Maintenance and homeostasis of the quiescent center (QC) in Arabidopsis (Arabidopsis thaliana) root apical meristems are critical for stem cell organization and root development. Despite great progress in relevant research, the molecular mechanisms that determine the root stem cell fate and QC still need further exploration. In Arabidopsis, SUPPRESSOR OF FRIGIDA 4 (SUF4) encodes a C2H2-type zinc finger protein that represses flowering by transcriptional activation of FLOWERING LOCUS C (FLC) through the FRIGIDA (FRI) pathway, and EARLY BOLTING IN SHORT DAYS (EBS) is a bivalent histone reader that prevents premature flowering.
View Article and Find Full Text PDFTOPLESS/TOPLESS-RELATED (TPL/TPR) proteins belong to the Groucho (Gro)/Tup1 family co-repressors and act as broad co-repressors that modulate multiple phytohormone signalling pathways and various developmental processes in plant. However, TPL/TPR co-repressors so far are poorly understood in the rapeseed, one of the world-wide important oilseed crops. In this study, we comprehensively characterized eighteen TPL/TPR genes into five groups in the rapeseed genome.
View Article and Find Full Text PDFSECRETORY13 (SEC13) is an essential member of the coat protein complex II (COPII), which was reported to mediate vesicular-specific transport from the endoplasmic reticulum (ER) to the Golgi apparatus and plays a crucial role in early secretory pathways. In , there are two homologous proteins of SEC13: SEC13A and SEC13B. () encodes a C2H2-type zinc finger protein that inhibits flowering by transcriptionally activating the () through the FRIGIDA (FRI) pathway in .
View Article and Find Full Text PDFHeat stress is a major factor limiting the production and geographic distribution of rice (Oryza sativa), and breeding rice varieties with tolerance to heat stress is of immense importance. Although extensive studies have revealed that reactive oxygen species (ROS) play a critical role in rice acclimation to heat stress, the molecular basis of rice controlling ROS homeostasis remains largely unclear. In this study, we discovered a novel heat-stress-responsive strategy that orchestrates ROS homeostasis centering on an immune activator, rice ENHANCED DISEASE SUSCEPTIBILITY 1 (OsEDS1).
View Article and Find Full Text PDFPathogens are important threats to many plants throughout their lifetimes. Plants have developed different strategies to overcome them. In the plant immunity system, nucleotide-binding domain and leucine-rich repeat-containing proteins (NLRs) are the most common components.
View Article and Find Full Text PDFAs a multigenic trait, rice tillering can optimize plant architecture for the maximum agronomic yield. SQUAMOSA PROMOTER BINDING PROTEIN-LIKE14 (OsSPL14) has been demonstrated to be necessary and sufficient to inhibit rice branching, but the underlying mechanism remains largely unclear. Here, we demonstrated that OsSPL14, which is cleaved by miR529 and miR156, inhibits tillering by fine-tuning auxin transport in rice.
View Article and Find Full Text PDFXanthomonas species colonize many host plants and cause huge losses worldwide. Transcription activator-like effectors (TALEs) are secreted by Xanthomonas and translocated into host cells to manipulate the expression of target genes, especially by Xanthomonas oryzae pv. oryzae and Xanthomonas oryzae pv.
View Article and Find Full Text PDFPlants have developed various mechanisms for avoiding pathogen invasion, including () genes. Most genes encode nucleotide-binding domain and leucine-rich repeat containing proteins (NLRs). Here, we report the isolation of three new bacterial blight genes in rice, , , and (), which were allelic to and encoded atypical NLRs with unique central tandem repeats (CTRs).
View Article and Find Full Text PDFNanomedicine (Lond)
November 2018
Aim: The development of new and efficient antibacterial agents is urgent to overcome emerging antimicrobial resistance.
Materials & Methods: Herein, we have presented a new type of 3D antibacterial system to prompt bacteria to contact with the any plane of nanocomposites.
Results: Comparing the antibacterial activity of graphene oxide, reduced graphene oxide and graphene-loaded nanoflower-like nickelous hydroxide (GN/Ni(OH)) nanocomposites; the GN/Ni(OH) showed stronger bactericidal capability toward Gram-negative/-positive bacteria.
A novel, simple and highly efficient process for purifying vanadium bromoperoxidase from Corallina officinalis is reported. The key innovation is adding 0.5 mM sodium orthovanadate to the crude cell extract followed by heating at 70°C for 2 h, by which a 5.
View Article and Find Full Text PDFGuang Pu Xue Yu Guang Pu Fen Xi
July 2005
S2- and Ag+ form stable Ag2S nanoparticles in the presence of sodium dodecyl sulphate (SDS). It exhibits a strong resonance scattering peak at 470 nm and a strong fluorescence peak at 470 nm when excitation wavelength is at 200 nm. The effects of TAA and Ag+ concentration on the fluorescence intensities are consistent with those on the resonance scattering signals.
View Article and Find Full Text PDF