Jeonga Yun

North Carolina State University

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José M. Alonso

North Carolina State University

Anna N. Stepanova

North Carolina State University

Malcolm J. Bennett

University of Nottingham

Ranjan Swarup

University of Nottingham

Catharina Merchante

Universidad de Málaga

Jung-In Kim

Inje University

Kamal Swarup

University of Nottingham

Karin Ljung

Umeå Plant Science Centre

Javier Brumós

Universitat Politècnica de València

Teva Vernoux

Laboratoire de Reproduction et Développement des Plantes

Cooperative Institutions

University of Nottingham

North Carolina State University

Loughborough University

Vlaams Instituut voor Biotechnologie

Ghent University

Centre National de la Recherche Scientifique

Max Planck Institute for Developmental Biology

Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement

Salk Institute for Biological Studies

International Crops Research Institute for the Semi-Arid Tropics

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A mechanistic framework for auxin dependent Arabidopsis root hair elongation to low external phosphate

Nature Communications (2018)

Rahul Bhosale Jitender Giri Bipin K. Pandey Ricardo Fabiano Hettwer Giehl Anja Hartmann

Abstract Phosphate (P) is an essential macronutrient for plant growth. Roots employ adaptive mechanisms to forage for P in soil. Root hair elongation is particularly important since P is immobile. Here we report that auxin plays a critical role promoting root hair growth in Arabidopsis in response to low external P. Mutants disrupting auxin synthesis ( taa1 ) and transport ( aux1 ) attenuate the low P root hair response. Conversely, targeting AUX1 expression in lateral root cap and epidermal cells rescues this low P response in aux1 . Hence auxin transport from the root apex to differentiation zone promotes auxin-dependent hair response to low P. Low external P results in induction of root hair expressed auxin-inducible transcription factors ARF19, RSL2, and RSL4. Mutants lacking these genes disrupt the low P root hair response. We conclude auxin synthesis, transport and response pathway components play critical roles regulating this low P root adaptive response.

Root hair

Elongation

10.1038/s41467-018-03851-3

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Citations (178)

Gene-Specific Translation Regulation Mediated by the Hormone-Signaling Molecule EIN2

Cell (2015)

Catharina Merchante Javier Brumós Jeonga Yun Qiwen Hu Kristina R. Spencer

Translational regulation

Footprinting

10.1016/j.cell.2015.09.036

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Citations (298)

Hormone-Mediated Gene-Specific Translation Regulation

Catharina Merchante Javier Brumós Jeonga Yun Anna N. Stepanova José M. Alonso

Source

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Citations (0)

TAA1-Mediated Auxin Biosynthesis Is Essential for Hormone Crosstalk and Plant Development

Cell (2008)

Anna N. Stepanova Joyce Marie Robertson-Hoyt Jeonga Yun Larissa M. Benavente De‐Yu Xie

Crosstalk

Plant hormone

10.1016/j.cell.2008.01.047

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Citations (1,113)

Author Correction: A mechanistic framework for auxin dependent Arabidopsis root hair elongation to low external phosphate

Nature Communications (2018)

Rahul Bhosale Jitender Giri Bipin K. Pandey Ricardo Fabiano Hettwer Giehl Anja Hartmann

The original version of this Article omitted the following from the Acknowledgements: 'We also thank DBT-CREST BT/HRD/03/01/2002.' This has been corrected in both the PDF and HTML versions of the Article.

Elongation

Root hair

Root (linguistics)

10.1038/s41467-018-04281-x

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Citations (15)

Translation regulation of uORFs-containing genes in Arabidopsis

Catharina Merchante Jeonga Yun Victoriano Valpuesta-Fernandez Anna N. Stepanova José M. Alonso

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The effects of the professional learning environment on early childhood curriculum implementation: mediating effects of teacher competency and teaching flow

Korea open association for early childhood education (2021)

Jeonga Yun Chunghee Chung

본 연구는 유아교사를 대상으로 유아교육과정 실행에 영향을 미치는 전문적 학습환경, 교사역량, 교수몰입의 구조적 관계를 검증하는 것을 목적으로 하였다. 이를 위해 서울, 대구, 경북지역의 유치원과 어린이집에 근무하는 만3~5세 담당 유아교사 418명을 대상으로 설문조사를 실시하였으며, 자료분석은 SPSS 25.0을 이용하여 기술통계와 상관분석, AMOS 25.0을 활용하여 구조모형 분석과 연구모형의 적합도를 검증하였다. 연구결과는 다음과 같다. 첫째, 전문적 학습환경, 교사역량, 교수몰입은 유아교육과정 실행에 유의한 정적 영향을 미치는 것으로 나타났으며 그중 교사역량이 가장 큰 영향을 미쳤다. 둘째, 전문적 학습환경과 유아교육과정 실행의 관계에서 교사역량과 교수몰입 모두 매개효과가 있는 것으로 나타났다. 또한 전문적 학습환경과 유아교육과정 실행의 관계에서 교사역량과 교수몰입은 이중매개효과가 있는 것을 확인하였다. 이러한 연구결과를 토대로 유아교육과정 실행을 지원하기 위한 전문적 학습환경의 조성방향과 교사역량과 교수몰입을 증진시키기 위한 교사교육 프로그램 방안에 대해 논의하였다.

Knowledge flow

10.20437/koaece26-3-07

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A Study on the Research Trends Related to Happiness of Early Childhood Teacher and Preservice Early Childhood Teacher using Keyword Network Analysis

The Korean Society for Child Education (2022)

Ah-Rem Lee Jeonga Yun

본 연구는 유아교사 및 예비유아교사의 행복감 관련 논문의 연구동향을 알아보기 위하여 KCI 등 재지에 게재된 유아교사 행복감 관련 연구 148편과 예비유아교사 행복감 관련 연구 62편, 총 210편을 대상으로 키워드 네트워크 분석을 실시하였다. 연구결과는 다음과 같다. 첫째, 유아교사의 행복감 관련 연구는 2014년부터 급증하여 활발한 연구가 진행되었고, 예비유아교사 행복감 관련 연구는 2018년부터 눈에 띄는 증가세를 보였다. 연구방법은 유아교사와 예비유아교사 모두 양적연구의 비중이 높았으며 행복감 관련 변인에 대한 연구주제를 가장 많이 다루고 있었다. 둘째, 키워드 네트워크 분석에서는 연구주제와 관련된 ‘행복감’, ‘유아교사’ 키워드 외에 ‘직무만족’, ‘교사-유아상호작용’, ‘직무스트레스’가 가장 높은 빈도를 나타냈으며, 예비유아교사 관련 논문에서는 ‘자아탄력성’, ‘교사효능감’, ‘전공만족도’ 등의 키워드 빈도수가 높았다. 출현빈도 상위 키워드들은 네트워크 중심성 분석에서도 높은 영향력을 가지고 있었다. 본 연구결과를 통해 유아교사 뿐 아니라, 예비유아교사의 행복감 관련 연구동향 및 키워드 네트워크를 파악함으로써 향후 유아교사 행복감 연구의 방향성을 제시하였다는 점에서 의의가 있다.

Early childhood teacher

10.17643/kjce.2022.31.2.10

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AUX/LAX Genes Encode a Family of Auxin Influx Transporters That Perform Distinct Functions during Arabidopsis Development

The Plant Cell (2012)

Benjamin Péret Kamal Swarup Alison Ferguson Malvika Seth Yaodong Yang

Auxin transport, which is mediated by specialized influx and efflux carriers, plays a major role in many aspects of plant growth and development. AUXIN1 (AUX1) has been demonstrated to encode a high-affinity auxin influx carrier. In Arabidopsis thaliana, AUX1 belongs to a small multigene family comprising four highly conserved genes (i.e., AUX1 and LIKE AUX1 [LAX] genes LAX1, LAX2, and LAX3). We report that all four members of this AUX/LAX family display auxin uptake functions. Despite the conservation of their biochemical function, AUX1, LAX1, and LAX3 have been described to regulate distinct auxin-dependent developmental processes. Here, we report that LAX2 regulates vascular patterning in cotyledons. We also describe how regulatory and coding sequences of AUX/LAX genes have undergone subfunctionalization based on their distinct patterns of spatial expression and the inability of LAX sequences to rescue aux1 mutant phenotypes, respectively. Despite their high sequence similarity at the protein level, transgenic studies reveal that LAX proteins are not correctly targeted in the AUX1 expression domain. Domain swapping studies suggest that the N-terminal half of AUX1 is essential for correct LAX localization. We conclude that Arabidopsis AUX/LAX genes encode a family of auxin influx transporters that perform distinct developmental functions and have evolved distinct regulatory mechanisms.

Polar auxin transport

Conserved sequence

10.1105/tpc.112.097766

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Citations (397)

Hypoglycemic and hypolipidemic effects of samnamul (shoot of Aruncus dioicus var. kamtschaticus Hara) in mice fed a high-fat/high-sucrose diet

Food Science and Biotechnology (2018)

Jung-In Kim Jeonga Yun Yoo-Kyung Jeong Hee-Jin Baek

Acarbose

Sucrase

Maltase

Dyslipidemia

Disaccharidase

10.1007/s10068-018-0390-5

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Citations (15)