Functional characterization and reconstitution of ABA signaling components using transient gene expression in rice protoplasts

Namhyo Kim, Seok Jun Moon, Myung K. Min, Eun Hye Choi, Jin Ae Kim, Eun Y. Koh, Insun Yoon, Myung Ok Byun, Sang-Dong Yoo, Beom Gi Kim

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The core components of ABA-dependent gene expression signaling have been identified in Arabidopsis and rice. This signaling pathway consists of four major components; group A OsbZIPs, SAPKs, subclass A OsPP2Cs and OsPYL/RCARs in rice. These might be able to make thousands of combinations through interaction networks resulting in diverse signaling responses. We tried to characterize those gene functions using transient gene expression for rice protoplasts (TGERP) because it is instantaneous and convenient system. Firstly, in order to monitor the ABA signaling output, we developed reporter system named pRab16A-fLUC which consists of Rab16A promoter of rice and luciferase gene. It responses more rapidly and sensitively to ABA than pABRC3-fLUC that consists of ABRC3 of HVA1 promoter in TGERP. We screened the reporter responses for over-expression of each signaling components from group A OsbZIPs to OsPYL/RCARs with or without ABA in TGERP. OsbZIP46 induced reporter most strongly among OsbZIPs tested in the presence of ABA. SAPKs could activate the OsbZIP46 even in the ABA independence. Subclass A OsPP2C6 and -8 almost completely inhibited the OsbZIP46 activity in the different degree through the SAPK9. Lastly, OsPYL/RCAR2 and -5 rescued the OsbZIP46 activity in the presence of SAPK9 and OsPP2C6 dependent on ABA concentration and expression level. By using TGERP, we could characterize successfully the effects of ABA dependent gene expression signaling components in rice. In conclusion, TGERP represents very useful technology to study systemic functional genomics in rice or other monocot.

Original languageEnglish
Article number614
JournalFrontiers in Plant Science
Volume6
Issue numberAUG
DOIs
Publication statusPublished - 2015 Aug 3

Fingerprint

protoplasts
rice
gene expression
promoter regions
luciferase
Liliopsida
genes
Arabidopsis
genomics

Keywords

  • ABA
  • Dual luciferase assay
  • Reconstitution of signaling
  • Rice protoplast
  • Transient expression

ASJC Scopus subject areas

  • Plant Science

Cite this

Functional characterization and reconstitution of ABA signaling components using transient gene expression in rice protoplasts. / Kim, Namhyo; Moon, Seok Jun; Min, Myung K.; Choi, Eun Hye; Kim, Jin Ae; Koh, Eun Y.; Yoon, Insun; Byun, Myung Ok; Yoo, Sang-Dong; Kim, Beom Gi.

In: Frontiers in Plant Science, Vol. 6, No. AUG, 614, 03.08.2015.

Research output: Contribution to journalArticle

Kim, Namhyo ; Moon, Seok Jun ; Min, Myung K. ; Choi, Eun Hye ; Kim, Jin Ae ; Koh, Eun Y. ; Yoon, Insun ; Byun, Myung Ok ; Yoo, Sang-Dong ; Kim, Beom Gi. / Functional characterization and reconstitution of ABA signaling components using transient gene expression in rice protoplasts. In: Frontiers in Plant Science. 2015 ; Vol. 6, No. AUG.
@article{834b1e84ec864ea1b1c02b1026490897,
title = "Functional characterization and reconstitution of ABA signaling components using transient gene expression in rice protoplasts",
abstract = "The core components of ABA-dependent gene expression signaling have been identified in Arabidopsis and rice. This signaling pathway consists of four major components; group A OsbZIPs, SAPKs, subclass A OsPP2Cs and OsPYL/RCARs in rice. These might be able to make thousands of combinations through interaction networks resulting in diverse signaling responses. We tried to characterize those gene functions using transient gene expression for rice protoplasts (TGERP) because it is instantaneous and convenient system. Firstly, in order to monitor the ABA signaling output, we developed reporter system named pRab16A-fLUC which consists of Rab16A promoter of rice and luciferase gene. It responses more rapidly and sensitively to ABA than pABRC3-fLUC that consists of ABRC3 of HVA1 promoter in TGERP. We screened the reporter responses for over-expression of each signaling components from group A OsbZIPs to OsPYL/RCARs with or without ABA in TGERP. OsbZIP46 induced reporter most strongly among OsbZIPs tested in the presence of ABA. SAPKs could activate the OsbZIP46 even in the ABA independence. Subclass A OsPP2C6 and -8 almost completely inhibited the OsbZIP46 activity in the different degree through the SAPK9. Lastly, OsPYL/RCAR2 and -5 rescued the OsbZIP46 activity in the presence of SAPK9 and OsPP2C6 dependent on ABA concentration and expression level. By using TGERP, we could characterize successfully the effects of ABA dependent gene expression signaling components in rice. In conclusion, TGERP represents very useful technology to study systemic functional genomics in rice or other monocot.",
keywords = "ABA, Dual luciferase assay, Reconstitution of signaling, Rice protoplast, Transient expression",
author = "Namhyo Kim and Moon, {Seok Jun} and Min, {Myung K.} and Choi, {Eun Hye} and Kim, {Jin Ae} and Koh, {Eun Y.} and Insun Yoon and Byun, {Myung Ok} and Sang-Dong Yoo and Kim, {Beom Gi}",
year = "2015",
month = "8",
day = "3",
doi = "10.3389/fpls.2015.00614",
language = "English",
volume = "6",
journal = "Frontiers in Plant Science",
issn = "1664-462X",
publisher = "Frontiers Media S. A.",
number = "AUG",

}

TY - JOUR

T1 - Functional characterization and reconstitution of ABA signaling components using transient gene expression in rice protoplasts

AU - Kim, Namhyo

AU - Moon, Seok Jun

AU - Min, Myung K.

AU - Choi, Eun Hye

AU - Kim, Jin Ae

AU - Koh, Eun Y.

AU - Yoon, Insun

AU - Byun, Myung Ok

AU - Yoo, Sang-Dong

AU - Kim, Beom Gi

PY - 2015/8/3

Y1 - 2015/8/3

N2 - The core components of ABA-dependent gene expression signaling have been identified in Arabidopsis and rice. This signaling pathway consists of four major components; group A OsbZIPs, SAPKs, subclass A OsPP2Cs and OsPYL/RCARs in rice. These might be able to make thousands of combinations through interaction networks resulting in diverse signaling responses. We tried to characterize those gene functions using transient gene expression for rice protoplasts (TGERP) because it is instantaneous and convenient system. Firstly, in order to monitor the ABA signaling output, we developed reporter system named pRab16A-fLUC which consists of Rab16A promoter of rice and luciferase gene. It responses more rapidly and sensitively to ABA than pABRC3-fLUC that consists of ABRC3 of HVA1 promoter in TGERP. We screened the reporter responses for over-expression of each signaling components from group A OsbZIPs to OsPYL/RCARs with or without ABA in TGERP. OsbZIP46 induced reporter most strongly among OsbZIPs tested in the presence of ABA. SAPKs could activate the OsbZIP46 even in the ABA independence. Subclass A OsPP2C6 and -8 almost completely inhibited the OsbZIP46 activity in the different degree through the SAPK9. Lastly, OsPYL/RCAR2 and -5 rescued the OsbZIP46 activity in the presence of SAPK9 and OsPP2C6 dependent on ABA concentration and expression level. By using TGERP, we could characterize successfully the effects of ABA dependent gene expression signaling components in rice. In conclusion, TGERP represents very useful technology to study systemic functional genomics in rice or other monocot.

AB - The core components of ABA-dependent gene expression signaling have been identified in Arabidopsis and rice. This signaling pathway consists of four major components; group A OsbZIPs, SAPKs, subclass A OsPP2Cs and OsPYL/RCARs in rice. These might be able to make thousands of combinations through interaction networks resulting in diverse signaling responses. We tried to characterize those gene functions using transient gene expression for rice protoplasts (TGERP) because it is instantaneous and convenient system. Firstly, in order to monitor the ABA signaling output, we developed reporter system named pRab16A-fLUC which consists of Rab16A promoter of rice and luciferase gene. It responses more rapidly and sensitively to ABA than pABRC3-fLUC that consists of ABRC3 of HVA1 promoter in TGERP. We screened the reporter responses for over-expression of each signaling components from group A OsbZIPs to OsPYL/RCARs with or without ABA in TGERP. OsbZIP46 induced reporter most strongly among OsbZIPs tested in the presence of ABA. SAPKs could activate the OsbZIP46 even in the ABA independence. Subclass A OsPP2C6 and -8 almost completely inhibited the OsbZIP46 activity in the different degree through the SAPK9. Lastly, OsPYL/RCAR2 and -5 rescued the OsbZIP46 activity in the presence of SAPK9 and OsPP2C6 dependent on ABA concentration and expression level. By using TGERP, we could characterize successfully the effects of ABA dependent gene expression signaling components in rice. In conclusion, TGERP represents very useful technology to study systemic functional genomics in rice or other monocot.

KW - ABA

KW - Dual luciferase assay

KW - Reconstitution of signaling

KW - Rice protoplast

KW - Transient expression

UR - http://www.scopus.com/inward/record.url?scp=84938901573&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84938901573&partnerID=8YFLogxK

U2 - 10.3389/fpls.2015.00614

DO - 10.3389/fpls.2015.00614

M3 - Article

AN - SCOPUS:84938901573

VL - 6

JO - Frontiers in Plant Science

JF - Frontiers in Plant Science

SN - 1664-462X

IS - AUG

M1 - 614

ER -