Title

Control of leaf senescence through communication between plant organelles: Anterograde signaling pathway

Alternative Title

식물 소기관 간의 소통을 통한 잎 노화 조절: 전행성 신호 전달

DGIST Authors

Heeho Lee ; Pyung Ok Lim ; Min Sik Kim

Advisor

임평옥

Co-Advisor(s)

Min Sik Kim

Issued Date

2024

Awarded Date

2024-08-01

Citation

Heeho Lee. (2024). Control of leaf senescence through communication between plant organelles: Anterograde signaling pathway. doi: 10.22677/THESIS.200000801041

Type

Thesis

Description

Leaf senescence, Anterograde signaling, Sigma factors, Pentatricopeptide repeat protein

Table Of Contents

Ⅰ. General Introduction 1
1.1 Introduction to leaf senescence 1
1.2 Introduction to organelle coordination 1
1.3 Chloroplast-encoded gene expression by sigma factors in transcriptional level 2
1.4 Chloroplast-encoded gene expression by pentatricopeptide repeat protein at post-transcriptional level 2
1.5 Object 3
ⅠI. Identification of the Regulatory Factor that Controls Sigma Factors
Expression During Leaf Senescence in Arabidopsis thaliana 4
2.1 Literature survey 4
2.2 Method and Material 4
2.3 Results 7
2.3.1 Investigation of upstream regulators of SIGs during senescence 7
2.3.2 PIF4 and PIF5 are direct transcription factors of some sigma factors 9
2.3.3 PIF4 and PIF5 suppress the expression of SIG2, SIG3, and SIG5 during darkness-induced senescence 10
2.3.4 SIG3 exhibits a delayed senescence phenotype under natural conditions 11
2.3.5 Deficiency of SIG3 causes leaf senescence due to decreased function of PSII 13
2.4 Discussion 14
IIⅠ. Investigation of the Senescence Phenotypes of Various Pentatricopeptide Repeat Proteins 16
3.1 Literature survey 16
3.2 Method and Material 16
3.3 Results 18
3.3.1 PPR genes regulate leaf senescence under natural conditions 18
3.3.2 svr7 is sensitive to oxidative stress 20
3.3.3 Impairment of chloroplast protein complex composition of svr7 is associated with leaf senescence 21
3.4 Discussion 23
References 25
요약문 28

URI

http://hdl.handle.net/20.500.11750/57609
http://dgist.dcollection.net/common/orgView/200000801041

DOI

10.22677/THESIS.200000801041

Degree

Master

Department

Department of New Biology

Publisher

DGIST

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