Publications by authors named "Kaixuan Duan"

Phytophthora pathogens secrete numerous apoplastic effectors to manipulate host immunity. Herein, we identified a polysaccharide lyase 1 protein, PsPL1, which acts as an essential virulence factor of P. sojae infection in soybean.

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Article Synopsis
  • Plant cell walls are like shields for plants against germs, and there’s a constant battle between them and the bad germs.
  • A special protein from a germ weakens the plant walls, but plants have their own protein that helps protect them.
  • Scientists used AI to create a new version of the plant protein that can specifically fight off the germ’s attacks, making plants stronger against these harmful germs.
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  • Plants can quickly form immune receptor complexes when detecting microbial infections, but the regulation of this process is not well understood.
  • Research shows that a receptor-like kinase called NbBIR2 interacts with another protein, NbBAK1, which helps in forming these immune complexes.
  • Additionally, NbBIR2 is targeted for degradation by two E3 ligases, which are inhibited when the plant detects specific microbial patterns, thus enhancing the plant's immune response.
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Soybean root rot disease caused by Phytophthora sojae seriously constrains soybean yield. Knocking out the susceptibility gene GmTAP1 in soybean created new soybean lines resistant to several P. sojae strains and these lines showed no agronomic penalties in the field.

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Plants have evolved sophisticated immune networks to restrict pathogen colonization. In response, pathogens deploy numerous virulent effectors to circumvent plant immune responses. However, the molecular mechanisms by which pathogen-derived effectors suppress plant defenses remain elusive.

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Cell polarity, as a vital intracellular microenvironment characteristic, has immense effects on numerous pathological and biological processes. Therefore, the tracking of polarity variations is highly essential to explore the role and mechanism of the polarity in pathophysiological processes. Herein, we designed and synthesized a novel rhodol-based fluorescent probe (RDS) sensitive to polarity by introducing a bis(2-hydroxyethylthio)methyl group, like a pair of hydrophilic and rotatable wings, into the rhodol skeleton.

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Article Synopsis
  • The apoplast in plants is where important defenses against microbial pathogens occur, but the mechanisms by which these pathogens evade these defenses are not well understood.
  • This study identifies an unusual effector protein, PsAvh181, secreted by the pathogen Phytophthora sojae, which prevents the secretion of plant defense proteins by targeting a host protein called GmSNAP-1.
  • PsAvh181 disrupts the interaction between GmSNAP-1 and another protein, effectively blocking the plant's defense response and allowing for successful infection by the pathogen.
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is a specialized plant pathogen that causes crown gall disease and is commonly used for -mediated transformation. As a pathogen, triggers plant immunity, which affects transformation. However, the signaling components and pathways in plant immunity to remain elusive.

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The creation of new soybean varieties has been limited by genomic duplication and redundancy. Efficient multiplex gene editing and large chromosomal segment deletion through clustered regularly interspaced palindromic repeats (CRISPR)/CRISPR-associated protein (Cas) systems are promising strategies for overcoming these obstacles. CRISPR/Cpf1 is a robust tool for multiplex gene editing.

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Background: Agrobacterium-mediated genetic transformation is a widely used and efficient technique for gene functional research in crop breeding and plant biology. While in some plant species, including soybean, genetic transformation is still recalcitrant and time-consuming, hampering the high-throughput functional analysis of soybean genes. Thus we pursue to develop a rapid, simple, and highly efficient hairy root system induced by Agrobacterium rhizogenes (A.

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Ethylene plays important roles in plant growth and development, but the regulation of ethylene signaling is largely unclear, especially in crops such as rice (). Here, by analysis of the ethylene-insensitive mutant (), we identified the GDSL lipase MHZ11, which modulates ethylene signaling in rice roots. MHZ11 localized to the endoplasmic reticulum membrane and has acyl-hydrolyzing activity.

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Ethylene plays essential roles during adaptive responses to water-saturating environments in rice, but knowledge of its signaling mechanism remains limited. Here, through an analysis of a rice ethylene-response mutant mhz1, we show that MHZ1 positively modulates root ethylene responses. MHZ1 encodes the rice histidine kinase OsHK1.

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Cadmium (Cd) induces cell death in plant roots. Mitogen-activated protein kinase (MAPK) plays a role in the regulation of cell death induced by Cd in plant roots. In this study, MhMAPK4 was isolated from the roots of Malus hupehensis.

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Agrobacterium tumefaciens is a plant pathogen that causes crown gall disease. During infection of the host plant, Agrobacterium transfers T-DNA from its Ti plasmid into the host cell, which can then be integrated into the host genome. This unique genetic transformation capability has been employed as the dominant technology for producing genetically modified plants for both basic research and biotechnological applications.

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Agrobacterium tumefaciens is a plant pathogen that causes crown gall disease. This pathogen is capable of transferring the T-DNA from its Ti plasmid to the host cell and, then, integrating it into the host genome. To date, this genetic transformation ability has been harnessed as the dominant technology to produce genetically modified plants for both basic research and crop biotechnological applications.

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Ethylene plays important roles in plant growth, development, and stress responses. The ethylene signaling pathway has been studied extensively, mainly in Arabidopsis (Arabidopsis thaliana). However, the molecular mechanism of ethylene signaling is largely unknown in rice (Oryza sativa).

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Ethylene and abscisic acid (ABA) act synergistically or antagonistically to regulate plant growth and development. ABA is derived from the carotenoid biosynthesis pathway. Here, we analyzed the interplay among ethylene, carotenoid biogenesis, and ABA in rice (Oryza sativa) using the rice ethylene response mutant mhz5, which displays a reduced ethylene response in roots but an enhanced ethylene response in coleoptiles.

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Receptor-like kinases play important roles in plant development and defense responses; however, their functions in other processes remain unclear. Here, we report that OsSIK2, an S-domain receptor-like kinase from rice (Oryza sativa), is involved in abiotic stress and the senescence process. OsSIK2 is a plasma membrane-localized protein with kinase activity in the presence of Mn(2+).

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Ethylene plays essential roles in adaptive growth of rice plants in water-saturating environment; however, ethylene signaling pathway in rice is largely unclear. In this study, we report identification and characterization of ethylene-response mutants based on the specific ethylene-response phenotypes of etiolated rice seedlings, including ethylene-inhibited root growth and ethylene-promoted coleoptile elongation, which is different from the ethylene triple-response phenotype in Arabidopsis. We establish an efficient system for screening and a set of rice mutants have been identified.

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Ethylene signalling regulates plant growth and development. However, its roles in salt stress response are less known. Here we studied functions of EIN2, a central membrane protein of ethylene signalling, and its interacting protein ECIP1 in salt stress responses.

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Synopsis of recent research by authors named "Kaixuan Duan"

  • Recent research by Kaixuan Duan focuses on enhancing plant disease resistance through genetic engineering techniques, particularly CRISPR/Cas9, as demonstrated in his studies on soybean's resistance to Phytophthora sojae and the editing of pectin methylesterase inhibitors for broader resistance strategies.
  • Additionally, he investigates the molecular mechanisms of plant-pathogen interactions, elucidating how pathogens like Phytophthora sojae exploit plant cellular processes to evade immune responses, which is crucial for developing effective plant protection strategies.
  • His work also includes the development of innovative biotechnological tools and techniques for improving transformation efficiency in plants, aiming to facilitate higher throughput gene functional studies and crop improvement efforts.