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[PD-0017] Mutation of GmIPK1 Gene using CRISPR/Cas9 Reduced Phytic Acid Content in Soybean Seeds
Hye Jeong Kim(Hye Jeong Kim),Ji Hyeon Song(Ji Hyeon Song),Gilok Shin(Gilok Shin),Hyeonjin Song(Hyeonjin Song),Ji Eun Lee(Ji Eun Lee),Cha Young Kim(Cha Young Kim),Young-Soo Chung(Young-Soo Chung) 한국육종학회 2022 한국육종학회 공동학술발표집 Vol.2022 No.-
A Role for Arabidopsis miR399f in Salt, Drought, and ABA Signaling
Baek, Dongwon,Chun, Hyun Jin,Kang, Songhwa,Shin, Gilok,Park, Su Jung,Hong, Hyewon,Kim, Chanmin,Kim, Doh Hoon,Lee, Sang Yeol,Kim, Min Chul,Yun, Dae-Jin Korean Society for Molecular and Cellular Biology 2016 Molecules and cells Vol.39 No.2
MiR399f plays a crucial role in maintaining phosphate homeostasis in Arabidopsis thaliana. Under phosphate starvation conditions, AtMYB2, which plays a role in plant salt and drought stress responses, directly regulates the expression of miR399f. In this study, we found that miR399f also participates in plant responses to abscisic acid (ABA), and to abiotic stresses including salt and drought. Salt and ABA treatment induced the expression of miR399f, as confirmed by histochemical analysis of promoter-GUS fusions. Transgenic Arabidopsis plants overexpressing miR399f (miR399f-OE) exhibited enhanced tolerance to salt stress and exogenous ABA, but hypersensitivity to drought. Our in silico analysis identified ABF3 and CSP41b as putative target genes of miR399f, and expression analysis revealed that mRNA levels of ABF3 and CSP41b decreased remarkably in miR399f-OE plants under salt stress and in response to treatment with ABA. Moreover, we showed that activation of stress-responsive gene expression in response to salt stress and ABA treatment was impaired in miR399f-OE plants. Thus, these results suggested that in addition to phosphate starvation signaling, miR399f might also modulates plant responses to salt, ABA, and drought, by regulating the expression of newly discovered target genes such as ABF3 and CSP41b.
Moon Ju Yeon,Lee Saet Buyl,Jeong Yu Jeong,Lim Gah-Hyun,Shin Gilok,Choi Man-Soo,Kim Jeong Ho,Park Ki Hun,Park Ki Hun,Jeong Jae Cheol,Kim Cha Young 한국응용생명화학회 2024 Applied Biological Chemistry (Appl Biol Chem) Vol.67 No.-
R2R3‑MYB transcription factors (TFs) are known to play a key role in regulating the expression of structural genes involved in plant flavonoid biosynthesis. However, the regulatory networks and related genes controlling isoflavo noid biosynthesis in soybean are poorly understood. We previously reported that ethephon application increases the production of isoflavonoids in soybean leaves. In this study, we attempted to identify a potential regulatory gene that positively controls isoflavonoid production in response to ethephon treatment in soybean (Glycine max L.). RNA sequencing (RNA‑seq) revealed that ethephon application led to the upregulation of 22 genes, including the genes for R2R3‑MYB TFs, related to isoflavonoid biosynthesis in soybean plants. Ethephon treatment highly induced the expression of GmMYB108, and its expression was exclusively enriched in flowers as determined using in silico and real‑time quantitative PCR analyses. Furthermore, GmMYB108 overexpression resulted in an intense accumulation of anthocyanins as well as total flavonoid production in the leaf tissues of transgenic Arabidopsis plants. In addition, GmMYB108 overexpression increased the transcript levels of several genes involved in the biosynthesis of anthocya nins and their regulatory pathways in Arabidopsis. These results suggest that GmMYB108 is a potential positive regula tor of the biosynthesis of flavonoids and anthocyanins in soybean flowers.
Identification and molecular properties of SUMO-binding proteins in Arabidopsis
Park, Hyeong Cheol,Choi, Wonkyun,Park, Hee Jin,Cheong, Mi Sun,Koo, Yoon Duck,Shin, Gilok,Chung, Woo Sik,Kim, Woe-Yeon,Kim, Min Gab,Bressan, Ray A.,Bohnert, Hans J.,Lee, Sang Yeol,Yun, Dae-Jin Springer-Verlag 2011 Molecules and cells Vol.32 No.2