protein electrophoresis followed by matrix-assisted laser desorption/ionization...
To better understand the role that reversible protein phosphorylation plays in seed germination, we initiated a phosphoproteomic investigation of embryos of germinated maize seeds. A total of 776 proteins including 39 kinases, 16 phosphatases, and 33 phosphoproteins containing 36 precise in vivo phosphorylation sites were identified. All the phosphorylation sites identified, with the exception of...
Acylesterification is one of the common modifications of cell wall non-cellulosic polysaccharides and/or lignin primarily in monocot plants. We analyzed the cell-wall acylesters of black cottonwood (Populus trichocarpa Torr. & Gray) with liquid chromatography–mass spectrometry (LC–MS), Fourier transform-infrared (FT-IR) microspectroscopy, and synchrotron infrared (IR) imaging facility. The results...
In Pinus monticola (Dougl. ex D. Don), the class ten pathogenesis-related (PR10) proteins comprise a family of multiple members differentially expressed upon pathogen infection and other environmental stresses. One of them, PmPR10-1.13, is studied here by investigating its transcriptional regulation in transgenic Arabidopsis plants. For functional analyses of the PmPR10-1.13 promoter, a 1,316-bp promoter...
Abstract.The cotton (+)--cadinene synthase, a sesquiterpene cyclase, is encoded by a complex gene family which, based on homology, can be divided into two subfamilies: cad1-A and cad1-C. Southern blots revealed several members of the cad1-C subfamily, and a single member of the cad1-A subfamily, in the diploid Gossypium arboreum genome. One of the cad1-C genes, cad1-C3, was isolated from this species...
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