A5083406322- Plant Stress Responses and Tolerance
- Agriculture, Soil, Plant Science
- Plant Micronutrient Interactions and Effects
- Heavy metals in environment
- Soil Carbon and Nitrogen Dynamics
- Photosynthetic Processes and Mechanisms
- Arsenic contamination and mitigation
- Aluminum toxicity and tolerance in plants and animals
- Ecology and Conservation Studies
- Weed Control and Herbicide Applications
- Plant tissue culture and regeneration
- Rice Cultivation and Yield Improvement
- Porphyrin Metabolism and Disorders
- Soil and Water Nutrient Dynamics
- Agricultural Science and Fertilization
- Genetically Modified Organisms Research
- Advanced Chemical Physics Studies
- Plant and Fungal Interactions Research
- Plant Molecular Biology Research
- Pesticide and Herbicide Environmental Studies
- Plant Reproductive Biology
- Clay minerals and soil interactions
- Animal Nutrition and Physiology
- Nitrogen and Sulfur Effects on Brassica
- Trace Elements in Health
Rural Development Administration
2017-2024
National Institute of Agricultural Science and Technology
2017-2023
Kyungpook National University
1998-2021
Cornell University
2009-2017
National Institute of Animal Science
2017
National Academy of Agricultural Science
2016
Sunchon National University
2011-2012
Chonnam National University
2009-2011
Iron is essential for both plant growth and human health nutrition. Knowledge of the signaling mechanisms that communicate iron demand from shoots to roots regulate uptake as well transport systems mediating partitioning into edible tissues critical development crop biofortification strategies. Here, we report OPT3, previously classified an oligopeptide transporter, a plasma membrane transporter capable transporting transition ions in vitro. Studies Arabidopsis thaliana show OPT3 loads...
Plants detoxify toxic metals through a GSH-dependent pathway. GSH homeostasis is maintained by the γ-glutamyl cycle, which involves synthesis and degradation recycling of component amino acids. The enzyme cyclotransferase (GGCT) involved in Glu recycling, but gene(s) encoding GGCT has not been identified plants. Here, we report that an Arabidopsis thaliana protein with cation transport regulator-like domain, hereafter referred to as GGCT2;1, functions cyclotransferase. Heterologous...
Glutathione (GSH) plays diverse roles in the physiological processes, stress defense, growth, and development of plants. This study investigated effects exogenous GSH on biochemical responses reactive oxygen species antioxidant levels rice (Oryza sativa L. cv. Dasan) seedlings under arsenic (As) stress. As treatment inhibited growth; increased level superoxide, hydrogen peroxide, malondialdehyde; enhanced uptake by roots shoots hydroponically grown 14-day-old seedlings. Furthermore, it...
Abstract A controlled flow of porphyrin metabolites is critical for organisms, but little known about the control biosynthesis under environmental stress. We monitored transgenic rice (Oryza sativa) plants expressing Myxococcus xanthus protoporphyrinogen oxidase (PPO) their response to drought Transgenic showed significantly improved tolerance, as indicated by a higher shoot water potential, less oxidative damage, and more favorable redox balance compared with wild-type plants. Both...
Among the mechanisms controlling copper homeostasis in plants is regulation of its uptake and tissue partitioning. Here we characterized a newly identified member conserved CTR/COPT family transporters Arabidopsis thaliana, COPT6. We showed that COPT6 resides at plasma membrane mediates accumulation when expressed Saccharomyces cerevisiae mutant. Although primary sequence contains domains, including methionine-rich motifs extracellular N-terminal domain second transmembrane helix (TM2), it...
A deficiency of the micronutrient copper (Cu) leads to infertility and grain/seed yield reduction in plants. How Cu affects fertility, which reproductive structures require Cu, transcriptional networks coordinate delivery organs is poorly understood. Using RNA-seq analysis, we showed that expression a gene encoding novel transcription factor, CITF1 (Cu-DEFICIENCY INDUCED TRANSCRIPTION FACTOR1), was strongly upregulated Arabidopsis thaliana flowers subjected deficiency. We demonstrated...
Copper (Cu) homeostasis in plants is maintained by at least two mechanisms: (1) the miRNA-dependent reallocation of intracellular Cu among major Cu-enzymes and important energy-related functions; (2) regulation expression transporters including members CTR/COPT family. These events are controlled transcription factor SPL7 Arabidopsis thaliana. Cadmium (Cd), on other hand, a non-essential highly toxic metal that interferes with essential elements competing for cellular binding sites. Whether...
The role of ascorbate (AsA) in antioxidant defense system-associated resistance to cadmium (Cd) oilseed rape plants has not yet been clearly demonstrated. present study investigated the critical exogenous AsA on physiological and biochemical responses reactive oxygen species (ROS) scavenging systems ( Brassica napus L. cv. Tammi) seedlings exposed Cd. Cd (10 μM) treatment led significant reductions plant growth; increases levels superoxide anion radical, hydrogen peroxide, malondialdehyde;...
The antioxidant glutathione (GSH) mitigates adverse physio-metabolic effects and defends against abiotic types of stress, such as cadmium (Cd) stress. However, its function role in resisting Cd phytotoxicity by leveraging plant antioxidant-scavenging, redox-regulating, hormone-balancing systems have not been comprehensively systematically demonstrated the Cd-hyperaccumulating Brassica napus L. cv. Tammi (oilseed rape). In this study, exogenously applied GSH to leaves B. seedlings exposed (10...
Protoplasts are plant cells that have had their cell walls enzymatically removed. Isolation of protoplasts from different tissues was first reported more than 40 years ago and has since been adapted to study a variety cellular processes, such as subcellular localization proteins, isolation intact organelles targeted gene-inactivation by double stranded RNA interference (RNAi). Most the protoplast protocols use leaf mature Arabidopsis (e.g. 35-day-old plants). We modified existing employing...
Copper (Cu) is an essential micronutrient that performs a remarkable array of functions in plants including photosynthesis, cell wall remodeling, flowering, and seed set. Of the world's major cereal crops, wheat, barley, oat are most sensitive to Cu deficiency. deficient soils include alkaline soils, which occupy approximately 30% arable lands, organic estimated 19% land Europe. We used Brachypodium distachyon (brachypodium) as proxy for wheat other grain cereals initiate analyses molecular...
Arsenic (As) accumulation in rice owing to uptake from the soil is a critical human health issue. Here, we studied chemical properties of As-treated soils, growth inhibition patterns As-stressed plants, changes As content and solutions, relationship between transfer factor organs. Rice plants were cultivated greenhouse under four concentrations As: 0 (control), 25, 50, 75 mg kg-1. A significant positive correlation was found available P2O5 exchangeable K concentration or K. The for 50% shoot...
본 연구의 목적은 설포닐우레아계 제초제에 대한 저항성 잡초종 방제에 효과적인 HPPD(4-hydroxy phenylpyruvate dioxygenase) 저해 제초제, mestrione, benzobicyclone 및 tefuryltrion에 벼 품종 간의 약해정도를 구명하기 위하여 수행하였다. 총 26 품종(통일형 8품종 그리고 일본형 18품종)은 육묘상자에서 25일 동안 생육시킨 후 이앙하였고, 이앙 5, 10, 15일에 각각의 제초제를 표준량 배량을 처리하였다. 비록 tefuryltrion 제초제가 동일한 HPPD 제초제들이지만 이들 제초제의 처리 시기나 약량에 따라 품종별 약해정도와 증상은 서로 상이하였다. 시험약제 모두에서 통일형 품종이 품종보다 약해가 심하게 발생하였다. Mesotrione은 약량이 증가할수록, benzobicyclon은 처리시기가 빠르고 증가할수록 심하였다. 반면에 tefuryltrion은 처리시기와 품종간의 약해변이는 크지 않았다....